Java tutorial
/** * Copyright 2013 the project contributors * * 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 jc.mongodb; import java.util.Map.Entry; import com.mongodb.DBCollection; import com.mongodb.DBObject; public class MongoMapEntryDBObjectSerializer<K, V> implements DBObjectSerializer<Entry<K, V>> { DBCollection collection; DBObjectSerializer<K> keySerializer; DBObjectSerializer<V> valueSerializer; public MongoMapEntryDBObjectSerializer(DBCollection collection, DBObjectSerializer<K> keySerializer, DBObjectSerializer<V> valueSerializer) { this.collection = collection; this.keySerializer = keySerializer; this.valueSerializer = valueSerializer; } @Override public DBObject toDBObject(Entry<K, V> element, boolean equalFunctions, boolean negate) { DBObject obj = keySerializer.toDBObject(element.getKey(), equalFunctions, negate); obj.putAll(valueSerializer.toDBObject(element.getValue(), equalFunctions, negate)); return obj; } @Override public MongoMapEntry<K, V> toElement(DBObject dbObject) { return new MongoMapEntry<K, V>(keySerializer.toElement(dbObject), collection, dbObject, valueSerializer); } }