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(). | 
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,
          java.lang.String key,
          java.lang.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.Copyright © 1999-2022 The Apache Software Foundation. All Rights Reserved.