/*類機制定義*/
window.Class = function(name, src) {
src.constructor.prototype = src;
window[name] = src.constructor;
};
/*自定義類*/
Class("ArrayUtils", {
constructor: function() {
},
toArray : function(iterable) {
var length = iterable.length, results = new Array(length);
while (length--) { results[length] = iterable[length] };
return results;
},
camelize : function(s) {
return s.replace(/\-(.)/g, function(m, l){return l.toUpperCase()});
},
inArray : function(arr,item) {
return (this.search(arr,item) != null);
},
search : function(arr,itm) {
for(var i=0; i 100000){
this.items.shift();
}
},
remove : function(item){
var s = [];
//移除item，然後遍歷，把剩下發的賦值給items
for(var i = 0, len = this.items.length; i =,,between and
* SQL:= TB2.REF_CITY_CODE = '1' AND TB3.REF_REGION_CODE IN (select * from aaa)
* 【建議把in的用括號包含】 TB2.REF_CITY_CODE = '1' AND (TB3.REF_REGION_CODE IN (select * from aaa) )
*
* HAVING和WHERE的處理方式是一樣的HAVING SUM(TB1.PAY_MONEY)0
* where中有聚合函數TB2.REF_CITY_CODE = '1' and sum(TB2.REF_CITY_CODE)
*
* 【建議把between and用括號包含，要不然就拆成2個大於小於】
* TB2.REF_CITY_CODE between 21 and 44可以改成2個TB2.REF_CITY_CODE> 21 and TB2.REF_CITY_CODE200-----建議使用別名，不要把聚合函數放到where裏面
*
* select a,b from (select a,b, sum(aa) as c from table1 where c > 100 )
*
*
*
* 目前還不支持一個長括號裏面有評級的，能取出來，但是不能替換
*
*
*
* minCell--minCellCopy[相同的()的已被替換成'@',],然後對minCellCopy[i]進行分詞即可
*
*
*/
Class("WhereParser", {
constructor: function() {
// this.key = key;//可能處理類型，key:[where|having]
this.items = [];
this.myStack = new Stack();//上面有定義
this.inputString = '';//需要解析的字符串
this.logicOperatorKey = ['and','or','in'];//邏輯運算符，報表中where的關鍵字分隔符：and ，or 和 in
this.argoOperatorKey = ['=',''];//算數運算符=，>=,
this.exceptOperatorKey = ['between'];//特殊處理between and
this.dataObject =new Array();//對象數組，準備放對象的 {field , op , value}
this.logicOpArray = [];
this.opArray = [];
this.typeArray = [];
},
getDataObject:function(){
return this.dataObject;
},
getLogicOpArray:function(){
return this.logicOpArray;
},
getOpArray:function(){
return this.opArray;
},
getTypeArray:function(){
return this.typeArray;
},
trim: function( text ) {
var rtrim = /^(\s|\u00A0)+|(\s|\u00A0)+$/g;
return (text || "").replace( rtrim, "" );
},
/*判斷是否存在此關鍵字key，type取值{l是邏輯運算符，a是算數運算符}*/
hasKey : function(type,key){
var arrayUtils = new ArrayUtils();
if(type == 'l'){
return arrayUtils.inArray(this.logicOperatorKey,key);
}
if(type == 'a'){
return arrayUtils.inArray(this.argoOperatorKey,key);
}
},
/*設置要解析的字符串*/
setParseString : function(inputString){
this.inputString = inputString;
//document.write( "輸入字符串："+this.inputString+"
");
return this;//鏈式操作
},
/*
*/
process : function(){
var myString = this.inputString;
//document.write("匹對過程
");
//最小計算單元內的左括號個數，當棧的總和爲0，此數歸0
var leftCount=0;
//傀儡，只爲存放一個char，其實可以不用
var dummy = new Array();
//this.msg(this.inputString.length);
var stackString = "";//只存放棧中完整的字符
var stackStartFlag = false;
var wordString = "";
var wordChar = "";
for(var i =0;i<mystring.length i count dummy if>0){
//遇到空格，分詞 -------下一個字符不是算數運算符
if(dummy[i-1]==' '&&this.hasKey('a',dummy[i])==false){
//遇空則清
wordString = "";
}
wordString = wordString + dummy[i];
if(dummy[i]==' '&&wordString.length>1&&this.myStack.getCount()==0){
var wordString = this.trim(wordString);
if(wordString=='AND' || wordString=='OR'){
this.logicOpArray.push(wordString);
}else{
//顯示不是and和or的
//alert(wordString);
this.dataObject.push(wordString);
}
}
}
if(stackStartFlag){
stackString = stackString+dummy[i];
}
//當'('的時候入棧,記下位置
if(dummy[i]=='('){
this.myStack.add(i);
if(leftCount==0){
//alert("開始啦");
stackString = "(";
stackStartFlag = true;
}
leftCount++;
this.count++;
}
//當')'的時候出棧
if(dummy[i]==')'){
var before = this.myStack.next();
var current = i+1;
var str = myString.substring(before,current);
leftCount--;
if(leftCount==0){
//alert("結束啦");
//this.dataObject.push(stackString);
stackStartFlag = false;
}
if(this.myStack.getCount()==0){
wordString = stackString;
//recureProcessing(wordString);
}
document.write("leftCount:="+leftCount+" result="+str+"<hr>");
var bStr = myString.substring(0,before);
var aStr = myString.substring(current,myString.length);
var finalStr = bStr + "@" + aStr;
//alert(aStr.length);
if(leftCount>0){
//myStr=myStr.replace(me+'',' ');
if(aStr.length");
// document.write( "<font color="red">this.dataObject："+this.dataObject.length+"個</font><br>");
// document.write("<br>"+this.inputString+"<br>"+"<br>");
var op ="";
for(var i =0;i ")>-1){
op=">";
}
if(s.indexOf("-1){
op="-1){
op="=";
}
if(s.indexOf(">=")>-1){
op=">=";
}
if(s.indexOf("-1){
op="")>-1){
op="";
}
var type = "number" ;
if(s.indexOf("'")>-1){
type="string";
}
// if(s.indexOf(" OR ")>-1){
// logicOp="and";
// }
//
this.typeArray.push(type);
this.opArray.push(op);
//document.write( "第"+i+"個 "+s+" op="+op+" type="+type+" logicOp="+this.logicOpArray[i]+" <br>");
}
// document.write("<br>");
// document.write("<br>");
// document.write("<br>");
return this;//鏈式操作
},
msg:function(msg){
alert(msg);
}
});
//(f=3) and (a=1 and (b=2 or (c=4 and e=5) or (c1=4 and e=5) and ( d=3 )
//var a = new WhereParser();
// a.setParseString(" a>='2' or (a in(20)) and b=3 and ( (c in(1,2,3,4)) and (a in(2,3,4) )) or (a=23) and e=3 ");
//a.setParseString(" A>='2' OR C>33 AND B3 AND E</mystring.length>
js類定義（翻出的js代碼）
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