public abstract static class Unmarshaller.Listener extends Object
Register an instance of an implementation of this class with Unmarshaller
to externally listen
for unmarshal events.
This class enables pre and post processing of an instance of a Jakarta XML Binding mapped class as XML data is unmarshalled into it. The event callbacks are called when unmarshalling XML content into a JAXBElement instance or a Jakarta XML Binding mapped class that represents a complex type definition. The event callbacks are not called when unmarshalling to an instance of a Java datatype that represents a simple type definition.
External listener is one of two different mechanisms for defining unmarshal event callbacks. See Unmarshal Event Callbacks for an overview.
(@link #setListener(Listener)} (@link #getListener()}Constructor and Description |
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Listener() |
Modifier and Type | Method and Description |
---|---|
void |
afterUnmarshal(Object target,
Object parent)
Callback method invoked after unmarshalling XML data into
target . |
void |
beforeUnmarshal(Object target,
Object parent)
Callback method invoked before unmarshalling into
target . |
public void beforeUnmarshal(Object target, Object parent)
Callback method invoked before unmarshalling into target
.
This method is invoked immediately after target
was created and
before the unmarshalling of this object begins. Note that
if the class of target
defines its own beforeUnmarshal
method,
the class specific callback method is invoked before this method is invoked.
target
- non-null instance of Jakarta XML Binding mapped class prior to unmarshalling into it.parent
- instance of Jakarta XML Binding mapped class that will eventually reference target
.
null
when target
is root element.public void afterUnmarshal(Object target, Object parent)
Callback method invoked after unmarshalling XML data into target
.
This method is invoked after all the properties (except IDREF)
are unmarshalled into target
,
but before target
is set into its parent
object.
Note that if the class of target
defines its own afterUnmarshal
method,
the class specific callback method is invoked before this method is invoked.
target
- non-null instance of Jakarta XML Binding mapped class prior to unmarshalling into it.parent
- instance of Jakarta XML Binding mapped class that will reference target
.
null
when target
is root element.Copyright © 2018,2020 Eclipse Foundation.
Use is subject to license terms.