129 lines
4.4 KiB
HTML
129 lines
4.4 KiB
HTML
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<a href="intro.html"><h2>Session Module C Interface</h2></a><h2>Concatenate Two Changeset Objects</h2><blockquote><pre>int sqlite3changeset_concat(
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int nA, /* Number of bytes in buffer pA */
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void *pA, /* Pointer to buffer containing changeset A */
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int nB, /* Number of bytes in buffer pB */
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void *pB, /* Pointer to buffer containing changeset B */
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int *pnOut, /* OUT: Number of bytes in output changeset */
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void **ppOut /* OUT: Buffer containing output changeset */
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);
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</pre></blockquote><p>
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This function is used to concatenate two changesets, A and B, into a
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single changeset. The result is a changeset equivalent to applying
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changeset A followed by changeset B. </p>
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<p>This function combines the two input changesets using an
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sqlite3_changegroup object. Calling it produces similar results as the
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following code fragment:</p>
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<p><pre>
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sqlite3_changegroup *pGrp;
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rc = sqlite3_changegroup_new(&pGrp);
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if( rc==SQLITE_OK ) rc = sqlite3changegroup_add(pGrp, nA, pA);
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if( rc==SQLITE_OK ) rc = sqlite3changegroup_add(pGrp, nB, pB);
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if( rc==SQLITE_OK ){
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rc = sqlite3changegroup_output(pGrp, pnOut, ppOut);
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}else{
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*ppOut = 0;
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*pnOut = 0;
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}
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</pre></p>
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<p>Refer to the sqlite3_changegroup documentation below for details.
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</p><p>See also lists of
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<a href="objlist.html">Objects</a>,
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<a href="constlist.html">Constants</a>, and
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<a href="funclist.html">Functions</a>.</p>
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