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rajat nairSubject: Conditional statements in xquery
Author: rajat nair
Date: 18 Jan 2008 02:24 PM
Hi,
the following is my xquery
declare namespace a = "http://www.openapplications.org/oagis/9";
declare variable $d:="";
{

for $PurchaseOrderLine in /*:ProcessPurchaseOrder/*:DataArea/*:PurchaseOrder/*:PurchaseOrderLine
let $d:= $PurchaseOrderLine/*:Item/*:ItemID/*:ID
return
<ResponseDetail>

<ItemLineNumber>
{$PurchaseOrderLine/*:LineNumber/text()}
</ItemLineNumber>
{
if ($d/text()="") then
<ItemNumber source ="">
{$PurchaseOrderLine/*:Item/*:ItemID/*:ID/text()}
</ItemNumber>
else
<ItemNumber source ="UI ">
{$PurchaseOrderLine/*:Item/*:ItemID/*:ID/text()}
</ItemNumber>
}
<ItemNumber source ="BP">
{$PurchaseOrderLine/*:Item/*:CustomerItemID/*:ID/text()}
</ItemNumber>
<ItemNumber source ="MP">
{$PurchaseOrderLine/*:Item/*:ManufacturerItemID/*:ID/text()}
</ItemNumber>
<ItemNumber source ="VC">
{$PurchaseOrderLine/*:Item/*:SupplierItemID/*:ID/text()}
</ItemNumber>
else()}
</ResponseDetail>
}

The lines
if ($d/text()="") then
<ItemNumber source ="">
{$PurchaseOrderLine/*:Item/*:ItemID/*:ID/text()}
</ItemNumber>
fail to work and always the result in the else loop is displayed.

>> what i m trying to do is when $PurchaseOrderLine/*:Item/*:ItemID/*:ID/text = null then the tags holding the null information should be
<ItemNumber source ="">
</ItemNumber>
and when not null the tags should be
<ItemNumber source ="UI">
<ItemNumber source ="">
{$PurchaseOrderLine/*:Item/*:ItemID/*:ID/text()}
</ItemNumber>
and similarily for the other tags too.
I don't know if i m missing something or if my approach is wrong.Any help would be greatly appreciated.I m using the saxon processor to generate java code from the following xquery, and run it.

Regards
Rajat
Posttop
Minollo I.Subject: Conditional statements in xquery
Author: Minollo I.
Date: 18 Jan 2008 02:34 PM
Try using if (empty($d)) then ... else ...
   
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