org.dromara.hutool.db.handler.EntitySetHandler 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;
import org.dromara.hutool.db.Entity;
import org.dromara.hutool.db.handler.row.EntityRowHandler;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.LinkedHashSet;
/**
* 结果集处理类 ,处理出的结果为Entity列表,结果不能重复(按照Entity对象去重)
* @author loolly
*
*/
public class EntitySetHandler implements RsHandler>{
private static final long serialVersionUID = 8191723216703506736L;
/** 是否大小写不敏感 */
private final boolean caseInsensitive;
/**
* 创建一个 EntityHandler对象
* @return EntityHandler对象
*/
public static EntitySetHandler of() {
return new EntitySetHandler();
}
/**
* 构造
*/
public EntitySetHandler() {
this(false);
}
/**
* 构造
*
* @param caseInsensitive 是否大小写不敏感
*/
public EntitySetHandler(final boolean caseInsensitive) {
this.caseInsensitive = caseInsensitive;
}
@Override
public LinkedHashSet handle(final ResultSet rs) throws SQLException {
final EntityRowHandler rowHandler =
new EntityRowHandler(rs.getMetaData(), caseInsensitive, true);
final LinkedHashSet result = new LinkedHashSet<>();
while (rs.next()){
result.add(rowHandler.handle(rs));
}
return result;
}
}