[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[],[],null,["# Class AbstractDataStore<V> (2.0.0)\n\nVersion latestkeyboard_arrow_down\n\n- [2.0.0 (latest)](/java/docs/reference/google-http-client/latest/com.google.api.client.util.store.AbstractDataStore)\n- [1.47.1](/java/docs/reference/google-http-client/1.47.1/com.google.api.client.util.store.AbstractDataStore)\n- [1.46.3](/java/docs/reference/google-http-client/1.46.3/com.google.api.client.util.store.AbstractDataStore)\n- [1.45.3](/java/docs/reference/google-http-client/1.45.3/com.google.api.client.util.store.AbstractDataStore)\n- [1.44.2](/java/docs/reference/google-http-client/1.44.2/com.google.api.client.util.store.AbstractDataStore)\n- [1.43.2](/java/docs/reference/google-http-client/1.43.2/com.google.api.client.util.store.AbstractDataStore)\n- [1.42.3](/java/docs/reference/google-http-client/1.42.3/com.google.api.client.util.store.AbstractDataStore)\n- [1.41.8](/java/docs/reference/google-http-client/1.41.8/com.google.api.client.util.store.AbstractDataStore) \n\n public abstract class AbstractDataStore\u003cV\u003e implements DataStore\u003cV\u003e\n\nAbstract data store implementation. \n\nInheritance\n-----------\n\n[java.lang.Object](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html) \\\u003e AbstractDataStore\\\u003cV\\\u003e \n\nImplements\n----------\n\ncom.google.api.client.util.store.DataStore\\\u003cV\\\u003e \n\nInherited Members\n-----------------\n\n[Object.clone()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#clone--) \n[Object.equals(Object)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-) \n[Object.finalize()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#finalize--) \n[Object.getClass()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#getClass--) \n[Object.hashCode()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--) \n[Object.notify()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notify--) \n[Object.notifyAll()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notifyAll--) \n[Object.toString()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#toString--) \n[Object.wait()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--) \n[Object.wait(long)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-) \n[Object.wait(long,int)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-)\n\nConstructors\n------------\n\n### AbstractDataStore(DataStoreFactory dataStoreFactory, String id)\n\n protected AbstractDataStore(DataStoreFactory dataStoreFactory, String id)\n\nMethods\n-------\n\n### containsKey(String key)\n\n public boolean containsKey(String key)\n\nReturns whether the store contains the given key.\n\nDefault implementation is to call #get(String) and check if it is `null`.\n\n### containsValue(V value)\n\n public boolean containsValue(V value)\n\nReturns whether the store contains the given value.\n\nDefault implementation is to call Collection#contains(Object) on #values().\n\n### getDataStoreFactory()\n\n public DataStoreFactory getDataStoreFactory()\n\nReturns the data store factory.\n\nOverriding is only supported for the purpose of calling the super implementation and\nchanging the return type, but nothing else.\n\n### getId()\n\n public final String getId()\n\nReturns the data store ID.\n\n### isEmpty()\n\n public boolean isEmpty()\n\nReturns whether there are any stored keys.\n\nDefault implementation is to check if [#size()](/java/docs/reference/google-http-client/latest/com.google.api.client.util.store.AbstractDataStore#com_google_api_client_util_store_AbstractDataStore_size__) is `0`.\n\n### size()\n\n public int size()\n\nReturns the number of stored keys.\n\nDefault implementation is to call Set#size() on #keySet()."]]
