com.github.yooryan.advancequery.toolkit.SqlParserUtils Maven / Gradle / Ivy

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This is a MyBaits plug-in that provides automatic build of advanced query.

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package com.github.yooryan.advancequery.toolkit;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * @author linyunrui
 */
public class SqlParserUtils {

    /**
     * 获取高级查询sql包装
     *
     * @param originalSql ignore
     * @return ignore
     */
    public static String getOriginalAdvanceQuerySql(String originalSql) {
        return String.format("SELECT * FROM ( %s ) temp", originalSql);
    }

    /**
     * 驼峰命名转换下划线
     */
    private static Pattern humpPattern = Pattern.compile("[A-Z]");
    public static String humpToLine(String str) {
        Matcher matcher = humpPattern.matcher(str);
        StringBuffer sb = new StringBuffer();
        while (matcher.find()) {
            matcher.appendReplacement(sb, "_" + matcher.group(0).toLowerCase());
        }
        matcher.appendTail(sb);
        return sb.toString();
    }
}