Java tutorial
/* * Copyright 2011 VZ Netzwerke Ltd * Copyright 2014 devbliss GmbH * * 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 org.mongojack.internal; import java.io.IOException; import org.mongojack.internal.object.BsonObjectGenerator; import org.mongojack.internal.stream.DBEncoderBsonGenerator; import com.fasterxml.jackson.core.JsonGenerator; import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.JsonSerializer; import com.fasterxml.jackson.databind.SerializerProvider; /** * Serializer that detects whether we are using a BSON serializer or Object * serializer */ public abstract class MongoSerializer<T> extends JsonSerializer<T> { @Override public final void serialize(T value, JsonGenerator jgen, SerializerProvider provider) throws IOException, JsonProcessingException { if (jgen instanceof DBEncoderBsonGenerator) { serialize(value, (DBEncoderBsonGenerator) jgen, provider); } else if (jgen instanceof BsonObjectGenerator) { serialize(value, (BsonObjectGenerator) jgen, provider); } else { throw new IllegalArgumentException("Mongo serializer may only be used for generating BSON"); } } protected abstract void serialize(T value, DBEncoderBsonGenerator bgen, SerializerProvider provider) throws IOException, JsonProcessingException; protected abstract void serialize(T value, BsonObjectGenerator bgen, SerializerProvider provider) throws IOException, JsonProcessingException; }