bpmn/MSOCoreBPMN/src/main/java/org/openecomp/mso/bpmn/core/mybatis/CustomMyBatisSessionFactory.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * OPENECOMP - MSO
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.openecomp.mso.bpmn.core.mybatis;
  22
  23 import java.io.InputStream;
  24 import java.util.ArrayList;
  25 import java.util.Collection;
  26 import java.util.List;
  27
  28 import org.camunda.bpm.engine.impl.cfg.ProcessEngineConfigurationImpl;
  29 import org.camunda.bpm.engine.impl.cfg.StandaloneProcessEngineConfiguration;
  30 import org.camunda.bpm.engine.impl.interceptor.CommandContextInterceptor;
  31 import org.camunda.bpm.engine.impl.interceptor.CommandInterceptor;
  32 import org.camunda.bpm.engine.impl.interceptor.LogInterceptor;
  33 import org.camunda.bpm.engine.impl.util.ReflectUtil;
  34
  35
  36 /**
  37  * A special process engine that provides access to MyBatis mappings.
  38  * @version 1.0
  39  */
  40 public class CustomMyBatisSessionFactory extends
  41                 StandaloneProcessEngineConfiguration {
  42
  43         private String resourceName;
  44
  45         /**
  46          * Overridden to ensure nobody ever tries to initialize this process engine
  47          * in the normal way.  We are using this process engine only for MyBatis
  48          * access.
  49          */
  50         @Override
  51         protected void init() {
  52                 throw new UnsupportedOperationException("init");
  53         }
  54
  55         /**
  56          * Initialize the ProcessEngineConfiguration from an existing one, just
  57          * using the database settings to initialize the database / MyBatis stuff.
  58          */
  59         public void initFromProcessEngineConfiguration(
  60                         ProcessEngineConfigurationImpl processEngineConfiguration,
  61                         String resourceName) {
  62                 this.resourceName = resourceName;
  63
  64                 setDatabaseType(processEngineConfiguration.getDatabaseType());
  65                 setDataSource(processEngineConfiguration.getDataSource());
  66                 setDatabaseTablePrefix(processEngineConfiguration
  67                                 .getDatabaseTablePrefix());
  68
  69                 initDataSource();
  70                 // initVariableTypes();
  71                 initCommandContextFactory();
  72                 initTransactionFactory();
  73                 initTransactionContextFactory();
  74                 initCommandExecutors();
  75                 initSqlSessionFactory();
  76                 initIncidentHandlers();
  77                 initIdentityProviderSessionFactory();
  78                 initSessionFactories();
  79         }
  80
  81         /**
  82          * In order to always open a new command context set the property
  83          * "alwaysOpenNew" to true inside the CommandContextInterceptor.
  84          *
  85          * If you execute the custom queries inside the process engine (for example
  86          * in a service task), you have to do this.
  87          */
  88         @Override
  89         protected Collection<? extends CommandInterceptor> getDefaultCommandInterceptorsTxRequired() {
  90                 List<CommandInterceptor> defaultCommandInterceptorsTxRequired =
  91                                 new ArrayList<CommandInterceptor>();
  92                 defaultCommandInterceptorsTxRequired.add(new LogInterceptor());
  93                 defaultCommandInterceptorsTxRequired.add(new CommandContextInterceptor(
  94                                 commandContextFactory, this, true));
  95                 return defaultCommandInterceptorsTxRequired;
  96         }
  97
  98         @Override
  99         protected InputStream getMyBatisXmlConfigurationSteam() {
 100                 return ReflectUtil.getResourceAsStream(resourceName);
 101         }
 102 }