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distrib > Mandriva > 2010.0 > i586 > media > contrib-release > by-pkgid > f149f58f4a75af135bdb24f5dfe94165 > files > 104

libdap-doc-3.9.3-3mdv2010.0.i586.rpm

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<h1>ConstraintEvaluator.cc</h1><a href="ConstraintEvaluator_8cc.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// -*- mode: c++; c-basic-offset:4 -*-</span>
<a name="l00002"></a>00002 
<a name="l00003"></a>00003 <span class="comment">// This file is part of libdap, A C++ implementation of the OPeNDAP Data</span>
<a name="l00004"></a>00004 <span class="comment">// Access Protocol.</span>
<a name="l00005"></a>00005 
<a name="l00006"></a>00006 <span class="comment">// Copyright (c) 2002,2003 OPeNDAP, Inc.</span>
<a name="l00007"></a>00007 <span class="comment">// Author: James Gallagher &lt;jgallagher@opendap.org&gt;</span>
<a name="l00008"></a>00008 <span class="comment">//</span>
<a name="l00009"></a>00009 <span class="comment">// This library is free software; you can redistribute it and/or</span>
<a name="l00010"></a>00010 <span class="comment">// modify it under the terms of the GNU Lesser General Public</span>
<a name="l00011"></a>00011 <span class="comment">// License as published by the Free Software Foundation; either</span>
<a name="l00012"></a>00012 <span class="comment">// version 2.1 of the License, or (at your option) any later version.</span>
<a name="l00013"></a>00013 <span class="comment">//</span>
<a name="l00014"></a>00014 <span class="comment">// This library is distributed in the hope that it will be useful,</span>
<a name="l00015"></a>00015 <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00016"></a>00016 <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU</span>
<a name="l00017"></a>00017 <span class="comment">// Lesser General Public License for more details.</span>
<a name="l00018"></a>00018 <span class="comment">//</span>
<a name="l00019"></a>00019 <span class="comment">// You should have received a copy of the GNU Lesser General Public</span>
<a name="l00020"></a>00020 <span class="comment">// License along with this library; if not, write to the Free Software</span>
<a name="l00021"></a>00021 <span class="comment">// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA</span>
<a name="l00022"></a>00022 <span class="comment">//</span>
<a name="l00023"></a>00023 <span class="comment">// You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.</span>
<a name="l00024"></a>00024 
<a name="l00025"></a>00025 <span class="preprocessor">#include "<a class="code" href="config_8h.html">config.h</a>"</span>
<a name="l00026"></a>00026 
<a name="l00027"></a>00027 <span class="keyword">static</span> <span class="keywordtype">char</span> rcsid[] <a class="code" href="config_8h.html#05e109ec893d0b12023d5b0cf4f718c4">not_used</a> =
<a name="l00028"></a>00028     {<span class="stringliteral">"$Id: ConstraintEvaluator.cc 19914 2008-11-25 17:26:22Z jimg $"</span>
<a name="l00029"></a>00029     };
<a name="l00030"></a>00030 
<a name="l00031"></a>00031 <span class="preprocessor">#include "<a class="code" href="ConstraintEvaluator_8h.html">ConstraintEvaluator.h</a>"</span>
<a name="l00032"></a>00032 
<a name="l00033"></a>00033 <span class="preprocessor">#include "<a class="code" href="ce__functions_8h.html">ce_functions.h</a>"</span>
<a name="l00034"></a>00034 <span class="preprocessor">#include "<a class="code" href="parser_8h.html">parser.h</a>"</span>
<a name="l00035"></a>00035 <span class="preprocessor">#include "<a class="code" href="ce__parser_8h.html">ce_parser.h</a>"</span>
<a name="l00036"></a>00036 <span class="preprocessor">#include "<a class="code" href="debug_8h.html">debug.h</a>"</span>
<a name="l00037"></a>00037 
<a name="l00038"></a>00038 <span class="keyword">struct </span>yy_buffer_state;
<a name="l00039"></a>00039 yy_buffer_state *<a class="code" href="ConstraintEvaluator_8cc.html#4a3f755a6cb4d32d04ab0198d051d4a7">ce_expr_scan_string</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *str);
<a name="l00040"></a>00040 <span class="keywordtype">int</span> <a class="code" href="ConstraintEvaluator_8cc.html#ba9ee772d54adb658f5dd2e1b71d3c2b">ce_exprparse</a>(<span class="keywordtype">void</span> *arg);
<a name="l00041"></a>00041 
<a name="l00042"></a>00042 <span class="comment">// Glue routines declared in expr.lex</span>
<a name="l00043"></a>00043 <span class="keywordtype">void</span> <a class="code" href="ConstraintEvaluator_8cc.html#955ba7cba10608969e986cd241a15155">ce_expr_switch_to_buffer</a>(<span class="keywordtype">void</span> *new_buffer);
<a name="l00044"></a>00044 <span class="keywordtype">void</span> <a class="code" href="ConstraintEvaluator_8cc.html#829e836debe59adfa593dc370b8cb2d0">ce_expr_delete_buffer</a>(<span class="keywordtype">void</span> * buffer);
<a name="l00045"></a>00045 <span class="keywordtype">void</span> *<a class="code" href="ConstraintEvaluator_8cc.html#7a3a151376fbd8a427288eab509bfd06">ce_expr_string</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *yy_str);
<a name="l00046"></a>00046 
<a name="l00047"></a>00047 <span class="keyword">namespace </span>libdap {
<a name="l00048"></a>00048 
<a name="l00049"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#61250e6c1cec9b2411a529c7fb4efd94">00049</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#61250e6c1cec9b2411a529c7fb4efd94">ConstraintEvaluator::ConstraintEvaluator</a>()
<a name="l00050"></a>00050 {
<a name="l00051"></a>00051     <a class="code" href="namespacelibdap.html#5eeabecdc04289ca1ed78d333f29129d">register_functions</a>(*<span class="keyword">this</span>);
<a name="l00052"></a>00052 }
<a name="l00053"></a>00053 
<a name="l00054"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#e46662e1cbe013a6f6ad65d2e0c24186">00054</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#e46662e1cbe013a6f6ad65d2e0c24186">ConstraintEvaluator::~ConstraintEvaluator</a>()
<a name="l00055"></a>00055 {
<a name="l00056"></a>00056     <span class="comment">// delete all the constants created by the parser for CE evaluation</span>
<a name="l00057"></a>00057     <span class="keywordflow">for</span> (<a class="code" href="classlibdap_1_1ConstraintEvaluator.html#1c38b776ba27bc78a1e484a45bbe8747">Constants_iter</a> j = constants.begin(); j != constants.end(); j++) {
<a name="l00058"></a>00058         <a class="code" href="classlibdap_1_1BaseType.html" title="The basic data type for the DODS DAP types.">BaseType</a> *btp = *j ;
<a name="l00059"></a>00059         <span class="keyword">delete</span> btp ; btp = 0;
<a name="l00060"></a>00060     }
<a name="l00061"></a>00061 
<a name="l00062"></a>00062     <span class="keywordflow">for</span> (<a class="code" href="classlibdap_1_1ConstraintEvaluator.html#369a03eac7969bb6955cfc90ababb8aa">Clause_iter</a> k = expr.begin(); k != expr.end(); k++) {
<a name="l00063"></a>00063         <a class="code" href="structlibdap_1_1Clause.html" title="Holds a fragment of a constraint expression.">Clause</a> *cp = *k ;
<a name="l00064"></a>00064         <span class="keyword">delete</span> cp ; cp = 0;
<a name="l00065"></a>00065     }
<a name="l00066"></a>00066 }
<a name="l00067"></a>00067 
<a name="l00069"></a>00069 <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#369a03eac7969bb6955cfc90ababb8aa">ConstraintEvaluator::Clause_iter</a>
<a name="l00070"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#81135cc86f8bef397b59577dfa224f62">00070</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#81135cc86f8bef397b59577dfa224f62">ConstraintEvaluator::clause_begin</a>()
<a name="l00071"></a>00071 {
<a name="l00072"></a>00072     <span class="keywordflow">return</span> expr.begin() ;
<a name="l00073"></a>00073 }
<a name="l00074"></a>00074 
<a name="l00077"></a>00077 <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#369a03eac7969bb6955cfc90ababb8aa">ConstraintEvaluator::Clause_iter</a>
<a name="l00078"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#d193b3ca4cef59d2b46c04ab08f4675f">00078</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#d193b3ca4cef59d2b46c04ab08f4675f">ConstraintEvaluator::clause_end</a>()
<a name="l00079"></a>00079 {
<a name="l00080"></a>00080     <span class="keywordflow">return</span> expr.end() ;
<a name="l00081"></a>00081 }
<a name="l00082"></a>00082 
<a name="l00085"></a>00085 <span class="keywordtype">bool</span>
<a name="l00086"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#5c53cfac881da05b7ed6eb6404b0c4f9">00086</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#5c53cfac881da05b7ed6eb6404b0c4f9">ConstraintEvaluator::clause_value</a>(Clause_iter &amp;iter, <a class="code" href="classlibdap_1_1DDS.html">DDS</a> &amp;dds<span class="comment">/*, const string &amp;***/</span>)
<a name="l00087"></a>00087 {
<a name="l00088"></a>00088     <span class="keywordflow">if</span> (expr.empty())
<a name="l00089"></a>00089         <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="l00090"></a>00090                           <span class="stringliteral">"There are no CE clauses for *this* DDS object."</span>);
<a name="l00091"></a>00091 
<a name="l00092"></a>00092     <span class="keywordflow">return</span> (*iter)-&gt;value(dds);
<a name="l00093"></a>00093 }
<a name="l00094"></a>00094 
<a name="l00107"></a>00107 <span class="keywordtype">void</span>
<a name="l00108"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#796b573bb1ec8bbce8c22c4caf58af2e">00108</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#796b573bb1ec8bbce8c22c4caf58af2e" title="Add a clause to a constraint expression.">ConstraintEvaluator::append_clause</a>(<span class="keywordtype">int</span> op, <a class="code" href="classlibdap_1_1rvalue.html">rvalue</a> *arg1, <a class="code" href="namespacelibdap.html#443d3b7d9ceaa4ec25e5bfcc555ce056">rvalue_list</a> *arg2)
<a name="l00109"></a>00109 {
<a name="l00110"></a>00110     <a class="code" href="structlibdap_1_1Clause.html" title="Holds a fragment of a constraint expression.">Clause</a> *clause = <span class="keyword">new</span> <a class="code" href="structlibdap_1_1Clause.html" title="Holds a fragment of a constraint expression.">Clause</a>(op, arg1, arg2);
<a name="l00111"></a>00111 
<a name="l00112"></a>00112     expr.push_back(clause);
<a name="l00113"></a>00113 }
<a name="l00114"></a>00114 
<a name="l00124"></a>00124 <span class="keywordtype">void</span>
<a name="l00125"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#2439b21977caf80d57c5faa0342dfcb4">00125</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#796b573bb1ec8bbce8c22c4caf58af2e" title="Add a clause to a constraint expression.">ConstraintEvaluator::append_clause</a>(bool_func func, <a class="code" href="namespacelibdap.html#443d3b7d9ceaa4ec25e5bfcc555ce056">rvalue_list</a> *args)
<a name="l00126"></a>00126 {
<a name="l00127"></a>00127     <a class="code" href="structlibdap_1_1Clause.html" title="Holds a fragment of a constraint expression.">Clause</a> *clause = <span class="keyword">new</span> <a class="code" href="structlibdap_1_1Clause.html" title="Holds a fragment of a constraint expression.">Clause</a>(func, args);
<a name="l00128"></a>00128 
<a name="l00129"></a>00129     expr.push_back(clause);
<a name="l00130"></a>00130 }
<a name="l00131"></a>00131 
<a name="l00141"></a>00141 <span class="keywordtype">void</span>
<a name="l00142"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#f4769219d99fe7ec3f4f4d7b1cd560dc">00142</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#796b573bb1ec8bbce8c22c4caf58af2e" title="Add a clause to a constraint expression.">ConstraintEvaluator::append_clause</a>(btp_func func, <a class="code" href="namespacelibdap.html#443d3b7d9ceaa4ec25e5bfcc555ce056">rvalue_list</a> *args)
<a name="l00143"></a>00143 {
<a name="l00144"></a>00144     <a class="code" href="structlibdap_1_1Clause.html" title="Holds a fragment of a constraint expression.">Clause</a> *clause = <span class="keyword">new</span> <a class="code" href="structlibdap_1_1Clause.html" title="Holds a fragment of a constraint expression.">Clause</a>(func, args);
<a name="l00145"></a>00145 
<a name="l00146"></a>00146     expr.push_back(clause);
<a name="l00147"></a>00147 }
<a name="l00148"></a>00148 
<a name="l00156"></a>00156 <span class="keywordtype">void</span>
<a name="l00157"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#bf7511f38a4c5f8fc0cde0eca91ef338">00157</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#bf7511f38a4c5f8fc0cde0eca91ef338">ConstraintEvaluator::append_constant</a>(<a class="code" href="classlibdap_1_1BaseType.html" title="The basic data type for the DODS DAP types.">BaseType</a> *btp)
<a name="l00158"></a>00158 {
<a name="l00159"></a>00159     constants.push_back(btp);
<a name="l00160"></a>00160 }
<a name="l00161"></a>00161 
<a name="l00162"></a>00162 <span class="keyword">class </span>func_name_is
<a name="l00163"></a>00163 {
<a name="l00164"></a>00164 <span class="keyword">private</span>:
<a name="l00165"></a>00165     <span class="keyword">const</span> <span class="keywordtype">string</span> d_name;
<a name="l00166"></a>00166 
<a name="l00167"></a>00167 <span class="keyword">public</span>:
<a name="l00168"></a>00168     func_name_is(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;name): d_name(name)
<a name="l00169"></a>00169     {}
<a name="l00170"></a>00170     <span class="keywordtype">bool</span> operator()(<span class="keyword">const</span> ConstraintEvaluator::function f)
<a name="l00171"></a>00171     {
<a name="l00172"></a>00172         <span class="keywordflow">return</span> f.name == d_name;
<a name="l00173"></a>00173     }
<a name="l00174"></a>00174 };
<a name="l00175"></a>00175 
<a name="l00195"></a>00195 <span class="preprocessor">#if 1</span>
<a name="l00196"></a>00196 <span class="preprocessor"></span>
<a name="l00197"></a>00197 <span class="keywordtype">void</span>
<a name="l00198"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#c42a51af20507806f1e04e24ed9cb0ac">00198</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#c42a51af20507806f1e04e24ed9cb0ac" title="Add a boolean function to the list.">ConstraintEvaluator::add_function</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;name, bool_func f)
<a name="l00199"></a>00199 {
<a name="l00200"></a>00200     functions.remove_if(<a class="code" href="classlibdap_1_1ConstraintEvaluator.html#bdcdfafb252f26c4af32af89b0f699dc">func_name_is</a>(name));
<a name="l00201"></a>00201     function func(name, f);
<a name="l00202"></a>00202     functions.push_back(func);
<a name="l00203"></a>00203 }
<a name="l00204"></a>00204 <span class="preprocessor">#endif</span>
<a name="l00205"></a>00205 <span class="preprocessor"></span>
<a name="l00206"></a>00206 <span class="keywordtype">void</span>
<a name="l00207"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#eabb00757399afe777712b43dfdefd27">00207</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#c42a51af20507806f1e04e24ed9cb0ac" title="Add a boolean function to the list.">ConstraintEvaluator::add_function</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;name, btp_func f)
<a name="l00208"></a>00208 {
<a name="l00209"></a>00209     functions.remove_if(<a class="code" href="classlibdap_1_1ConstraintEvaluator.html#bdcdfafb252f26c4af32af89b0f699dc">func_name_is</a>(name));
<a name="l00210"></a>00210     function func(name, f);
<a name="l00211"></a>00211     functions.push_back(func);
<a name="l00212"></a>00212 }
<a name="l00213"></a>00213 
<a name="l00215"></a>00215 <span class="keywordtype">void</span>
<a name="l00216"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#029d3512841dcdb09b46024ff40e8e4e">00216</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#c42a51af20507806f1e04e24ed9cb0ac" title="Add a boolean function to the list.">ConstraintEvaluator::add_function</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;name, proj_func f)
<a name="l00217"></a>00217 {
<a name="l00218"></a>00218     functions.remove_if(<a class="code" href="classlibdap_1_1ConstraintEvaluator.html#bdcdfafb252f26c4af32af89b0f699dc">func_name_is</a>(name));
<a name="l00219"></a>00219     function func(name, f);
<a name="l00220"></a>00220     functions.push_back(func);
<a name="l00221"></a>00221 }
<a name="l00222"></a>00222 <span class="preprocessor">#if 1</span>
<a name="l00223"></a>00223 <span class="preprocessor"></span>
<a name="l00224"></a>00224 <span class="keywordtype">bool</span>
<a name="l00225"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#c8da439f904b56b42bab23e6d6483a5d">00225</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#c8da439f904b56b42bab23e6d6483a5d" title="Find a Boolean function with a given name in the function list.">ConstraintEvaluator::find_function</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;name, bool_func *f)<span class="keyword"> const</span>
<a name="l00226"></a>00226 <span class="keyword"></span>{
<a name="l00227"></a>00227     <span class="keywordflow">if</span> (functions.empty())
<a name="l00228"></a>00228         <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00229"></a>00229 
<a name="l00230"></a>00230     <span class="keywordflow">for</span> (<a class="code" href="classlibdap_1_1ConstraintEvaluator.html#fabff19845fae4d5ccfcc492b33c79c2">Functions_citer</a> i = functions.begin(); i != functions.end(); i++) {
<a name="l00231"></a>00231         <span class="keywordflow">if</span> (name == (*i).name &amp;&amp; (*f = (*i).b_func)) {
<a name="l00232"></a>00232             <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00233"></a>00233         }
<a name="l00234"></a>00234     }
<a name="l00235"></a>00235 
<a name="l00236"></a>00236     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00237"></a>00237 }
<a name="l00238"></a>00238 <span class="preprocessor">#endif</span>
<a name="l00239"></a>00239 <span class="preprocessor"></span>
<a name="l00240"></a>00240 <span class="keywordtype">bool</span>
<a name="l00241"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#065950f0bc91ea2ae3ed06f6cd23e1f9">00241</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#c8da439f904b56b42bab23e6d6483a5d" title="Find a Boolean function with a given name in the function list.">ConstraintEvaluator::find_function</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;name, btp_func *f)<span class="keyword"> const</span>
<a name="l00242"></a>00242 <span class="keyword"></span>{
<a name="l00243"></a>00243     <span class="keywordflow">if</span> (functions.empty())
<a name="l00244"></a>00244         <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00245"></a>00245 
<a name="l00246"></a>00246     <span class="keywordflow">for</span> (<a class="code" href="classlibdap_1_1ConstraintEvaluator.html#fabff19845fae4d5ccfcc492b33c79c2">Functions_citer</a> i = functions.begin(); i != functions.end(); i++) {
<a name="l00247"></a>00247         <span class="keywordflow">if</span> (name == (*i).name &amp;&amp; (*f = (*i).bt_func)) {
<a name="l00248"></a>00248             <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00249"></a>00249         }
<a name="l00250"></a>00250     }
<a name="l00251"></a>00251 
<a name="l00252"></a>00252     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00253"></a>00253 }
<a name="l00254"></a>00254 
<a name="l00256"></a>00256 <span class="keywordtype">bool</span>
<a name="l00257"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#1f59dced0a1aa7d31f5c46169188a8c3">00257</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#c8da439f904b56b42bab23e6d6483a5d" title="Find a Boolean function with a given name in the function list.">ConstraintEvaluator::find_function</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;name, proj_func *f)<span class="keyword"> const</span>
<a name="l00258"></a>00258 <span class="keyword"></span>{
<a name="l00259"></a>00259     <span class="keywordflow">if</span> (functions.empty())
<a name="l00260"></a>00260         <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00261"></a>00261 
<a name="l00262"></a>00262     <span class="keywordflow">for</span> (<a class="code" href="classlibdap_1_1ConstraintEvaluator.html#fabff19845fae4d5ccfcc492b33c79c2">Functions_citer</a> i = functions.begin(); i != functions.end(); i++)
<a name="l00263"></a>00263         <span class="keywordflow">if</span> (name == (*i).name &amp;&amp; (*f = (*i).p_func)) {
<a name="l00264"></a>00264             <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00265"></a>00265         }
<a name="l00266"></a>00266 
<a name="l00267"></a>00267     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00268"></a>00268 }
<a name="l00270"></a>00270 
<a name="l00273"></a>00273 <span class="keywordtype">bool</span>
<a name="l00274"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#dd46ce1d9ef36fa26a2913d8d7c51096">00274</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#dd46ce1d9ef36fa26a2913d8d7c51096" title="Does the current constraint expression return a BaseType pointer?">ConstraintEvaluator::functional_expression</a>()
<a name="l00275"></a>00275 {
<a name="l00276"></a>00276     <span class="keywordflow">if</span> (expr.empty())
<a name="l00277"></a>00277         <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00278"></a>00278 
<a name="l00279"></a>00279     <a class="code" href="structlibdap_1_1Clause.html" title="Holds a fragment of a constraint expression.">Clause</a> *cp = expr[0] ;
<a name="l00280"></a>00280     <span class="keywordflow">return</span> cp-&gt;<a class="code" href="structlibdap_1_1Clause.html#7bd5122be1851f0bf32ec1c58b46eaa9" title="Return true if the clause returns a value in a BaseType pointer.">value_clause</a>();
<a name="l00281"></a>00281 }
<a name="l00282"></a>00282 
<a name="l00284"></a>00284 <a class="code" href="classlibdap_1_1BaseType.html" title="The basic data type for the DODS DAP types.">BaseType</a> *
<a name="l00285"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#3d433bb6769cc95fb299249b5e5d74c4">00285</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#3d433bb6769cc95fb299249b5e5d74c4" title="Evaluate a function-valued constraint expression.">ConstraintEvaluator::eval_function</a>(<a class="code" href="classlibdap_1_1DDS.html">DDS</a> &amp;dds, <span class="keyword">const</span> <span class="keywordtype">string</span> &amp;)
<a name="l00286"></a>00286 {
<a name="l00287"></a>00287     <span class="keywordflow">if</span> (expr.size() != 1)
<a name="l00288"></a>00288         <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="l00289"></a>00289                           <span class="stringliteral">"The length of the list of CE clauses is not 1."</span>);
<a name="l00290"></a>00290 
<a name="l00291"></a>00291     <a class="code" href="structlibdap_1_1Clause.html" title="Holds a fragment of a constraint expression.">Clause</a> *cp = expr[0] ;
<a name="l00292"></a>00292     <a class="code" href="classlibdap_1_1BaseType.html" title="The basic data type for the DODS DAP types.">BaseType</a> *result;
<a name="l00293"></a>00293     <span class="keywordflow">if</span> (cp-&gt;<a class="code" href="structlibdap_1_1Clause.html#bfff44c4db49ad7462d14665b2458588" title="Evaluate a clause which returns a boolean value This method must only be evaluated...">value</a>(dds, &amp;result))
<a name="l00294"></a>00294         <span class="keywordflow">return</span> result;
<a name="l00295"></a>00295     <span class="keywordflow">else</span>
<a name="l00296"></a>00296         <span class="keywordflow">return</span> NULL;
<a name="l00297"></a>00297 }
<a name="l00298"></a>00298 
<a name="l00300"></a>00300 <span class="keywordtype">bool</span>
<a name="l00301"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#155da913af4458d96fa60ecd0ecbe377">00301</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#155da913af4458d96fa60ecd0ecbe377" title="Does the current constraint expression return a boolean value?">ConstraintEvaluator::boolean_expression</a>()
<a name="l00302"></a>00302 {
<a name="l00303"></a>00303     <span class="keywordflow">if</span> (expr.empty())
<a name="l00304"></a>00304         <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00305"></a>00305 
<a name="l00306"></a>00306     <span class="keywordtype">bool</span> <span class="keywordtype">boolean</span> = <span class="keyword">true</span>;
<a name="l00307"></a>00307     <span class="keywordflow">for</span> (<a class="code" href="classlibdap_1_1ConstraintEvaluator.html#369a03eac7969bb6955cfc90ababb8aa">Clause_iter</a> i = expr.begin(); i != expr.end(); i++) {
<a name="l00308"></a>00308         <span class="keywordtype">boolean</span> = <span class="keywordtype">boolean</span> &amp;&amp; (*i)-&gt;boolean_clause();
<a name="l00309"></a>00309     }
<a name="l00310"></a>00310 
<a name="l00311"></a>00311     <span class="keywordflow">return</span> boolean;
<a name="l00312"></a>00312 }
<a name="l00313"></a>00313 
<a name="l00314"></a>00314 
<a name="l00322"></a>00322 <span class="keywordtype">bool</span>
<a name="l00323"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a0066a57cf00c975f6ccbc2e90c64742">00323</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a0066a57cf00c975f6ccbc2e90c64742" title="Evaluate a boolean-valued constraint expression. This is main method for the evaluator...">ConstraintEvaluator::eval_selection</a>(<a class="code" href="classlibdap_1_1DDS.html">DDS</a> &amp;dds, <span class="keyword">const</span> <span class="keywordtype">string</span> &amp;)
<a name="l00324"></a>00324 {
<a name="l00325"></a>00325     <span class="keywordflow">if</span> (expr.empty()) {
<a name="l00326"></a>00326         <a class="code" href="debug_8h.html#32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cerr &lt;&lt; <span class="stringliteral">"No selection recorded"</span> &lt;&lt; endl);
<a name="l00327"></a>00327         <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00328"></a>00328     }
<a name="l00329"></a>00329 
<a name="l00330"></a>00330     <a class="code" href="debug_8h.html#32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cerr &lt;&lt; <span class="stringliteral">"Eval selection"</span> &lt;&lt; endl);
<a name="l00331"></a>00331 
<a name="l00332"></a>00332     <span class="comment">// A CE is made up of zero or more clauses, each of which has a boolean</span>
<a name="l00333"></a>00333     <span class="comment">// value. The value of the CE is the logical AND of the clause</span>
<a name="l00334"></a>00334     <span class="comment">// values. See ConstraintEvaluator::clause::value(...) for information on logical ORs in</span>
<a name="l00335"></a>00335     <span class="comment">// CEs.</span>
<a name="l00336"></a>00336     <span class="keywordtype">bool</span> result = <span class="keyword">true</span>;
<a name="l00337"></a>00337     <span class="keywordflow">for</span> (<a class="code" href="classlibdap_1_1ConstraintEvaluator.html#369a03eac7969bb6955cfc90ababb8aa">Clause_iter</a> i = expr.begin(); i != expr.end() &amp;&amp; result; i++) {
<a name="l00338"></a>00338         <span class="comment">// A selection expression *must* contain only boolean clauses!</span>
<a name="l00339"></a>00339         <span class="keywordflow">if</span> (!((*i)-&gt;boolean_clause()))
<a name="l00340"></a>00340             <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="l00341"></a>00341                               <span class="stringliteral">"A selection expression must contain only boolean clauses."</span>);
<a name="l00342"></a>00342         result = result &amp;&amp; (*i)-&gt;value(dds);
<a name="l00343"></a>00343     }
<a name="l00344"></a>00344 
<a name="l00345"></a>00345     <span class="keywordflow">return</span> result;
<a name="l00346"></a>00346 }
<a name="l00347"></a>00347 
<a name="l00358"></a>00358 <span class="keywordtype">void</span>
<a name="l00359"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#aeb4a7662178b992d9e36ff1dc0fc2bc">00359</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#aeb4a7662178b992d9e36ff1dc0fc2bc" title="Parse the constraint expression given the current DDS.">ConstraintEvaluator::parse_constraint</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &amp;constraint, <a class="code" href="classlibdap_1_1DDS.html">DDS</a> &amp;dds)
<a name="l00360"></a>00360 {
<a name="l00361"></a>00361     <span class="keywordtype">void</span> *buffer = <a class="code" href="ConstraintEvaluator_8cc.html#7a3a151376fbd8a427288eab509bfd06">ce_expr_string</a>(constraint.c_str());
<a name="l00362"></a>00362     <a class="code" href="ConstraintEvaluator_8cc.html#955ba7cba10608969e986cd241a15155">ce_expr_switch_to_buffer</a>(buffer);
<a name="l00363"></a>00363 
<a name="l00364"></a>00364     <a class="code" href="structlibdap_1_1ce__parser__arg.html">ce_parser_arg</a> arg(<span class="keyword">this</span>, &amp;dds);
<a name="l00365"></a>00365 
<a name="l00366"></a>00366     <span class="comment">// For all errors, exprparse will throw Error.</span>
<a name="l00367"></a>00367     <a class="code" href="ConstraintEvaluator_8cc.html#ba9ee772d54adb658f5dd2e1b71d3c2b">ce_exprparse</a>((<span class="keywordtype">void</span> *)&amp;arg);
<a name="l00368"></a>00368 
<a name="l00369"></a>00369     <a class="code" href="ConstraintEvaluator_8cc.html#829e836debe59adfa593dc370b8cb2d0">ce_expr_delete_buffer</a>(buffer);
<a name="l00370"></a>00370 }
<a name="l00371"></a>00371 
<a name="l00372"></a>00372 } <span class="comment">// namespace libdap</span>
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