public interface UserDataHandler
Node.setUserData() the application can provide a handler
 that gets called when the node the object is associated to is being
 cloned, imported, or renamed. This can be used by the application to
 implement various behaviors regarding the data it associates to the DOM
 nodes. This interface defines that handler.
 See also the Document Object Model (DOM) Level 3 Core Specification.
| Modifier and Type | Field and Description | 
|---|---|
| static short | NODE_ADOPTEDThe node is adopted, using  Document.adoptNode(). | 
| static short | NODE_CLONEDThe node is cloned, using  Node.cloneNode(). | 
| static short | NODE_DELETEDThe node is deleted. | 
| static short | NODE_IMPORTEDThe node is imported, using  Document.importNode(). | 
| static short | NODE_RENAMEDThe node is renamed, using  Document.renameNode(). | 
| Modifier and Type | Method and Description | 
|---|---|
| void | handle(short operation,
      String key,
      Object data,
      Node src,
      Node dst)This method is called whenever the node for which this handler is
 registered is imported or cloned. | 
static final short NODE_CLONED
Node.cloneNode().static final short NODE_IMPORTED
Document.importNode().static final short NODE_DELETED
Note: This may not be supported or may not be reliable in certain environments, such as Java, where the implementation has no real control over when objects are actually deleted.
static final short NODE_RENAMED
Document.renameNode().static final short NODE_ADOPTED
Document.adoptNode().void handle(short operation,
            String key,
            Object data,
            Node src,
            Node dst)
UserDataHandler. The effect of throwing exceptions from
 the handler is DOM implementation dependent.operation - Specifies the type of operation that is being
   performed on the node.key - Specifies the key for which this handler is being called.data - Specifies the data for which this handler is being called.src - Specifies the node being cloned, adopted, imported, or
   renamed. This is null when the node is being deleted.dst - Specifies the node newly created if any, or
   null. Submit a bug or feature 
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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