/*
* Copyright 2008-2014 by Emeric Vernat
*
* This file is part of Java Melody.
*
* 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 net.bull.javamelody;
import java.io.IOException;
import java.io.OutputStream;
import javax.servlet.ServletOutputStream;
import javax.servlet.WriteListener;
/**
* Output stream pour un filtre implémentant ServletOutputStream à partir d'un autre ServletOutputStream ou d'un OutputStream.
* @author Emeric Vernat
*/
class FilterServletOutputStream extends ServletOutputStream {
private final OutputStream stream;
private final ServletOutputStream servletOutputStream;
/**
* Constructeur.
* @param output ServletOutputStream
*/
FilterServletOutputStream(ServletOutputStream output) {
super();
assert output != null;
stream = output;
servletOutputStream = output;
}
/**
* Constructeur.
* @param output OutputStream
*/
FilterServletOutputStream(OutputStream output) {
super();
assert output != null;
stream = output;
servletOutputStream = null;
}
/** {@inheritDoc} */
@Override
public void close() throws IOException {
stream.close();
}
/** {@inheritDoc} */
@Override
public void flush() throws IOException {
stream.flush();
}
/** {@inheritDoc} */
@Override
public void write(int b) throws IOException {
stream.write(b);
}
/** {@inheritDoc} */
@Override
public void write(byte[] bytes) throws IOException {
stream.write(bytes);
}
/** {@inheritDoc} */
@Override
public void write(byte[] bytes, int off, int len) throws IOException {
stream.write(bytes, off, len);
}
@Override
public boolean isReady() {
if (servletOutputStream != null) {
return servletOutputStream.isReady();
}
return true;
}
@Override
public void setWriteListener(WriteListener writeListener) {
if (servletOutputStream != null) {
servletOutputStream.setWriteListener(writeListener);
}
}
}