001/* 002 * (C) Copyright 2011 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 * matic 018 */ 019package org.nuxeo.ecm.automation.jaxrs.io; 020 021import java.io.IOException; 022import java.io.OutputStream; 023import java.lang.annotation.Annotation; 024import java.lang.reflect.Type; 025 026import javax.ws.rs.Produces; 027import javax.ws.rs.WebApplicationException; 028import javax.ws.rs.core.Context; 029import javax.ws.rs.core.MediaType; 030import javax.ws.rs.core.MultivaluedMap; 031import javax.ws.rs.ext.MessageBodyWriter; 032import javax.ws.rs.ext.Provider; 033 034import org.codehaus.jackson.JsonEncoding; 035import org.codehaus.jackson.JsonFactory; 036import org.codehaus.jackson.JsonGenerator; 037import org.codehaus.jackson.JsonNode; 038 039/** 040 * @author bstefanescu 041 */ 042@Provider 043@Produces("application/json") 044public class JsonTreeWriter implements MessageBodyWriter<JsonNode> { 045 046 @Context 047 JsonFactory factory; 048 049 @Override 050 public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) { 051 return JsonNode.class.isAssignableFrom(type); 052 } 053 054 @Override 055 public long getSize(JsonNode t, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) { 056 return -1; 057 } 058 059 @Override 060 public void writeTo(JsonNode t, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType, 061 MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException, 062 WebApplicationException { 063 JsonGenerator jg = factory.createJsonGenerator(entityStream, JsonEncoding.UTF8); 064 jg.writeTree(t); 065 jg.flush(); 066 } 067 068}