在 Adobe Livecycle ES4 中选择来自 dataNode 的不同元素

Question

>我有这个原始方法

var firstLine = ""
    if( frmStock.txtPRSID.rawValue <> null or frmStock.txtPRSDesp.rawValue <> null )
then
    firstLine = Concat(frmStock.txtPRSID.formattedValue," ",frmStock.txtPRSDesp.formattedValue)
endif
var secondLine = ""
if( frmStock.frmSN.txtSN.rawValue <> null )
then
    var snData = ref(frmStock.frmSN.txtSN.dataNode.parent)
    var snSet = ref(snData.resolveNodes("$.MaterialSerialID[*]"))
    var temp = ""
    for i=0 upto snSet.length-1
    do
        var Content = ref(snSet.item(i).resolveNode("$"))
        if( Content <> null )
        then
            temp = Concat(temp,Content.value)
            if( i <> snSet.length - 1 )
            then
                temp = Concat(temp,"u000a")
            endif
        endif
    endfor
    secondLine = temp
endif
if( secondLine == "" )
then
    secondLine = Concat(frmStock.txtType.formattedValue," ",frmStock.txtID.formattedValue)
endif
this.rawValue = Concat(firstLine,"u000a",secondLine)

我正在尝试从原始方法的这一部分中仅选择唯一且不同的元素：

/*This returns stuff like P0001 , P3333, P0001 , P444, P3333 */
 var snData = ref(frmStock.frmSN.txtSN.dataNode.parent)
    var snSet = ref(snData.resolveNodes("$.MaterialSerialID[*]"))
    var temp = ""
    for i=0 upto snSet.length-1
    do
        var Content = ref(snSet.item(i).resolveNode("$"))
        if( Content <> null )
        then
            temp = Concat(temp,Content.value)
            if( i <> snSet.length - 1 )
            then
                temp = Concat(temp,"u000a")
            endif
        endif
    endfor

所以我想到实现一个简单的解决方案是使用从这里启发的这个逻辑使用 twp 嵌套循环

// Pick all elements one by one
        for (int i = 0; i < list.lengh; i++)
        {
            // Check 
            int j;
            for (j = 0; j < i; j++)
            if (arr[i] == arr[j])
                skip
            // If not add it to list 
            if (i == j)
            add to list 
        }

所以我尝试将逻辑应用于我的方法

var snData = ref(frmStock.frmSN.txtSN.dataNode.parent)
    var snSet = ref(snData.resolveNodes("$.MaterialSerialID[*]"))
    var temp = ""
    for i=0 upto snSet.length-1
    do
        for j=0 upto i-1 
    do
        var tempI= ref(snSet.item(i).resolveNode("$"))
         var tempJ= ref(snSet.item(j).resolveNode("$"))
         if(tempI <> tempJ) 
             then 
             break
         if(i==j) then 
        var Content = ref(snSet.item(i).resolveNode("$"))
        if( Content <> null )
        then
            temp = Concat(temp,Content.value)
            if( i <> snSet.length - 1 )
            then
                temp = Concat(temp,"u000a")
            endif
        endif
        endif
        endif
            endfor
    endfor

我没有遇到任何错误，但返回的列表是空的，有人可以帮助我吗？如何仅从frmStock中返回不同的元素？

Answer 1

我最终找到了如何

我添加了一个函数

   function uniq(a) {
        return a.sort().filter(function(item, pos, ary) {
            return !pos || item != ary[pos - 1];
        })
    }

然后将其应用于项的数据源

var data = snData.resolveNodes("$.MaterialSerialID[*]");
var uniqData =  uniq(data);