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.ByteArrayInputStream; 023import java.io.IOException; 024import java.io.InputStream; 025 026import org.codehaus.jackson.JsonNode; 027 028/** 029 * This {@link InputStream} is a technical wrapper for {@link JsonNode}. It's used to broadcast a JsonNode between 030 * marshallers. 031 * <p> 032 * take a look at {@link AbstractJsonReader#getNode(InputStream, boolean)} to understand the mechanism. 033 * </p> 034 * 035 * @since 7.2 036 */ 037public class InputStreamWithJsonNode extends InputStream { 038 039 private JsonNode jn; 040 041 private InputStream real = null; 042 043 public InputStreamWithJsonNode(JsonNode jn) { 044 super(); 045 this.jn = jn; 046 } 047 048 public JsonNode getJsonNode() { 049 return jn; 050 } 051 052 public InputStream getRealInputStream() { 053 if (real == null) { 054 real = new ByteArrayInputStream(jn.toString().getBytes()); 055 } 056 return real; 057 } 058 059 @Override 060 public int read() throws IOException { 061 return getRealInputStream().read(); 062 } 063 064 @Override 065 public int read(byte[] b) throws IOException { 066 return getRealInputStream().read(b); 067 } 068 069 @Override 070 public int read(byte[] b, int off, int len) throws IOException { 071 return getRealInputStream().read(b, off, len); 072 } 073 074 @Override 075 public long skip(long n) throws IOException { 076 return getRealInputStream().skip(n); 077 } 078 079 @Override 080 public String toString() { 081 return getRealInputStream().toString(); 082 } 083 084 @Override 085 public int available() throws IOException { 086 return getRealInputStream().available(); 087 } 088 089 @Override 090 public void close() throws IOException { 091 if (real != null) { 092 getRealInputStream().close(); 093 } 094 } 095 096 @Override 097 public void mark(int readlimit) { 098 getRealInputStream().mark(readlimit); 099 } 100 101 @Override 102 public void reset() throws IOException { 103 if (real != null) { 104 getRealInputStream().reset(); 105 } 106 } 107 108 @Override 109 public boolean markSupported() { 110 return getRealInputStream().markSupported(); 111 } 112 113}