org.apache.axis.transport.http.FilterPrintWriter Maven / Gradle / Ivy
/*
* Copyright 2001-2004 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.axis.transport.http;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
/**
* simple wrapper around PrintWriter class. It creates the PrintWriter
* object on demand, thus allowing to have a ResponseWriter class for
* structural reasons, while actually creating the writer on demand.
* This solves the problem of having to have a PrintWriter object available and being forced
* to set the contentType of the response object after creation.
*
* @author Davanum Srinivas ([email protected])
*/
public class FilterPrintWriter extends PrintWriter {
private PrintWriter _writer = null;
private HttpServletResponse _response = null;
private static OutputStream _sink = new NullOutputStream();
public FilterPrintWriter(HttpServletResponse aResponse) {
super(_sink);
_response = aResponse;
}
private PrintWriter getPrintWriter() {
if (_writer == null) {
try {
_writer = _response.getWriter();
} catch (IOException e) {
throw new RuntimeException(e.toString());
}
}
return _writer;
}
public void write(int i) {
getPrintWriter().write(i);
}
public void write(char[] chars) {
getPrintWriter().write(chars);
}
public void write(char[] chars, int i, int i1) {
getPrintWriter().write(chars, i, i1);
}
public void write(String string) {
getPrintWriter().write(string);
}
public void write(String string, int i, int i1) {
getPrintWriter().write(string, i, i1);
}
public void flush() {
getPrintWriter().flush();
}
public void close() {
getPrintWriter().close();
}
public boolean checkError() {
return getPrintWriter().checkError();
}
public void print(boolean b) {
getPrintWriter().print(b);
}
public void print(char c) {
getPrintWriter().print(c);
}
public void print(int i) {
getPrintWriter().print(i);
}
public void print(long l) {
getPrintWriter().print(l);
}
public void print(float v) {
getPrintWriter().print(v);
}
public void print(double v) {
getPrintWriter().print(v);
}
public void print(char[] chars) {
getPrintWriter().print(chars);
}
public void print(String string) {
getPrintWriter().print(string);
}
public void print(Object object) {
getPrintWriter().print(object);
}
public void println() {
getPrintWriter().println();
}
public void println(boolean b) {
getPrintWriter().println(b);
}
public void println(char c) {
getPrintWriter().println(c);
}
public void println(int i) {
getPrintWriter().println(i);
}
public void println(long l) {
getPrintWriter().println(l);
}
public void println(float v) {
getPrintWriter().println(v);
}
public void println(double v) {
getPrintWriter().println(v);
}
public void println(char[] chars) {
getPrintWriter().println(chars);
}
public void println(String string) {
getPrintWriter().println(string);
}
public void println(Object object) {
getPrintWriter().println(object);
}
static public class NullOutputStream extends OutputStream {
public void write(int b) {
// no code -- no output
}
}
}