Examples of org.apache.gora.store.DataStore

org.apache.gora.store.DataStore
DataStore handles actual object persistence. Objects can be persisted, fetched, queried or deleted by the DataStore methods. DataStores can be constructed by an instance of {@link DataStoreFactory}.
DataStores implementations should be thread safe.
Note: Results of updates ( {@link #put(Object,Persistent)}, {@link #delete(Object)} and {@link #deleteByQuery(Query)} operations) areguaranteed to be visible to subsequent get / execute operations ONLY after a subsequent call to {@link #flush()}. Additionally, exception handling is largely DataStore specific and is not largely dealt with from within this interface. @param < K> the class of keys in the datastore @param < T> the class of persistent objects in the datastore

   * Gets the data store object initialized.
   * @param conf Configuration
   * @return DataStore created
   */
  public DataStore createDataStore(Configuration conf) {
    DataStore dsCreated = null;
    try {
      dsCreated = GoraUtils.createSpecificDataStore(conf, getDatastoreClass(),
          getKeyClass(), getPersistentClass());
    } catch (GoraException e) {
      getLogger().error("Error creating data store.");

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   * Gets the data store object initialized.
   * @param conf Configuration.
   * @return DataStore created
   */
  public DataStore createDataStore(Configuration conf) {
    DataStore dsCreated = null;
    try {
      dsCreated = GoraUtils.createSpecificDataStore(conf, getDatastoreClass(),
          getKeyClass(), getPersistentClass());
    } catch (GoraException e) {
      getLogger().error("Error creating data store.");

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   * Gets the data store object initialized.
   * @param conf Configuration
   * @return DataStore created
   */
  public DataStore createDataStore(Configuration conf) {
    DataStore dsCreated = null;
    try {
      dsCreated = GoraUtils.createSpecificDataStore(conf, getDatastoreClass(),
          getKeyClass(), getPersistentClass());
    } catch (GoraException e) {
      LOG.error("Error creating data store.");

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   * Gets the data store object initialized.
   * @param conf Configuration
   * @return DataStore created
   */
  public DataStore createDataStore(Configuration conf) {
    DataStore dsCreated = null;
    try {
      dsCreated = GoraUtils.createSpecificDataStore(conf, getDatastoreClass(),
          getKeyClass(), getPersistentClass());
    } catch (GoraException e) {
      LOG.error("Error creating data store.");

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