001/* 002 * (C) Copyright 2015 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * Nicolas Chapurlat <nchapurlat@nuxeo.com> 018 */ 019 020package org.nuxeo.ecm.core.io.marshallers.json; 021 022import java.io.IOException; 023import java.io.OutputStream; 024import java.io.Writer; 025 026import org.apache.commons.io.output.WriterOutputStream; 027import org.codehaus.jackson.JsonGenerator; 028 029/** 030 * This {@link OutputStream} is a technical wrapper for {@link JsonGenerator}. It's used to broadcast a 031 * {@link JsonGenerator} between marshallers. 032 * <p> 033 * take a look at {@link AbstractJsonWriter#getGenerator(OutputStream, boolean)} to understand the mechanism. 034 * </p> 035 * 036 * @since 7.2 037 */ 038public class OutputStreamWithJsonWriter extends OutputStream { 039 040 private OutputStream out; 041 042 private JsonGenerator jsonGenerator; 043 044 public OutputStreamWithJsonWriter(JsonGenerator jsonGenerator) { 045 super(); 046 this.jsonGenerator = jsonGenerator; 047 Object outputTarget = jsonGenerator.getOutputTarget(); 048 if (outputTarget instanceof OutputStream) { 049 out = (OutputStream) outputTarget; 050 } else if (outputTarget instanceof Writer) { 051 out = new WriterOutputStream((Writer) outputTarget); 052 } 053 } 054 055 public JsonGenerator getJsonGenerator() { 056 return jsonGenerator; 057 } 058 059 @Override 060 public void write(int b) throws IOException { 061 out.write(b); 062 } 063 064 @Override 065 public void write(byte[] b) throws IOException { 066 out.write(b); 067 } 068 069 @Override 070 public void write(byte[] b, int off, int len) throws IOException { 071 out.write(b, off, len); 072 } 073 074 @Override 075 public void flush() throws IOException { 076 out.flush(); 077 } 078 079 @Override 080 public void close() throws IOException { 081 out.close(); 082 } 083 084}