org.dromara.hutool.db.handler.row.ArrayRowHandler Maven / Gradle / Ivy
/*
* Copyright (c) 2013-2024 Hutool Team and hutool.cn
*
* 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.dromara.hutool.db.handler.row;
import org.dromara.hutool.core.array.ArrayUtil;
import org.dromara.hutool.db.handler.ResultSetUtil;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
/**
* 将{@link ResultSet}结果中的某行处理为数组
*
* @param 数组元素类型
* @author looly
*/
public class ArrayRowHandler extends AbsRowHandler {
private final Class componentType;
/**
* 构造
*
* @param meta {@link ResultSetMetaData}
* @param componentType 数组元素类型
* @throws SQLException SQL异常
*/
public ArrayRowHandler(final ResultSetMetaData meta, final Class componentType) throws SQLException {
super(meta);
this.componentType = componentType;
}
@SuppressWarnings("unchecked")
@Override
public E[] handle(final ResultSet rs) throws SQLException {
final E[] result = ArrayUtil.newArray(componentType, columnCount);
for (int i = 0, j = 1; i < columnCount; i++, j++) {
result[i] = (E) ResultSetUtil.getColumnValue(rs, j, meta.getColumnType(j), componentType);
}
return result;
}
}