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public interface DomHandler
Converts an element (and its descendants) from/to DOM (or similar) representation.
Implementations of this interface will be used in conjunction with {@link XmlAnyElement} annotation to map an element of XML into a representation of infoset such as W3C DOM.
Implementations hide how a portion of XML is converted into/from such DOM-like representation, allowing JAXB providers to work with arbitrary such library.
This interface is intended to be implemented by library writers and consumed by JAXB providers. None of those methods are intended to be called from applications.
Method Summary | |
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Result |
createUnmarshaller(ValidationEventHandler errorHandler) When a JAXB provider needs to unmarshal a part of a document into an infoset representation, it first calls this method to create a javax.xml.transform.Result object. |
Object |
getElement(Result rt) Once the portion is sent to the javax.xml.transform.Result. |
Source |
marshal(Object n, ValidationEventHandler errorHandler) This method is called when a JAXB provider needs to marshal an element to XML. |
Method Detail |
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public Result createUnmarshaller(ValidationEventHandler errorHandler)
A JAXB provider will then send a portion of the XML into the given result. Such a portion always form a subtree of the whole XML document rooted at an element.
errorHandler
- if any error happens between the invocation of this method
and the invocation of {@link #getElement(Result)}, they
must be reported to this handler.
The caller must provide a non-null error handler.
The {@link Result} object created from this method
may hold a reference to this error handler.public Object getElement(Result rt)
Multiple invocations of this method may return different objects. This method can be invoked only when the whole sub-tree are fed to the {@link Result} object.
rt
- The {@link Result} object created by {@link #createUnmarshaller(ValidationEventHandler)}.public Source marshal(Object n, ValidationEventHandler errorHandler)
If non-null, the returned {@link Source} must contain a whole document rooted at one element, which will then be weaved into a bigger document that the JAXB provider is marshalling.
n
errorHandler
- Receives any errors happened during the process of converting
an element into a {@link Source}.
The caller must provide a non-null error handler.
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