net.hasor.db.jdbc.lambda.Func Maven / Gradle / Ivy
/*
* Copyright 2002-2005 the original author or authors.
*
* 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 net.hasor.db.jdbc.lambda;
import net.hasor.db.dal.orm.FieldInfo;
import net.hasor.db.jdbc.page.Page;
import net.hasor.utils.reflect.SFunction;
import java.util.Collections;
import java.util.List;
import java.util.function.Predicate;
/**
* 条件构造器。
* @version : 2020-10-31
* @author 赵永春 ([email protected])
*/
public interface Func {
/**
* 查询指定列。
* 在分组查询下：返回所有分组列 */
public R selectAll();
/**
* 查询指定列。
* 在分组查询下：设置参数中，只有 group by 列才会被查询。 */
public R select(String... columns);
/**
* 查询指定列。
* 在分组查询下：设置参数中，只有 group by 列才会被查询。 */
public default R select(SFunction column) {
return select(Collections.singletonList(column));
}
/**
* 查询指定列。
* 在分组查询下：设置参数中，只有 group by 列才会被查询。 */
public R select(List> columns);
/**
* 按条件过滤查询指定列。
* 在分组查询下：设置参数中，只有 group by 列才会被查询。 */
public R select(Predicate tester);
/**分组，类似：group by xxx */
public default R groupBy(SFunction column) {
return groupBy(Collections.singletonList(column));
}
/**分组，类似：group by xxx */
public R groupBy(List> columns);
/** 排序，类似：order by xxx */
public default R orderBy(SFunction column) {
return orderBy(Collections.singletonList(column));
}
/** 排序，类似：order by xxx */
public R orderBy(List> columns);
/** 排序(升序)，类似：order by xxx desc */
public default R asc(SFunction column) {
return asc(Collections.singletonList(column));
}
/** 排序(升序)，类似：order by xxx desc */
public R asc(List> columns);
/** 排序(降序)，类似：order by xxx desc */
public default R desc(SFunction column) {
return desc(Collections.singletonList(column));
}
/** 排序(降序)，类似：order by xxx desc */
public R desc(List> columns);
/** 设置分页信息 */
public R usePage(Page pageInfo);
/** 获取对应的分页对象 */
public Page pageInfo();
/** 生成分页对象 */
public R initPage(int pageSize, int pageNumber);
}