/*
 * Copyright (c) 2011-2024, baomidou (jobob@qq.com).
 *
 * 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 com.baomidou.mybatisplus.core.enums;


import com.baomidou.mybatisplus.core.conditions.ISqlSegment;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import lombok.AllArgsConstructor;

/**
 * SQL 保留关键字枚举
 *
 * @author hubin
 * @since 2018-05-28
 */
@AllArgsConstructor
public enum SqlKeyword implements ISqlSegment {
    AND("AND"),
    OR("OR"),
    NOT("NOT"),
    IN("IN"),
    NOT_IN("NOT IN"),
    LIKE("LIKE"),
    NOT_LIKE("NOT LIKE"),
    EQ(StringPool.EQUALS),
    NE("<>"),
    GT(StringPool.RIGHT_CHEV),
    GE(">="),
    LT(StringPool.LEFT_CHEV),
    LE("<="),
    IS_NULL("IS NULL"),
    IS_NOT_NULL("IS NOT NULL"),
    GROUP_BY("GROUP BY"),
    HAVING("HAVING"),
    ORDER_BY("ORDER BY"),
    EXISTS("EXISTS"),
    NOT_EXISTS("NOT EXISTS"),
    BETWEEN("BETWEEN"),
    NOT_BETWEEN("NOT BETWEEN"),
    ASC("ASC"),
    DESC("DESC");

    private final String keyword;

    @Override
    public String getSqlSegment() {
        return this.keyword;
    }
}
