I am currently using EclipseLink MOXy 2.4.1 and trying to update an element's value via XPaths. The input used is :
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<expenseReport>
<user>
<userName>Sanaulla</userName>
</user>
<items>
<item>
<itemName>Seagate External HDD</itemName>
<purchasedOn>August 24, 2010</purchasedOn>
<amount>6776.5</amount>
</item>
<item>
<itemName>External HDD</itemName>
<purchasedOn>August 24, 2010</purchasedOn>
<amount>677336.5</amount>
</item>
</items>
</expenseReport>
The XSD is
<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="expenseReport" type="ExpenseT"/>
<xs:complexType name="ExpenseT">
<xs:sequence>
<xs:element name="user" type="UserT"/>
<xs:element name="items" type="ItemListT"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="UserT">
<xs:sequence>
<xs:element name="userName" type="xs:string"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="ItemListT">
<xs:sequence>
<xs:element name="item" type="ItemT" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="ItemT">
<xs:sequence>
<xs:element name="itemName" type="xs:string"/>
<xs:element name="purchasedOn" type="xs:string"/>
<xs:element name="amount" type="xs:decimal"/>
</xs:sequence>
</xs:complexType>
</xs:schema>
And my Java code is :
JAXBContext context = JAXBContext.newInstance("sample.jaxb.xsd");
JAXBElement<ExpenseT> element = (JAXBElement<ExpenseT>)unmarshaller.unmarshal(new File("resources/sample_before.xml"));
ExpenseT expenseReport = element.getValue();
context.setValueByXPath(expenseReport, "items/item[1]/amount/text()", null, "100.11");
/** Marshalling code **/
I have my java classes created from the XSD using Moxy's tool "jaxb-compiler.cmd". As you can see from the above code, I am trying to set the amount of 1st item to "100.11". But it doesn't set the value, nor does it throw any exception. I tried setting the username above using XPath like this
context.setValueByXPath(expenseReport, "user/userName/text()", null, "ABC");
And, it does set/update the value properly. Can you please advise on how can I set values for complex XPaths with Predicates? Something like this :
items/item[itemName='Seagate External HDD']/amount