001/* 002 * Licensed under the Apache License, Version 2.0 (the "License"); 003 * you may not use this file except in compliance with the License. 004 * You may obtain a copy of the License at 005 * 006 * http://www.apache.org/licenses/LICENSE-2.0 007 * 008 * Unless required by applicable law or agreed to in writing, software 009 * distributed under the License is distributed on an "AS IS" BASIS, 010 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 011 * See the License for the specific language governing permissions and 012 * limitations under the License. 013 */ 014package org.gbif.ws.server; 015 016import java.io.IOException; 017import java.io.InputStream; 018 019import javax.servlet.ReadListener; 020import javax.servlet.ServletInputStream; 021 022public class DelegatingServletInputStream extends ServletInputStream { 023 024 private final InputStream sourceStream; 025 026 private boolean finished = false; 027 028 public DelegatingServletInputStream(InputStream sourceStream) { 029 this.sourceStream = sourceStream; 030 } 031 032 public final InputStream getSourceStream() { 033 return this.sourceStream; 034 } 035 036 @Override 037 public int read() throws IOException { 038 int data = this.sourceStream.read(); 039 if (data == -1) { 040 this.finished = true; 041 } 042 return data; 043 } 044 045 @Override 046 public int read(byte[] b, int off, int len) throws IOException { 047 int data = this.sourceStream.read(b, off, len); 048 if (data == -1) { 049 this.finished = true; 050 } 051 return data; 052 } 053 054 @Override 055 public int available() throws IOException { 056 return this.sourceStream.available(); 057 } 058 059 @Override 060 public void close() throws IOException { 061 super.close(); 062 this.sourceStream.close(); 063 } 064 065 @Override 066 public boolean isFinished() { 067 return this.finished; 068 } 069 070 @Override 071 public boolean isReady() { 072 return true; 073 } 074 075 @Override 076 public void setReadListener(ReadListener readListener) { 077 throw new UnsupportedOperationException(); 078 } 079}