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