"Working With Dynamic XML Documents, by Jon Siegel"
Vol. 6, Issue 5, p. 34

	





 
Listing 1

<purchase_order company="Enjay Manufacturing" 
number="01239876">
 <ship_to_address>
 <street>21 Pine 
Street</street>
 <city>Cleveland</city>
 <state>OH</state>
 <postcode>44113</postcode>
 </ship_to_address>
 <POitem_list>
 <POitem>
 
<POitem_name>bolt</POitem_name>
 
<POitem_number>BO1420</POitem_number>
 
<POitem_size>1/4X20</POitem_size>
 
<POitem_quantity>120gross</POitem_quantity>
 </POitem>
 <POitem>
 
<POitem_name>nut</POitem_name>
 
<POitem_number>NU14</POitem_number>
 
<POitem_size>1/4</POitem_size>
 
<POitem_quantity>120gross</POitem_quantity>
 </POitem>
 </POitem_list>
</purchase_order>

Listing 2 

// Modify any Bolt items quantity values to 150 gross
 // where their POitem_number is 'BO1420'
 DOMString checker = makeDOMString("BO1420");
 DOMString change = 
makeDOMString("150gross");
 // Loop over the items in our PO:
 for (int i = 0; i < elms.length(); i++)
 {
 Element poItem = 
(Element)elms.item(i);
 // ino is the POitem_number element for this 
poItem:
 NodeList ino =
 
poItem.getElementsByTagName(makeDOMString("POitem_number"));
 // iqty is the POitem_quantity element for 
this poItem:
 NodeList iqty =
 
poItem.getElementsByTagName(makeDOMString("POitem_quantity"));
 if (ino.length() != 1 || iqty.length() != 
1)
 {
 System.err.println("Invalid 
purchase Order");
 System.exit(1);
 }
 // This next line is explained in detail in 
the text
 if 
(((Text)(ino.item(0).firstChild())).data().equals(checker))
 {
 // Compare successful: this 
poItem needs its gross changed
 
((Text)(iqty.item(0).firstChild())).data(change);
 }
 }
 
Listing 3 

{
 // Retrieve a purchasing server object reference
 // from the naming service...
 PurchasingServer server = whatever;
 // Set up the document root of our PO tree 
structure:
 //
 dom.Document thePO = whatever; // set equal to our PO 
document root
 // Here we go...
 if (server.PlaceOrder(thePO)) // this line sends 
the entire document
 {
 // Success!
 }
 else
 {
 // Whoops.
 }
 }