Concatenate Two Changeset Objects

Session Module C Interface#

Concatenate Two Changeset Objects#

int sqlite3changeset_concat(\   int nA,                         /* Number of bytes in buffer pA */\   void *pA,                       /* Pointer to buffer containing changeset A */\   int nB,                         /* Number of bytes in buffer pB */\   void *pB,                       /* Pointer to buffer containing changeset B */\   int *pnOut,                     /* OUT: Number of bytes in output changeset */\   void **ppOut                    /* OUT: Buffer containing output changeset */\ );\

This function is used to concatenate two changesets, A and B, into a single changeset. The result is a changeset equivalent to applying changeset A followed by changeset B.

This function combines the two input changesets using an sqlite3_changegroup object. Calling it produces similar results as the following code fragment:

\   sqlite3_changegroup *pGrp;\   rc = sqlite3_changegroup_new(&pGrp);\   if( rc==SQLITE_OK ) rc = sqlite3changegroup_add(pGrp, nA, pA);\   if( rc==SQLITE_OK ) rc = sqlite3changegroup_add(pGrp, nB, pB);\   if( rc==SQLITE_OK ){\     rc = sqlite3changegroup_output(pGrp, pnOut, ppOut);\   }else{\     *ppOut = 0;\     *pnOut = 0;\   }\

Refer to the sqlite3_changegroup documentation below for details.

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