com.ihelin.book.db.plugin.MySQLDialect.java Source code

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Here is the source code for com.ihelin.book.db.plugin.MySQLDialect.java

Source

/*
 * Copyright (c) 2012 duowan.com.
 *
 * All Rights Reserved.
 *
 * This program is the confidential and proprietary information of
 * duowan. ("Confidential Information").  You shall not disclose such
 * Confidential Information and shall use it only in accordance with
 * the terms of the license agreement you entered into with duowan.com.
 */
package com.ihelin.book.db.plugin;

import org.apache.commons.lang3.StringUtils;

/**
 * @author hecong
 */
public class MySQLDialect extends Dialect {

    public boolean supportsLimitOffset() {
        return true;
    }

    public boolean supportsLimit() {
        return true;
    }

    public String getLimitString(String sql, int offset, String offsetPlaceholder, int limit,
            String limitPlaceholder) {
        String limitStr = StringUtils.EMPTY;
        if (StringUtils.isNotBlank(sql)) {
            limitStr = sql + DEF_SQL_LIMIT;
            if (offset > 0) {
                limitStr += offsetPlaceholder + DEF_SQL_LIMIT_CONNECTOR + limitPlaceholder;
            } else {
                limitStr += limitPlaceholder;
            }
        }
        return limitStr;
    }
}