flink-core/src/main/java/org/apache/flink/api/common/io/blockcompression/ReusableByteArrayInputStream.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.flink.api.common.io.blockcompression;

import java.io.ByteArrayInputStream;

public class ReusableByteArrayInputStream extends ByteArrayInputStream {

	ReusableByteArrayInputStream(byte[] buf, int offset, int length) {
		super(buf, offset, length);
	}

	void reuse(byte[] buf, int offset, int length) {
		this.buf = buf;
		this.pos = offset;
		this.count = Math.min(offset + length, buf.length);
		this.mark = offset;
	}
}