UtilsSql.java
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package com.taover.repository;
import java.util.HashMap;
import java.util.Map;
import org.springframework.util.StringUtils;
public class UtilsSql {
/**
* 获取排序字符串
* @param sort
* @param order
* @param columnPreffix
* @return
*/
public static String getSortCondition(String sort, String order, String columnPreffix){
String underScoreSort = UtilsString.underscoreName(sort).toLowerCase();
if(StringUtils.isEmpty(columnPreffix)){
columnPreffix = "";
}
String sortCondition = " ";
if(!StringUtils.isEmpty(underScoreSort)){
sortCondition = " order by ";
String[] sortArr = underScoreSort.split(",");
if(StringUtils.isEmpty(order)){
sortCondition += columnPreffix+sortArr[0]+" DESC ";
for(int i=1; i<sortArr.length; ++i){
sortCondition += ","+columnPreffix+sortArr[i]+" DESC ";
}
}else{
String[] orderArr = order.split(",");
sortCondition += sortArr[0]+" "+orderArr[0]+" ";
for(int i=1; i<sortArr.length; ++i){
if(i < orderArr.length){
sortCondition = ","+columnPreffix+sortArr[i]+" "+orderArr[i]+" ";
}else{
sortCondition = ","+columnPreffix+sortArr[i]+" DESC ";
}
}
}
}
return sortCondition;
}
/**
* 获取分页
* @param sort
* @param order
* @param columnPreffix
* @return
*/
public static String getLimitCondition(int page, int pageSize){
String sql = "";
if(page < -1){
page = 0;
if(pageSize < 1){
pageSize = 0;
}
sql += " limit "+pageSize*(page-1)+","+pageSize;
}else if(page == -1){
sql = "";
}else{
if(pageSize < 1){
pageSize = 0;
}
sql += " limit "+pageSize*(page-1)+","+pageSize;
}
return sql;
}
/**
* 创建分页返回
* @param page
* @param rows
* @param data
* @return
*/
public static Map<String, Object> createPage(int page, int rows, Object data){
Map<String, Object> pageData = new HashMap<String, Object>();
pageData.put("page", page);
pageData.put("rows", rows);
pageData.put("data", data);
return pageData;
}
}