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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.    
 */

package org.apache.tuscany.sca.gae.services;

import java.util.Collection;
import java.util.List;
import java.util.Map;

import org.oasisopen.sca.annotation.Init;
import org.oasisopen.sca.annotation.Scope;
import org.oasisopen.sca.annotation.Service;

import com.google.appengine.api.datastore.DatastoreService;
import com.google.appengine.api.datastore.DatastoreServiceFactory;
import com.google.appengine.api.datastore.Entity;
import com.google.appengine.api.datastore.EntityNotFoundException;
import com.google.appengine.api.datastore.Key;
import com.google.appengine.api.datastore.KeyRange;
import com.google.appengine.api.datastore.PreparedQuery;
import com.google.appengine.api.datastore.Query;
import com.google.appengine.api.datastore.Transaction;

/**
 * 
 */
@Service(DatastoreService.class)
@Scope("COMPOSITE")
public class DatastoreServiceImpl implements DatastoreService {
    private DatastoreService delegate;

    @Init
    public void init() {
        delegate = DatastoreServiceFactory.getDatastoreService();
    }

    public KeyRange allocateIds(Key parent, String kind, long num) {
        return delegate.allocateIds(parent, kind, num);
    }

    public KeyRange allocateIds(String kind, long num) {
        return delegate.allocateIds(kind, num);
    }

    public Transaction beginTransaction() {
        return delegate.beginTransaction();
    }

    public void delete(Iterable<Key> keys) {
        delegate.delete(keys);
    }

    public void delete(Key... keys) {
        delegate.delete(keys);
    }

    public void delete(Transaction txn, Iterable<Key> keys) {
        delegate.delete(txn, keys);
    }

    public void delete(Transaction txn, Key... keys) {
        delegate.delete(txn, keys);
    }

    public Map<Key, Entity> get(Iterable<Key> keys) {
        return delegate.get(keys);
    }

    public Entity get(Key key) throws EntityNotFoundException {
        return delegate.get(key);
    }

    public Map<Key, Entity> get(Transaction txn, Iterable<Key> keys) {
        return delegate.get(txn, keys);
    }

    public Entity get(Transaction txn, Key key) throws EntityNotFoundException {
        return delegate.get(txn, key);
    }

    public Collection<Transaction> getActiveTransactions() {
        return delegate.getActiveTransactions();
    }

    public Transaction getCurrentTransaction() {
        return delegate.getCurrentTransaction();
    }

    public Transaction getCurrentTransaction(Transaction returnedIfNoTxn) {
        return delegate.getCurrentTransaction(returnedIfNoTxn);
    }

    public PreparedQuery prepare(Query query) {
        return delegate.prepare(query);
    }

    public PreparedQuery prepare(Transaction txn, Query query) {
        return delegate.prepare(txn, query);
    }

    public Key put(Entity entity) {
        return delegate.put(entity);
    }

    public List<Key> put(Iterable<Entity> entities) {
        return delegate.put(entities);
    }

    public Key put(Transaction txn, Entity entity) {
        return delegate.put(txn, entity);
    }

    public List<Key> put(Transaction txn, Iterable<Entity> entities) {
        return delegate.put(txn, entities);
    }
}