| /* |
| * 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.ode.jacob.soup.jackson; |
| |
| import java.io.IOException; |
| |
| import org.apache.ode.jacob.oo.Channel; |
| import org.apache.ode.jacob.oo.ChannelProxy; |
| import org.apache.ode.jacob.soup.CommChannel; |
| import org.apache.ode.jacob.soup.jackson.JacksonExecutionQueueImpl.ExecutionQueueImplSerializer; |
| import org.apache.ode.jacob.vpu.ChannelFactory; |
| |
| import com.fasterxml.jackson.core.JsonGenerationException; |
| import com.fasterxml.jackson.core.JsonGenerator; |
| import com.fasterxml.jackson.databind.SerializerProvider; |
| import com.fasterxml.jackson.databind.jsontype.TypeSerializer; |
| import com.fasterxml.jackson.databind.jsontype.impl.ClassNameIdResolver; |
| import com.fasterxml.jackson.databind.ser.std.StdSerializer; |
| |
| /** |
| * Jackson serializer for Channel Proxies. |
| * Serializes only channel id and channel type. Also keeps a |
| * list of serialized channels, which is needed for the garbage |
| * collection of unused channels in the ExecutionQueue serializer. |
| * |
| * @author Tammo van Lessen |
| * |
| */ |
| public class ChannelProxySerializer extends StdSerializer<ChannelProxy>{ |
| |
| private final ExecutionQueueImplSerializer executionQueueImplSerializer; |
| |
| protected ChannelProxySerializer(ExecutionQueueImplSerializer executionQueueImplSerializer) { |
| super(ChannelProxy.class); |
| this.executionQueueImplSerializer = executionQueueImplSerializer; |
| } |
| |
| @Override |
| public void serialize(ChannelProxy value, JsonGenerator jgen, |
| SerializerProvider provider) throws IOException, |
| JsonGenerationException { |
| jgen.writeStartObject(); |
| serializeContents(value, jgen, provider); |
| jgen.writeEndObject(); |
| } |
| |
| @Override |
| public void serializeWithType(ChannelProxy value, JsonGenerator jgen, SerializerProvider provider, |
| TypeSerializer typeSer) |
| throws IOException, JsonGenerationException |
| { |
| typeSer.writeTypePrefixForObject(value, jgen); |
| serializeContents(value, jgen, provider); |
| typeSer.writeTypeSuffixForObject(value, jgen); |
| } |
| |
| private void serializeContents(ChannelProxy value, JsonGenerator jgen, |
| SerializerProvider provider) throws JsonGenerationException, IOException { |
| CommChannel commChannel = ChannelFactory.getBackend((Channel)value); |
| ClassNameIdResolver idResolver = new ClassNameIdResolver(provider.constructType(commChannel.getType()), provider.getTypeFactory()); |
| Integer cid = (Integer)commChannel.getId(); |
| jgen.writeStringField("channelType", idResolver.idFromBaseType()); |
| jgen.writeNumberField("channelId", cid); |
| |
| // save channel id for garbage collection |
| executionQueueImplSerializer.markChannelUsed(cid); |
| } |
| |
| } |