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.enrichers; 021 022import static org.nuxeo.ecm.core.io.registry.reflect.Instantiations.SINGLETON; 023import static org.nuxeo.ecm.core.io.registry.reflect.Priorities.REFERENCE; 024 025import java.io.IOException; 026import java.util.Map; 027 028import org.nuxeo.ecm.core.api.DocumentModel; 029import org.nuxeo.ecm.core.io.registry.reflect.Setup; 030 031import com.fasterxml.jackson.core.JsonGenerator; 032 033/** 034 * Enrich {@link DocumentModel} Json. 035 * <p> 036 * Add custom key/value information as json attachment. 037 * <p> 038 * Enable if parameter enrichers-document=contextualParameters. 039 * <p> 040 * Format is: 041 * 042 * <pre> 043 * { 044 * "entity-type":"document", 045 * ... 046 * "contextParameters": { 047 * "KEY": "VALUE" <- key/value pairs come from context parameter "contextualParameters" - a Map<String, String> is expected. 048 * } 049 * } 050 * </pre> 051 * 052 * @since 7.2 053 */ 054@Setup(mode = SINGLETON, priority = REFERENCE) 055public class ContextualParametersJsonEnricher extends AbstractJsonEnricher<DocumentModel> { 056 057 public static final String NAME = "contextualParameters"; 058 059 public ContextualParametersJsonEnricher() { 060 super(NAME); 061 } 062 063 @Override 064 public void write(JsonGenerator jg, DocumentModel enriched) throws IOException { 065 Map<String, String> contextParameters = ctx.getParameter(NAME); 066 if (contextParameters != null && !contextParameters.isEmpty()) { 067 for (Map.Entry<String, String> parameter : contextParameters.entrySet()) { 068 jg.writeStringField(parameter.getKey(), parameter.getValue()); 069 } 070 } 071 } 072 073}