net.ymate.platform.persistence.jdbc.AbstractDataSourceAdapter Maven / Gradle / Ivy
/*
* Copyright 2007-2107 the original author or authors.
*
* Licensed under the Apache 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.apache.org/licenses/LICENSE-2.0
*
* 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 net.ymate.platform.persistence.jdbc;
import java.sql.Connection;
import java.sql.SQLException;
import net.ymate.platform.commons.util.RuntimeUtils;
import net.ymate.platform.persistence.jdbc.base.dialect.IDialect;
import net.ymate.platform.persistence.jdbc.support.JdbcDataSourceCfgMeta;
/**
*
* AbstractDataSourceAdapter
*
*
* 数据源适配器接口抽象实现类；
*
*
* @author 刘镇([email protected])
* @version 0.0.0
*
*
* 版本号 动作 修改人 修改时间
*
*
*
* 0.0.0
* 创建类
* 刘镇
* 2013年8月1日下午8:30:34
*
*
*/
public abstract class AbstractDataSourceAdapter implements IDataSourceAdapter {
protected JdbcDataSourceCfgMeta cfgMeta;
protected IDialect dialect;
/* (non-Javadoc)
* @see net.ymate.platform.persistence.jdbc.IDataSourceAdapter#initialize(net.ymate.platform.persistence.jdbc.support.DataSourceCfgMeta)
*/
public void initialize(JdbcDataSourceCfgMeta cfgMeta) {
this.cfgMeta = cfgMeta;
}
/* (non-Javadoc)
* @see net.ymate.platform.persistence.jdbc.IDataSourceAdapter#getDialect()
*/
public IDialect getDialect() {
if (dialect == null) {
Connection _conn = null;
try {
_conn = this.getConnection();
String _prodName = _conn.getMetaData().getDatabaseProductName();
dialect = JDBC.getDialectClass(_prodName).newInstance();
} catch (Exception e) {
throw new Error(RuntimeUtils.unwrapThrow(e));
} finally {
if (_conn != null) {
try {
_conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
_conn = null;
}
}
}
return dialect;
}
/* (non-Javadoc)
* @see net.ymate.platform.persistence.jdbc.IDataSourceAdapter#destroy()
*/
public void destroy() {
this.cfgMeta = null;
this.dialect = null;
}
}