sqlmaplocator.java

以前做的一个j2ee的项目

package gov.gdlt.ssgly.taxcore.comm.servicelocator;

import com.ibatis.common.resources.Resources;
import com.ibatis.sqlmap.client.SqlMapClient;
import com.ibatis.sqlmap.client.SqlMapClientBuilder;
import gov.gdlt.ssgly.taxcore.comm.config.ApplicationContext;
import java.io.Reader;
import java.io.IOException;


/**
 * Service Locator模式的实现，提供获取SqlMapClient对象的方法。
 *
 * <p>Title: SqlMapLocator</p>
 * <p>Description: 税收管理员系统</p>
 * <p>Copyright: Copyright (c) 2005 广州市地方税务局</p>
 * <p>Company: 信息中心</p>
 * @author Lemon
 * @version 1.0
 * @since 2005.8.8.
 */

public class SqlMapLocator {
    private static SqlMapLocator instance;
    private SqlMapClient sqlMap;

    private SqlMapLocator() {
        Reader reader = null;
        try {
            reader = Resources.getResourceAsReader(ApplicationContext.
                    SQLMAP_CONFIG_FILENAME);
        } catch (IOException ex) {
            System.err.println("Error: SqlMap config file cannot be found or read.");
            ex.printStackTrace();
        }
        sqlMap = SqlMapClientBuilder.buildSqlMapClient(reader);
    }

    public static SqlMapLocator getInstance() {
        if (instance == null) {
            instance = new SqlMapLocator();
        }
        return instance;
    }

    public SqlMapClient getSqlMapClient() {
        return sqlMap;
    }
}