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 */ 017package org.apache.camel.converter.stream; 018 019import java.io.IOException; 020import java.io.OutputStream; 021import java.io.StringReader; 022 023import org.apache.camel.Exchange; 024import org.apache.camel.StreamCache; 025 026/** 027 * A {@link org.apache.camel.StreamCache} for String {@link java.io.Reader}s 028 */ 029public class ReaderCache extends StringReader implements StreamCache { 030 031 private final String data; 032 033 public ReaderCache(String data) { 034 super(data); 035 this.data = data; 036 } 037 038 public void close() { 039 // Do not release the string for caching 040 } 041 042 @Override 043 public void reset() { 044 try { 045 super.reset(); 046 } catch (IOException e) { 047 // ignore 048 } 049 } 050 051 public void writeTo(OutputStream os) throws IOException { 052 os.write(data.getBytes()); 053 } 054 055 public StreamCache copy(Exchange exchange) throws IOException { 056 return new ReaderCache(data); 057 } 058 059 public boolean inMemory() { 060 return true; 061 } 062 063 public long length() { 064 return data.length(); 065 } 066 067 String getData() { 068 return data; 069 } 070 071}