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Modules: ZSET API WIP #4.

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This commit is contained in:
antirez 2016-04-15 15:35:11 +02:00
parent e1b34ecf98
commit d5ecedd185
2 changed files with 33 additions and 1 deletions
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30
src/module.c
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@ -927,6 +927,35 @@ int RM_ZsetIncrby(RedisModuleKey *key, double score, RedisModuleString *ele, int
return REDISMODULE_OK;
}
/* Remove the specified element from the sorted set.
* The function returns REDISMODULE_OK on success, and REDISMODULE_ERR
* on one of the following conditions:
*
* - The key was not opened for writing.
* - The key is of the wrong type.
*
* The return value does NOT indicate the fact the element was really
* removed (since it existed) or not, just if the function was executed
* with success.
*
* In order to know if the element was removed, the additional argument
* 'deleted' must be passed, that populates the integer by reference
* setting it to 1 or 0 depending on the outcome of the operation.
* The 'deleted' argument can be NULL if the caller is not interested
* to know if the element was really removed.
*
* Empty keys will be handled correctly by doing nothing. */
int RM_ZsetRem(RedisModuleKey *key, RedisModuleString *ele, int *deleted) {
if (!(key->mode & REDISMODULE_WRITE)) return REDISMODULE_ERR;
if (key->value->type != OBJ_ZSET) return REDISMODULE_ERR;
if (key->value != NULL && zsetDel(key->value,ele->ptr)) {
if (deleted) *deleted = 1;
} else {
if (deleted) *deleted = 0;
}
return REDISMODULE_OK;
}
/* On success retrieve the double score associated at the sorted set element
* 'ele' and returns REDISMODULE_OK. Otherwise REDISMODULE_ERR is returned
* to signal one of the following conditions:
@ -1390,6 +1419,7 @@ void moduleRegisterCoreAPI(void) {
REGISTER_API(ZsetAdd);
REGISTER_API(ZsetIncrby);
REGISTER_API(ZsetScore);
REGISTER_API(ZsetRem);
}
/* Global initialization at Redis startup. */

4
src/redismodule.h
View File

@ -113,7 +113,8 @@ mstime_t REDISMODULE_API_FUNC(RedisModule_GetExpire)(RedisModuleKey *key);
int REDISMODULE_API_FUNC(RedisModule_SetExpire)(RedisModuleKey *key, mstime_t expire);
int REDISMODULE_API_FUNC(RedisModule_ZsetAdd)(RedisModuleKey *key, double score, RedisModuleString *ele, int *flagsptr);
int REDISMODULE_API_FUNC(RedisModule_ZsetIncrby)(RedisModuleKey *key, double score, RedisModuleString *ele, int *flagsptr, double *newscore);
int REDISMODULE_API_FUNC(RM_ZsetScore)(RedisModuleKey *key, RedisModuleString *ele, double *score);
int REDISMODULE_API_FUNC(RedisModule_ZsetScore)(RedisModuleKey *key, RedisModuleString *ele, double *score);
int REDISMODULE_API_FUNC(RedisModule_ZsetRem)(RedisModuleKey *key, RedisModuleString *ele, int *deleted);
/* This is included inline inside each Redis module. */
static int RedisModule_Init(RedisModuleCtx *ctx, const char *name, int ver, int apiver) {
@ -164,6 +165,7 @@ static int RedisModule_Init(RedisModuleCtx *ctx, const char *name, int ver, int
REDISMODULE_GET_API(ZsetAdd);
REDISMODULE_GET_API(ZsetIncrby);
REDISMODULE_GET_API(ZsetScore);
REDISMODULE_GET_API(ZsetRem);
RedisModule_SetModuleAttribs(ctx,name,ver,apiver);
return REDISMODULE_OK;