/*
* 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.jdbc.impl;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import org.seasar.extension.jdbc.PropertyType;
import org.seasar.extension.jdbc.ResultSetHandler;
import org.seasar.extension.jdbc.ValueType;
import org.seasar.extension.jdbc.types.ValueTypes;
import org.seasar.framework.beans.BeanDesc;
import org.seasar.framework.beans.PropertyDesc;
import org.seasar.framework.beans.factory.BeanDescFactory;
import org.seasar.framework.util.ClassUtil;
import org.seasar.framework.util.StringUtil;
/**
* JavaBeans用の {@link ResultSetHandler}の抽象クラスです。
*
* @author higa
*
*/
public abstract class AbstractBeanResultSetHandler implements ResultSetHandler {
private Class beanClass;
private BeanDesc beanDesc;
/**
* {@link AbstractBeanResultSetHandler}を作成します。
*
* @param beanClass
* Beanクラス
*/
public AbstractBeanResultSetHandler(Class beanClass) {
setBeanClass(beanClass);
}
/**
* Beanクラスを返します。
*
* @return Beanクラス
*/
public Class getBeanClass() {
return beanClass;
}
/**
* Beanクラスを設定します。
*
* @param beanClass
* Beanクラス
*/
public void setBeanClass(Class beanClass) {
this.beanClass = beanClass;
beanDesc = BeanDescFactory.getBeanDesc(beanClass);
}
/**
* プロパティの型の配列を作成します。
*
* @param rsmd
* 結果セットメタデータ
* @return プロパティの型の配列
* @throws SQLException
* SQL例外が発生した場合
*/
protected PropertyType[] createPropertyTypes(ResultSetMetaData rsmd)
throws SQLException {
int count = rsmd.getColumnCount();
PropertyType[] propertyTypes = new PropertyType[count];
for (int i = 0; i < count; ++i) {
String columnName = rsmd.getColumnLabel(i + 1);
String propertyName = StringUtil.replace(columnName, "_", "");
PropertyDesc propertyDesc = beanDesc.getPropertyDesc(propertyName);
ValueType valueType = ValueTypes.getValueType(propertyDesc
.getPropertyType());
propertyTypes[i] = new PropertyTypeImpl(propertyDesc, valueType,
columnName);
}
return propertyTypes;
}
/**
* 行を作成します。
*
* @param rs
* 結果セット
* @param propertyTypes
* プロパティの型の配列
* @return 行
* @throws SQLException
* SQL例外が発生した場合
*/
protected Object createRow(ResultSet rs, PropertyType[] propertyTypes)
throws SQLException {
Object row = ClassUtil.newInstance(beanClass);
for (int i = 0; i < propertyTypes.length; ++i) {
PropertyType pt = propertyTypes[i];
ValueType valueType = pt.getValueType();
Object value = valueType.getValue(rs, i + 1);
PropertyDesc pd = pt.getPropertyDesc();
pd.setValue(row, value);
}
return row;
}
}