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<h1>Connect.cc</h1><a href="Connect_8cc.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001
<a name="l00002"></a>00002 <span class="comment">// -*- mode: c++; c-basic-offset:4 -*-</span>
<a name="l00003"></a>00003
<a name="l00004"></a>00004 <span class="comment">// This file is part of libdap, A C++ implementation of the OPeNDAP Data</span>
<a name="l00005"></a>00005 <span class="comment">// Access Protocol.</span>
<a name="l00006"></a>00006
<a name="l00007"></a>00007 <span class="comment">// Copyright (c) 2002,2003 OPeNDAP, Inc.</span>
<a name="l00008"></a>00008 <span class="comment">// Author: James Gallagher <jgallagher@opendap.org></span>
<a name="l00009"></a>00009 <span class="comment">// Dan Holloway <dholloway@gso.uri.edu></span>
<a name="l00010"></a>00010 <span class="comment">// Reza Nekovei <reza@intcomm.net></span>
<a name="l00011"></a>00011 <span class="comment">//</span>
<a name="l00012"></a>00012 <span class="comment">// This library is free software; you can redistribute it and/or</span>
<a name="l00013"></a>00013 <span class="comment">// modify it under the terms of the GNU Lesser General Public</span>
<a name="l00014"></a>00014 <span class="comment">// License as published by the Free Software Foundation; either</span>
<a name="l00015"></a>00015 <span class="comment">// version 2.1 of the License, or (at your option) any later version.</span>
<a name="l00016"></a>00016 <span class="comment">//</span>
<a name="l00017"></a>00017 <span class="comment">// This library is distributed in the hope that it will be useful,</span>
<a name="l00018"></a>00018 <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00019"></a>00019 <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00020"></a>00020 <span class="comment">// Lesser General Public License for more details.</span>
<a name="l00021"></a>00021 <span class="comment">//</span>
<a name="l00022"></a>00022 <span class="comment">// You should have received a copy of the GNU Lesser General Public</span>
<a name="l00023"></a>00023 <span class="comment">// License along with this library; if not, write to the Free Software</span>
<a name="l00024"></a>00024 <span class="comment">// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span>
<a name="l00025"></a>00025 <span class="comment">//</span>
<a name="l00026"></a>00026 <span class="comment">// You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.</span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="comment">// (c) COPYRIGHT URI/MIT 1994-2002</span>
<a name="l00029"></a>00029 <span class="comment">// Please read the full copyright statement in the file COPYRIGHT_URI.</span>
<a name="l00030"></a>00030 <span class="comment">//</span>
<a name="l00031"></a>00031 <span class="comment">// Authors:</span>
<a name="l00032"></a>00032 <span class="comment">// jhrg,jimg James Gallagher <jgallagher@gso.uri.edu></span>
<a name="l00033"></a>00033 <span class="comment">// dan Dan Holloway <dholloway@gso.uri.edu></span>
<a name="l00034"></a>00034 <span class="comment">// reza Reza Nekovei <reza@intcomm.net></span>
<a name="l00035"></a>00035
<a name="l00036"></a>00036
<a name="l00037"></a>00037 <span class="preprocessor">#include "<a class="code" href="config_8h.html">config.h</a>"</span>
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="comment">//#define DODS_DEBUG</span>
<a name="l00040"></a>00040
<a name="l00041"></a>00041 <span class="keyword">static</span> <span class="keywordtype">char</span> rcsid[] <a class="code" href="config_8h.html#05e109ec893d0b12023d5b0cf4f718c4">not_used</a> =
<a name="l00042"></a>00042 { <span class="stringliteral">"$Id: Connect.cc 19917 2008-11-25 23:47:56Z jimg $"</span>
<a name="l00043"></a>00043 };
<a name="l00044"></a>00044
<a name="l00045"></a>00045 <span class="preprocessor">#include <cstring></span>
<a name="l00046"></a>00046 <span class="preprocessor">#include <fstream></span>
<a name="l00047"></a>00047 <span class="preprocessor">#include <algorithm></span>
<a name="l00048"></a>00048
<a name="l00049"></a>00049 <span class="preprocessor">#include "<a class="code" href="debug_8h.html">debug.h</a>"</span>
<a name="l00050"></a>00050 <span class="preprocessor">#include "<a class="code" href="DataDDS_8h.html">DataDDS.h</a>"</span>
<a name="l00051"></a>00051 <span class="preprocessor">#include "<a class="code" href="Connect_8h.html">Connect.h</a>"</span>
<a name="l00052"></a>00052 <span class="preprocessor">#include "<a class="code" href="escaping_8h.html">escaping.h</a>"</span>
<a name="l00053"></a>00053 <span class="preprocessor">#include "<a class="code" href="RCReader_8h.html">RCReader.h</a>"</span>
<a name="l00054"></a>00054 <span class="preprocessor">#include "<a class="code" href="DDXParser_8h.html">DDXParser.h</a>"</span>
<a name="l00055"></a>00055 <span class="preprocessor">#include "<a class="code" href="XDRFileUnMarshaller_8h.html">XDRFileUnMarshaller.h</a>"</span>
<a name="l00056"></a>00056
<a name="l00057"></a>00057 <span class="keyword">using</span> std::cerr;
<a name="l00058"></a>00058 <span class="keyword">using</span> std::endl;
<a name="l00059"></a>00059 <span class="keyword">using</span> std::ifstream;
<a name="l00060"></a>00060 <span class="keyword">using</span> std::ofstream;
<a name="l00061"></a>00061 <span class="keyword">using</span> std::min;
<a name="l00062"></a>00062
<a name="l00063"></a>00063 <span class="keyword">namespace </span>libdap {
<a name="l00064"></a>00064
<a name="l00067"></a>00067 <span class="keywordtype">void</span>
<a name="l00068"></a>00068 Connect::process_data(DataDDS &data, Response *rs)
<a name="l00069"></a>00069 {
<a name="l00070"></a>00070 <a class="code" href="debug_8h.html#32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cerr << <span class="stringliteral">"Entering Connect::process_data"</span> << endl);
<a name="l00071"></a>00071
<a name="l00072"></a>00072 <span class="comment">// Use the implementation and protocol versions from the Response object</span>
<a name="l00073"></a>00073 <span class="comment">// since the copies in Connect might go away. Regardless, we must keep the</span>
<a name="l00074"></a>00074 <span class="comment">// Response object alive until we no longer need the stream, since</span>
<a name="l00075"></a>00075 <span class="comment">// destroying it will close the stream. So, might as well use it for the</span>
<a name="l00076"></a>00076 <span class="comment">// version info too...</span>
<a name="l00077"></a>00077 data.set_version(rs->get_version());
<a name="l00078"></a>00078 data.set_protocol(rs->get_protocol());
<a name="l00079"></a>00079
<a name="l00080"></a>00080 <a class="code" href="debug_8h.html#32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cerr << <span class="stringliteral">"Entering process_data: d_stream = "</span> << rs << endl);
<a name="l00081"></a>00081 <span class="keywordflow">switch</span> (rs->get_type()) {
<a name="l00082"></a>00082 <span class="keywordflow">case</span> <a class="code" href="namespacelibdap.html#e7466ed8496f06654ec276eac907c06a742dd62797a6ff77549a1803a4e77d79">dods_error</a>: {
<a name="l00083"></a>00083 Error e;
<a name="l00084"></a>00084 <span class="keywordflow">if</span> (!e.parse(rs->get_stream()))
<a name="l00085"></a>00085 <span class="keywordflow">throw</span> InternalErr(__FILE__, __LINE__,
<a name="l00086"></a>00086 <span class="stringliteral">"Could not parse the Error object returned by the server!"</span>);
<a name="l00087"></a>00087 <span class="keywordflow">throw</span> e;
<a name="l00088"></a>00088 }
<a name="l00089"></a>00089
<a name="l00090"></a>00090 <span class="keywordflow">case</span> <a class="code" href="namespacelibdap.html#e7466ed8496f06654ec276eac907c06aa4a8434126fdf1a42a77c74409973b54">web_error</a>:
<a name="l00091"></a>00091 <span class="comment">// Web errors (those reported in the return document's MIME header)</span>
<a name="l00092"></a>00092 <span class="comment">// are processed by the WWW library.</span>
<a name="l00093"></a>00093 <span class="keywordflow">throw</span> InternalErr(__FILE__, __LINE__, <span class="stringliteral">"An error was reported by the remote httpd; this should have been processed by HTTPConnect.."</span>);
<a name="l00094"></a>00094
<a name="l00095"></a>00095 <span class="keywordflow">case</span> <a class="code" href="namespacelibdap.html#e7466ed8496f06654ec276eac907c06a81aaa5f03d4278cb44a2148d13384710">dods_data</a>:
<a name="l00096"></a>00096 <span class="keywordflow">default</span>: {
<a name="l00097"></a>00097 <span class="comment">// Parse the DDS; throw an exception on error.</span>
<a name="l00098"></a>00098 data.parse(rs->get_stream());
<a name="l00099"></a>00099 XDRFileUnMarshaller um( rs->get_stream() ) ;
<a name="l00100"></a>00100
<a name="l00101"></a>00101 <span class="comment">// Load the DDS with data.</span>
<a name="l00102"></a>00102 <span class="keywordflow">try</span> {
<a name="l00103"></a>00103 <span class="keywordflow">for</span> (<a class="code" href="classlibdap_1_1DDS.html#5140f67d8f7eecf0a260d8a5d9fc39c5">DDS::Vars_iter</a> i = data.var_begin(); i != data.var_end();
<a name="l00104"></a>00104 i++) {
<a name="l00105"></a>00105 (*i)->deserialize(um, &data);
<a name="l00106"></a>00106 }
<a name="l00107"></a>00107 }
<a name="l00108"></a>00108 <span class="keywordflow">catch</span> (Error &e) {
<a name="l00109"></a>00109 <span class="keywordflow">throw</span> e;
<a name="l00110"></a>00110 }
<a name="l00111"></a>00111
<a name="l00112"></a>00112 <span class="keywordflow">return</span>;
<a name="l00113"></a>00113 }
<a name="l00114"></a>00114
<a name="l00115"></a>00115 <span class="preprocessor">#if 0</span>
<a name="l00116"></a>00116 <span class="preprocessor"></span> <span class="comment">// According to the spec (DAP 2), servers MUST return the dods_data</span>
<a name="l00117"></a>00117 <span class="comment">// Content-Type. But, many older servers do not do this, so the</span>
<a name="l00118"></a>00118 <span class="comment">// default case is not to throw an error, but to treat the response</span>
<a name="l00119"></a>00119 <span class="comment">// as data... See bug 706. 03/22/04 jhrg</span>
<a name="l00120"></a>00120 <span class="keywordflow">default</span>:
<a name="l00121"></a>00121 <span class="keywordflow">throw</span> Error(<span class="stringliteral">"The site did not return a valid response (it lacked the\nexpected content description header value of 'dods_data').\nThis may indicate that the server at the site is not correctly\nconfigured, or that the URL has changed."</span>);
<a name="l00122"></a>00122 <span class="preprocessor">#endif</span>
<a name="l00123"></a>00123 <span class="preprocessor"></span> }
<a name="l00124"></a>00124 }
<a name="l00125"></a>00125
<a name="l00126"></a>00126 <span class="comment">// Barely a parser... This is used when reading from local sources of DODS</span>
<a name="l00127"></a>00127 <span class="comment">// Data objects. It simulates the important actions of the libwww MIME header</span>
<a name="l00128"></a>00128 <span class="comment">// parser. Those actions fill in certain fields in the Connect object. jhrg</span>
<a name="l00129"></a>00129 <span class="comment">// 5/20/97</span>
<a name="l00130"></a>00130 <span class="comment">//</span>
<a name="l00131"></a>00131 <span class="comment">// Make sure that this parser reads from data_source without disturbing the</span>
<a name="l00132"></a>00132 <span class="comment">// information in data_source that follows the MIME header. Since the DDS</span>
<a name="l00133"></a>00133 <span class="comment">// (which follows the MIME header) is parsed by a flex/bison scanner/parser,</span>
<a name="l00134"></a>00134 <span class="comment">// make sure to use I/O calls that will mesh with ANSI C I/O calls. In the</span>
<a name="l00135"></a>00135 <span class="comment">// old GNU libg++, the C++ calls were synchronized with the C calls, but that</span>
<a name="l00136"></a>00136 <span class="comment">// may no longer be the case. 5/31/99 jhrg</span>
<a name="l00137"></a>00137
<a name="l00147"></a>00147 <span class="keywordtype">void</span>
<a name="l00148"></a>00148 Connect::parse_mime(Response *rs)
<a name="l00149"></a>00149 {
<a name="l00150"></a>00150 rs->set_version(<span class="stringliteral">"dods/0.0"</span>); <span class="comment">// initial value; for backward compat.</span>
<a name="l00151"></a>00151 rs->set_protocol(<span class="stringliteral">"2.0"</span>);
<a name="l00152"></a>00152
<a name="l00153"></a>00153 <span class="comment">// If the first line does not start with HTTP, XDODS or XDAP, assume</span>
<a name="l00154"></a>00154 <span class="comment">// there's no MIME header here and return without reading anymore</span>
<a name="l00155"></a>00155 FILE *data_source = rs->get_stream();
<a name="l00156"></a>00156
<a name="l00157"></a>00157 <span class="keywordtype">char</span> line[256];
<a name="l00158"></a>00158 fgets(line, 255, data_source);
<a name="l00159"></a>00159
<a name="l00160"></a>00160 <span class="keywordtype">int</span> slen = strlen(line);
<a name="l00161"></a>00161 slen = min(slen, 256); <span class="comment">// use min to limit slen to 256 (fortify)</span>
<a name="l00162"></a>00162 line[slen - 1] = <span class="charliteral">'\0'</span>; <span class="comment">// remove the newline</span>
<a name="l00163"></a>00163 <span class="keywordflow">if</span> (line[slen - 2] == <span class="charliteral">'\r'</span>) <span class="comment">// ...and the preceding carriage return</span>
<a name="l00164"></a>00164 line[slen - 2] = <span class="charliteral">'\0'</span>;
<a name="l00165"></a>00165
<a name="l00166"></a>00166 <span class="keywordflow">while</span> (line[0] != <span class="charliteral">'\0'</span>) {
<a name="l00167"></a>00167 <span class="keywordtype">char</span> h[256], v[256];
<a name="l00168"></a>00168 sscanf(line, <span class="stringliteral">"%s %s\n"</span>, h, v);
<a name="l00169"></a>00169 <span class="keywordtype">string</span> header = h;
<a name="l00170"></a>00170 <span class="keywordtype">string</span> value = v;
<a name="l00171"></a>00171 <a class="code" href="namespacelibdap.html#7edce266869606fc7bb46124f8d63809">downcase</a>(header);
<a name="l00172"></a>00172 <a class="code" href="namespacelibdap.html#7edce266869606fc7bb46124f8d63809">downcase</a>(value);
<a name="l00173"></a>00173
<a name="l00174"></a>00174 <span class="keywordflow">if</span> (header == <span class="stringliteral">"content-description:"</span>) {
<a name="l00175"></a>00175 <a class="code" href="debug_8h.html#32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cout << header << <span class="stringliteral">": "</span> << value << endl);
<a name="l00176"></a>00176 rs->set_type(<a class="code" href="namespacelibdap.html#284c1c548cbcea75bb1b7c8374dc04e9">get_description_type</a>(value));
<a name="l00177"></a>00177 }
<a name="l00178"></a>00178 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (header == <span class="stringliteral">"xdods-server:"</span>
<a name="l00179"></a>00179 && rs->get_version() == <span class="stringliteral">"dods/0.0"</span>) {
<a name="l00180"></a>00180 <a class="code" href="debug_8h.html#32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cout << header << <span class="stringliteral">": "</span> << value << endl);
<a name="l00181"></a>00181 rs->set_version(value);
<a name="l00182"></a>00182 }
<a name="l00183"></a>00183 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (header == <span class="stringliteral">"xopendap-server:"</span>) {
<a name="l00184"></a>00184 <a class="code" href="debug_8h.html#32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cout << header << <span class="stringliteral">": "</span> << value << endl);
<a name="l00185"></a>00185 rs->set_version(value);
<a name="l00186"></a>00186 }
<a name="l00187"></a>00187 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (header == <span class="stringliteral">"xdap:"</span>) {
<a name="l00188"></a>00188 <a class="code" href="debug_8h.html#32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cout << header << <span class="stringliteral">": "</span> << value << endl);
<a name="l00189"></a>00189 rs->set_protocol(value);
<a name="l00190"></a>00190 }
<a name="l00191"></a>00191 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (rs->get_version() == <span class="stringliteral">"dods/0.0"</span> && header == <span class="stringliteral">"server:"</span>) {
<a name="l00192"></a>00192 <a class="code" href="debug_8h.html#32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cout << header << <span class="stringliteral">": "</span> << value << endl);
<a name="l00193"></a>00193 rs->set_version(value);
<a name="l00194"></a>00194 }
<a name="l00195"></a>00195
<a name="l00196"></a>00196 fgets(line, 255, data_source);
<a name="l00197"></a>00197 slen = strlen(line);
<a name="l00198"></a>00198 slen = min(slen, 256); <span class="comment">// use min to limit slen to 256</span>
<a name="l00199"></a>00199 line[slen - 1] = <span class="charliteral">'\0'</span>;
<a name="l00200"></a>00200 <span class="keywordflow">if</span> (line[slen - 2] == <span class="charliteral">'\r'</span>)
<a name="l00201"></a>00201 line[slen - 2] = <span class="charliteral">'\0'</span>;
<a name="l00202"></a>00202 }
<a name="l00203"></a>00203 }
<a name="l00204"></a>00204
<a name="l00205"></a>00205 <span class="comment">// public mfuncs</span>
<a name="l00206"></a>00206
<a name="l00214"></a><a class="code" href="classlibdap_1_1Connect.html#03b8c9f6773a25c3c837b9890099d5e8">00214</a> <a class="code" href="classlibdap_1_1Connect.html#519d36213fc5f0fefc0c11a6b131beb8">Connect::Connect</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &n, <span class="keywordtype">string</span> uname, <span class="keywordtype">string</span> password)
<a name="l00215"></a>00215 <span class="keywordflow">throw</span>(<a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a>, <a class="code" href="classlibdap_1_1InternalErr.html" title="A class for software fault reporting.">InternalErr</a>)
<a name="l00216"></a>00216 : d_http(0), d_version(<span class="stringliteral">"unknown"</span>), d_protocol(<span class="stringliteral">"2.0"</span>)
<a name="l00217"></a>00217 {
<a name="l00218"></a>00218 <span class="keywordtype">string</span> name = <a class="code" href="namespacelibdap.html#4b1fc86f3e9e75f967ad66f07962d406">prune_spaces</a>(n);
<a name="l00219"></a>00219
<a name="l00220"></a>00220 <span class="comment">// Figure out if the URL starts with 'http', if so, make sure that we</span>
<a name="l00221"></a>00221 <span class="comment">// talk to an instance of HTTPConnect.</span>
<a name="l00222"></a>00222 <span class="keywordflow">if</span> (name.find(<span class="stringliteral">"http"</span>) == 0) {
<a name="l00223"></a>00223 <a class="code" href="debug_8h.html#32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cerr << <span class="stringliteral">"Connect: The identifier is an http URL"</span> << endl);
<a name="l00224"></a>00224 d_http = <span class="keyword">new</span> <a class="code" href="classlibdap_1_1HTTPConnect.html">HTTPConnect</a>(<a class="code" href="classlibdap_1_1RCReader.html#8272ec2f2eae73a038d21bfcd0c23fd3">RCReader::instance</a>());
<a name="l00225"></a>00225
<a name="l00226"></a>00226 <span class="comment">// Find and store any CE given with the URL.</span>
<a name="l00227"></a>00227 string::size_type dotpos = name.find(<span class="charliteral">'?'</span>);
<a name="l00228"></a>00228 <span class="keywordflow">if</span> (dotpos != name.npos) {
<a name="l00229"></a>00229 _URL = name.substr(0, dotpos);
<a name="l00230"></a>00230 <span class="keywordtype">string</span> expr = name.substr(dotpos + 1);
<a name="l00231"></a>00231
<a name="l00232"></a>00232 dotpos = expr.find(<span class="charliteral">'&'</span>);
<a name="l00233"></a>00233 <span class="keywordflow">if</span> (dotpos != expr.npos) {
<a name="l00234"></a>00234 _proj = expr.substr(0, dotpos);
<a name="l00235"></a>00235 _sel = expr.substr(dotpos); <span class="comment">// XXX includes '&'</span>
<a name="l00236"></a>00236 }
<a name="l00237"></a>00237 <span class="keywordflow">else</span> {
<a name="l00238"></a>00238 _proj = expr;
<a name="l00239"></a>00239 _sel = <span class="stringliteral">""</span>;
<a name="l00240"></a>00240 }
<a name="l00241"></a>00241 }
<a name="l00242"></a>00242 <span class="keywordflow">else</span> {
<a name="l00243"></a>00243 _URL = name;
<a name="l00244"></a>00244 _proj = <span class="stringliteral">""</span>;
<a name="l00245"></a>00245 _sel = <span class="stringliteral">""</span>;
<a name="l00246"></a>00246 }
<a name="l00247"></a>00247
<a name="l00248"></a>00248 _local = <span class="keyword">false</span>;
<a name="l00249"></a>00249 }
<a name="l00250"></a>00250 <span class="keywordflow">else</span> {
<a name="l00251"></a>00251 <a class="code" href="debug_8h.html#32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cerr << <span class="stringliteral">"Connect: The identifier is a local data source."</span> << endl);
<a name="l00252"></a>00252
<a name="l00253"></a>00253 d_http = 0;
<a name="l00254"></a>00254 _URL = <span class="stringliteral">""</span>;
<a name="l00255"></a>00255 _local = <span class="keyword">true</span>; <span class="comment">// local in this case means non-DAP</span>
<a name="l00256"></a>00256 }
<a name="l00257"></a>00257
<a name="l00258"></a>00258 set_credentials(uname, password);
<a name="l00259"></a>00259 }
<a name="l00260"></a>00260
<a name="l00261"></a><a class="code" href="classlibdap_1_1Connect.html#cacffa987a2d9a36f355dd471970fdcf">00261</a> <a class="code" href="classlibdap_1_1Connect.html#cacffa987a2d9a36f355dd471970fdcf">Connect::~Connect</a>()
<a name="l00262"></a>00262 {
<a name="l00263"></a>00263 <a class="code" href="debug_8h.html#c1f764c266c50f0050e33557004c914c">DBG2</a>(cerr << <span class="stringliteral">"Entering the Connect dtor"</span> << endl);
<a name="l00264"></a>00264
<a name="l00265"></a>00265 <span class="keywordflow">if</span> (d_http)
<a name="l00266"></a>00266 <span class="keyword">delete</span> d_http; d_http = 0;
<a name="l00267"></a>00267
<a name="l00268"></a>00268 <a class="code" href="debug_8h.html#c1f764c266c50f0050e33557004c914c">DBG2</a>(cerr << <span class="stringliteral">"Leaving the Connect dtor"</span> << endl);
<a name="l00269"></a>00269 }
<a name="l00270"></a>00270
<a name="l00278"></a>00278 <span class="keywordtype">string</span>
<a name="l00279"></a><a class="code" href="classlibdap_1_1Connect.html#c7a5896a09882004b75e581999940526">00279</a> <a class="code" href="classlibdap_1_1Connect.html#c7a5896a09882004b75e581999940526">Connect::request_version</a>()
<a name="l00280"></a>00280 {
<a name="l00281"></a>00281 <span class="keywordtype">string</span> version_url = _URL + <span class="stringliteral">".ver"</span>;
<a name="l00282"></a>00282 <span class="keywordflow">if</span> (_proj.length() + _sel.length())
<a name="l00283"></a>00283 version_url = version_url + <span class="stringliteral">"?"</span> + <a class="code" href="namespacelibdap.html#dc33774947740cc181b6d4d7ca90e22d">id2www_ce</a>(_proj + _sel);
<a name="l00284"></a>00284
<a name="l00285"></a>00285 <a class="code" href="classlibdap_1_1Response.html">Response</a> *rs = 0;
<a name="l00286"></a>00286 <span class="keywordflow">try</span> {
<a name="l00287"></a>00287 rs = d_http-><a class="code" href="classlibdap_1_1HTTPConnect.html#5e3558838e245a96c9392b33ef4ba298">fetch_url</a>(version_url);
<a name="l00288"></a>00288 }
<a name="l00289"></a>00289 <span class="keywordflow">catch</span> (<a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> &e) {
<a name="l00290"></a>00290 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00291"></a>00291 <span class="keywordflow">throw</span> e;
<a name="l00292"></a>00292 }
<a name="l00293"></a>00293
<a name="l00294"></a>00294 d_version = rs-><a class="code" href="classlibdap_1_1Response.html#654eedafce6ecb816324713150914fec">get_version</a>();
<a name="l00295"></a>00295 d_protocol = rs-><a class="code" href="classlibdap_1_1Response.html#e33bebc83bcfbd2bf958697e4516b2d7">get_protocol</a>();
<a name="l00296"></a>00296 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00297"></a>00297
<a name="l00298"></a>00298 <span class="keywordflow">return</span> d_version;
<a name="l00299"></a>00299 }
<a name="l00300"></a>00300
<a name="l00312"></a>00312 <span class="keywordtype">string</span>
<a name="l00313"></a><a class="code" href="classlibdap_1_1Connect.html#aa1ab562899da9a4630de01f943d1aa9">00313</a> <a class="code" href="classlibdap_1_1Connect.html#aa1ab562899da9a4630de01f943d1aa9">Connect::request_protocol</a>()
<a name="l00314"></a>00314 {
<a name="l00315"></a>00315 <span class="keywordtype">string</span> version_url = _URL + <span class="stringliteral">".ver"</span>;
<a name="l00316"></a>00316 <span class="keywordflow">if</span> (_proj.length() + _sel.length())
<a name="l00317"></a>00317 version_url = version_url + <span class="stringliteral">"?"</span> + <a class="code" href="namespacelibdap.html#dc33774947740cc181b6d4d7ca90e22d">id2www_ce</a>(_proj + _sel);
<a name="l00318"></a>00318
<a name="l00319"></a>00319 <a class="code" href="classlibdap_1_1Response.html">Response</a> *rs = 0;
<a name="l00320"></a>00320 <span class="keywordflow">try</span> {
<a name="l00321"></a>00321 rs = d_http-><a class="code" href="classlibdap_1_1HTTPConnect.html#5e3558838e245a96c9392b33ef4ba298">fetch_url</a>(version_url);
<a name="l00322"></a>00322 }
<a name="l00323"></a>00323 <span class="keywordflow">catch</span> (<a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> &e) {
<a name="l00324"></a>00324 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00325"></a>00325 <span class="keywordflow">throw</span> e;
<a name="l00326"></a>00326 }
<a name="l00327"></a>00327
<a name="l00328"></a>00328 d_version = rs-><a class="code" href="classlibdap_1_1Response.html#654eedafce6ecb816324713150914fec">get_version</a>();
<a name="l00329"></a>00329 d_protocol = rs-><a class="code" href="classlibdap_1_1Response.html#e33bebc83bcfbd2bf958697e4516b2d7">get_protocol</a>();
<a name="l00330"></a>00330 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00331"></a>00331
<a name="l00332"></a>00332 <span class="keywordflow">return</span> d_protocol;
<a name="l00333"></a>00333 }
<a name="l00334"></a>00334
<a name="l00342"></a>00342 <span class="keywordtype">void</span>
<a name="l00343"></a><a class="code" href="classlibdap_1_1Connect.html#816ef3bb8e729712ffeb6523f2cc4f0e">00343</a> <a class="code" href="classlibdap_1_1Connect.html#816ef3bb8e729712ffeb6523f2cc4f0e" title="Get the DAS from a server.">Connect::request_das</a>(<a class="code" href="classlibdap_1_1DAS.html" title="Hold attribute data for a DAP2 dataset.">DAS</a> &das)
<a name="l00344"></a>00344 {
<a name="l00345"></a>00345 <span class="keywordtype">string</span> das_url = _URL + <span class="stringliteral">".das"</span>;
<a name="l00346"></a>00346 <span class="keywordflow">if</span> (_proj.length() + _sel.length())
<a name="l00347"></a>00347 das_url = das_url + <span class="stringliteral">"?"</span> + <a class="code" href="namespacelibdap.html#dc33774947740cc181b6d4d7ca90e22d">id2www_ce</a>(_proj + _sel);
<a name="l00348"></a>00348
<a name="l00349"></a>00349 <a class="code" href="classlibdap_1_1Response.html">Response</a> *rs = 0;
<a name="l00350"></a>00350 <span class="keywordflow">try</span> {
<a name="l00351"></a>00351 rs = d_http-><a class="code" href="classlibdap_1_1HTTPConnect.html#5e3558838e245a96c9392b33ef4ba298">fetch_url</a>(das_url);
<a name="l00352"></a>00352 }
<a name="l00353"></a>00353 <span class="keywordflow">catch</span> (<a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> &e) {
<a name="l00354"></a>00354 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00355"></a>00355 <span class="keywordflow">throw</span> e;
<a name="l00356"></a>00356 }
<a name="l00357"></a>00357
<a name="l00358"></a>00358 d_version = rs-><a class="code" href="classlibdap_1_1Response.html#654eedafce6ecb816324713150914fec">get_version</a>();
<a name="l00359"></a>00359 d_protocol = rs-><a class="code" href="classlibdap_1_1Response.html#e33bebc83bcfbd2bf958697e4516b2d7">get_protocol</a>();
<a name="l00360"></a>00360
<a name="l00361"></a>00361 <span class="keywordflow">switch</span> (rs-><a class="code" href="classlibdap_1_1Response.html#b69844a814ec4036a12336640b06e279">get_type</a>()) {
<a name="l00362"></a>00362 <span class="keywordflow">case</span> <a class="code" href="namespacelibdap.html#e7466ed8496f06654ec276eac907c06a742dd62797a6ff77549a1803a4e77d79">dods_error</a>: {
<a name="l00363"></a>00363 <a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> e;
<a name="l00364"></a>00364 <span class="keywordflow">if</span> (!e.<a class="code" href="classlibdap_1_1Error.html#c705b3c1cfab1f7530d66a974eb0e8b6" title="Parse an Error object.">parse</a>(rs-><a class="code" href="classlibdap_1_1Response.html#5b4903bb627c5e6ccd4cd50712e1f0a1">get_stream</a>())) {
<a name="l00365"></a>00365 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1InternalErr.html" title="A class for software fault reporting.">InternalErr</a>(__FILE__, __LINE__,
<a name="l00366"></a>00366 <span class="stringliteral">"Could not parse error returned from server."</span>);
<a name="l00367"></a>00367 <span class="keywordflow">break</span>;
<a name="l00368"></a>00368 }
<a name="l00369"></a>00369 <span class="keywordflow">throw</span> e;
<a name="l00370"></a>00370 <span class="keywordflow">break</span>;
<a name="l00371"></a>00371 }
<a name="l00372"></a>00372
<a name="l00373"></a>00373 <span class="keywordflow">case</span> <a class="code" href="namespacelibdap.html#e7466ed8496f06654ec276eac907c06aa4a8434126fdf1a42a77c74409973b54">web_error</a>:
<a name="l00374"></a>00374 <span class="comment">// We should never get here; a web error should be picked up read_url</span>
<a name="l00375"></a>00375 <span class="comment">// (called by fetch_url) and result in a thrown Error object.</span>
<a name="l00376"></a>00376 <span class="keywordflow">break</span>;
<a name="l00377"></a>00377
<a name="l00378"></a>00378 <span class="keywordflow">case</span> <a class="code" href="namespacelibdap.html#e7466ed8496f06654ec276eac907c06a02461a6c30af5fa6a789ea22fef8534e">dods_das</a>:
<a name="l00379"></a>00379 <span class="keywordflow">default</span>:
<a name="l00380"></a>00380 <span class="comment">// DAS::parse throws an exception on error.</span>
<a name="l00381"></a>00381 <span class="keywordflow">try</span> {
<a name="l00382"></a>00382 das.<a class="code" href="classlibdap_1_1DAS.html#a84ac295a96a12f9f083a8210732f5a8" title="Reads a DAS from the named file.">parse</a>(rs-><a class="code" href="classlibdap_1_1Response.html#5b4903bb627c5e6ccd4cd50712e1f0a1">get_stream</a>()); <span class="comment">// read and parse the das from a file</span>
<a name="l00383"></a>00383 }
<a name="l00384"></a>00384 <span class="keywordflow">catch</span> (<a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> &e) {
<a name="l00385"></a>00385 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00386"></a>00386 <span class="keywordflow">throw</span> e;
<a name="l00387"></a>00387 }
<a name="l00388"></a>00388
<a name="l00389"></a>00389 <span class="keywordflow">break</span>;
<a name="l00390"></a>00390
<a name="l00391"></a>00391 <span class="preprocessor">#if 0</span>
<a name="l00392"></a>00392 <span class="preprocessor"></span> <span class="comment">// See the comment in process_data() and bug 706. 03/22/04 jhrg</span>
<a name="l00393"></a>00393 <span class="keywordflow">default</span>:
<a name="l00394"></a>00394 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a>(<span class="stringliteral">"The site did not return a valid response (it lacked the\nexpected content description header value of 'dods_das').\nThis may indicate that the server at the site is not correctly\nconfigured, or that the URL has changed."</span>);
<a name="l00395"></a>00395 <span class="preprocessor">#endif</span>
<a name="l00396"></a>00396 <span class="preprocessor"></span> }
<a name="l00397"></a>00397
<a name="l00398"></a>00398 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00399"></a>00399 }
<a name="l00400"></a>00400
<a name="l00411"></a>00411 <span class="keywordtype">void</span>
<a name="l00412"></a><a class="code" href="classlibdap_1_1Connect.html#bcf814710de1e252e74a4e1b72d3c6b3">00412</a> <a class="code" href="classlibdap_1_1Connect.html#bcf814710de1e252e74a4e1b72d3c6b3" title="Get the DAS from a server.">Connect::request_das_url</a>(<a class="code" href="classlibdap_1_1DAS.html" title="Hold attribute data for a DAP2 dataset.">DAS</a> &das)
<a name="l00413"></a>00413 {
<a name="l00414"></a>00414 <span class="keywordtype">string</span> use_url = _URL + <span class="stringliteral">"?"</span> + _proj + _sel ;
<a name="l00415"></a>00415 <a class="code" href="classlibdap_1_1Response.html">Response</a> *rs = 0;
<a name="l00416"></a>00416 <span class="keywordflow">try</span> {
<a name="l00417"></a>00417 rs = d_http-><a class="code" href="classlibdap_1_1HTTPConnect.html#5e3558838e245a96c9392b33ef4ba298">fetch_url</a>(use_url);
<a name="l00418"></a>00418 }
<a name="l00419"></a>00419 <span class="keywordflow">catch</span> (<a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> &e) {
<a name="l00420"></a>00420 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00421"></a>00421 <span class="keywordflow">throw</span> e;
<a name="l00422"></a>00422 }
<a name="l00423"></a>00423
<a name="l00424"></a>00424 d_version = rs-><a class="code" href="classlibdap_1_1Response.html#654eedafce6ecb816324713150914fec">get_version</a>();
<a name="l00425"></a>00425 d_protocol = rs-><a class="code" href="classlibdap_1_1Response.html#e33bebc83bcfbd2bf958697e4516b2d7">get_protocol</a>();
<a name="l00426"></a>00426
<a name="l00427"></a>00427 <span class="keywordflow">switch</span> (rs-><a class="code" href="classlibdap_1_1Response.html#b69844a814ec4036a12336640b06e279">get_type</a>()) {
<a name="l00428"></a>00428 <span class="keywordflow">case</span> <a class="code" href="namespacelibdap.html#e7466ed8496f06654ec276eac907c06a742dd62797a6ff77549a1803a4e77d79">dods_error</a>: {
<a name="l00429"></a>00429 <a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> e;
<a name="l00430"></a>00430 <span class="keywordflow">if</span> (!e.<a class="code" href="classlibdap_1_1Error.html#c705b3c1cfab1f7530d66a974eb0e8b6" title="Parse an Error object.">parse</a>(rs-><a class="code" href="classlibdap_1_1Response.html#5b4903bb627c5e6ccd4cd50712e1f0a1">get_stream</a>())) {
<a name="l00431"></a>00431 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1InternalErr.html" title="A class for software fault reporting.">InternalErr</a>(__FILE__, __LINE__,
<a name="l00432"></a>00432 <span class="stringliteral">"Could not parse error returned from server."</span>);
<a name="l00433"></a>00433 <span class="keywordflow">break</span>;
<a name="l00434"></a>00434 }
<a name="l00435"></a>00435 <span class="keywordflow">throw</span> e;
<a name="l00436"></a>00436 <span class="keywordflow">break</span>;
<a name="l00437"></a>00437 }
<a name="l00438"></a>00438
<a name="l00439"></a>00439 <span class="keywordflow">case</span> <a class="code" href="namespacelibdap.html#e7466ed8496f06654ec276eac907c06aa4a8434126fdf1a42a77c74409973b54">web_error</a>:
<a name="l00440"></a>00440 <span class="comment">// We should never get here; a web error should be picked up read_url</span>
<a name="l00441"></a>00441 <span class="comment">// (called by fetch_url) and result in a thrown Error object.</span>
<a name="l00442"></a>00442 <span class="keywordflow">break</span>;
<a name="l00443"></a>00443
<a name="l00444"></a>00444 <span class="keywordflow">case</span> <a class="code" href="namespacelibdap.html#e7466ed8496f06654ec276eac907c06a02461a6c30af5fa6a789ea22fef8534e">dods_das</a>:
<a name="l00445"></a>00445 <span class="keywordflow">default</span>:
<a name="l00446"></a>00446 <span class="comment">// DAS::parse throws an exception on error.</span>
<a name="l00447"></a>00447 <span class="keywordflow">try</span> {
<a name="l00448"></a>00448 das.<a class="code" href="classlibdap_1_1DAS.html#a84ac295a96a12f9f083a8210732f5a8" title="Reads a DAS from the named file.">parse</a>(rs-><a class="code" href="classlibdap_1_1Response.html#5b4903bb627c5e6ccd4cd50712e1f0a1">get_stream</a>()); <span class="comment">// read and parse the das from a file</span>
<a name="l00449"></a>00449 }
<a name="l00450"></a>00450 <span class="keywordflow">catch</span> (<a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> &e) {
<a name="l00451"></a>00451 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00452"></a>00452 <span class="keywordflow">throw</span> e;
<a name="l00453"></a>00453 }
<a name="l00454"></a>00454
<a name="l00455"></a>00455 <span class="keywordflow">break</span>;
<a name="l00456"></a>00456 }
<a name="l00457"></a>00457
<a name="l00458"></a>00458 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00459"></a>00459 }
<a name="l00460"></a>00460
<a name="l00474"></a>00474 <span class="keywordtype">void</span>
<a name="l00475"></a><a class="code" href="classlibdap_1_1Connect.html#ad5ef370110577e9ca2a0161928f9efa">00475</a> <a class="code" href="classlibdap_1_1Connect.html#ad5ef370110577e9ca2a0161928f9efa" title="Get the DDS from a server.">Connect::request_dds</a>(<a class="code" href="classlibdap_1_1DDS.html">DDS</a> &dds, <span class="keywordtype">string</span> expr)
<a name="l00476"></a>00476 {
<a name="l00477"></a>00477 <span class="keywordtype">string</span> proj, sel;
<a name="l00478"></a>00478 string::size_type dotpos = expr.find(<span class="charliteral">'&'</span>);
<a name="l00479"></a>00479 <span class="keywordflow">if</span> (dotpos != expr.npos) {
<a name="l00480"></a>00480 proj = expr.substr(0, dotpos);
<a name="l00481"></a>00481 sel = expr.substr(dotpos);
<a name="l00482"></a>00482 }
<a name="l00483"></a>00483 <span class="keywordflow">else</span> {
<a name="l00484"></a>00484 proj = expr;
<a name="l00485"></a>00485 sel = <span class="stringliteral">""</span>;
<a name="l00486"></a>00486 }
<a name="l00487"></a>00487
<a name="l00488"></a>00488 <span class="keywordtype">string</span> dds_url = _URL + <span class="stringliteral">".dds"</span> + <span class="stringliteral">"?"</span>
<a name="l00489"></a>00489 + <a class="code" href="namespacelibdap.html#dc33774947740cc181b6d4d7ca90e22d">id2www_ce</a>(_proj + proj + _sel + sel);
<a name="l00490"></a>00490
<a name="l00491"></a>00491 <a class="code" href="classlibdap_1_1Response.html">Response</a> *rs = 0;
<a name="l00492"></a>00492 <span class="keywordflow">try</span> {
<a name="l00493"></a>00493 rs = d_http-><a class="code" href="classlibdap_1_1HTTPConnect.html#5e3558838e245a96c9392b33ef4ba298">fetch_url</a>(dds_url);
<a name="l00494"></a>00494 }
<a name="l00495"></a>00495 <span class="keywordflow">catch</span> (<a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> &e) {
<a name="l00496"></a>00496 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00497"></a>00497 <span class="keywordflow">throw</span> e;
<a name="l00498"></a>00498 }
<a name="l00499"></a>00499
<a name="l00500"></a>00500 d_version = rs-><a class="code" href="classlibdap_1_1Response.html#654eedafce6ecb816324713150914fec">get_version</a>();
<a name="l00501"></a>00501 d_protocol = rs-><a class="code" href="classlibdap_1_1Response.html#e33bebc83bcfbd2bf958697e4516b2d7">get_protocol</a>();
<a name="l00502"></a>00502
<a name="l00503"></a>00503 <span class="keywordflow">switch</span> (rs-><a class="code" href="classlibdap_1_1Response.html#b69844a814ec4036a12336640b06e279">get_type</a>()) {
<a name="l00504"></a>00504 <span class="keywordflow">case</span> <a class="code" href="namespacelibdap.html#e7466ed8496f06654ec276eac907c06a742dd62797a6ff77549a1803a4e77d79">dods_error</a>: {
<a name="l00505"></a>00505 <a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> e;
<a name="l00506"></a>00506 <span class="keywordflow">if</span> (!e.<a class="code" href="classlibdap_1_1Error.html#c705b3c1cfab1f7530d66a974eb0e8b6" title="Parse an Error object.">parse</a>(rs-><a class="code" href="classlibdap_1_1Response.html#5b4903bb627c5e6ccd4cd50712e1f0a1">get_stream</a>())) {
<a name="l00507"></a>00507 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1InternalErr.html" title="A class for software fault reporting.">InternalErr</a>(__FILE__, __LINE__,
<a name="l00508"></a>00508 <span class="stringliteral">"Could not parse error returned from server."</span>);
<a name="l00509"></a>00509 <span class="keywordflow">break</span>;
<a name="l00510"></a>00510 }
<a name="l00511"></a>00511 <span class="keywordflow">throw</span> e;
<a name="l00512"></a>00512 <span class="keywordflow">break</span>;
<a name="l00513"></a>00513 }
<a name="l00514"></a>00514
<a name="l00515"></a>00515 <span class="keywordflow">case</span> <a class="code" href="namespacelibdap.html#e7466ed8496f06654ec276eac907c06aa4a8434126fdf1a42a77c74409973b54">web_error</a>:
<a name="l00516"></a>00516 <span class="comment">// We should never get here; a web error should be picked up read_url</span>
<a name="l00517"></a>00517 <span class="comment">// (called by fetch_url) and result in a thrown Error object.</span>
<a name="l00518"></a>00518 <span class="keywordflow">break</span>;
<a name="l00519"></a>00519
<a name="l00520"></a>00520 <span class="keywordflow">case</span> <a class="code" href="namespacelibdap.html#e7466ed8496f06654ec276eac907c06ae5a70721811fccc5ee73852269b01a01">dods_dds</a>:
<a name="l00521"></a>00521 <span class="keywordflow">default</span>:
<a name="l00522"></a>00522 <span class="comment">// DDS::prase throws an exception on error.</span>
<a name="l00523"></a>00523 <span class="keywordflow">try</span> {
<a name="l00524"></a>00524 dds.<a class="code" href="classlibdap_1_1DDS.html#733c8e49ed42ab47d74afe68056340e6" title="Parse a DDS from a file with the given name.">parse</a>(rs-><a class="code" href="classlibdap_1_1Response.html#5b4903bb627c5e6ccd4cd50712e1f0a1">get_stream</a>()); <span class="comment">// read and parse the dds from a file</span>
<a name="l00525"></a>00525 }
<a name="l00526"></a>00526 <span class="keywordflow">catch</span> (<a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> &e) {
<a name="l00527"></a>00527 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00528"></a>00528 <span class="keywordflow">throw</span> e;
<a name="l00529"></a>00529 }
<a name="l00530"></a>00530 <span class="keywordflow">break</span>;
<a name="l00531"></a>00531
<a name="l00532"></a>00532 <span class="preprocessor">#if 0</span>
<a name="l00533"></a>00533 <span class="preprocessor"></span> <span class="comment">// See the comment in process_data() and bug 706. 03/22/04 jhrg</span>
<a name="l00534"></a>00534 <span class="keywordflow">default</span>:
<a name="l00535"></a>00535 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a>(<span class="stringliteral">"The site did not return a valid response (it lacked the\nexpected content description header value of 'dods_dds').\nThis may indicate that the server at the site is not correctly\nconfigured, or that the URL has changed."</span>);
<a name="l00536"></a>00536 <span class="preprocessor">#endif</span>
<a name="l00537"></a>00537 <span class="preprocessor"></span> }
<a name="l00538"></a>00538
<a name="l00539"></a>00539 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00540"></a>00540 }
<a name="l00541"></a>00541
<a name="l00558"></a>00558 <span class="keywordtype">void</span>
<a name="l00559"></a><a class="code" href="classlibdap_1_1Connect.html#08795a9e160db409423fcd9058ba975d">00559</a> <a class="code" href="classlibdap_1_1Connect.html#08795a9e160db409423fcd9058ba975d" title="Get the DDS from a server.">Connect::request_dds_url</a>(<a class="code" href="classlibdap_1_1DDS.html">DDS</a> &dds)
<a name="l00560"></a>00560 {
<a name="l00561"></a>00561 <span class="keywordtype">string</span> use_url = _URL + <span class="stringliteral">"?"</span> + _proj + _sel ;
<a name="l00562"></a>00562 <a class="code" href="classlibdap_1_1Response.html">Response</a> *rs = 0;
<a name="l00563"></a>00563 <span class="keywordflow">try</span> {
<a name="l00564"></a>00564 rs = d_http-><a class="code" href="classlibdap_1_1HTTPConnect.html#5e3558838e245a96c9392b33ef4ba298">fetch_url</a>(use_url);
<a name="l00565"></a>00565 }
<a name="l00566"></a>00566 <span class="keywordflow">catch</span> (<a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> &e) {
<a name="l00567"></a>00567 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00568"></a>00568 <span class="keywordflow">throw</span> e;
<a name="l00569"></a>00569 }
<a name="l00570"></a>00570
<a name="l00571"></a>00571 d_version = rs-><a class="code" href="classlibdap_1_1Response.html#654eedafce6ecb816324713150914fec">get_version</a>();
<a name="l00572"></a>00572 d_protocol = rs-><a class="code" href="classlibdap_1_1Response.html#e33bebc83bcfbd2bf958697e4516b2d7">get_protocol</a>();
<a name="l00573"></a>00573
<a name="l00574"></a>00574 <span class="keywordflow">switch</span> (rs-><a class="code" href="classlibdap_1_1Response.html#b69844a814ec4036a12336640b06e279">get_type</a>()) {
<a name="l00575"></a>00575 <span class="keywordflow">case</span> <a class="code" href="namespacelibdap.html#e7466ed8496f06654ec276eac907c06a742dd62797a6ff77549a1803a4e77d79">dods_error</a>: {
<a name="l00576"></a>00576 <a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> e;
<a name="l00577"></a>00577 <span class="keywordflow">if</span> (!e.<a class="code" href="classlibdap_1_1Error.html#c705b3c1cfab1f7530d66a974eb0e8b6" title="Parse an Error object.">parse</a>(rs-><a class="code" href="classlibdap_1_1Response.html#5b4903bb627c5e6ccd4cd50712e1f0a1">get_stream</a>())) {
<a name="l00578"></a>00578 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1InternalErr.html" title="A class for software fault reporting.">InternalErr</a>(__FILE__, __LINE__,
<a name="l00579"></a>00579 <span class="stringliteral">"Could not parse error returned from server."</span>);
<a name="l00580"></a>00580 <span class="keywordflow">break</span>;
<a name="l00581"></a>00581 }
<a name="l00582"></a>00582 <span class="keywordflow">throw</span> e;
<a name="l00583"></a>00583 <span class="keywordflow">break</span>;
<a name="l00584"></a>00584 }
<a name="l00585"></a>00585
<a name="l00586"></a>00586 <span class="keywordflow">case</span> <a class="code" href="namespacelibdap.html#e7466ed8496f06654ec276eac907c06aa4a8434126fdf1a42a77c74409973b54">web_error</a>:
<a name="l00587"></a>00587 <span class="comment">// We should never get here; a web error should be picked up read_url</span>
<a name="l00588"></a>00588 <span class="comment">// (called by fetch_url) and result in a thrown Error object.</span>
<a name="l00589"></a>00589 <span class="keywordflow">break</span>;
<a name="l00590"></a>00590
<a name="l00591"></a>00591 <span class="keywordflow">case</span> <a class="code" href="namespacelibdap.html#e7466ed8496f06654ec276eac907c06ae5a70721811fccc5ee73852269b01a01">dods_dds</a>:
<a name="l00592"></a>00592 <span class="keywordflow">default</span>:
<a name="l00593"></a>00593 <span class="comment">// DDS::prase throws an exception on error.</span>
<a name="l00594"></a>00594 <span class="keywordflow">try</span> {
<a name="l00595"></a>00595 dds.<a class="code" href="classlibdap_1_1DDS.html#733c8e49ed42ab47d74afe68056340e6" title="Parse a DDS from a file with the given name.">parse</a>(rs-><a class="code" href="classlibdap_1_1Response.html#5b4903bb627c5e6ccd4cd50712e1f0a1">get_stream</a>()); <span class="comment">// read and parse the dds from a file</span>
<a name="l00596"></a>00596 }
<a name="l00597"></a>00597 <span class="keywordflow">catch</span> (<a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> &e) {
<a name="l00598"></a>00598 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00599"></a>00599 <span class="keywordflow">throw</span> e;
<a name="l00600"></a>00600 }
<a name="l00601"></a>00601 <span class="keywordflow">break</span>;
<a name="l00602"></a>00602 }
<a name="l00603"></a>00603
<a name="l00604"></a>00604 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00605"></a>00605 }
<a name="l00606"></a>00606
<a name="l00618"></a>00618 <span class="keywordtype">void</span>
<a name="l00619"></a><a class="code" href="classlibdap_1_1Connect.html#4395cc18cf5ec1a5167795a5a5491958">00619</a> <a class="code" href="classlibdap_1_1Connect.html#4395cc18cf5ec1a5167795a5a5491958" title="Get the DDX from a server.">Connect::request_ddx</a>(<a class="code" href="classlibdap_1_1DDS.html">DDS</a> &dds, <span class="keywordtype">string</span> expr)
<a name="l00620"></a>00620 {
<a name="l00621"></a>00621 <span class="keywordtype">string</span> proj, sel;
<a name="l00622"></a>00622 string::size_type dotpos = expr.find(<span class="charliteral">'&'</span>);
<a name="l00623"></a>00623 <span class="keywordflow">if</span> (dotpos != expr.npos) {
<a name="l00624"></a>00624 proj = expr.substr(0, dotpos);
<a name="l00625"></a>00625 sel = expr.substr(dotpos);
<a name="l00626"></a>00626 }
<a name="l00627"></a>00627 <span class="keywordflow">else</span> {
<a name="l00628"></a>00628 proj = expr;
<a name="l00629"></a>00629 sel = <span class="stringliteral">""</span>;
<a name="l00630"></a>00630 }
<a name="l00631"></a>00631
<a name="l00632"></a>00632 <span class="keywordtype">string</span> ddx_url = _URL + <span class="stringliteral">".ddx"</span> + <span class="stringliteral">"?"</span>
<a name="l00633"></a>00633 + <a class="code" href="namespacelibdap.html#dc33774947740cc181b6d4d7ca90e22d">id2www_ce</a>(_proj + proj + _sel + sel);
<a name="l00634"></a>00634
<a name="l00635"></a>00635 <a class="code" href="classlibdap_1_1Response.html">Response</a> *rs = 0;
<a name="l00636"></a>00636 <span class="keywordflow">try</span> {
<a name="l00637"></a>00637 rs = d_http-><a class="code" href="classlibdap_1_1HTTPConnect.html#5e3558838e245a96c9392b33ef4ba298">fetch_url</a>(ddx_url);
<a name="l00638"></a>00638 }
<a name="l00639"></a>00639 <span class="keywordflow">catch</span> (<a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> &e) {
<a name="l00640"></a>00640 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00641"></a>00641 <span class="keywordflow">throw</span> e;
<a name="l00642"></a>00642 }
<a name="l00643"></a>00643
<a name="l00644"></a>00644 d_version = rs-><a class="code" href="classlibdap_1_1Response.html#654eedafce6ecb816324713150914fec">get_version</a>();
<a name="l00645"></a>00645 d_protocol = rs-><a class="code" href="classlibdap_1_1Response.html#e33bebc83bcfbd2bf958697e4516b2d7">get_protocol</a>();
<a name="l00646"></a>00646
<a name="l00647"></a>00647 <span class="keywordflow">switch</span> (rs-><a class="code" href="classlibdap_1_1Response.html#b69844a814ec4036a12336640b06e279">get_type</a>()) {
<a name="l00648"></a>00648 <span class="keywordflow">case</span> <a class="code" href="namespacelibdap.html#e7466ed8496f06654ec276eac907c06a742dd62797a6ff77549a1803a4e77d79">dods_error</a>: {
<a name="l00649"></a>00649 <a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> e;
<a name="l00650"></a>00650 <span class="keywordflow">if</span> (!e.<a class="code" href="classlibdap_1_1Error.html#c705b3c1cfab1f7530d66a974eb0e8b6" title="Parse an Error object.">parse</a>(rs-><a class="code" href="classlibdap_1_1Response.html#5b4903bb627c5e6ccd4cd50712e1f0a1">get_stream</a>())) {
<a name="l00651"></a>00651 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1InternalErr.html" title="A class for software fault reporting.">InternalErr</a>(__FILE__, __LINE__,
<a name="l00652"></a>00652 <span class="stringliteral">"Could not parse error returned from server."</span>);
<a name="l00653"></a>00653 <span class="keywordflow">break</span>;
<a name="l00654"></a>00654 }
<a name="l00655"></a>00655 <span class="keywordflow">throw</span> e;
<a name="l00656"></a>00656 <span class="keywordflow">break</span>;
<a name="l00657"></a>00657 }
<a name="l00658"></a>00658
<a name="l00659"></a>00659 <span class="keywordflow">case</span> <a class="code" href="namespacelibdap.html#e7466ed8496f06654ec276eac907c06aa4a8434126fdf1a42a77c74409973b54">web_error</a>:
<a name="l00660"></a>00660 <span class="comment">// We should never get here; a web error should be picked up read_url</span>
<a name="l00661"></a>00661 <span class="comment">// (called by fetch_url) and result in a thrown Error object.</span>
<a name="l00662"></a>00662 <span class="keywordflow">break</span>;
<a name="l00663"></a>00663
<a name="l00664"></a>00664 <span class="keywordflow">case</span> <a class="code" href="namespacelibdap.html#e7466ed8496f06654ec276eac907c06a605a335e5665d5f3ac75cacf42a15ae8">dap4_ddx</a>:
<a name="l00665"></a>00665 <span class="keywordflow">default</span>:
<a name="l00666"></a>00666 <span class="comment">// DDS::parse throws an exception on error.</span>
<a name="l00667"></a>00667 <span class="keywordflow">try</span> {
<a name="l00668"></a>00668 <span class="preprocessor">#if 0</span>
<a name="l00669"></a>00669 <span class="preprocessor"></span> <span class="keywordtype">string</span> blob;
<a name="l00670"></a>00670 <span class="preprocessor">#endif</span>
<a name="l00671"></a>00671 <span class="preprocessor"></span> <a class="code" href="classlibdap_1_1DDXParser.html">DDXParser</a> ddxp(dds.<a class="code" href="classlibdap_1_1DDS.html#a75678c230c20aaf7626f954de04644f">get_factory</a>());
<a name="l00672"></a>00672 ddxp.intern_stream(rs-><a class="code" href="classlibdap_1_1Response.html#5b4903bb627c5e6ccd4cd50712e1f0a1">get_stream</a>(), &dds<span class="comment">/*, &blob***/</span>);
<a name="l00673"></a>00673 <span class="preprocessor">#if 0</span>
<a name="l00674"></a>00674 <span class="preprocessor"></span> dds.<a class="code" href="classlibdap_1_1DDS.html#733c8e49ed42ab47d74afe68056340e6" title="Parse a DDS from a file with the given name.">parse</a>(rs-><a class="code" href="classlibdap_1_1Response.html#5b4903bb627c5e6ccd4cd50712e1f0a1">get_stream</a>()); <span class="comment">// read and parse the dds from a file</span>
<a name="l00675"></a>00675 <span class="preprocessor">#endif</span>
<a name="l00676"></a>00676 <span class="preprocessor"></span> }
<a name="l00677"></a>00677 <span class="keywordflow">catch</span> (<a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> &e) {
<a name="l00678"></a>00678 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00679"></a>00679 <span class="keywordflow">throw</span> e;
<a name="l00680"></a>00680 }
<a name="l00681"></a>00681 <span class="keywordflow">break</span>;
<a name="l00682"></a>00682
<a name="l00683"></a>00683 <span class="preprocessor">#if 0</span>
<a name="l00684"></a>00684 <span class="preprocessor"></span> <span class="comment">// See the comment in process_data() and bug 706. 03/22/04 jhrg</span>
<a name="l00685"></a>00685 <span class="keywordflow">default</span>:
<a name="l00686"></a>00686 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a>(<span class="stringliteral">"The site did not return a valid response (it lacked the\nexpected content description header value of 'dods_ddx').\nThis may indicate that the server at the site is not correctly\nconfigured, or that the URL has changed."</span>);
<a name="l00687"></a>00687 <span class="preprocessor">#endif</span>
<a name="l00688"></a>00688 <span class="preprocessor"></span> }
<a name="l00689"></a>00689
<a name="l00690"></a>00690 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00691"></a>00691 }
<a name="l00692"></a>00692
<a name="l00695"></a>00695 <span class="keywordtype">void</span>
<a name="l00696"></a><a class="code" href="classlibdap_1_1Connect.html#9a3e1fe01455b60a90a1974a7e871bb4">00696</a> <a class="code" href="classlibdap_1_1Connect.html#9a3e1fe01455b60a90a1974a7e871bb4" title="The &#39;url&#39; version of request_ddx.">Connect::request_ddx_url</a>(<a class="code" href="classlibdap_1_1DDS.html">DDS</a> &dds)
<a name="l00697"></a>00697 {
<a name="l00698"></a>00698 <span class="keywordtype">string</span> use_url = _URL + <span class="stringliteral">"?"</span> + _proj + _sel ;
<a name="l00699"></a>00699
<a name="l00700"></a>00700 <a class="code" href="classlibdap_1_1Response.html">Response</a> *rs = 0;
<a name="l00701"></a>00701 <span class="keywordflow">try</span> {
<a name="l00702"></a>00702 rs = d_http-><a class="code" href="classlibdap_1_1HTTPConnect.html#5e3558838e245a96c9392b33ef4ba298">fetch_url</a>(use_url);
<a name="l00703"></a>00703 }
<a name="l00704"></a>00704 <span class="keywordflow">catch</span> (<a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> &e) {
<a name="l00705"></a>00705 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00706"></a>00706 <span class="keywordflow">throw</span> e;
<a name="l00707"></a>00707 }
<a name="l00708"></a>00708
<a name="l00709"></a>00709 d_version = rs-><a class="code" href="classlibdap_1_1Response.html#654eedafce6ecb816324713150914fec">get_version</a>();
<a name="l00710"></a>00710 d_protocol = rs-><a class="code" href="classlibdap_1_1Response.html#e33bebc83bcfbd2bf958697e4516b2d7">get_protocol</a>();
<a name="l00711"></a>00711
<a name="l00712"></a>00712 <span class="keywordflow">switch</span> (rs-><a class="code" href="classlibdap_1_1Response.html#b69844a814ec4036a12336640b06e279">get_type</a>()) {
<a name="l00713"></a>00713 <span class="keywordflow">case</span> <a class="code" href="namespacelibdap.html#e7466ed8496f06654ec276eac907c06a742dd62797a6ff77549a1803a4e77d79">dods_error</a>: {
<a name="l00714"></a>00714 <a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> e;
<a name="l00715"></a>00715 <span class="keywordflow">if</span> (!e.<a class="code" href="classlibdap_1_1Error.html#c705b3c1cfab1f7530d66a974eb0e8b6" title="Parse an Error object.">parse</a>(rs-><a class="code" href="classlibdap_1_1Response.html#5b4903bb627c5e6ccd4cd50712e1f0a1">get_stream</a>())) {
<a name="l00716"></a>00716 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1InternalErr.html" title="A class for software fault reporting.">InternalErr</a>(__FILE__, __LINE__,
<a name="l00717"></a>00717 <span class="stringliteral">"Could not parse error returned from server."</span>);
<a name="l00718"></a>00718 <span class="keywordflow">break</span>;
<a name="l00719"></a>00719 }
<a name="l00720"></a>00720 <span class="keywordflow">throw</span> e;
<a name="l00721"></a>00721 <span class="keywordflow">break</span>;
<a name="l00722"></a>00722 }
<a name="l00723"></a>00723
<a name="l00724"></a>00724 <span class="keywordflow">case</span> <a class="code" href="namespacelibdap.html#e7466ed8496f06654ec276eac907c06aa4a8434126fdf1a42a77c74409973b54">web_error</a>:
<a name="l00725"></a>00725 <span class="comment">// We should never get here; a web error should be picked up read_url</span>
<a name="l00726"></a>00726 <span class="comment">// (called by fetch_url) and result in a thrown Error object.</span>
<a name="l00727"></a>00727 <span class="keywordflow">break</span>;
<a name="l00728"></a>00728
<a name="l00729"></a>00729 <span class="keywordflow">case</span> <a class="code" href="namespacelibdap.html#e7466ed8496f06654ec276eac907c06a605a335e5665d5f3ac75cacf42a15ae8">dap4_ddx</a>:
<a name="l00730"></a>00730 <span class="keywordflow">default</span>:
<a name="l00731"></a>00731 <span class="comment">// DDS::prase throws an exception on error.</span>
<a name="l00732"></a>00732 <span class="keywordflow">try</span> {
<a name="l00733"></a>00733 dds.<a class="code" href="classlibdap_1_1DDS.html#733c8e49ed42ab47d74afe68056340e6" title="Parse a DDS from a file with the given name.">parse</a>(rs-><a class="code" href="classlibdap_1_1Response.html#5b4903bb627c5e6ccd4cd50712e1f0a1">get_stream</a>()); <span class="comment">// read and parse the dds from a file</span>
<a name="l00734"></a>00734 }
<a name="l00735"></a>00735 <span class="keywordflow">catch</span> (<a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> &e) {
<a name="l00736"></a>00736 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00737"></a>00737 <span class="keywordflow">throw</span> e;
<a name="l00738"></a>00738 }
<a name="l00739"></a>00739 <span class="keywordflow">break</span>;
<a name="l00740"></a>00740
<a name="l00741"></a>00741 <span class="preprocessor">#if 0</span>
<a name="l00742"></a>00742 <span class="preprocessor"></span> <span class="comment">// See the comment in process_data() and bug 706. 03/22/04 jhrg</span>
<a name="l00743"></a>00743 <span class="keywordflow">default</span>:
<a name="l00744"></a>00744 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a>(<span class="stringliteral">"The site did not return a valid response (it lacked the\nexpected content description header value of 'dods_ddx').\nThis may indicate that the server at the site is not correctly\nconfigured, or that the URL has changed."</span>);
<a name="l00745"></a>00745 <span class="preprocessor">#endif</span>
<a name="l00746"></a>00746 <span class="preprocessor"></span> }
<a name="l00747"></a>00747
<a name="l00748"></a>00748 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00749"></a>00749 }
<a name="l00750"></a>00750
<a name="l00766"></a>00766 <span class="keywordtype">void</span>
<a name="l00767"></a><a class="code" href="classlibdap_1_1Connect.html#814e98ac5e99927ccc79bb0feb32d241">00767</a> <a class="code" href="classlibdap_1_1Connect.html#814e98ac5e99927ccc79bb0feb32d241" title="Get the DAS from a server.">Connect::request_data</a>(<a class="code" href="classlibdap_1_1DataDDS.html" title="Holds a DAP2 DDS.">DataDDS</a> &data, <span class="keywordtype">string</span> expr)
<a name="l00768"></a>00768 {
<a name="l00769"></a>00769 <span class="keywordtype">string</span> proj, sel;
<a name="l00770"></a>00770 string::size_type dotpos = expr.find(<span class="charliteral">'&'</span>);
<a name="l00771"></a>00771 <span class="keywordflow">if</span> (dotpos != expr.npos) {
<a name="l00772"></a>00772 proj = expr.substr(0, dotpos);
<a name="l00773"></a>00773 sel = expr.substr(dotpos);
<a name="l00774"></a>00774 }
<a name="l00775"></a>00775 <span class="keywordflow">else</span> {
<a name="l00776"></a>00776 proj = expr;
<a name="l00777"></a>00777 sel = <span class="stringliteral">""</span>;
<a name="l00778"></a>00778 }
<a name="l00779"></a>00779
<a name="l00780"></a>00780 <span class="keywordtype">string</span> data_url = _URL + <span class="stringliteral">".dods?"</span>
<a name="l00781"></a>00781 + <a class="code" href="namespacelibdap.html#dc33774947740cc181b6d4d7ca90e22d">id2www_ce</a>(_proj + proj + _sel + sel);
<a name="l00782"></a>00782
<a name="l00783"></a>00783 <a class="code" href="classlibdap_1_1Response.html">Response</a> *rs = 0;
<a name="l00784"></a>00784 <span class="comment">// We need to catch Error exceptions to ensure calling close_output.</span>
<a name="l00785"></a>00785 <span class="keywordflow">try</span> {
<a name="l00786"></a>00786 rs = d_http-><a class="code" href="classlibdap_1_1HTTPConnect.html#5e3558838e245a96c9392b33ef4ba298">fetch_url</a>(data_url);
<a name="l00787"></a>00787 d_version = rs-><a class="code" href="classlibdap_1_1Response.html#654eedafce6ecb816324713150914fec">get_version</a>();
<a name="l00788"></a>00788 d_protocol = rs-><a class="code" href="classlibdap_1_1Response.html#e33bebc83bcfbd2bf958697e4516b2d7">get_protocol</a>();
<a name="l00789"></a>00789
<a name="l00790"></a>00790 process_data(data, rs);
<a name="l00791"></a>00791 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00792"></a>00792 }
<a name="l00793"></a>00793 <span class="keywordflow">catch</span> (<a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> &e) {
<a name="l00794"></a>00794 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00795"></a>00795 <span class="keywordflow">throw</span> e;
<a name="l00796"></a>00796 }
<a name="l00797"></a>00797 }
<a name="l00798"></a>00798
<a name="l00816"></a>00816 <span class="keywordtype">void</span>
<a name="l00817"></a><a class="code" href="classlibdap_1_1Connect.html#c8582099411b8d74b03e761129df5b5c">00817</a> <a class="code" href="classlibdap_1_1Connect.html#c8582099411b8d74b03e761129df5b5c" title="Get the DAS from a server.">Connect::request_data_url</a>(<a class="code" href="classlibdap_1_1DataDDS.html" title="Holds a DAP2 DDS.">DataDDS</a> &data)
<a name="l00818"></a>00818 {
<a name="l00819"></a>00819 <span class="keywordtype">string</span> use_url = _URL + <span class="stringliteral">"?"</span> + _proj + _sel ;
<a name="l00820"></a>00820 <a class="code" href="classlibdap_1_1Response.html">Response</a> *rs = 0;
<a name="l00821"></a>00821 <span class="comment">// We need to catch Error exceptions to ensure calling close_output.</span>
<a name="l00822"></a>00822 <span class="keywordflow">try</span> {
<a name="l00823"></a>00823 rs = d_http-><a class="code" href="classlibdap_1_1HTTPConnect.html#5e3558838e245a96c9392b33ef4ba298">fetch_url</a>(use_url);
<a name="l00824"></a>00824 d_version = rs-><a class="code" href="classlibdap_1_1Response.html#654eedafce6ecb816324713150914fec">get_version</a>();
<a name="l00825"></a>00825 d_protocol = rs-><a class="code" href="classlibdap_1_1Response.html#e33bebc83bcfbd2bf958697e4516b2d7">get_protocol</a>();
<a name="l00826"></a>00826
<a name="l00827"></a>00827 process_data(data, rs);
<a name="l00828"></a>00828 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00829"></a>00829 }
<a name="l00830"></a>00830 <span class="keywordflow">catch</span> (<a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a> &e) {
<a name="l00831"></a>00831 <span class="keyword">delete</span> rs; rs = 0;
<a name="l00832"></a>00832 <span class="keywordflow">throw</span> e;
<a name="l00833"></a>00833 }
<a name="l00834"></a>00834 }
<a name="l00835"></a>00835
<a name="l00836"></a>00836
<a name="l00853"></a>00853 <span class="keywordtype">void</span>
<a name="l00854"></a><a class="code" href="classlibdap_1_1Connect.html#e50d98d353023b9786c9bd5b0833a7de">00854</a> <a class="code" href="classlibdap_1_1Connect.html#e50d98d353023b9786c9bd5b0833a7de" title="Read data which is preceded by MIME headers.">Connect::read_data</a>(<a class="code" href="classlibdap_1_1DataDDS.html" title="Holds a DAP2 DDS.">DataDDS</a> &data, <a class="code" href="classlibdap_1_1Response.html">Response</a> *rs)
<a name="l00855"></a>00855 {
<a name="l00856"></a>00856 <span class="keywordflow">if</span> (!rs)
<a name="l00857"></a>00857 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1InternalErr.html" title="A class for software fault reporting.">InternalErr</a>(__FILE__, __LINE__, <span class="stringliteral">"Response object is null."</span>);
<a name="l00858"></a>00858
<a name="l00859"></a>00859 <span class="comment">// Read from data_source and parse the MIME headers specific to DAP2.</span>
<a name="l00860"></a>00860 parse_mime(rs);
<a name="l00861"></a>00861
<a name="l00862"></a>00862 <a class="code" href="classlibdap_1_1Connect.html#486b095a58614dfc2be0321035784306" title="Read data from a file which does not have response MIME headers. This method is a...">read_data_no_mime</a>(data, rs);
<a name="l00863"></a>00863 }
<a name="l00864"></a>00864
<a name="l00873"></a>00873 <span class="keywordtype">void</span>
<a name="l00874"></a><a class="code" href="classlibdap_1_1Connect.html#486b095a58614dfc2be0321035784306">00874</a> <a class="code" href="classlibdap_1_1Connect.html#486b095a58614dfc2be0321035784306" title="Read data from a file which does not have response MIME headers. This method is a...">Connect::read_data_no_mime</a>(<a class="code" href="classlibdap_1_1DataDDS.html" title="Holds a DAP2 DDS.">DataDDS</a> &data, <a class="code" href="classlibdap_1_1Response.html">Response</a> *rs)
<a name="l00875"></a>00875 {
<a name="l00876"></a>00876 d_version = rs-><a class="code" href="classlibdap_1_1Response.html#654eedafce6ecb816324713150914fec">get_version</a>();
<a name="l00877"></a>00877 d_protocol = rs-><a class="code" href="classlibdap_1_1Response.html#e33bebc83bcfbd2bf958697e4516b2d7">get_protocol</a>();
<a name="l00878"></a>00878
<a name="l00879"></a>00879 process_data(data, rs);
<a name="l00880"></a>00880 }
<a name="l00881"></a>00881
<a name="l00882"></a>00882 <span class="keywordtype">bool</span>
<a name="l00883"></a><a class="code" href="classlibdap_1_1Connect.html#3901ce9383c3df11d1a1c28d4a09bb54">00883</a> <a class="code" href="classlibdap_1_1Connect.html#3901ce9383c3df11d1a1c28d4a09bb54">Connect::is_local</a>()
<a name="l00884"></a>00884 {
<a name="l00885"></a>00885 <span class="keywordflow">return</span> _local;
<a name="l00886"></a>00886 }
<a name="l00887"></a>00887
<a name="l00904"></a>00904 <span class="keywordtype">string</span>
<a name="l00905"></a><a class="code" href="classlibdap_1_1Connect.html#523bf24520185e3d71f36ac0203b98e6">00905</a> <a class="code" href="classlibdap_1_1Connect.html#523bf24520185e3d71f36ac0203b98e6" title="Get the object&#39;s URL.">Connect::URL</a>(<span class="keywordtype">bool</span> ce)
<a name="l00906"></a>00906 {
<a name="l00907"></a>00907 <span class="keywordflow">if</span> (_local)
<a name="l00908"></a>00908 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1InternalErr.html" title="A class for software fault reporting.">InternalErr</a>(__FILE__, __LINE__,
<a name="l00909"></a>00909 <span class="stringliteral">"URL(): This call is only valid for a DAP data source."</span>);
<a name="l00910"></a>00910
<a name="l00911"></a>00911 <span class="keywordflow">if</span> (ce)
<a name="l00912"></a>00912 <span class="keywordflow">return</span> _URL + <span class="stringliteral">"?"</span> + _proj + _sel;
<a name="l00913"></a>00913 <span class="keywordflow">else</span>
<a name="l00914"></a>00914 <span class="keywordflow">return</span> _URL;
<a name="l00915"></a>00915 }
<a name="l00916"></a>00916
<a name="l00925"></a>00925 <span class="keywordtype">string</span>
<a name="l00926"></a><a class="code" href="classlibdap_1_1Connect.html#0e55cc99530cab779ae83984c2a22f51">00926</a> <a class="code" href="classlibdap_1_1Connect.html#0e55cc99530cab779ae83984c2a22f51" title="Get the Connect&#39;s constraint expression.">Connect::CE</a>()
<a name="l00927"></a>00927 {
<a name="l00928"></a>00928 <span class="keywordflow">if</span> (_local)
<a name="l00929"></a>00929 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1InternalErr.html" title="A class for software fault reporting.">InternalErr</a>(__FILE__, __LINE__,
<a name="l00930"></a>00930 <span class="stringliteral">"CE(): This call is only valid for a DAP data source."</span>);
<a name="l00931"></a>00931
<a name="l00932"></a>00932 <span class="keywordflow">return</span> _proj + _sel;
<a name="l00933"></a>00933 }
<a name="l00934"></a>00934
<a name="l00940"></a>00940 <span class="keywordtype">void</span>
<a name="l00941"></a><a class="code" href="classlibdap_1_1Connect.html#847af75e149f123a51a560119dfc06aa">00941</a> <a class="code" href="classlibdap_1_1Connect.html#847af75e149f123a51a560119dfc06aa" title="Set the credentials for responding to challenges while dereferencing URLs.">Connect::set_credentials</a>(<span class="keywordtype">string</span> u, <span class="keywordtype">string</span> p)
<a name="l00942"></a>00942 {
<a name="l00943"></a>00943 <span class="keywordflow">if</span> (d_http)
<a name="l00944"></a>00944 d_http-><a class="code" href="classlibdap_1_1HTTPConnect.html#84190d0d80154943ee997c4982a7c96a">set_credentials</a>(u, p);
<a name="l00945"></a>00945 }
<a name="l00946"></a>00946
<a name="l00950"></a>00950 <span class="keywordtype">void</span>
<a name="l00951"></a><a class="code" href="classlibdap_1_1Connect.html#186f76bfea3b61dc3587bcff5760ed8b">00951</a> <a class="code" href="classlibdap_1_1Connect.html#186f76bfea3b61dc3587bcff5760ed8b">Connect::set_accept_deflate</a>(<span class="keywordtype">bool</span> <a class="code" href="namespacelibdap.html#ada86e90b40fc8068dbfe9be79f09e553b0e7efd18178acc018030f0e69565a5">deflate</a>)
<a name="l00952"></a>00952 {
<a name="l00953"></a>00953 <span class="keywordflow">if</span> (d_http)
<a name="l00954"></a>00954 d_http-><a class="code" href="classlibdap_1_1HTTPConnect.html#01d67a5afa18a84ef744b8f222094260">set_accept_deflate</a>(deflate);
<a name="l00955"></a>00955 }
<a name="l00956"></a>00956
<a name="l00962"></a>00962 <span class="keywordtype">void</span>
<a name="l00963"></a><a class="code" href="classlibdap_1_1Connect.html#4af759a2313d9ecbc1db1c811f549379">00963</a> <a class="code" href="classlibdap_1_1Connect.html#4af759a2313d9ecbc1db1c811f549379">Connect::set_xdap_protocol</a>(<span class="keywordtype">int</span> major, <span class="keywordtype">int</span> minor)
<a name="l00964"></a>00964 {
<a name="l00965"></a>00965 <span class="keywordflow">if</span> (d_http)
<a name="l00966"></a>00966 d_http-><a class="code" href="classlibdap_1_1HTTPConnect.html#c232e85c5d2448c66c1a24f62dcbf89a">set_xdap_protocol</a>(major, minor);
<a name="l00967"></a>00967 }
<a name="l00968"></a>00968
<a name="l00972"></a>00972 <span class="keywordtype">void</span>
<a name="l00973"></a><a class="code" href="classlibdap_1_1Connect.html#25c97c4ad0239a9dd10812c880c40efe">00973</a> <a class="code" href="classlibdap_1_1Connect.html#25c97c4ad0239a9dd10812c880c40efe">Connect::set_cache_enabled</a>(<span class="keywordtype">bool</span> cache)
<a name="l00974"></a>00974 {
<a name="l00975"></a>00975 <span class="keywordflow">if</span> (d_http)
<a name="l00976"></a>00976 d_http-><a class="code" href="classlibdap_1_1HTTPConnect.html#af200f19c2a64adc4b17887372dcc595">set_cache_enabled</a>(cache);
<a name="l00977"></a>00977 }
<a name="l00978"></a>00978
<a name="l00979"></a>00979 <span class="keywordtype">bool</span>
<a name="l00980"></a><a class="code" href="classlibdap_1_1Connect.html#00fa7d5e2e658e8c882e07f48562ea62">00980</a> <a class="code" href="classlibdap_1_1Connect.html#00fa7d5e2e658e8c882e07f48562ea62">Connect::is_cache_enabled</a>()
<a name="l00981"></a>00981 {
<a name="l00982"></a>00982 <span class="keywordtype">bool</span> status;
<a name="l00983"></a>00983 <a class="code" href="debug_8h.html#32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cerr << <span class="stringliteral">"Entering is_cache_enabled ("</span> << hex << d_http << dec
<a name="l00984"></a>00984 << <span class="stringliteral">")... "</span>);
<a name="l00985"></a>00985 <span class="keywordflow">if</span> (d_http)
<a name="l00986"></a>00986 status = d_http-><a class="code" href="classlibdap_1_1HTTPConnect.html#1e9a7b25527264a342dbe9c2aff59f2f">is_cache_enabled</a>();
<a name="l00987"></a>00987 <span class="keywordflow">else</span>
<a name="l00988"></a>00988 status = <span class="keyword">false</span>;
<a name="l00989"></a>00989 <a class="code" href="debug_8h.html#0d28d57d1228cf13a4c1288cc4758344">DBGN</a>(cerr << <span class="stringliteral">"exiting"</span> << endl);
<a name="l00990"></a>00990 <span class="keywordflow">return</span> status;
<a name="l00991"></a>00991 }
<a name="l00992"></a>00992
<a name="l00993"></a>00993 } <span class="comment">// namespace libdap</span>
</pre></div></div>
<hr size="1"><address style="text-align: right;"><small>Generated on Wed Oct 7 19:57:07 2009 for libdap++ by
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