package com.vincent.rsf.framework.generators.utils;
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import com.vincent.rsf.framework.common.Cools;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import static java.sql.Types.*;
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/**
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* Created by vincent on 2019-06-18
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*/
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public class GeneratorUtils {
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public static final List<String> FILTER_FIELD = new ArrayList<String>(){{
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add("deleted");
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add("tenantId");
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add("createBy");
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add("createTime");
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add("updateBy");
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add("updateTime");
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}};
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/**
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* 下划线 ===>> 驼峰命名
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* @param smallHump 小驼峰命名
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*/
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public static String _convert(String str, boolean smallHump){
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String[] split = str.split("_");
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StringBuilder sb = new StringBuilder();
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for (int i=0;i<split.length;i++){
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sb.append(i==0&&smallHump?split[i]:split[i].substring(0, 1).toUpperCase()+split[i].substring(1));
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}
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return sb.toString();
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}
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public static String _convert(String str){
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return _convert(str, true);
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}
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// sql类型 ===>> java类型
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public static String getType(int type){
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switch (type){
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case BIT:
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return "Boolean";
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case TINYINT:
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return "Short";
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case SMALLINT:
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return "Short";
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case INTEGER:
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return "Integer";
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case BIGINT:
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return "Long";
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case DOUBLE:
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return "Double";
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case DECIMAL:
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return "Double";
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case NCHAR:
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return "String";
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case NVARCHAR:
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return "String";
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case CHAR:
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return "String";
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case VARCHAR:
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return "String";
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case DATE:
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return "Date";
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case TIMESTAMP:
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return "Date";
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case BLOB:
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return "String";
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case LONGVARCHAR:
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return "String";
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default:
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return null;
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}
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}
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// sql表名 ===>> 去前缀 大驼峰
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public static String getNameSpace(String tableName){
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String[] strings = tableName.split("_");
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StringBuilder sb = new StringBuilder();
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for (int i=1;i<strings.length;i++){
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if (i!=1){
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sb.append("_");
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}
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sb.append(strings[i]);
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}
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return _convert(sb.toString(), false);
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}
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// htmlDetail 字符适配
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public static String supportHtmlName(String comment){
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if (Cools.isEmpty(comment)){
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return "";
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}
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if (comment.length() == 2){
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return comment.charAt(0) + " " + comment.charAt(1);
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} else if (comment.length() == 3){
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return comment.charAt(0) + " " + comment.charAt(1) + " " +comment.charAt(2);
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}
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return comment;
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}
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/**
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* 获取mysql表字段长度
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*/
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public static Integer getColumnLength(String typeMsg){
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if (Cools.isEmpty(typeMsg)){
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return null;
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}
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Pattern pattern = Pattern.compile("(?<=\\()(.+?)(?=\\))");
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Matcher matcher = pattern.matcher(typeMsg);
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if (matcher.find()){
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String group = matcher.group();
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if (group.contains(",")) {
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group = group.split(",")[0];
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}
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return Integer.parseInt(group);
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}
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return null;
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}
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/**
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* 字符串首字母大小写转换
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* @param str 字符串
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* @param low true：小写 / false：大写
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* @return the result
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*/
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public static String firstCharConvert(String str, boolean low){
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if (Cools.isEmpty(str)){
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return "";
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}
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String firstChar = str.substring(0, 1);
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if (low){
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firstChar = firstChar.toLowerCase();
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} else {
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firstChar = firstChar.toUpperCase();
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}
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return firstChar + str.substring(1);
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}
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public static String firstCharConvert(String str){
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return firstCharConvert(str, true);
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}
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/** 驼峰转下划线 */
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public static String humpToLine(String str) {
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Matcher matcher = Pattern.compile("[A-Z]").matcher(str);
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StringBuffer sb = new StringBuffer();
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while (matcher.find()) {
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matcher.appendReplacement(sb, "_" + matcher.group(0).toLowerCase());
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}
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matcher.appendTail(sb);
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return sb.toString();
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}
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}
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