/*
* Copyright 2013 eXo Platform SAS
*
* 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 juzu.impl.io;
import juzu.io.Chunk;
import juzu.io.Stream;
import juzu.io.Streamable;
/** @author Julien Viet */
public class StreamableDecorator implements Streamable {
/** . */
private final Streamable producer;
public StreamableDecorator(Streamable producer) {
this.producer = producer;
}
protected void sendHeader(Stream consumer) {
}
protected void sendFooter(Stream consumer) {
}
public void send(final Stream stream) throws IllegalStateException {
sendHeader(stream);
Stream wrapper = new Stream() {
public void provide(Chunk chunk) {
stream.provide(chunk);
}
public void close(Thread.UncaughtExceptionHandler errorHandler) {
try {
sendFooter(stream);
}
finally {
stream.close(errorHandler);
}
}
};
producer.send(wrapper);
}
}