001/*
002 *  Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
003 *  <p>
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *  <p>
008 *  http://www.apache.org/licenses/LICENSE-2.0
009 *  <p>
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016
017package com.mybatisflex.core.activerecord.query;
018
019import com.mybatisflex.core.query.CPI;
020import com.mybatisflex.core.query.Join;
021import com.mybatisflex.core.query.QueryCondition;
022import com.mybatisflex.core.query.RawQueryCondition;
023
024/**
025 * Lambda joins 构建器。
026 *
027 * @author 王帅
028 * @since 2023-07-28
029 */
030public class JoinBuilder<R extends QueryModel<R>> {
031
032    private final R queryModel;
033    private final Join join;
034
035    public JoinBuilder(R queryModel, Join join) {
036        this.queryModel = queryModel;
037        this.join = join;
038    }
039
040    public JoinBuilder<R> as(String alias) {
041        CPI.getJoinQueryTable(join).as(alias);
042        return this;
043    }
044
045    public R on(String on) {
046        join.on(new RawQueryCondition(on));
047        return queryModel;
048    }
049
050    public R on(QueryCondition on) {
051        join.on(on);
052        return queryModel;
053    }
054
055}