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scott reachardSubject: Better way to do this?
Author: scott reachard
Date: 10 Dec 2008 10:11 AM
first time posting here! I'm an sql guy trying to be an xquery guy, I've been working on learning xquery and xml for about a week and i'm starting to make some sense out of this. I have a directory of invoice XML documents and i need to find and extract all invoice documents that contain a inovice line with a type of BOM. I need the entire invoice, not just the line with the BOM type. I've got something that works, but think there might be a better way to do it.

the actual purpose isn't to get a line count, but you get the idea. My question is is there a better way to do the join so I don't have to go to the filesystem twice?

here's what i've got:
the query:
xquery version "1.0";

let $invoices := distinct-values (

for $cft in collection("file:///C:/Invoices?select=test*.xml")
let $cf :=saxon:discard-document($cft)
let $invoice :=$cf//Root/Section_PageHeader_Invoice/Field_CustInvoiceJour_InvoiceId
for $item in $cf//Root/Section_Body_BodyCustInvoiceTrans
where normalize-space($item/Field_CustInvoiceTrans_SalesKitTypeDNT ) ='BOM'
return $invoice)

for $cft1 in collection("file:///C:/Invoices?select=test*.xml")
let $cf1 :=saxon:discard-document($cft1)
where data($cf1//Root/Section_PageHeader_Invoice/Field_CustInvoiceJour_InvoiceId) =$invoices
return
<Invoice>
{$cf1//Root/Section_PageHeader_Invoice/Field_CustInvoiceJour_InvoiceId}
<lines>{count($cf1//Root/Section_Body_BodyCustInvoiceTrans)}</lines>
</Invoice>



test xml files
test1.xml
<?xml version="1.0" encoding="UTF-8"?>
<Root>
<Section_PageHeader_Invoice>
<Field_CustInvoiceJour_InvoiceId>test1 </Field_CustInvoiceJour_InvoiceId>
</Section_PageHeader_Invoice>
<Section_Body_BodyCustInvoiceTrans>
<Field_CustInvoiceTrans_SalesKitTypeDNT> BOM </Field_CustInvoiceTrans_SalesKitTypeDNT>
<Field_ItemId> 11-302-03PC </Field_ItemId>
</Section_Body_BodyCustInvoiceTrans>
<Section_Body_BodyCustInvoiceTrans>
<Field_CustInvoiceTrans_SalesKitTypeDNT> BOM </Field_CustInvoiceTrans_SalesKitTypeDNT>
<Field_ItemId> 11-302-06PC </Field_ItemId>
</Section_Body_BodyCustInvoiceTrans>
<Section_Body_BodyCustInvoiceTrans>
<Field_CustInvoiceTrans_SalesKitTypeDNT> Standard </Field_CustInvoiceTrans_SalesKitTypeDNT>
<Field_ItemId> 12-100-06 </Field_ItemId>
</Section_Body_BodyCustInvoiceTrans>
</Root>

test2.xml
<?xml version="1.0" encoding="UTF-8"?>
<Root>
<Section_PageHeader_Invoice>
<Field_CustInvoiceJour_InvoiceId>test2 </Field_CustInvoiceJour_InvoiceId>
</Section_PageHeader_Invoice>
<Section_Body_BodyCustInvoiceTrans>
<Field_CustInvoiceTrans_SalesKitTypeDNT> Standard </Field_CustInvoiceTrans_SalesKitTypeDNT>
<Field_ItemId> ODG1016S </Field_ItemId>
</Section_Body_BodyCustInvoiceTrans>
</Root>

test3.xml
<?xml version="1.0" encoding="UTF-8"?>
<Root>
<Section_PageHeader_Invoice>
<Field_CustInvoiceJour_InvoiceId> test3 </Field_CustInvoiceJour_InvoiceId>
</Section_PageHeader_Invoice>
<Section_Body_BodyCustInvoiceTrans>
<Field_CustInvoiceTrans_SalesKitTypeDNT> BOM </Field_CustInvoiceTrans_SalesKitTypeDNT>
<Field_ItemId> AWS-18C </Field_ItemId>
</Section_Body_BodyCustInvoiceTrans>
<Section_Body_BodyCustInvoiceTrans>
<Field_CustInvoiceTrans_SalesKitTypeDNT> BOM </Field_CustInvoiceTrans_SalesKitTypeDNT>
<Field_ItemId> AWS-27 </Field_ItemId>
</Section_Body_BodyCustInvoiceTrans>
<Section_Body_BodyCustInvoiceTrans>
<Field_CustInvoiceTrans_SalesKitTypeDNT> BOM </Field_CustInvoiceTrans_SalesKitTypeDNT>
<Field_ItemId> AWSM-25 </Field_ItemId>
</Section_Body_BodyCustInvoiceTrans>
<Section_Body_BodyCustInvoiceTrans>
<Field_CustInvoiceTrans_SalesKitTypeDNT> BOM </Field_CustInvoiceTrans_SalesKitTypeDNT>
<Field_ItemId> AWSM-28 </Field_ItemId>
</Section_Body_BodyCustInvoiceTrans>
</Root>



Thanks in advance!
--scott
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(Deleted User) Subject: Better way to do this?
Author: (Deleted User)
Date: 12 Dec 2008 05:55 AM
Hi Scott,
you can use the feature of XQuery that allows running functions inside an XPath expression to build a set of normalized invoice types; at that point, a single test can tell you if there is at least one BOM invoice in the entire file.

xquery version "1.0";

for $cft in collection("file:///C:/Invoices?select=test*.xml")
let $cf :=saxon:discard-document($cft)
return
if($cf//Root/Section_Body_BodyCustInvoiceTrans/normalize-space(Field_CustInvoiceTrans_SalesKitTypeDNT )='BOM')
then
<Invoice>
{$cf//Root/Section_PageHeader_Invoice/Field_CustInvoiceJour_InvoiceId}
<lines>{count($cf//Root/Section_Body_BodyCustInvoiceTrans)}</lines>
</Invoice>
else
()


Alberto
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scott reachardSubject: Better way to do this?
Author: scott reachard
Date: 12 Dec 2008 08:49 AM
Thanks!!

that makes sense, and it looks much better than how i did it!
   
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