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.types;
021
022import static javax.ws.rs.core.MediaType.APPLICATION_JSON_TYPE;
023import static org.nuxeo.ecm.core.io.registry.reflect.Instantiations.SINGLETON;
024import static org.nuxeo.ecm.core.io.registry.reflect.Priorities.REFERENCE;
025
026import java.io.IOException;
027import java.io.OutputStream;
028
029import org.codehaus.jackson.JsonGenerator;
030import org.nuxeo.ecm.core.io.marshallers.json.ExtensibleEntityJsonWriter;
031import org.nuxeo.ecm.core.io.marshallers.json.OutputStreamWithJsonWriter;
032import org.nuxeo.ecm.core.io.marshallers.json.enrichers.AbstractJsonEnricher;
033import org.nuxeo.ecm.core.io.registry.Writer;
034import org.nuxeo.ecm.core.io.registry.reflect.Setup;
035import org.nuxeo.ecm.core.schema.types.CompositeType;
036import org.nuxeo.ecm.core.schema.types.Schema;
037
038import com.thoughtworks.xstream.io.json.JsonWriter;
039
040/**
041 * Convert {@link CompositeType} to Json.
042 * <p>
043 * This marshaller is enrichable: register class implementing {@link AbstractJsonEnricher} and managing
044 * {@link CompositeType}.
045 * </p>
046 * <p>
047 * This marshaller is also extensible: extend it and simply override
048 * {@link ExtensibleEntityJsonWriter#extend(CompositeType, JsonWriter)}.
049 * </p>
050 * <p>
051 * Format is:
052 *
053 * <pre>
054 * {@code
055 * {
056 *   "entity-type":"facet",
057 *   "name": "FACET_NAME",
058 *   "schemas": [ { see {@link SchemaJsonWriter} for format }, { ... }, ... ],
059 *             <-- contextParameters if there are enrichers activated
060 *             <-- additional property provided by extend() method
061 * }
062 * </pre>
063 *
064 * </p>
065 *
066 * @since 7.2
067 */
068@Setup(mode = SINGLETON, priority = REFERENCE)
069public class FacetJsonWriter extends ExtensibleEntityJsonWriter<CompositeType> {
070
071    public static final String ENTITY_TYPE = "facet";
072
073    public FacetJsonWriter() {
074        super(ENTITY_TYPE, CompositeType.class);
075    }
076
077    @Override
078    protected void writeEntityBody(CompositeType facet, JsonGenerator jg) throws IOException {
079        jg.writeStringField("name", facet.getName());
080        if (facet.getSchemaNames() != null && facet.getSchemaNames().length > 0) {
081            jg.writeArrayFieldStart("schemas");
082            Writer<Schema> schemaWriter = registry.getWriter(ctx, Schema.class, APPLICATION_JSON_TYPE);
083            for (Schema schema : facet.getSchemas()) {
084                OutputStream out = new OutputStreamWithJsonWriter(jg);
085                schemaWriter.write(schema, Schema.class, Schema.class, APPLICATION_JSON_TYPE, out);
086            }
087            jg.writeEndArray();
088        }
089    }
090
091}