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Those + ** below are for version 2 and greater. */ + int (*xSavepoint)(sqlite3_vtab *pVTab, int); + int (*xRelease)(sqlite3_vtab *pVTab, int); + int (*xRollbackTo)(sqlite3_vtab *pVTab, int); + /* The methods above are in versions 1 and 2 of the sqlite_module object. + ** Those below are for version 3 and greater. */ + int (*xShadowName)(const char*); + /* The methods above are in versions 1 through 3 of the sqlite_module object. + ** Those below are for version 4 and greater. */ + int (*xIntegrity)(sqlite3_vtab *pVTab, const char *zSchema, + const char *zTabName, int mFlags, char **pzErr); +}; +</pre></blockquote> +<p> +This structure, sometimes called a "virtual table module", +defines the implementation of a <a href="../vtab.html">virtual table</a>. +This structure consists mostly of methods for the module.</p> + +<p>A virtual table module is created by filling in a persistent +instance of this structure and passing a pointer to that instance +to <a href="../c3ref/create_module.html">sqlite3_create_module()</a> or <a href="../c3ref/create_module.html">sqlite3_create_module_v2()</a>. +The registration remains valid until it is replaced by a different +module or until the <a href="../c3ref/sqlite3.html">database connection</a> closes. The content +of this structure must not change while it is registered with +any database connection. +</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> + |