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48  <section id="fts-parser-dialog">
49<span id="id1"></span><h1><span class="target" id="index-0"></span>FTS Parser Dialog<a class="headerlink" href="#fts-parser-dialog" title="Link to this heading">¶</a></h1>
50<p>Use the <em>FTS Parser</em> dialog to create a new text search parser. A text search
51parser defines a method for splitting a text string into tokens and assigning
52types (categories) to the tokens.</p>
53<p>The <em>FTS Parser</em> dialog organizes the development of a text search parser
54through the following dialog tabs: <em>General</em>, and <em>Definition</em>. The <em>SQL</em> tab
55displays the SQL code generated by dialog selections.</p>
56<img alt="FTS parser dialog general tab" class="align-center" src="_images/fts_parser_general.png" />
57<p>Use the fields in the <em>General</em> tab to identify a text search parser:</p>
58<ul class="simple">
59<li><p>Use the <em>Name</em> field to add a descriptive name for the parser. The name will
60be displayed in the <em>pgAdmin</em> tree control.</p></li>
61<li><p>Select the name of the schema in which the parser will reside from the
62drop-down listbox in the <em>Schema</em> field.</p></li>
63<li><p>Store notes about the domain in the <em>Comment</em> field.</p></li>
64</ul>
65<p>Click the <em>Definition</em> tab to continue.</p>
66<img alt="FTS parser dialog definition tab" class="align-center" src="_images/fts_parser_definition.png" />
67<p>Use the fields in the <em>Definition</em> tab to define parameters:</p>
68<ul class="simple">
69<li><p>Use the drop-down listbox next to <em>Start function</em> to select the name of the
70function that will initialize the parser.</p></li>
71<li><p>Use the drop-down listbox next to <em>Get next token function</em> to select the
72name of the function that will return the next token.</p></li>
73<li><p>Use the drop-down listbox next to <em>End function</em> to select the name of the
74function that is called when the parser is finished.</p></li>
75<li><p>Use the drop-down listbox next to <em>Lextypes function</em> to select the name of
76the lextypes function for the parser. The lextypes function returns an array
77that contains the id, alias, and a description of the tokens used by the
78parser.</p></li>
79<li><p>Use the drop-down listbox next to <em>Headline function</em> to select the name of
80the headline function for the parser. The headline function returns an excerpt
81from the document in which the terms of the query are highlighted.</p></li>
82</ul>
83<p>Click the <em>SQL</em> tab to continue.</p>
84<img alt="FTS parser dialog sql tab" class="align-center" src="_images/fts_parser_sql.png" />
85<p>Your entries in the <em>FTS Parser</em> dialog generate a generate a SQL command. Use
86the <em>SQL</em> tab for review; revisit or switch tabs to make any changes to the SQL
87command.</p>
88<ul class="simple">
89<li><p>Click the <em>Info</em> button (i) to access online help.</p></li>
90<li><p>Click the <em>Save</em> button to save work.</p></li>
91<li><p>Click the <em>Close</em> button to exit without saving work.</p></li>
92<li><p>Click the <em>Reset</em> button to restore configuration parameters.</p></li>
93</ul>
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