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Merge latest changes from wal2 into this branch.

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FossilOrigin-Name: 4efefb5938c1ec83ee367ae5cc4bba906729b4e8699fa81adc6ca3618c73eb03
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dan
2021-05-21 17:31:04 +00:00
parent b2dcfcad79 80189c5bfe
commit ef319309ea
238 changed files with 6929 additions and 2790 deletions
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48
ext/session/sqlite3session.h
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@@ -79,6 +79,38 @@ int sqlite3session_create(
*/
void sqlite3session_delete(sqlite3_session *pSession);
/*
** CAPIREF: Conigure a Session Object
** METHOD: sqlite3_session
**
** This method is used to configure a session object after it has been
** created. At present the only valid value for the second parameter is
** [SQLITE_SESSION_OBJCONFIG_SIZE].
**
** Arguments for sqlite3session_object_config()
**
** The following values may passed as the the 4th parameter to
** sqlite3session_object_config().
**
** <dt>SQLITE_SESSION_OBJCONFIG_SIZE <dd>
** This option is used to set, clear or query the flag that enables
** the [sqlite3session_changeset_size()] API. Because it imposes some
** computational overhead, this API is disabled by default. Argument
** pArg must point to a value of type (int). If the value is initially
** 0, then the sqlite3session_changeset_size() API is disabled. If it
** is greater than 0, then the same API is enabled. Or, if the initial
** value is less than zero, no change is made. In all cases the (int)
** variable is set to 1 if the sqlite3session_changeset_size() API is
** enabled following the current call, or 0 otherwise.
**
** It is an error (SQLITE_MISUSE) to attempt to modify this setting after
** the first table has been attached to the session object.
*/
int sqlite3session_object_config(sqlite3_session*, int op, void *pArg);
/*
*/
#define SQLITE_SESSION_OBJCONFIG_SIZE 1
/*
** CAPI3REF: Enable Or Disable A Session Object
@@ -349,6 +381,22 @@ int sqlite3session_fullchangeset(
void **ppChangeset /* OUT: Buffer containing changeset */
);
/*
** CAPI3REF: Return An Upper-limit For The Size Of The Changeset
** METHOD: sqlite3_session
**
** By default, this function always returns 0. For it to return
** a useful result, the sqlite3_session object must have been configured
** to enable this API using sqlite3session_object_config() with the
** SQLITE_SESSION_OBJCONFIG_SIZE verb.
**
** When enabled, this function returns an upper limit, in bytes, for the size
** of the changeset that might be produced if sqlite3session_changeset() were
** called. The final changeset size might be equal to or smaller than the
** size in bytes returned by this function.
*/
sqlite3_int64 sqlite3session_changeset_size(sqlite3_session *pSession);
/*
** CAPI3REF: Load The Difference Between Tables Into A Session
** METHOD: sqlite3_session