/*
* 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.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import org.seasar.extension.dataset.DataRow;
import org.seasar.extension.dataset.states.RowStates;
import org.seasar.extension.jdbc.PropertyType;
import org.seasar.extension.jdbc.ResultSetHandler;
import org.seasar.extension.jdbc.impl.PropertyTypeUtil;
/**
* Reload用の {@link ResultSetHandler}です。
*
* @author higa
*
*/
public class DataRowReloadResultSetHandler implements ResultSetHandler {
private DataRow newRow;
/**
* {@link DataRowReloadResultSetHandler}を作成します。
*
* @param newRow
* 新しい行
*/
public DataRowReloadResultSetHandler(DataRow newRow) {
this.newRow = newRow;
}
/**
* 新しい行を返します。
*
* @return 新しい行
*/
public DataRow getNewRow() {
return newRow;
}
public Object handle(ResultSet rs) throws SQLException {
ResultSetMetaData rsmd = rs.getMetaData();
PropertyType[] propertyTypes = PropertyTypeUtil
.createPropertyTypes(rsmd);
if (rs.next()) {
reload(rs, propertyTypes);
}
return newRow;
}
private void reload(ResultSet rs, PropertyType[] propertyTypes)
throws SQLException {
for (int i = 0; i < propertyTypes.length; ++i) {
Object value = propertyTypes[i].getValueType().getValue(rs, i + 1);
newRow.setValue(propertyTypes[i].getColumnName(), value);
}
newRow.setState(RowStates.UNCHANGED);
}
}