dbexecutorfactory.java

羽量级数据持久层开发框架

package org.speedframework.db.executor;

//~--- JDK imports ------------------------------------------------------------

import java.util.Hashtable;

/**
 *  类描述信息，描述类的主要职责和用处。
 *
 *
 * @version    $LastChangedRevision: 1945 $, 2007.09.29 at 02:14:24 CST
 * @author     <a href="mailto:[e-mail]">piginzoo </a>
 */
public class DBExecutorFactory
 {

    /** 属性描述信息 */
    private static Hashtable cacheExecutor = new Hashtable();

    /**
     * Constructs ...
     *
     */
    private DBExecutorFactory() {}

    /**
     * 方法描述信息，
     * 描述方法是做什么的，
     * 如何调用，最好给出调用代码示例。
     *
     * @param dbType
     *
     * @return
     *
     * @throws Exception
     */
    public static synchronized DBExecutor getExecutor(String dbType) throws Exception {
        DBExecutor executor = (DBExecutor) cacheExecutor.get(dbType);

        if (executor == null) {
            if (dbType.startsWith("mysql")) {
                executor = new MySQLDBExecutor();
            }

            cacheExecutor.put(dbType, executor);
        }

        return executor;
    }
}