/*
* 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.openjpa.jdbc.meta.strats;
import java.io.CharArrayReader;
import java.io.IOException;
import java.io.Reader;
/**
* This class is used to kwon where the content of the Reader is load.
* If the content is load out of the flush then throws a
* UnsupportedOperationException
*
* @author Ignacio Andreu
* @since 1.1.0
*/
public class ReaderWrapper extends Reader {
private Reader reader;
public ReaderWrapper(String s) {
this.reader = new CharArrayReader(s.toCharArray());
}
public void close() throws IOException {
reader.close();
}
public int read(char[] cbuf, int off, int len) throws IOException {
StackTraceElement[] ste = Thread.currentThread().getStackTrace();
for (StackTraceElement element : ste) {
if ("flush".equals(element.getMethodName())) {
return reader.read(cbuf, off, len);
}
}
throw new UnsupportedOperationException();
}
}