Java tutorial
/* * Copyright 2015 mtap technologies * * Licensed 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 in.mtap.iincube.mongoapi; import com.mongodb.DBCollection; import com.mongodb.DBObject; import com.mongodb.WriteConcern; import com.mongodb.WriteResult; import static in.mtap.iincube.mongoapi.internal.Utility.assertNotNull; public class MongoUpdater { private final MongoObjectFactory<DBCollection> collectionFactory; private DBObject findObject; private DBObject updateObject; private boolean multi; private boolean upsert; MongoUpdater(MongoObjectFactory<DBCollection> collectionFactory) { this.collectionFactory = collectionFactory; } public MongoUpdater find(DBObject findObject) { this.findObject = findObject; return this; } public MongoUpdater update(DBObject updateObject) { this.updateObject = updateObject; return this; } public MongoUpdater multi(boolean multi) { this.multi = multi; return this; } public MongoUpdater upsert(boolean upsert) { this.upsert = upsert; return this; } /** Uses {@link WriteConcern#JOURNALED} */ public WriteResult execute() { return execute(WriteConcern.JOURNALED); } private void assertArguments() { assertNotNull(findObject, "findObject == null"); assertNotNull(updateObject, "updateObject == null"); } public WriteResult execute(WriteConcern writeConcern) { assertArguments(); DBCollection collection = collectionFactory.get(); return collection.update(findObject, updateObject, upsert, multi, writeConcern); } }