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Modules: Hash type API WIP #2.

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This commit is contained in:
antirez
2016-04-25 17:09:26 +02:00
parent 10993ca0d5
commit 9b0556cf10
3 changed files with 60 additions and 4 deletions
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51
src/module.c
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@ -1612,8 +1612,58 @@ int RM_HashSet(RedisModuleKey *key, int flags, ...) {
*
* The function returns REDISMODULE_OK on success and REDISMODULE_ERR if
* the key is not an hash value.
*
* Memory management:
*
* The returned RedisModuleString objects should be released with
* RedisModule_FreeString(), or by enabling automatic memory management.
*/
int RM_HashGet(RedisModuleKey *key, int flags, ...) {
va_list ap;
if (key->value && key->value->type != OBJ_HASH) return REDISMODULE_ERR;
va_start(ap, flags);
while(1) {
RedisModuleString *field, **valueptr;
int *existsptr;
/* Get the field object and the value pointer to pointer. */
if (flags & REDISMODULE_HGET_CFIELDS) {
char *cfield = va_arg(ap,char*);
if (cfield == NULL) break;
field = createRawStringObject(cfield,strlen(cfield));
} else {
field = va_arg(ap,RedisModuleString*);
if (field == NULL) break;
}
/* Query the hash for existence or value object. */
if (flags & REDISMODULE_HGET_EXISTS) {
existsptr = va_arg(ap,int*);
if (key->value)
*existsptr = hashTypeExists(key->value,field->ptr);
else
*existsptr = 0;
} else {
valueptr = va_arg(ap,RedisModuleString**);
if (key->value) {
*valueptr = hashTypeGetValueObject(key->value,field->ptr);
if (*valueptr) {
robj *decoded = getDecodedObject(*valueptr);
decrRefCount(*valueptr);
*valueptr = decoded;
}
if (*valueptr)
autoMemoryAdd(key->ctx,REDISMODULE_AM_STRING,*valueptr);
} else {
*valueptr = NULL;
}
}
/* Cleanup */
if (flags & REDISMODULE_HSET_CFIELDS) decrRefCount(field);
}
va_end(ap);
return REDISMODULE_ERR;
}
/* --------------------------------------------------------------------------
@ -2078,6 +2128,7 @@ void moduleRegisterCoreAPI(void) {
REGISTER_API(ZsetRangePrev);
REGISTER_API(ZsetRangeEndReached);
REGISTER_API(HashSet);
REGISTER_API(HashGet);
}
/* Global initialization at Redis startup. */