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Ehcache is an open source, standards-based cache used to boost performance, offload the database and simplify scalability. Ehcache is robust, proven and full-featured and this has made it the most widely-used Java-based cache.

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//
//  ========================================================================
//  Copyright (c) 1995-2018 Mort Bay Consulting Pty. Ltd.
//  ------------------------------------------------------------------------
//  All rights reserved. This program and the accompanying materials
//  are made available under the terms of the Eclipse Public License v1.0
//  and Apache License v2.0 which accompanies this distribution.
//
//      The Eclipse Public License is available at
//      http://www.eclipse.org/legal/epl-v10.html
//
//      The Apache License v2.0 is available at
//      http://www.opensource.org/licenses/apache2.0.php
//
//  You may elect to redistribute this code under either of these licenses.
//  ========================================================================
//

package org.eclipse.jetty.server;

import java.io.IOException;
import java.io.Writer;

import org.eclipse.jetty.util.ByteArrayOutputStream2;

/**
 * 
 */
public abstract class HttpWriter extends Writer
{
    public static final int MAX_OUTPUT_CHARS = 512; 
    
    final HttpOutput _out;
    final ByteArrayOutputStream2 _bytes;
    final char[] _chars;

    /* ------------------------------------------------------------ */
    public HttpWriter(HttpOutput out)
    {
        _out=out;
        _chars=new char[MAX_OUTPUT_CHARS];
        _bytes = new ByteArrayOutputStream2(MAX_OUTPUT_CHARS);   
    }

    /* ------------------------------------------------------------ */
    @Override
    public void close() throws IOException
    {
        _out.close();
    }

    /* ------------------------------------------------------------ */
    @Override
    public void flush() throws IOException
    {
        _out.flush();
    }

    /* ------------------------------------------------------------ */
    @Override
    public void write (String s,int offset, int length) throws IOException
    {   
        while (length > MAX_OUTPUT_CHARS)
        {
            write(s, offset, MAX_OUTPUT_CHARS);
            offset += MAX_OUTPUT_CHARS;
            length -= MAX_OUTPUT_CHARS;
        }

        s.getChars(offset, offset + length, _chars, 0);
        write(_chars, 0, length);
    }

    /* ------------------------------------------------------------ */
    @Override
    public void write (char[] s,int offset, int length) throws IOException
    {         
        throw new AbstractMethodError();
    }
}