SDK
SDK Java v2.x
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lpushx #

Prepends the specified value to a list, only if the key already exists and if it holds a list.

[Redis documentation] (opens new window)


lpushx(key, value, [options], [callback]) #

Arguments Type Description
key string Key identifier
value array Value to add at the beginning of the list
options JSON Object Optional parameters
callback function Callback

Options #

Option Type Description Default
queuable boolean Make this request queuable or not true

Return Value #

Returns the MemoryStorage object to allow chaining.


Callback Response #

Returns an integer containing the updated number of items in the list.

Usage #

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kuzzle.memoryStorage.lpushx("key", "foo", new ResponseListener<Long>() {
  @Override
  public void onSuccess(int count) {
    // callback called once the action has completed
  }
  @Override
  public void onError(JSONObject error) {
  }
});

Callback response:

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