001/* 002 * (C) Copyright 2015 Nuxeo SA (http://nuxeo.com/) and contributors. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the GNU Lesser General Public License 006 * (LGPL) version 2.1 which accompanies this distribution, and is available at 007 * http://www.gnu.org/licenses/lgpl-2.1.html 008 * 009 * This library is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * Contributors: 015 * Nicolas Chapurlat <nchapurlat@nuxeo.com> 016 */ 017 018package org.nuxeo.ecm.core.io.marshallers.json; 019 020import java.io.ByteArrayInputStream; 021import java.io.IOException; 022import java.io.InputStream; 023 024import org.codehaus.jackson.JsonNode; 025 026/** 027 * This {@link InputStream} is a technical wrapper for {@link JsonNode}. It's used to broadcast a JsonNode between 028 * marshallers. 029 * <p> 030 * take a look at {@link AbstractJsonReader#getNode(InputStream, boolean)} to understand the mechanism. 031 * </p> 032 * 033 * @since 7.2 034 */ 035public class InputStreamWithJsonNode extends InputStream { 036 037 private JsonNode jn; 038 039 private InputStream real = null; 040 041 public InputStreamWithJsonNode(JsonNode jn) { 042 super(); 043 this.jn = jn; 044 } 045 046 public JsonNode getJsonNode() { 047 return jn; 048 } 049 050 public InputStream getRealInputStream() { 051 if (real == null) { 052 real = new ByteArrayInputStream(jn.toString().getBytes()); 053 } 054 return real; 055 } 056 057 @Override 058 public int read() throws IOException { 059 return getRealInputStream().read(); 060 } 061 062 @Override 063 public int read(byte[] b) throws IOException { 064 return getRealInputStream().read(b); 065 } 066 067 @Override 068 public int read(byte[] b, int off, int len) throws IOException { 069 return getRealInputStream().read(b, off, len); 070 } 071 072 @Override 073 public long skip(long n) throws IOException { 074 return getRealInputStream().skip(n); 075 } 076 077 @Override 078 public String toString() { 079 return getRealInputStream().toString(); 080 } 081 082 @Override 083 public int available() throws IOException { 084 return getRealInputStream().available(); 085 } 086 087 @Override 088 public void close() throws IOException { 089 if (real != null) { 090 getRealInputStream().close(); 091 } 092 } 093 094 @Override 095 public void mark(int readlimit) { 096 getRealInputStream().mark(readlimit); 097 } 098 099 @Override 100 public void reset() throws IOException { 101 if (real != null) { 102 getRealInputStream().reset(); 103 } 104 } 105 106 @Override 107 public boolean markSupported() { 108 return getRealInputStream().markSupported(); 109 } 110 111}