Java Architecture for XML Binding 2.3.1 · javax.xml.bind.annotation.DomHandler

Converts an element (and its descendants) from/to DOM (or similar) representation.

Implementations of this interface will be used in conjunction with 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

Modifier and Type	Method and Description
public ResultT	Returns: null if the operation fails. The error must have been reported to the error handler. createUnmarshaller(ValidationEventHandler if any error happens between the invocation of this method and the invocation of `getElement(Result)`, they must be reported to this handler. The caller must provide a non-null error handler. The `Result` object created from this method may hold a reference to this error handler. 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 `Result` object.
public ElementT	Returns: null if the operation fails. The error must have been reported to the error handler. getElement(ResultT The `Result` object created by `createUnmarshaller(ValidationEventHandler)`. rt) Once the portion is sent to the `Result`.
public Source	Returns: null if there was an error. The error should have been reported to the handler. marshal(ElementT n, ValidationEventHandler Receives any errors happened during the process of converting an element into a `Source`. The caller must provide a non-null error handler. errorHandler) This method is called when a JAXB provider needs to marshal an element to XML.

Method Detail

createUnmarshaller back to summary

createUnmarshaller	back to summary
public ResultT 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 `Result` object. 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. Parameters errorHandler:ValidationEventHandler if any error happens between the invocation of this method and the invocation of `getElement(Result)`, they must be reported to this handler. The caller must provide a non-null error handler. The `Result` object created from this method may hold a reference to this error handler. Returns:ResultT null if the operation fails. The error must have been reported to the error handler.

public ResultT 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 Result object.

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.

Parameters

errorHandler:ValidationEventHandler: if any error happens between the invocation of this method and the invocation of getElement(Result), they must be reported to this handler. The caller must provide a non-null error handler. The Result object created from this method may hold a reference to this error handler.

Returns:ResultT

null if the operation fails. The error must have been reported to the error handler.

getElement back to summary

getElement	back to summary
public ElementT getElement(ResultT rt) Once the portion is sent to the `Result`. This method is called by a JAXB provider to obtain the unmarshalled element representation. Multiple invocations of this method may return different objects. This method can be invoked only when the whole sub-tree are fed to the `Result` object. Parameters rt:ResultT The `Result` object created by `createUnmarshaller(ValidationEventHandler)`. Returns:ElementT null if the operation fails. The error must have been reported to the error handler.

public ElementT getElement(ResultT rt)

Once the portion is sent to the Result. This method is called by a JAXB provider to obtain the unmarshalled element representation.

Multiple invocations of this method may return different objects. This method can be invoked only when the whole sub-tree are fed to the Result object.

Parameters

rt:ResultT: The Result object created by createUnmarshaller(ValidationEventHandler).

Returns:ElementT

null if the operation fails. The error must have been reported to the error handler.

marshal back to summary

marshal	back to summary
public Source marshal(ElementT n, ValidationEventHandler errorHandler) This method is called when a JAXB provider needs to marshal an element to XML. If non-null, the returned `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. Parameters errorHandler:ValidationEventHandler Receives any errors happened during the process of converting an element into a `Source`. The caller must provide a non-null error handler. Returns:Source null if there was an error. The error should have been reported to the handler.

public Source marshal(ElementT n, ValidationEventHandler errorHandler)

This method is called when a JAXB provider needs to marshal an element to XML.

If non-null, the returned 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.

Parameters

errorHandler:ValidationEventHandler: Receives any errors happened during the process of converting an element into a Source. The caller must provide a non-null error handler.

Returns:Source

null if there was an error. The error should have been reported to the handler.

public Interface DomHandler<ElementT, ResultT extends javax.xml.transform.Result>

Method Summary

Method Detail