hexists #

Checks if a field exists in a hash.

[Redis documentation]

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hexists(key, field, [options], callback) #

Arguments	Type	Description
key	string	Key identifier
field	string	Field name
options	JSON Object	Optional parameters
callback	function	Callback

---

Options #

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

---

Callback Response #

A boolean value specifying if the field exists or not.

Usage #

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kuzzle.memoryStorage.hexists("key", "field1", new ResponseListener<Boolean>() {
  @Override
  public void onSuccess(Boolean exists) {
    // callback called once the action has completed
  }
  @Override
  public void onError(JSONObject error) {
  }
});

Callback response:

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true