Java tutorial
/* Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.activiti.rest.service.api.runtime.process; import java.util.List; import java.util.Map; import org.activiti.engine.form.FormProperty; import org.activiti.engine.form.StartFormData; import org.activiti.engine.impl.form.EnumFormType; import org.activiti.rest.common.api.ActivitiUtil; import org.activiti.rest.common.api.SecuredResource; import org.restlet.resource.Get; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.node.ArrayNode; import com.fasterxml.jackson.databind.node.ObjectNode; /** * @author Tijs Rademakers */ public class ProcessDefinitionPropertiesResource extends SecuredResource { @Get public ObjectNode getStartFormProperties() { if (authenticate() == false) return null; String processDefinitionId = (String) getRequest().getAttributes().get("processDefinitionId"); StartFormData startFormData = ActivitiUtil.getFormService().getStartFormData(processDefinitionId); ObjectNode responseJSON = new ObjectMapper().createObjectNode(); ArrayNode propertiesJSON = new ObjectMapper().createArrayNode(); if (startFormData != null) { List<FormProperty> properties = startFormData.getFormProperties(); for (FormProperty property : properties) { ObjectNode propertyJSON = new ObjectMapper().createObjectNode(); propertyJSON.put("id", property.getId()); propertyJSON.put("name", property.getName()); if (property.getValue() != null) { propertyJSON.put("value", property.getValue()); } else { propertyJSON.putNull("value"); } if (property.getType() != null) { propertyJSON.put("type", property.getType().getName()); if (property.getType() instanceof EnumFormType) { @SuppressWarnings("unchecked") Map<String, String> valuesMap = (Map<String, String>) property.getType() .getInformation("values"); if (valuesMap != null) { ArrayNode valuesArray = new ObjectMapper().createArrayNode(); propertyJSON.put("enumValues", valuesArray); for (String key : valuesMap.keySet()) { ObjectNode valueJSON = new ObjectMapper().createObjectNode(); valueJSON.put("id", key); valueJSON.put("name", valuesMap.get(key)); valuesArray.add(valueJSON); } } } } else { propertyJSON.put("type", "String"); } propertyJSON.put("required", property.isRequired()); propertyJSON.put("readable", property.isReadable()); propertyJSON.put("writable", property.isWritable()); propertiesJSON.add(propertyJSON); } } responseJSON.put("data", propertiesJSON); return responseJSON; } }