exists #

Checks if the specified keys exist in the database.

exists(keys, [options], callback) #

Arguments	Type	Description
`keys`	array	List of keys to check for existence
`options`	JSON Object	Optional parameters
`callback`	function	Callback

Options #

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

Callback Response #

Returns an integer containing the number of existing keys amongst the provided list.

Usage #

String[] keys = {"key1", "key2", "..."};
kuzzle.memoryStorage.exists(keys, 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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