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.constant.SqlConsts;
019import com.mybatisflex.core.dialect.IDialect;
020import com.mybatisflex.core.util.ObjectUtil;
021import com.mybatisflex.core.util.StringUtil;
022
023import java.util.List;
024
025/**
026 * 操作类型的操作
027 * 示例1：and not ( id > 100 and name like %%)
028 */
029public class OperatorQueryCondition extends QueryCondition {
030
031    private final String operator;
032    private QueryCondition childCondition;
033
034    public OperatorQueryCondition(String operator, QueryCondition childCondition) {
035        this.operator = operator;
036        this.childCondition = childCondition;
037    }
038
039    public QueryCondition getChildCondition() {
040        return childCondition;
041    }
042
043    @Override
044    public String toSql(List<QueryTable> queryTables, IDialect dialect) {
045        StringBuilder sql = new StringBuilder();
046
047        //检测是否生效
048        if (checkEffective()) {
049            String childSql = childCondition.toSql(queryTables, dialect);
050            if (StringUtil.isNotBlank(childSql)) {
051                QueryCondition prevEffectiveCondition = getPrevEffectiveCondition();
052                if (prevEffectiveCondition != null && this.connector != null) {
053                    sql.append(this.connector);
054                }
055                sql.append(operator)
056                    .append(SqlConsts.BRACKET_LEFT)
057                    .append(childSql)
058                    .append(SqlConsts.BRACKET_RIGHT);
059            }
060        }
061
062        if (this.next != null) {
063            return sql + next.toSql(queryTables, dialect);
064        }
065
066        return sql.toString();
067    }
068
069    @Override
070    public Object getValue() {
071        return checkEffective() ? WrapperUtil.getValues(childCondition) : null;
072    }
073
074    @Override
075    boolean containsTable(String... tables) {
076        if (childCondition != null && childCondition.containsTable(tables)) {
077            return true;
078        }
079        return nextContainsTable(tables);
080    }
081
082    @Override
083    public OperatorQueryCondition clone() {
084        OperatorQueryCondition clone = (OperatorQueryCondition) super.clone();
085        // deep clone ...
086        clone.childCondition = ObjectUtil.clone(this.childCondition);
087        return clone;
088    }
089
090}