org.basex.query.xpath.values
Class NodeSet

java.lang.Object
  org.basex.query.xpath.expr.Expr
      org.basex.query.xpath.values.Item
          org.basex.query.xpath.values.NodeSet

All Implemented Interfaces:

Result

public final class NodeSet
extends Item

XPath Value representing a NodeSet.

Author:

Workgroup DBIS, University of Konstanz 2005-07, ISC License, Tim Petrowsky

Field Summary

int	currPos Current nodeset position.
int	currSize Current nodeset size.
Data	data Data reference..
int[][]	ftidpos FTIdPos array.
int[]	ftids FTIds array.
int	mCount Count maximal number of pre-values.
int[]	nodes Node array.
int	size Number of stored values..

Constructor Summary

NodeSet(Data d)
Constructor, creating a new node set from the specified node ids.

NodeSet(int[] ids, Data d)
Constructor, creating a new node set from the specified node ids.

NodeSet(int[] ids, XPContext ctx)
Constructor, creating a new node set from the specified node ids.

NodeSet(int[] ids, XPContext ctx, int[][] ftIds)
Constructor, creating a new node set from the specified node ids.

NodeSet(XPContext ctx)
Constructor, creating an empty node set.

Method Summary

boolean	appr(Item v) Checks the approximate equality of the value and the specified value.
boolean	apprContainedIn(Item val) inverse ftcontains (this NodeSet is the argument to val.apprContains).
boolean	apprContains(Item v) Checks whether this value approximately contains the word(s) in val.
boolean	bool() Returns the boolean value.
boolean	contains(Item val) Checks whether this value contains the word(s) in val.
boolean	eq(Item v) Checks the equality of the value and the specified value.
NodeSet	eval(XPContext ctx) Evaluates the expression with the specified context set.
boolean	ftcontainedin(Item val) inverse ftcontains (this NodeSet is the argument to val.ftcontains).
boolean	ge(Item v) Checks if the value is greater than or equal to the specified value.
boolean	gt(Item v) Checks if the value is greater than the specified value.
boolean	le(Item v) Checks if the value is less than or equal to the specified value.
boolean	lt(Item v) Checks if the value is less than the specified value.
double	num() Returns the double value.
int	prec() Returns the evaluation precedence.
void	set(int pre) Sets a single node.
int	size() Number of values, stored in the result instance.
byte[]	str() Returns the literal value.
java.lang.String	toString()

Methods inherited from class org.basex.query.xpath.values.Item

compile, sameAs, serialize, serialize, usesPos, usesSize

Methods inherited from class org.basex.query.xpath.expr.Expr

indexEquivalent, indexSizes, returnedValue, sameAs

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

currPos

public int currPos

Current nodeset position.

currSize

public int currSize

Current nodeset size.

data

public Data data

Data reference..

ftidpos

public int[][] ftidpos

FTIdPos array.

ftids

public int[] ftids

FTIds array.

mCount

public int mCount

Count maximal number of pre-values.

nodes

public int[] nodes

Node array.

size

public int size

Number of stored values..

Constructor Detail

NodeSet

public NodeSet(Data d)

Constructor, creating a new node set from the specified node ids.

Parameters:

d - data reference

NodeSet

public NodeSet(int[] ids,
               Data d)

Constructor, creating a new node set from the specified node ids.

Parameters:

ids - node ids

d - data reference

NodeSet

public NodeSet(int[] ids,
               XPContext ctx)

Constructor, creating a new node set from the specified node ids.

Parameters:

ids - node ids

ctx - query context

NodeSet

public NodeSet(int[] ids,
               XPContext ctx,
               int[][] ftIds)

Constructor, creating a new node set from the specified node ids.

Parameters:

ids - node ids

ctx - query context

ftIds - ids and posvalues for fulltextqueries

NodeSet

public NodeSet(XPContext ctx)

Constructor, creating an empty node set.

Parameters:

ctx - query context

Method Detail

appr

public boolean appr(Item v)

Description copied from class: Item

Checks the approximate equality of the value and the specified value.

Parameters:

v - value to be compared

Returns:

result of comparison.

apprContainedIn

public boolean apprContainedIn(Item val)

inverse ftcontains (this NodeSet is the argument to val.apprContains).

Parameters:

val - value to contain one of these nodes

Returns:

whether val ftcontains one of the node-values in this set

apprContains

public boolean apprContains(Item v)

Description copied from class: Item

Checks whether this value approximately contains the word(s) in val.

Parameters:

v - value to be compared

Returns:

result of comparison.

bool

public boolean bool()

Description copied from class: Item

Returns the boolean value.

Specified by:

bool in class Item

Returns:

boolean value

contains

public boolean contains(Item val)

Description copied from class: Item

Checks whether this value contains the word(s) in val.

Parameters:

val - word(s) to be contained

Returns:

whether val is contained

eq

public boolean eq(Item v)

Description copied from class: Item

Checks the equality of the value and the specified value.

Specified by:

eq in class Item

Parameters:

v - value to be compared

Returns:

result of comparison.

eval

public NodeSet eval(XPContext ctx)

Description copied from class: Expr

Evaluates the expression with the specified context set. Additionally provides a context

Specified by:

eval in class Expr

Parameters:

ctx - query context

Returns:

resulting XPathValue

ftcontainedin

public boolean ftcontainedin(Item val)

inverse ftcontains (this NodeSet is the argument to val.ftcontains).

Parameters:

val - value to contain one of these nodes

Returns:

whether val ftcontains one of the node-values in this set

ge

public boolean ge(Item v)

Description copied from class: Item

Checks if the value is greater than or equal to the specified value.

Parameters:

v - value to be compared

Returns:

result of comparison.

gt

public boolean gt(Item v)

Description copied from class: Item

Checks if the value is greater than the specified value.

Parameters:

v - value to be compared

Returns:

result of comparison.

le

public boolean le(Item v)

Description copied from class: Item

Checks if the value is less than or equal to the specified value.

Parameters:

v - value to be compared

Returns:

result of comparison.

lt

public boolean lt(Item v)

Description copied from class: Item

Checks if the value is less than the specified value.

Parameters:

v - value to be compared

Returns:

result of comparison.

num

public double num()

Description copied from class: Item

Returns the double value.

Specified by:

num in class Item

Returns:

double value

prec

public int prec()

Description copied from class: Item

Returns the evaluation precedence.

Returns:

evaluation precedence

set

public void set(int pre)

Sets a single node.

Parameters:

pre - node to be set.

size

public int size()

Description copied from class: Item

Number of values, stored in the result instance.

Specified by:

size in interface Result

Overrides:

size in class Item

Returns:

number of values

str

public byte[] str()

Description copied from class: Item

Returns the literal value.

Specified by:

str in class Item

Returns:

literal value

toString

public java.lang.String toString()

Specified by:

toString in class Item