Custom Data Models

Implementing the Custom Data Model service

Implement AlfrescoCustomDataModelService to manage operations such as insert, update, and select data in Custom Data Models.

interface: com.activiti.api.datamodel.AlfrescoCustomDataModelService

maven module: activiti-app-logic

To implement the AlfrescoCustomDataModelService interface:

1. Create an external class named AlfrescoCustomDataModelServiceImpl and add it to the classpath.

   Note that it should be in a package that can be scanned, such as com.activiti.extension.bean.

2. Implement the class as follows:

   package com.activiti.extension.bean;
   
   import java.util.List;
   
   import org.springframework.beans.factory.annotation.Autowired;
   import org.springframework.stereotype.Service;
   
   import com.activiti.api.datamodel.AlfrescoCustomDataModelService;
   import com.activiti.model.editor.datamodel.DataModelDefinitionRepresentation;
   import com.activiti.model.editor.datamodel.DataModelEntityRepresentation;
   import com.activiti.runtime.activiti.bean.datamodel.AttributeMappingWrapper;
   import com.activiti.variable.VariableEntityWrapper;
   import com.fasterxml.jackson.databind.ObjectMapper;
   import com.fasterxml.jackson.databind.node.ObjectNode;
   
   @Service
   public class AlfrescoCustomDataModelServiceImpl implements AlfrescoCustomDataModelService {
   
       @Autowired
       protected ObjectMapper objectMapper;
   
       @Override
       public String storeEntity(List<AttributeMappingWrapper> attributeDefinitionsAndValues, DataModelEntityRepresentation entityDefinition,
               DataModelDefinitionRepresentation dataModel) {
           // save entity data and return entity id
       }
   
       @Override
       public ObjectNode getMappedValue(DataModelEntityRepresentation entityValue, String mappedName, Object variableValue) {
           // fetch entity data and return as an ObjectNode
       }
   
       @Override
       public VariableEntityWrapper getVariableEntity(String keyValue, String variableName, String processDefinitionId, DataModelEntityRepresentation entityValue) {
           // fetch entity data and return as a VariableEntityWrapper
       }
   
   }

This implementation of AlfrescoCustomDataModelServiceImpl class is called, for example, when a select, insert, or update operation on a custom data model is performed.