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<h1>SWISH-BUGS - List of bugs known in Swish-e</h1>
Swish-e version 2.4.7
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<h2>Table of Contents</h2>
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<li>
<a href="#description">DESCRIPTION</a>
</li>
<li>
<a href="#bugs_in_swish_e_version_2_4">Bugs in Swish-e version 2.4</a>
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<a href="#document_info">Document Info</a>
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<h1><a name="description"></a>DESCRIPTION</h1>
<p>This file contains a list of bugs reported or known in Swish-e. If
you find a bug listed here you do not need to report it as a bug. But feel
free to bug the developers about it on the Swish-e discussion list.</p>
<p>Note that this list is imcomplete and may not be up to date.</p>
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<h1><a name="bugs_in_swish_e_version_2_4"></a>Bugs in Swish-e version 2.4</h1>
<ul>
<li><a name="item_stopwords"></a><a name="stopwords"></a><b>Stopwords not removed from query with Soundex</b>
<p>In dev version 2.5.2 noticed that stopwords are not removed from the query
when using Soundex. The plan is to rewrite the parser soon... (July 2004)</p>
</li>
<li><a name="item_wild"></a><a name="wild"></a><b>Wild card searching can be very slow</b>
<p>Wild card searching needs to be optimized.</p>
<p>Here's a three letter search:</p>
<pre class="pre-section"> $ swish-e -w 'tra*' -m1
# Number of hits: 99952
# Search time: 5.424 seconds</pre>
<p>Two letters:</p>
<pre class="pre-section"> $ swish-e -w 'tr*' -m1
# Number of hits: 100000
# Search time: 10.563 seconds</pre>
<p>Single letter search:</p>
<pre class="pre-section"> $ swish-e -w 't*' -m1
# Number of hits: 100000
# Search time: 510.939 seconds</pre>
<p>and used about 280MB or RAM.</p>
<p>This is a potential for a DoS attack. If you have a large index you may wish to filter
out single character wild cards.</p>
</li>
<li><a name="item_character"></a><a name="character"></a><b>Character Encodings</b>
<p>The XML parser (Expat) returns UTF-8 data to swish-e. Therefore, the XML
parser should only be used for parsing US-ASCII encoded text.</p>
<p>The XML2 & HTML2 parsers (Libxml2) converts characters from UTF-8 to 8859-1 encodings before indexing
and writing properties. Indexing non-8859-1 data may result in invalid character mappings.</p>
<p>These issues will be resolved soon.</p>
</li>
<li>
<p>Phrase search failes with DoubleMetaphone</p>
<p>DoubleMetaphone searching can produce two search words for a single query
word. The words are expanded to (word1 OR word2), but that fails in a
phrase query: "some phrase (word1 or word2) here"</p>
<p>swish-e query parser is due for a rewrite, and this could be resolved then.</p>
<pre class="pre-section"> Reported: August 20, 2002 - moseley</pre>
</li>
<li>
<p>Merging</p>
<p>merge.c does not check for matching stopwords or buzzwords in each index.</p>
<p>History:</p>
<pre class="pre-section"> Reported: September 3, 2002 - moseley</pre>
</li>
<li>
<p>ResultSortOrder</p>
<p>ResultSort order is not used (and is not documented). The problem is that
the data passed to Compare_Properties() does not have access to the
ResultSortOrder table.</p>
</li>
</ul>
<p>History:</p>
<pre class="pre-section"> Reported: September 3, 2002 - moseley</pre>
</div>
<div class="sub-section">
<h1><a name="document_info"></a>Document Info</h1>
<p>$Id: SWISH-BUGS.pod 1613 2005-02-02 22:53:39Z whmoseley $</p>
<p>.</p>
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<strong>URI »</strong> http://swish-e.org/
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<strong>Generated »</strong>Sun, 05 Apr 2009 02:02:28 UTC</p>
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