/*
* Copyright 2004-2015 the Seasar Foundation and the Others.
*
* 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 org.seasar.extension.dataset.impl;
import java.sql.Connection;
import javax.sql.DataSource;
import org.seasar.extension.dataset.DataRow;
import org.seasar.extension.dataset.DataTable;
import org.seasar.extension.dataset.RowState;
import org.seasar.extension.dataset.TableWriter;
import org.seasar.extension.jdbc.util.ConnectionUtil;
import org.seasar.extension.jdbc.util.DataSourceUtil;
/**
* SQL用の {@link TableWriter}です。
*
* @author higa
*
*/
public class SqlTableWriter implements TableWriter {
private DataSource dataSource;
/**
* {@link SqlTableWriter}を作成します。
*
* @param dataSource
* データソース
*/
public SqlTableWriter(DataSource dataSource) {
this.dataSource = dataSource;
}
/**
* データソースを返します。
*
* @return データソース
*/
public DataSource getDataSource() {
return dataSource;
}
public void write(DataTable table) {
if (!table.hasMetaData()) {
setupMetaData(table);
}
doWrite(table);
}
/**
* データを書き込みます。
*
* @param table
* テーブル
*/
protected void doWrite(DataTable table) {
for (int i = 0; i < table.getRowSize(); ++i) {
DataRow row = table.getRow(i);
RowState state = row.getState();
state.update(dataSource, row);
}
}
private void setupMetaData(DataTable table) {
Connection con = DataSourceUtil.getConnection(dataSource);
try {
table.setupMetaData(ConnectionUtil.getMetaData(con));
} finally {
ConnectionUtil.close(con);
}
}
}