org.directwebremoting.util.DelegatingServletOutputStream Maven / Gradle / Ivy

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package org.directwebremoting.util;

import java.io.IOException;
import java.io.OutputStream;

import javax.servlet.ServletOutputStream;
import javax.servlet.WriteListener;

/**
 * Delegating implementation of ServletOutputStream.
 */
public class DelegatingServletOutputStream extends ServletOutputStream {

    /**
     * Create a new DelegatingServletOutputStream.
     * @param proxy the target OutputStream
     */
    public DelegatingServletOutputStream(OutputStream proxy)
    {
        this.proxy = proxy;
    }

    /**
     * Accessor for the stream that we are proxying to
     * @return The stream we proxy to
     */
    public OutputStream getTargetStream()
    {
        return proxy;
    }

    @Override public void write(int b) throws IOException {proxy.write(b);}

    @Override public void flush() throws IOException {
        super.flush();
        proxy.flush();
    }

    @Override public void close() throws IOException {
        super.close();
        proxy.close();
    }

    private final OutputStream proxy;

    /** @return true */
    @Override public boolean isReady() {return true;}

    /** Does nothing. */
    @Override public void setWriteListener(WriteListener writeListener) {}
}