org.apache.tika.io.CloseShieldInputStream Maven / Gradle / Ivy
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/*
* 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.tika.io;
import java.io.InputStream;
/**
* Proxy stream that prevents the underlying input stream from being closed.
*
* This class is typically used in cases where an input stream needs to be
* passed to a component that wants to explicitly close the stream even if
* more input would still be available to other components.
*
* @since Apache Tika 0.4, copied from Commons IO 1.4
*/
public class CloseShieldInputStream extends ProxyInputStream {
/**
* Creates a proxy that shields the given input stream from being
* closed.
*
* @param in underlying input stream
*/
public CloseShieldInputStream(InputStream in) {
super(in);
}
/**
* Replaces the underlying input stream with a {@link ClosedInputStream}
* sentinel. The original input stream will remain open, but this proxy
* will appear closed.
*/
@Override
public void close() {
in = new ClosedInputStream();
}
}