org.basex.query.xquery.util
Class Var

java.lang.Object
  org.basex.query.xquery.util.Var

All Implemented Interfaces:

java.lang.Cloneable

public final class Var
extends java.lang.Object
implements java.lang.Cloneable

Variable.

Author:

Workgroup DBIS, University of Konstanz 2005-07, ISC License, Christian Gruen

Field Summary

Expr	expr Variable expressions.
Item	item Variable results.
QNm	name Variable name.
boolean	score Scoring flag.
SeqType	type Data type.

Constructor Summary

Var(QNm n)
Constructor.

Var(QNm n, boolean s)
Constructor.

Var(QNm n, SeqType t)
Constructor.

Method Summary

Var	clone()
void	comp(XQContext ctx) Compiles the variable.
Var	expr(Expr e, XQContext ctx) Sets the specified expression.
Var	fun(Item it, XQContext ctx) Sets the specified expression.
Var	item(Item it, XQContext ctx) Sets the specified expression.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

expr

public Expr expr

Variable expressions.

item

public Item item

Variable results.

name

public QNm name

Variable name.

score

public boolean score

Scoring flag.

type

public SeqType type

Data type.

Constructor Detail

Var

public Var(QNm n)

Constructor.

Parameters:

n - variable name

Var

public Var(QNm n,
           boolean s)

Constructor.

Parameters:

n - variable name

s - scoring flag

Var

public Var(QNm n,
           SeqType t)

Constructor.

Parameters:

n - variable name

t - data type

Method Detail

clone

public Var clone()

Overrides:

clone in class java.lang.Object

comp

public void comp(XQContext ctx)
          throws XQException

Compiles the variable.

Parameters:

ctx - xquery context

Throws:

XQException - xquery exception

expr

public Var expr(Expr e,
                XQContext ctx)
         throws XQException

Sets the specified expression.

Parameters:

e - expression to be set

ctx - xquery context

Returns:

self reference

Throws:

XQException - evaluation exception

fun

public Var fun(Item it,
               XQContext ctx)
        throws XQException

Sets the specified expression.

Parameters:

ctx - xquery context

it - item to be set

Returns:

clone

Throws:

XQException - evaluation exception

item

public Var item(Item it,
                XQContext ctx)
         throws XQException

Sets the specified expression.

Parameters:

ctx - xquery context

it - item to be set

Returns:

self reference

Throws:

XQException - evaluation exception

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object