com.baomidou.mybatisplus.extension.plugins.pagination.dialects.XCloudDialect Maven / Gradle / Ivy

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An enhanced toolkit of Mybatis to simplify development.

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/*
 * Copyright (c) 2011-2023, baomidou ([email protected]).
 *
 * 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.extension.plugins.pagination.dialects;

import com.baomidou.mybatisplus.extension.plugins.pagination.DialectModel;

/**
 * XCloud 数据库分页语句组装实现
 *
 * @author huyang
 * @since 2022-04-13
 */
public class XCloudDialect implements IDialect {
    /**
     *
     * @param originalSql
     * @param offset
     * @param limit
     * @return
     */

    @Override
    public DialectModel buildPaginationSql(String originalSql, long offset, long limit) {
        StringBuilder sql = new StringBuilder(originalSql).append(" LIMIT ");
        if (offset != 0L) {
            sql.append(" ("+FIRST_MARK +","+SECOND_MARK+") ") ;
            return new DialectModel(sql.toString(), offset+1, offset+limit).setConsumerChain();
        } else {
            sql.append(FIRST_MARK);
            return new DialectModel(sql.toString(), limit).setConsumer(true);
        }
    }
}