com.saxonica.update
Class DeleteAction

java.lang.Object
  com.saxonica.update.DeleteAction

All Implemented Interfaces:

PendingUpdateAction

public class DeleteAction
extends java.lang.Object
implements PendingUpdateAction

A pending update action representing the effect of a delete expression

Constructor Summary

DeleteAction(ValueRepresentation nodes)
Create a DeleteAction

Method Summary

void	apply(XPathContext context, java.util.Set affectedRootSet) Apply the pending update action to the affected nodes
int	getApplyPhase() Get the phase of operation in which this pending update action is applied.
NodeInfo	getTargetNode() Get the target node of the update action

Methods inherited from class java.lang.Object

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

Constructor Detail

DeleteAction

public DeleteAction(ValueRepresentation nodes)

Create a DeleteAction

Parameters:

nodes - the sequence of nodes to be deleted

Method Detail

apply

public void apply(XPathContext context,
                  java.util.Set affectedRootSet)
           throws XPathException

Apply the pending update action to the affected nodes

Specified by:

apply in interface PendingUpdateAction

Parameters:

context - the XPath evaluation context

affectedRootSet - the set of roots of trees that have been modified, which this action should add to as necessary

Throws:

XPathException - if any error occurs applying the update

getTargetNode

public NodeInfo getTargetNode()

Get the target node of the update action

Specified by:

getTargetNode in interface PendingUpdateAction

Returns:

the target node, the node to which this update action applies. Returns null in the case of a delete action, which affects multiple nodes.

getApplyPhase

public int getApplyPhase()

Get the phase of operation in which this pending update action is applied. See 3.2.2 upd:applyUpdates, Semantics, rule 2.

Specified by:

getApplyPhase in interface PendingUpdateAction

Returns:

the phase of operation, an integer in the range 1 to 5 representing the stages labelled a-e in the specification