Re: Modifying XmlBeans document without XmlValueDisconnectedException?

Thanks to Nick B. and Paul G. for their quick replies!  Below is code that =
demonstrates, at least superficially, the exception that we get.  We are do=
ing something wrong in our code; I don't suspect an XmlBeans bug at this po=
int.  This code is derived from (and depends on the schema and example XML =
instance from) the XmlBeans tutorial at http://xmlbeans.apache.org/document=
ation/tutorial_getstarted.html

--
package my.xb.example;

import java.io.File;
import java.math.BigDecimal;
import java.math.BigInteger;

import org.openuri.easypo.LineItem;
import org.openuri.easypo.PurchaseOrderDocument;

public class POUpdater {
	public static void main(String[] args) throws Exception {
		if (args.length < 5)
			throw new Exception("Usage: inputfile desc ounces price quantity");
		File poXmlFile =3D new File(args[0]);
		String updatedPoXml =3D addLineItem(poXmlFile, args[1], args[2], args[3],
				args[4]);
		System.out.println(updatedPoXml);
	}

	private static String addLineItem(File purchaseOrder,
			String itemDescription, String perUnitOuncesString,
			String itemPriceString, String itemQuantityString) throws Exception {
	=09
		// Read in the file content
		PurchaseOrderDocument poDoc =3D PurchaseOrderDocument.Factory
				.parse(purchaseOrder);

		// Convert incoming data to types that can be used in accessors.
		BigDecimal perUnitOunces =3D new BigDecimal(perUnitOuncesString);
		BigDecimal itemPrice =3D new BigDecimal(itemPriceString);
		BigInteger itemQuantity =3D new BigInteger(itemQuantityString);

		// Add a new <line-item> element.
		LineItem newItem =3D poDoc.getPurchaseOrder().addNewLineItem();
		newItem.setDescription(itemDescription);
		newItem.setPerUnitOunces(perUnitOunces);
		newItem.setPrice(itemPrice);
		newItem.setQuantity(itemQuantity);

		// Delete the old first line item
		LineItem removedItem =3D poDoc.getPurchaseOrder().getLineItemArray(0);
		poDoc.getPurchaseOrder().removeLineItem(0);

		// Try to access the newly added one; is the ref still good?
		System.out.println("new item: " + newItem.toString());
		newItem.setDescription(newItem.getDescription() + " fu");

		// Try to access the removed one; this throws XmlValueDisconnectedExcepti=
on
		System.out.println("removed item: " + removedItem.toString());
	=09
		return poDoc.toString();
	}
}