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/* 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.form.engine.impl.cmd; import java.io.Serializable; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import org.activiti.editor.form.converter.FormJsonConverter; import org.activiti.engine.ActivitiException; import org.activiti.engine.ActivitiObjectNotFoundException; import org.activiti.form.api.FormInstance; import org.activiti.form.engine.FormEngineConfiguration; import org.activiti.form.engine.FormExpression; import org.activiti.form.engine.impl.interceptor.Command; import org.activiti.form.engine.impl.interceptor.CommandContext; import org.activiti.form.engine.impl.persistence.deploy.DeploymentManager; import org.activiti.form.engine.impl.persistence.deploy.FormDefinitionCacheEntry; import org.activiti.form.engine.impl.persistence.entity.FormDefinitionEntity; import org.activiti.form.model.ExpressionFormField; import org.activiti.form.model.FormField; import org.activiti.form.model.FormFieldTypes; import org.activiti.form.model.FormModel; import org.apache.commons.lang3.StringUtils; import org.joda.time.LocalDate; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.fasterxml.jackson.databind.JsonNode; /** * @author Tijs Rademakers */ public class GetFormModelWithVariablesCmd implements Command<FormModel>, Serializable { private static Logger logger = LoggerFactory.getLogger(GetFormModelWithVariablesCmd.class); private static final long serialVersionUID = 1L; protected String formDefinitionKey; protected String parentDeploymentId; protected String formDefinitionId; protected String processInstanceId; protected String tenantId; protected Map<String, Object> variables; public GetFormModelWithVariablesCmd(String formDefinitionKey, String formDefinitionId, String processInstanceId, Map<String, Object> variables) { initializeValues(formDefinitionKey, formDefinitionId, null, variables); this.processInstanceId = processInstanceId; } public GetFormModelWithVariablesCmd(String formDefinitionKey, String parentDeploymentId, String formDefinitionId, String processInstanceId, Map<String, Object> variables) { initializeValues(formDefinitionKey, formDefinitionId, null, variables); this.parentDeploymentId = parentDeploymentId; this.processInstanceId = processInstanceId; } public GetFormModelWithVariablesCmd(String formDefinitionKey, String parentDeploymentId, String formDefinitionId, String processInstanceId, String tenantId, Map<String, Object> variables) { initializeValues(formDefinitionKey, formDefinitionId, null, variables); this.parentDeploymentId = parentDeploymentId; this.processInstanceId = processInstanceId; this.tenantId = tenantId; } public FormModel execute(CommandContext commandContext) { FormDefinitionCacheEntry formCacheEntry = resolveFormDefinition(commandContext); FormModel formModel = resolveFormModel(formCacheEntry, commandContext); fillFormFieldValues(formModel, commandContext); return formModel; } protected void initializeValues(String formDefinitionKey, String formDefinitionId, String tenantId, Map<String, Object> variables) { this.formDefinitionKey = formDefinitionKey; this.formDefinitionId = formDefinitionId; this.tenantId = tenantId; if (variables != null) { this.variables = variables; } else { this.variables = new HashMap<String, Object>(); } } protected void fillFormFieldValues(FormModel formDefinition, CommandContext commandContext) { FormEngineConfiguration formEngineConfiguration = commandContext.getFormEngineConfiguration(); List<FormField> allFields = formDefinition.listAllFields(); if (allFields != null) { Map<String, JsonNode> formInstanceFieldMap = fillPreviousFormInstanceValues(formEngineConfiguration); fillVariablesWithFormInstanceValues(formInstanceFieldMap, allFields); for (FormField field : allFields) { if (field instanceof ExpressionFormField) { ExpressionFormField expressionField = (ExpressionFormField) field; FormExpression formExpression = formEngineConfiguration.getExpressionManager() .createExpression(expressionField.getExpression()); try { field.setValue(formExpression.getValue(variables)); } catch (Exception e) { logger.error("Error getting value for expression " + expressionField.getExpression() + " " + e.getMessage(), e); } } else { field.setValue(variables.get(field.getId())); } } } } protected FormDefinitionCacheEntry resolveFormDefinition(CommandContext commandContext) { DeploymentManager deploymentManager = commandContext.getFormEngineConfiguration().getDeploymentManager(); // Find the form definition FormDefinitionEntity formDefinitionEntity = null; if (formDefinitionId != null) { formDefinitionEntity = deploymentManager.findDeployedFormDefinitionById(formDefinitionId); if (formDefinitionEntity == null) { throw new ActivitiObjectNotFoundException( "No form definition found for id = '" + formDefinitionId + "'", FormDefinitionEntity.class); } } else if (formDefinitionKey != null && (tenantId == null || FormEngineConfiguration.NO_TENANT_ID.equals(tenantId)) && parentDeploymentId == null) { formDefinitionEntity = deploymentManager.findDeployedLatestFormDefinitionByKey(formDefinitionKey); if (formDefinitionEntity == null) { throw new ActivitiObjectNotFoundException( "No form definition found for key '" + formDefinitionKey + "'", FormDefinitionEntity.class); } } else if (formDefinitionKey != null && tenantId != null && !FormEngineConfiguration.NO_TENANT_ID.equals(tenantId) && parentDeploymentId == null) { formDefinitionEntity = deploymentManager .findDeployedLatestFormDefinitionByKeyAndTenantId(formDefinitionKey, tenantId); if (formDefinitionEntity == null) { throw new ActivitiObjectNotFoundException("No form definition found for key '" + formDefinitionKey + "' for tenant identifier " + tenantId, FormDefinitionEntity.class); } } else if (formDefinitionKey != null && (tenantId == null || FormEngineConfiguration.NO_TENANT_ID.equals(tenantId)) && parentDeploymentId != null) { formDefinitionEntity = deploymentManager.findDeployedLatestFormDefinitionByKeyAndParentDeploymentId( formDefinitionKey, parentDeploymentId); if (formDefinitionEntity == null) { throw new ActivitiObjectNotFoundException("No form definition found for key '" + formDefinitionKey + "' for parent deployment id " + parentDeploymentId, FormDefinitionEntity.class); } } else if (formDefinitionKey != null && tenantId != null && !FormEngineConfiguration.NO_TENANT_ID.equals(tenantId) && parentDeploymentId != null) { formDefinitionEntity = deploymentManager .findDeployedLatestFormDefinitionByKeyParentDeploymentIdAndTenantId(formDefinitionKey, parentDeploymentId, tenantId); if (formDefinitionEntity == null) { throw new ActivitiObjectNotFoundException( "No form definition found for key '" + formDefinitionKey + "' for parent deployment id '" + parentDeploymentId + "' and for tenant identifier " + tenantId, FormDefinitionEntity.class); } } else { throw new ActivitiObjectNotFoundException("formDefinitionKey and formDefinitionId are null"); } FormDefinitionCacheEntry formCacheEntry = deploymentManager.resolveFormDefinition(formDefinitionEntity); return formCacheEntry; } protected Map<String, JsonNode> fillPreviousFormInstanceValues( FormEngineConfiguration formEngineConfiguration) { Map<String, JsonNode> formInstanceMap = new HashMap<String, JsonNode>(); if (processInstanceId != null) { List<FormInstance> formInstances = formEngineConfiguration.getFormService().createFormInstanceQuery() .processInstanceId(processInstanceId).orderBySubmittedDate().desc().list(); for (FormInstance otherFormInstance : formInstances) { try { JsonNode submittedNode = formEngineConfiguration.getObjectMapper() .readTree(otherFormInstance.getFormValueBytes()); if (submittedNode == null || submittedNode.get("values") != null) { continue; } JsonNode valuesNode = submittedNode.get("values"); Iterator<String> fieldIdIterator = valuesNode.fieldNames(); while (fieldIdIterator.hasNext()) { String fieldId = fieldIdIterator.next(); if (formInstanceMap.containsKey(fieldId) == false) { JsonNode valueNode = valuesNode.get(fieldId); formInstanceMap.put(fieldId, valueNode); } } } catch (Exception e) { throw new ActivitiException("Error parsing form instance " + otherFormInstance.getId()); } } } return formInstanceMap; } public void fillVariablesWithFormInstanceValues(Map<String, JsonNode> formInstanceFieldMap, List<FormField> allFields) { for (FormField field : allFields) { JsonNode fieldValueNode = formInstanceFieldMap.get(field.getId()); if (fieldValueNode == null || fieldValueNode.isNull()) { continue; } String fieldType = field.getType(); String fieldValue = fieldValueNode.asText(); if (FormFieldTypes.DATE.equals(fieldType)) { try { if (StringUtils.isNotEmpty(fieldValue)) { LocalDate dateValue = LocalDate.parse(fieldValue); variables.put(field.getId(), dateValue); } } catch (Exception e) { logger.error("Error parsing form date value for process instance " + processInstanceId + " with value " + fieldValue, e); } } else { variables.put(field.getId(), fieldValue); } } } protected FormModel resolveFormModel(FormDefinitionCacheEntry formCacheEntry, CommandContext commandContext) { FormDefinitionEntity formEntity = formCacheEntry.getFormDefinitionEntity(); FormJsonConverter formJsonConverter = commandContext.getFormEngineConfiguration().getFormJsonConverter(); FormModel formDefinition = formJsonConverter.convertToFormModel(formCacheEntry.getFormDefinitionJson(), formEntity.getId(), formEntity.getVersion()); formDefinition.setId(formEntity.getId()); formDefinition.setName(formEntity.getName()); formDefinition.setKey(formEntity.getKey()); return formDefinition; } }