com.saxonica.update
Class ReplaceAttributeAction

java.lang.Object
  com.saxonica.update.ReplaceAttributeAction

All Implemented Interfaces:

PendingUpdateAction

public class ReplaceAttributeAction
extends java.lang.Object
implements PendingUpdateAction

A pending update action representing a replace node expression applied to an attribute. Note that the replacement attribute may be absent; this is not quite the same as a delete operation, because the consistency rules on the pending update list are different.

Constructor Summary

ReplaceAttributeAction(NodeInfo element, int oldNameCode, int newNameCode, int typeCode, java.lang.CharSequence value, int properties)
Create a InsertAttributeAction

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.
int	getNewNameCode() Get the name of the inserted attribute as an integer namecode
int	getOldNameCode() Get the name of the replaced attribute as an integer namecode
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

ReplaceAttributeAction

public ReplaceAttributeAction(NodeInfo element,
                              int oldNameCode,
                              int newNameCode,
                              int typeCode,
                              java.lang.CharSequence value,
                              int properties)

Create a InsertAttributeAction

Parameters:

element - the element into which it is to be inserted

oldNameCode - the name of the old attribute

newNameCode - the name of the new attribute, or -1 if there is no new attribute

typeCode - the type annotation of the new attribute, or -1 if there is no new attribute

value - the string value of the new attribute, or null if there is no new attribute

properties - properties including IS_ID and IS_IDREF properties

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.

getOldNameCode

public int getOldNameCode()

Get the name of the replaced attribute as an integer namecode

Returns:

the name of the attribute being replaced

getNewNameCode

public int getNewNameCode()

Get the name of the inserted attribute as an integer namecode

Returns:

the new name as an integer namecode, or -1 if the attribute is to be deleted without replacement

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