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.ByteArrayInputStream; 020 import java.io.FilterInputStream; 021 import java.io.IOException; 022 import java.io.OutputStream; 023 024 import org.apache.camel.StreamCache; 025 import org.apache.camel.util.IOHelper; 026 027 /** 028 * A {@link StreamCache} for {@link java.io.ByteArrayInputStream} 029 */ 030 public class ByteArrayInputStreamCache extends FilterInputStream implements StreamCache { 031 032 private final int length; 033 034 public ByteArrayInputStreamCache(ByteArrayInputStream in) { 035 super(in); 036 this.length = in.available(); 037 } 038 039 public void reset() { 040 try { 041 super.reset(); 042 } catch (IOException e) { 043 // ignore 044 } 045 } 046 047 048 public void writeTo(OutputStream os) throws IOException { 049 IOHelper.copyAndCloseInput(in, os); 050 } 051 052 public boolean inMemory() { 053 return true; 054 } 055 056 @Override 057 public long length() { 058 return length; 059 } 060 }