/**
    * Copyright 2005-2013 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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.kuali.rice.krad.app.persistence.jpa;
  
  import org.kuali.rice.core.framework.persistence.jpa.NullEntityManagerFactory;
  import org.kuali.rice.core.framework.persistence.jpa.OrmUtils;
  import org.springframework.beans.factory.FactoryBean;
  import org.springframework.beans.factory.InitializingBean;
  
  import javax.persistence.EntityManagerFactory;
  import javax.sql.DataSource;
  
  /**
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  public class RiceEntityManagerProxyFactoryBean implements FactoryBean, InitializingBean {
  
  	private RiceLocalContainerEntityManagerFactoryBean factoryBean;
  	private String prefix;
  	private DataSource datasource;
  	private String moduleJpaEnabledPropertyPrefix;
  	
  	public RiceEntityManagerProxyFactoryBean(String prefix, DataSource datasource) {
  		this.prefix = prefix;
  		this.datasource = datasource;
  		this.moduleJpaEnabledPropertyPrefix = prefix;
  	}
  		
  	public RiceEntityManagerProxyFactoryBean(String prefix, DataSource datasource, String moduleJpaEnabledPropertyPrefix) {
  		this.prefix = prefix;
  		this.datasource = datasource;
  		this.moduleJpaEnabledPropertyPrefix = moduleJpaEnabledPropertyPrefix;
  	}	
  
  	public void afterPropertiesSet() throws Exception {
  		if (OrmUtils.isJpaEnabled(moduleJpaEnabledPropertyPrefix)) {
  			factoryBean = new RiceLocalContainerEntityManagerFactoryBean(prefix, datasource);
  			factoryBean.afterPropertiesSet();
  		}
  	}
  	
  	public Class getObjectType() {
  		return (factoryBean != null ? factoryBean.getObjectType() : EntityManagerFactory.class);
  	}
  
  	public Object getObject() throws Exception {
  		return (factoryBean != null ? factoryBean.getObject() : new NullEntityManagerFactory());
  	}
  
  	public boolean isSingleton() {
  		return true;
  	}
  
  }