org.basex.query.up.primitives

Class UpdatePrimitive

java.lang.Object

org.basex.query.up.primitives.UpdatePrimitive

All Implemented Interfaces:

java.lang.Comparable<UpdatePrimitive>

Direct Known Subclasses:

DBDelete, DBOptimize, DBRename, DBStore, Put, RenameNode, ReplaceValue, StructuralUpdate

public abstract class UpdatePrimitive
extends java.lang.Object
implements java.lang.Comparable<UpdatePrimitive>

Base class for all update primitives.

Author:

BaseX Team 2005-12, BSD License, Lukas Kircher

Field Summary

Fields

Modifier and Type	Field and Description
Data	data Target data reference.
InputInfo	input Input info.
int	pre Target pre value.
PrimitiveType	type Primitive Type.

Method Summary

Methods

Modifier and Type	Method and Description
abstract void	apply() Applies this update primitive to the corresponding database.
int	compareTo(UpdatePrimitive p)
abstract void	merge(UpdatePrimitive p) Merges two update primitives, as they have the same target node.
abstract int	size() Returns the total number of node operations.
DBNode	targetNode() Creates a DBNode instance from the target node information.
void	update(NamePool pool) Updates the name pool, which is used to find duplicate attributes and namespace conflicts.

Methods inherited from class java.lang.Object

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

Field Detail

type

public final PrimitiveType type

Primitive Type.

pre

public final int pre

Target pre value.

data

public final Data data

Target data reference.

input

public final InputInfo input

Input info.

Method Detail

targetNode

public final DBNode targetNode()

Creates a DBNode instance from the target node information.

Returns:

DBNode

compareTo

public final int compareTo(UpdatePrimitive p)

Specified by:

compareTo in interface java.lang.Comparable<UpdatePrimitive>

merge

public abstract void merge(UpdatePrimitive p)
                    throws QueryException

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

Parameters:

p - primitive to merge with

Throws:

QueryException - exception

apply

public abstract void apply()
                    throws QueryException

Applies this update primitive to the corresponding database.

Throws:

QueryException - exception

update

public void update(NamePool pool)

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

Parameters:

pool - name pool

size

public abstract int size()

Returns the total number of node operations.

Returns:

number of updates