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package org.appfuse.dao;

import org.apache.commons.beanutils.BeanUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.SessionFactory;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.AbstractTransactionalJUnit4SpringContextTests;

import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
import org.hibernate.Session;
import org.hibernate.search.FullTextSession;
import org.hibernate.search.Search;

/**
 * Base class for running DAO tests.
 *
 * @author Matt Raible
 * @author jgarcia (updated: migrate to hibernate 4; moved from compass-search to hibernate-search
 */
@ContextConfiguration(
        locations = {"classpath:/applicationContext-resources.xml",
                "classpath:/applicationContext-dao.xml",
                "classpath*:/applicationContext.xml",
                "classpath:**/applicationContext*.xml"})
public abstract class BaseDaoTestCase extends AbstractTransactionalJUnit4SpringContextTests {
    @Autowired
    private SessionFactory sessionFactory;

    /**
     * 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;

    /**
     * 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.trace("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(final Object obj) throws Exception {
        // loop through all the beans methods and set its properties from its .properties file
        Map map = new HashMap();

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

        BeanUtils.copyProperties(obj, map);

        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.
     *
     * @throws org.springframework.beans.BeansException
     *          when can't find 'sessionFactory' bean
     */
    protected void flush() throws BeansException {
        Session currentSession = sessionFactory.getCurrentSession();
        currentSession.flush();
    }

    /**
     * Flush search indexes, to be done after a reindex() or reindexAll() operation
     */
    public void flushSearchIndexes() {
        Session currentSession = sessionFactory.getCurrentSession();
        final FullTextSession fullTextSession = Search.getFullTextSession(currentSession);
        fullTextSession.flushToIndexes();
    }
}




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