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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-13 14:07:11 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-13 14:07:11 +0000
commit63847496f14c813a5d80efd5b7de0f1294ffe1e3 (patch)
tree01c7571c7c762ceee70638549a99834fdd7c411b /www/c3ref/vtab_cursor.html
parentInitial commit. (diff)
downloadsqlite3-63847496f14c813a5d80efd5b7de0f1294ffe1e3.tar.xz
sqlite3-63847496f14c813a5d80efd5b7de0f1294ffe1e3.zip
Adding upstream version 3.45.1.upstream/3.45.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+<title>Virtual Table Cursor Object</title>
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+<body>
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+<!-- keywords: sqlite3_vtab_cursor {virtual table cursor} -->
+<div class=nosearch>
+<a href="../c3ref/intro.html"><h2>SQLite C Interface</h2></a>
+<h2>Virtual Table Cursor Object</h2>
+</div>
+<blockquote><pre>
+struct sqlite3_vtab_cursor {
+ sqlite3_vtab *pVtab; /* Virtual table of this cursor */
+ /* Virtual table implementations will typically add additional fields */
+};
+</pre></blockquote>
+<p>
+Every <a href="../c3ref/module.html">virtual table module</a> implementation uses a subclass of the
+following structure to describe cursors that point into the
+<a href="../vtab.html">virtual table</a> and are used
+to loop through the virtual table. Cursors are created using the
+<a href="../vtab.html#xopen">xOpen</a> method of the module and are destroyed
+by the <a href="../vtab.html#xclose">xClose</a> method. Cursors are used
+by the <a href="../vtab.html#xfilter">xFilter</a>, <a href="../vtab.html#xnext">xNext</a>, <a href="../vtab.html#xeof">xEof</a>, <a href="../vtab.html#xcolumn">xColumn</a>, and <a href="../vtab.html#xrowid">xRowid</a> methods
+of the module. Each module implementation will define
+the content of a cursor structure to suit its own needs.</p>
+
+<p>This superclass exists in order to define fields of the cursor that
+are common to all implementations.
+</p><p>See also lists of
+ <a href="../c3ref/objlist.html">Objects</a>,
+ <a href="../c3ref/constlist.html">Constants</a>, and
+ <a href="../c3ref/funclist.html">Functions</a>.</p>
+