src/persistence/org/codehaus/groovy/grails/orm/hibernate/metaclass/AbstractDynamicPersistentMethod.java

   1 /*
   2  * Copyright 2004-2005 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.codehaus.groovy.grails.orm.hibernate.metaclass;
  17
  18 import org.codehaus.groovy.grails.commons.metaclass.AbstractDynamicMethodInvocation;
  19 import org.hibernate.SessionFactory;
  20 import org.springframework.orm.hibernate3.HibernateTemplate;
  21 import org.springframework.util.Assert;
  22
  23 import java.util.regex.Pattern;
  24
  25 /**
  26  *
  27  *
  28  * @author Steven Devijver
  29  * @since Aug 7, 2005
  30  */
  31 public abstract class AbstractDynamicPersistentMethod extends
  32         AbstractDynamicMethodInvocation {
  33
  34     private SessionFactory sessionFactory = null;
  35     private ClassLoader classLoader = null;
  36
  37     public AbstractDynamicPersistentMethod(Pattern pattern, SessionFactory sessionFactory, ClassLoader classLoader) {
  38         super(pattern);
  39         this.sessionFactory = sessionFactory;
  40         this.classLoader = classLoader;
  41     }
  42
  43     protected HibernateTemplate getHibernateTemplate() {
  44         Assert.notNull(sessionFactory, "Session factory is required!");
  45         return new HibernateTemplate(this.sessionFactory);
  46     }
  47
  48     public Object invoke(Object target, String methodName, Object[] arguments) {
  49         ClassLoader originalClassLoader = Thread.currentThread().getContextClassLoader();
  50         Thread.currentThread().setContextClassLoader(this.classLoader);
  51         Object returnValue = doInvokeInternal(target, arguments);
  52         Thread.currentThread().setContextClassLoader(originalClassLoader);
  53         return returnValue;
  54     }
  55
  56     protected abstract Object doInvokeInternal(Object target, Object[] arguments);
  57
  58 }