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   1 /*
   2  * Copyright 2008 the original author or authors.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.wamblee.system.spring.component;
  17
  18 import java.io.IOException;
  19 import java.util.HashMap;
  20 import java.util.Map;
  21 import java.util.Properties;
  22
  23 import javax.sql.DataSource;
  24
  25 import org.hibernate.SessionFactory;
  26 import org.hibernate.dialect.DerbyDialect;
  27 import org.hibernate.dialect.MySQLInnoDBDialect;
  28 import org.springframework.orm.hibernate3.HibernateTemplate;
  29 import org.springframework.transaction.PlatformTransactionManager;
  30 import org.wamblee.persistence.hibernate.HibernateMappingFiles;
  31 import org.wamblee.system.components.ORMappingConfig;
  32 import org.wamblee.system.components.ORMappingConfig.DatabaseType;
  33 import org.wamblee.system.core.DefaultProvidedInterface;
  34 import org.wamblee.system.core.DefaultRequiredInterface;
  35 import org.wamblee.system.core.ProvidedInterface;
  36 import org.wamblee.system.core.RequiredInterface;
  37 import org.wamblee.system.core.Scope;
  38 import org.wamblee.system.spring.SpringComponent;
  39
  40 public class HibernateComponent extends SpringComponent {
  41
  42     private static final String HIBERNATE_DIALECT_PROP = "hibernate.dialect";
  43     private static final String HIBERNATE_SCHEMAUPDATE_PROP = "hibernate.schemaupdate";
  44     private static final String HIBERNATE_PROPS_KEY = "hibernateProperties";
  45     private static final String HIBERNATE_SPRING_CONFIG = "spring/org.wamblee.system.spring.component.hibernate.xml";
  46
  47     private final RequiredInterface CONFIG = new DefaultRequiredInterface("config", ORMappingConfig.class);
  48
  49     public HibernateComponent(String aName) throws IOException {
  50         super(aName, new String[] { HIBERNATE_SPRING_CONFIG},
  51                 createProvided(), createRequired());
  52
  53         Properties props = new Properties();
  54         addProperties(HIBERNATE_PROPS_KEY, props);
  55
  56         addRequiredInterface(CONFIG);
  57     }
  58
  59     @Override
  60     protected Scope doStart(Scope aExternalScope) {
  61
  62         ORMappingConfig config = aExternalScope.getInterfaceImplementation(CONFIG.getProvider(), ORMappingConfig.class);
  63         setProperty(HIBERNATE_SCHEMAUPDATE_PROP, "" + config.isSchemaUpdate());
  64
  65         DatabaseType db = config.getType();
  66         String dialect = db.handleCases(new DatabaseType.Switch<String>() {
  67             @Override
  68             public String handleMySqlInnoDb() {
  69                 return MySQLInnoDBDialect.class.getName();
  70             }
  71             @Override
  72             public String handleDerby() {
  73                 return DerbyDialect.class.getName();
  74             }
  75         });
  76         getHibernateProperties().put(HIBERNATE_DIALECT_PROP, dialect);
  77
  78
  79         return super.doStart(aExternalScope);
  80     }
  81
  82     private Properties getHibernateProperties() {
  83         return getProperties(HIBERNATE_PROPS_KEY);
  84     }
  85
  86     private static Map<RequiredInterface, String> createRequired() {
  87         Map<RequiredInterface,String> required = new HashMap<RequiredInterface, String>();
  88         required.put(new DefaultRequiredInterface("datasource", DataSource.class), "dataSource");
  89         required.put(new DefaultRequiredInterface("mappingFiles", HibernateMappingFiles.class),
  90                 "hibernateMappingFiles");
  91         return required;
  92     }
  93
  94     private static Map<String, ProvidedInterface> createProvided() {
  95         Map<String,ProvidedInterface> provided = new HashMap<String,ProvidedInterface>();
  96
  97         provided.put("transactionManager", new DefaultProvidedInterface(
  98                 "transactionMgr", PlatformTransactionManager.class));
  99         provided.put("sessionFactory", new DefaultProvidedInterface(
 100                 "sessionFactory", SessionFactory.class));
 101         provided.put("org.springframework.orm.hibernate3.HibernateTemplate", new DefaultProvidedInterface(
 102                 "hibernateTemplate", HibernateTemplate.class));
 103         return provided;
 104     }
 105 }