Since I think I can answer your question I probably misunderstand it. :) However ...
Given an XSD: <?xml version="1.0" encoding="UTF-8"?> <xs:schema targetNamespace="org.eltesto" elementFormDefault="qualified" attributeFormDefault="unqualified" xmlns="org.eltesto" xmlns:xs="http://www.w3.org/2001/XMLSchema";> <xs:element name="Rootie"> <xs:complexType> <xs:sequence> <xs:element name="ItLives" type="xs:string"/> <xs:element name="DoorNail" type="xs:string" minOccurs="0"/> </xs:sequence> </xs:complexType> </xs:element> </xs:schema> And XML: <?xml version="1.0" encoding="UTF-8"?> <Rootie xmlns="org.eltesto" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="org.eltesto xsd\Rootie.xsd"> <ItLives>foo</ItLives> <DoorNail>bar</DoorNail> </Rootie> This program modifies and deletes element DoorNail: package org.eltesto; import java.io.File;import eltesto.org.RootieDocument; import eltesto.org.RootieDocument.Rootie; public class Main { public static void main(String[] args) throws Exception { Main m = new Main(); m.go(args); } private void go(String[] args) throws Exception { File f = new File("Rootie.xml"); RootieDocument rd = RootieDocument.Factory.parse(f); System.out.println(rd.xmlText()); Rootie r = rd.getRootie(); r.setDoorNail("modified"); System.out.println(rd.xmlText()); r.unsetDoorNail(); System.out.println(rd.xmlText()); } } Output: <Rootie xsi:schemaLocation="org.eltesto xsd\Rootie.xsd" xmlns="org.eltesto" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";> <ItLives>foo</ItLives> <DoorNail>bar</DoorNail> </Rootie> <Rootie xsi:schemaLocation="org.eltesto xsd\Rootie.xsd" xmlns="org.eltesto" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";> <ItLives>foo</ItLives> <DoorNail>modified</DoorNail> </Rootie> <Rootie xsi:schemaLocation="org.eltesto xsd\Rootie.xsd" xmlns="org.eltesto" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";> <ItLives>foo</ItLives> </Rootie> Note that you only get the "unset." method if the element is declared as optional, i.e. 'minOccurs="0"' which is as it should be. Cordially, Paul Gillen -----Original Message----- From: Lott, Christopher M [mailto:cl...@appcomsci.com] Sent: Monday, August 19, 2013 5:33 PM To: user@xmlbeans.apache.org Subject: Modifying XmlBeans document without XmlValueDisconnectedException? I tried asking this on StackOverflow, but then realized that this email list is probably the better place, so please forgive if you read both places. I hope someone can please find time to answer. We use XmlBeans, code generated from a schema, to read in an XML instance that conforms to the schema and modify it. Read and validate work fine; modify is killing me. For example, change the value of an element, delete an element from a list, etc. I am using Java method calls like removeMyElement(i) to remove the element at position (i). I am not using Cursors or any low-level DOM access. We thought it would be convenient to walk thru the document, gather a list of elements (i.e., references to XmlBeans objects) that need to be modified or nuked, then iterate over the list changing them. But use of a cached object reference is where I run into the ditch: I get XmlValueDisconnectedException. I read that this means the XmlObject has become disconnected from its underlying store. But I have not discarded the Document! Does every change to an XmlObject backed by the XmlBeans XmlStore cause all existing references to become invalid? I don't yet have the right mental model for what's going on when I call the java methods. I checked the XmlBeans FAQ and the sample code for guidelines. I found many samples at <http://xmlbeans.apache.org/samples/> http://xmlbeans.apache.org/samples/ that show how to create an object from scratch, how to read in XML, how to validate XML, etc. Unfortunately I didn't find a sample that does a messy change to the content. The FAQ at <http://wiki.apache.org/xmlbeans/XmlBeansFaq> http://wiki.apache.org/xmlbeans/XmlBeansFaq doesn't have a good question on this either. Thanks in advance. --------------------------------------------------------------------- To unsubscribe, e-mail: <mailto:user-unsubscr...@xmlbeans.apache.org> user-unsubscr...@xmlbeans.apache.org For additional commands, e-mail: <mailto:user-h...@xmlbeans.apache.org> user-h...@xmlbeans.apache.org
