001/*
002 * (C) Copyright 2014 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 *     <a href="mailto:grenard@nuxeo.com">Guillaume Renard</a>
018 *
019 */
020
021package org.nuxeo.ecm.restapi.server.jaxrs.routing.io;
022
023import java.io.IOException;
024import java.io.OutputStream;
025import java.lang.annotation.Annotation;
026import java.lang.reflect.Type;
027import java.util.List;
028
029import javax.servlet.http.HttpServletRequest;
030import javax.ws.rs.Produces;
031import javax.ws.rs.WebApplicationException;
032import javax.ws.rs.core.Context;
033import javax.ws.rs.core.HttpHeaders;
034import javax.ws.rs.core.MediaType;
035import javax.ws.rs.core.MultivaluedMap;
036import javax.ws.rs.core.UriInfo;
037import javax.ws.rs.ext.Provider;
038
039import org.apache.commons.logging.Log;
040import org.apache.commons.logging.LogFactory;
041import org.codehaus.jackson.JsonEncoding;
042import org.codehaus.jackson.JsonFactory;
043import org.codehaus.jackson.JsonGenerator;
044import org.nuxeo.ecm.automation.jaxrs.io.EntityListWriter;
045import org.nuxeo.ecm.platform.routing.api.DocumentRoute;
046
047/**
048 * @since 7.2
049 */
050@Provider
051@Produces({ "application/json+nxentity", "application/json" })
052public class DocumentRouteListWriter extends EntityListWriter<DocumentRoute> {
053
054    private static final Log log = LogFactory.getLog(DocumentRouteListWriter.class);
055
056    @Context
057    JsonFactory factory;
058
059    @Context
060    protected HttpHeaders headers;
061
062    @Context
063    protected HttpServletRequest request;
064
065    @Context
066    UriInfo uriInfo;
067
068    @Override
069    protected String getEntityType() {
070        return "workflows";
071    }
072
073    @Override
074    protected void writeItem(JsonGenerator jg, DocumentRoute item) throws IOException {
075        // do nothing, everything is done in #writeTo
076    }
077
078    @Override
079    public void writeTo(List<DocumentRoute> docRoutes, Class<?> type, Type genericType, Annotation[] annotations,
080            MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream)
081            throws IOException, WebApplicationException {
082        try {
083            JsonGenerator jg = factory.createJsonGenerator(entityStream, JsonEncoding.UTF8);
084            jg.writeStartObject();
085            jg.writeStringField("entity-type", "worflows");
086            jg.writeArrayFieldStart("entries");
087            for (DocumentRoute docRoute : docRoutes) {
088                jg.writeStartObject();
089                jg.writeStringField("entity-type", "workflow");
090                DocumentRouteWriter.writeDocumentRoute(jg, docRoute, request, uriInfo);
091                jg.writeEndObject();
092            }
093            jg.writeEndArray();
094            jg.writeEndObject();
095            jg.flush();
096        } catch (IOException e) {
097            log.error("Failed to serialize document route list", e);
098            throw new WebApplicationException(500);
099        }
100    }
101}