001/*
002 *  Licensed to the Apache Software Foundation (ASF) under one
003 *  or more contributor license agreements.  See the NOTICE file
004 *  distributed with this work for additional information
005 *  regarding copyright ownership.  The ASF licenses this file
006 *  to you under the Apache License, Version 2.0 (the
007 *  "License"); you may not use this file except in compliance
008 *  with the License.  You may obtain a copy of the License at
009 *
010 *    http://www.apache.org/licenses/LICENSE-2.0
011 *
012 *  Unless required by applicable law or agreed to in writing,
013 *  software distributed under the License is distributed on an
014 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 *  KIND, either express or implied.  See the License for the
016 *  specific language governing permissions and limitations
017 *  under the License.
018 *
019 */
020package org.apache.mina.util.byteaccess;
021
022import org.apache.mina.core.buffer.IoBuffer;
023
024/**
025 * Creates <code>ByteArray</code> backed by a heap-allocated
026 * <code>IoBuffer</code>. The free method on returned
027 * <code>ByteArray</code>s is a nop.
028 * 
029 * @author <a href="http://mina.apache.org">Apache MINA Project</a>
030 */
031public class SimpleByteArrayFactory implements ByteArrayFactory {
032    /**
033     * 
034     * Creates a new instance of SimpleByteArrayFactory.
035     *
036     */
037    public SimpleByteArrayFactory() {
038        super();
039    }
040
041    /**
042     * {@inheritDoc}
043     */
044    public ByteArray create(int size) {
045        if (size < 0) {
046            throw new IllegalArgumentException("Buffer size must not be negative:" + size);
047        }
048        IoBuffer bb = IoBuffer.allocate(size);
049        ByteArray ba = new BufferByteArray(bb) {
050
051            @Override
052            public void free() {
053                // Nothing to do.
054            }
055
056        };
057        return ba;
058    }
059
060}