org.basex.query.up.primitives

Class InsertBefore

java.lang.Object

org.basex.query.up.primitives.UpdatePrimitive

org.basex.query.up.primitives.StructuralUpdate

org.basex.query.up.primitives.NodeCopy

org.basex.query.up.primitives.InsertBefore

All Implemented Interfaces:

java.lang.Comparable<UpdatePrimitive>

public final class InsertBefore
extends NodeCopy

Insert before 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
InsertBefore(int p, Data d, InputInfo i, NodeCache c) 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.

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

prepare, size, toString

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

preShifts

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

compareTo, targetNode, update

Methods inherited from class java.lang.Object

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

Constructor Detail

InsertBefore

public InsertBefore(int p,
            Data d,
            InputInfo i,
            NodeCache c)

Constructor.

Parameters:

p - pre

d - data

i - input info

c - node copy

Method Detail

apply

public void apply()

Description copied from class: UpdatePrimitive

Applies this update primitive to the corresponding database.

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

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