java/testing/org/apache/derbyTesting/functionTests/util/streams/ReadOnceByteArrayInputStream.java

/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to you 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.derbyTesting.functionTests.util.streams;

import java.io.ByteArrayInputStream;
import java.io.IOException;

public class ReadOnceByteArrayInputStream extends ByteArrayInputStream {

    private boolean isClosed;
    
    public ReadOnceByteArrayInputStream(byte[] arg0) {
        super(arg0);
    }

    public ReadOnceByteArrayInputStream(byte[] arg0, int arg1, int arg2) {
        super(arg0, arg1, arg2);
    }
    
    public boolean markSupported()
    {
        return false;
    }
    
    public void close() throws IOException
    {
        isClosed = true;
        super.close();
    }
    
    public int read(byte[] b,
            int off,
            int len)
    {
        if (isClosed)
            return -1;
        return super.read(b, off, len);
    }
    
    public int read()
    {
        if (isClosed)
            return -1;
        return super.read();
    }

}