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 */
016package com.mybatisflex.core.query;
017
018import com.mybatisflex.core.dialect.IDialect;
019import com.mybatisflex.core.util.SqlUtil;
020import com.mybatisflex.core.util.StringUtil;
021
022import java.util.List;
023
024public class SelectQueryColumn extends QueryColumn implements HasParamsColumn {
025
026    private QueryWrapper queryWrapper;
027
028    public SelectQueryColumn(QueryWrapper queryWrapper) {
029        this.queryWrapper = queryWrapper;
030    }
031
032    @Override
033    public SelectQueryColumn as(String alias) {
034        SqlUtil.keepColumnSafely(alias);
035        this.alias = alias;
036        return this;
037    }
038
039    QueryWrapper getQueryWrapper() {
040        return queryWrapper;
041    }
042
043    @Override
044    String toSelectSql(List<QueryTable> queryTables, IDialect dialect) {
045        String selectSql = dialect.forSelectByQuery(queryWrapper);
046        if (StringUtil.isNotBlank(selectSql) && StringUtil.isNotBlank(alias)) {
047            selectSql = "(" + selectSql + ") AS " + dialect.wrap(alias);
048        }
049        return selectSql;
050    }
051
052    @Override
053    String toConditionSql(List<QueryTable> queryTables, IDialect dialect) {
054        return super.toConditionSql(queryTables, dialect);
055    }
056
057    @Override
058    public Object[] getParamValues() {
059        return queryWrapper.getValueArray();
060    }
061}