basedaotestcase.java

利用STRUTS2+SPRING+HIBERNATE/IBATIS建立的基本开发框架

package test.com.sunwah.baseapp.dao;

import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.MissingResourceException;
import java.util.ResourceBundle;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.SessionFactory;
import org.springframework.beans.BeanUtils;
import org.springframework.orm.hibernate3.HibernateTemplate;
import org.springframework.test.AbstractTransactionalDataSourceSpringContextTests;

/**
 * Base class for running DAO tests.
 * 
 * @author mraible
 */
public abstract class BaseDaoTestCase extends
		AbstractTransactionalDataSourceSpringContextTests {
	/**
	 * Log variable for all child classes. Uses LogFactory.getLog(getClass())
	 * from Commons Logging
	 */
	protected final Log log = LogFactory.getLog(getClass());
	/**
	 * ResourceBundle loaded from
	 * src/test/resources/${package.name}/ClassName.properties (if exists)
	 */
	protected ResourceBundle rb;

	/**
	 * Sets AutowireMode to AUTOWIRE_BY_NAME and configures all context files
	 * needed to tests DAOs.
	 * 
	 * @return String array of Spring context files.
	 */
	protected String[] getConfigLocations() {
		setAutowireMode(AUTOWIRE_BY_NAME);
		return new String[] { "applicationContext.xml",
				"applicationContext-datasource.xml",
				"applicationContext-dao.xml" };
	}

	/**
	 * Default constructor - populates "rb" variable if properties file exists
	 * for the class in src/test/resources.
	 */
	public BaseDaoTestCase() {
		// Since a ResourceBundle is not required for each class, just
		// do a simple check to see if one exists
		String className = this.getClass().getName();

		try {
			rb = ResourceBundle.getBundle(className);
		} catch (MissingResourceException mre) {
			// log.warn("No resource bundle found for: " + className);
		}
	}

	/**
	 * Utility method to populate a javabean-style object with values from a
	 * Properties file
	 * 
	 * @param obj
	 *            the model object to populate
	 * @return Object populated object
	 * @throws Exception
	 *             if BeanUtils fails to copy properly
	 */
	protected Object populate(Object obj) throws Exception {
		// loop through all the beans methods and set its properties from its
		// .properties file
		Map<String, String> map = new HashMap<String, String>();

		for (Enumeration<String> keys = rb.getKeys(); keys.hasMoreElements();) {
			String key = keys.nextElement();
			map.put(key, rb.getString(key));
		}

		BeanUtils.copyProperties(map, obj);

		return obj;
	}

	/**
	 * Create a HibernateTemplate from the SessionFactory and call flush() and
	 * clear() on it. Designed to be used after "save" methods in tests:
	 * http://issues.appfuse.org/browse/APF-178.
	 */
	protected void flush() {
		HibernateTemplate hibernateTemplate = new HibernateTemplate(
				(SessionFactory) applicationContext.getBean("sessionFactory"));
		hibernateTemplate.flush();
		hibernateTemplate.clear();
	}
}