org.jscience.ml.cml.dom.pmr
Class PMRUserDataHandlerImpl

java.lang.Object
  org.jscience.ml.cml.dom.pmr.PMRUserDataHandlerImpl

All Implemented Interfaces:

org.w3c.dom.UserDataHandler

public class PMRUserDataHandlerImpl
extends java.lang.Object
implements org.w3c.dom.UserDataHandler

When associating an object to a key on a node using 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.

Field Summary

Fields inherited from interface org.w3c.dom.UserDataHandler

NODE_ADOPTED, NODE_CLONED, NODE_DELETED, NODE_IMPORTED, NODE_RENAMED

Constructor Summary

PMRUserDataHandlerImpl()

Method Summary

void	handle(short operation, java.lang.String key, java.lang.Object data, org.w3c.dom.Node src, org.w3c.dom.Node dst) This method is called whenever the node for which this handler is registered is imported or cloned.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PMRUserDataHandlerImpl

public PMRUserDataHandlerImpl()

Method Detail

handle

public void handle(short operation,
                   java.lang.String key,
                   java.lang.Object data,
                   org.w3c.dom.Node src,
                   org.w3c.dom.Node dst)

This method is called whenever the node for which this handler is registered is imported or cloned.

This method is called whenever the node for which this handler is registered is imported or cloned. DOM applications must not raise exceptions in a UserDataHandler. The effect of throwing exceptions from the handler is DOM implementation dependent.

Specified by:

handle in interface org.w3c.dom.UserDataHandler

Parameters:

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.