001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.camel.converter.stream;
018    
019    import java.io.IOException;
020    import java.io.OutputStream;
021    import java.io.StringReader;
022    
023    import org.apache.camel.StreamCache;
024    
025    /**
026     * A {@link org.apache.camel.StreamCache} for String {@link java.io.Reader}s
027     */
028    public class ReaderCache extends StringReader implements StreamCache {
029    
030        private final String data;
031    
032        public ReaderCache(String data) {
033            super(data);
034            this.data = data;
035        }
036    
037        public void close() {
038            // Do not release the string for caching
039        }
040    
041        @Override
042        public void reset() {
043            try {
044                super.reset();
045            } catch (IOException e) {
046                // ignore
047            }
048        }
049    
050        public void writeTo(OutputStream os) throws IOException {
051            os.write(data.getBytes());
052        }
053    
054        public boolean inMemory() {
055            return true;
056        }
057    
058        public long length() {
059            return data.length();
060        }
061    
062        String getData() {
063            return data;
064        }
065    
066    }