| // Copyright 2008, 2009, 2010 The Apache Software Foundation |
| // |
| // 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.apache.tapestry5.corelib.internal; |
| |
| import java.io.IOException; |
| import java.io.ObjectOutputStream; |
| |
| import org.apache.tapestry5.ComponentAction; |
| import org.apache.tapestry5.runtime.Component; |
| import org.apache.tapestry5.services.ClientDataEncoder; |
| import org.apache.tapestry5.services.ClientDataSink; |
| import org.slf4j.Logger; |
| |
| /** |
| * Used to collection component actions, with the ultimate goal being the creation of a MIME-encoded string of the |
| * serialization of those actions. |
| */ |
| public class ComponentActionSink |
| { |
| private final Logger logger; |
| |
| private final ObjectOutputStream stream; |
| |
| private final ClientDataSink sink; |
| |
| private boolean empty = true; |
| |
| public ComponentActionSink(Logger logger, ClientDataEncoder encoder) |
| { |
| this.logger = logger; |
| |
| sink = encoder.createSink(); |
| |
| stream = sink.getObjectOutputStream(); |
| } |
| |
| public <T> void store(T component, ComponentAction<T> action) |
| { |
| Component castComponent = (Component) component; |
| assert action != null; |
| |
| String completeId = castComponent.getComponentResources().getCompleteId(); |
| |
| logger.debug("Storing action: {} {}", completeId, action); |
| |
| try |
| { |
| // Writing the complete id is not very efficient, but the GZip filter |
| // should help out there. |
| stream.writeUTF(completeId); |
| stream.writeObject(action); |
| } |
| catch (IOException ex) |
| { |
| throw new RuntimeException(InternalMessages.componentActionNotSerializable(completeId, ex), ex); |
| } |
| |
| empty = false; |
| } |
| |
| /** @since 5.2.0 */ |
| public boolean isEmpty() |
| { |
| return empty; |
| } |
| |
| public String getClientData() |
| { |
| return sink.getClientData(); |
| } |
| } |