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    
022    import org.apache.camel.StreamCache;
023    import org.apache.camel.StringSource;
024    import org.apache.camel.util.IOHelper;
025    
026    /**
027     * {@link org.apache.camel.StreamCache} implementation for {@link org.apache.camel.StringSource}s
028     */
029    public final class SourceCache extends StringSource implements StreamCache {
030    
031        private static final long serialVersionUID = 1L;
032        private final int length;
033    
034        public SourceCache(String data) {
035            super(data);
036            this.length = data.length();
037        }
038    
039        public void reset() {
040            // do nothing here
041        }
042    
043        public void writeTo(OutputStream os) throws IOException {
044            IOHelper.copy(getInputStream(), os);
045        }
046    
047        public boolean inMemory() {
048            return true;
049        }
050    
051        @Override
052        public long length() {
053            return length;
054        }
055    }