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Overview
| Comment: | Add the new "nochange" APIs to the extension loading mechanism. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
cd7c42699e73b688dbed29ed5d243d06 |
| User & Date: | drh 2018-01-13 01:53:09 |
Context
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2018-01-13
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| 02:07 | Updates and minor typo fix for the README. check-in: bb196fcb user: mistachkin tags: trunk | |
| 01:53 | Add the new "nochange" APIs to the extension loading mechanism. check-in: cd7c4269 user: drh tags: trunk | |
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2018-01-12
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| 23:38 | Add the sqlite3_value_nochange() API, usable from within the xUpdate method of a virtual table to discover whether or not a column was unchanged at the SQL level. check-in: dec3ea4e user: drh tags: trunk | |
Changes
Changes to src/loadext.c.
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/* Version 3.18.0 and later */ sqlite3_set_last_insert_rowid, /* Version 3.20.0 and later */ sqlite3_prepare_v3, sqlite3_prepare16_v3, sqlite3_bind_pointer, sqlite3_result_pointer, sqlite3_value_pointer }; /* ** Attempt to load an SQLite extension library contained in the file ** zFile. The entry point is zProc. zProc may be 0 in which case a ** default entry point name (sqlite3_extension_init) is used. Use ** of the default name is recommended. |
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/* Version 3.18.0 and later */ sqlite3_set_last_insert_rowid, /* Version 3.20.0 and later */ sqlite3_prepare_v3, sqlite3_prepare16_v3, sqlite3_bind_pointer, sqlite3_result_pointer, sqlite3_value_pointer, /* Version 3.22.0 and later */ sqlite3_vtab_nochange, sqlite3_value_nochange }; /* ** Attempt to load an SQLite extension library contained in the file ** zFile. The entry point is zProc. zProc may be 0 in which case a ** default entry point name (sqlite3_extension_init) is used. Use ** of the default name is recommended. |
Changes to src/sqlite3ext.h.
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int (*prepare_v3)(sqlite3*,const char*,int,unsigned int,
sqlite3_stmt**,const char**);
int (*prepare16_v3)(sqlite3*,const void*,int,unsigned int,
sqlite3_stmt**,const void**);
int (*bind_pointer)(sqlite3_stmt*,int,void*,const char*,void(*)(void*));
void (*result_pointer)(sqlite3_context*,void*,const char*,void(*)(void*));
void *(*value_pointer)(sqlite3_value*,const char*);
};
/*
** This is the function signature used for all extension entry points. It
** is also defined in the file "loadext.c".
*/
typedef int (*sqlite3_loadext_entry)(
................................................................................
#define sqlite3_set_last_insert_rowid sqlite3_api->set_last_insert_rowid
/* Version 3.20.0 and later */
#define sqlite3_prepare_v3 sqlite3_api->prepare_v3
#define sqlite3_prepare16_v3 sqlite3_api->prepare16_v3
#define sqlite3_bind_pointer sqlite3_api->bind_pointer
#define sqlite3_result_pointer sqlite3_api->result_pointer
#define sqlite3_value_pointer sqlite3_api->value_pointer
#endif /* !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) */
#if !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION)
/* This case when the file really is being compiled as a loadable
** extension */
# define SQLITE_EXTENSION_INIT1 const sqlite3_api_routines *sqlite3_api=0;
# define SQLITE_EXTENSION_INIT2(v) sqlite3_api=v;
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int (*prepare_v3)(sqlite3*,const char*,int,unsigned int,
sqlite3_stmt**,const char**);
int (*prepare16_v3)(sqlite3*,const void*,int,unsigned int,
sqlite3_stmt**,const void**);
int (*bind_pointer)(sqlite3_stmt*,int,void*,const char*,void(*)(void*));
void (*result_pointer)(sqlite3_context*,void*,const char*,void(*)(void*));
void *(*value_pointer)(sqlite3_value*,const char*);
int (*vtab_nochange)(sqlite3_context*);
int (*value_nochange)(sqlite3_value*);
};
/*
** This is the function signature used for all extension entry points. It
** is also defined in the file "loadext.c".
*/
typedef int (*sqlite3_loadext_entry)(
................................................................................
#define sqlite3_set_last_insert_rowid sqlite3_api->set_last_insert_rowid
/* Version 3.20.0 and later */
#define sqlite3_prepare_v3 sqlite3_api->prepare_v3
#define sqlite3_prepare16_v3 sqlite3_api->prepare16_v3
#define sqlite3_bind_pointer sqlite3_api->bind_pointer
#define sqlite3_result_pointer sqlite3_api->result_pointer
#define sqlite3_value_pointer sqlite3_api->value_pointer
/* Version 3.22.0 and later */
#define sqlite3_vtab_nochange sqlite3_api->vtab_nochange
#define sqlite3_value_nochange sqltie3_api->value_nochange
#endif /* !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) */
#if !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION)
/* This case when the file really is being compiled as a loadable
** extension */
# define SQLITE_EXTENSION_INIT1 const sqlite3_api_routines *sqlite3_api=0;
# define SQLITE_EXTENSION_INIT2(v) sqlite3_api=v;
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