org.basex.query.up.primitives

Class DeleteNode

java.lang.Object

org.basex.query.up.primitives.UpdatePrimitive

org.basex.query.up.primitives.StructuralUpdate

org.basex.query.up.primitives.DeleteNode

All Implemented Interfaces:

java.lang.Comparable<UpdatePrimitive>

public final class DeleteNode
extends StructuralUpdate

Delete primitive.

Author:

BaseX Team 2005-12, BSD License, Lukas Kircher

Field Summary

Fields inherited from class org.basex.query.up.primitives.UpdatePrimitive

data, input, pre, type

Constructor Summary

Constructors

Constructor and Description
DeleteNode(int p, Data d, InputInfo i) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	adjacentTexts(int c) Checks whether adjacent text nodes have been introduced as a result of this update primitive.
void	apply() Applies this update primitive to the corresponding database.
void	merge(UpdatePrimitive p) Merges two update primitives, as they have the same target node.
int	size() Returns the total number of node operations.
java.lang.String	toString()
void	update(NamePool pool) Updates the name pool, which is used to find duplicate attributes and namespace conflicts.

Methods inherited from class org.basex.query.up.primitives.StructuralUpdate

preShifts

Methods inherited from class org.basex.query.up.primitives.UpdatePrimitive

compareTo, targetNode

Methods inherited from class java.lang.Object

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

Constructor Detail

DeleteNode

public DeleteNode(int p,
          Data d,
          InputInfo i)

Constructor.

Parameters:

p - pre

d - data

i - input info

Method Detail

merge

public void merge(UpdatePrimitive p)

Description copied from class: UpdatePrimitive

Merges two update primitives, as they have the same target node.

Specified by:

merge in class UpdatePrimitive

Parameters:

p - primitive to merge with

apply

public void apply()

Description copied from class: UpdatePrimitive

Applies this update primitive to the corresponding database.

Specified by:

apply in class UpdatePrimitive

adjacentTexts

public boolean adjacentTexts(int c)

Description copied from class: StructuralUpdate

Checks whether adjacent text nodes have been introduced as a result of this update primitive. Text node adjacency can only be taken care of if no more updates are to be expected for the left sibling of this target node. The total number of deleted/inserted nodes on the preceding axis of this target node is given recalculate the actual pre value of this target.

Specified by:

adjacentTexts in class StructuralUpdate

Parameters:

c - pre value shifts introduced by updates on the preceding sibling axis of this target node

Returns:

adjacent text nodes have been found and merged

update

public void update(NamePool pool)

Description copied from class: UpdatePrimitive

Updates the name pool, which is used to find duplicate attributes and namespace conflicts.

Overrides:

update in class UpdatePrimitive

Parameters:

pool - name pool

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

size

public int size()

Description copied from class: UpdatePrimitive

Returns the total number of node operations.

Specified by:

size in class UpdatePrimitive

Returns:

number of updates