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.ByteArrayInputStream; 020import java.io.IOException; 021import java.io.OutputStream; 022 023import org.apache.camel.Exchange; 024import org.apache.camel.StreamCache; 025 026/** 027 * A {@link StreamCache} for caching using an in-memory byte array. 028 */ 029public final class InputStreamCache extends ByteArrayInputStream implements StreamCache { 030 031 public InputStreamCache(byte[] data) { 032 super(data); 033 } 034 035 public InputStreamCache(byte[] data, int count) { 036 super(data); 037 super.count = count; 038 } 039 040 public void writeTo(OutputStream os) throws IOException { 041 os.write(buf, pos, count - pos); 042 } 043 044 public StreamCache copy(Exchange exchange) { 045 return new InputStreamCache(buf, count); 046 } 047 048 public boolean inMemory() { 049 return true; 050 } 051 052 public long length() { 053 return count; 054 } 055}