database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-07-30 19:03:16 +03:00
Code Activity

Add the sqlite3changeset_apply() function. Does not yet handle all cases.

Browse Source 
FossilOrigin-Name: 2b19be7bf753c7dd12e1c3b384981a3ea1bc8145
This commit is contained in:
dan
2011-03-11 19:05:52 +00:00
parent 91ddd5595b
commit d5f0767c9c
6 changed files with 924 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
ext/session/sqlite3session.h
View File

@ -112,6 +112,21 @@ int sqlite3changeset_new(
int iVal,
sqlite3_value **ppValue /* OUT: New value (or NULL pointer) */
);
/*
** This function is only usable with sqlite3_changeset_iter objects passed
** to the xConflict callback by sqlite3changeset_apply(). It cannot be used
** with iterators created using sqlite3changeset_start().
**
** It is used to access the "conflicting row" information available to the
** conflict handler if the second argument is either SQLITE_CHANGESET_DATA
** or SQLITE_CHANGESET_CONFLICT.
*/
int sqlite3changeset_conflict(
sqlite3_changeset_iter *pIter,
int iVal,
sqlite3_value **ppValue /* OUT: Value from conflicting row */
);
/*
** Finalize an iterator allocated with sqlite3changeset_start().
@ -129,6 +144,36 @@ int sqlite3changeset_invert(
int *pnOut, void **ppOut /* OUT: Inverse of input */
);
/*
** Apply a changeset to a database.
**
** It is safe to execute SQL statements, including those that write to the
** table that the callback related to, from within the xConflict callback.
** This can be used to further customize the applications conflict
** resolution strategy.
*/
int sqlite3changeset_apply(
sqlite3 *db,
int nChangeset,
void *pChangeset,
int(*xConflict)(
void *pCtx, /* Copy of fifth arg to _apply() */
int eConflict, /* DATA, MISSING, CONFLICT, CONSTRAINT */
sqlite3_changeset_iter *p /* Handle describing change and conflict */
),
void *pCtx
);
/* Values passed as the second argument to a conflict-handler */
#define SQLITE_CHANGESET_DATA 1
#define SQLITE_CHANGESET_NOTFOUND 2
#define SQLITE_CHANGESET_CONFLICT 3
#define SQLITE_CHANGESET_CONSTRAINT 4
/* Valid return values from a conflict-handler */
#define SQLITE_CHANGESET_OMIT 0
#define SQLITE_CHANGESET_REPLACE 1
#define SQLITE_CHANGESET_ABORT 2
#endif