org.treetank.service.xml.xpath.expr

Class VarRefExpr

java.lang.Object

org.treetank.axis.AbsAxis

org.treetank.service.xml.xpath.expr.AbsExpression

org.treetank.service.xml.xpath.expr.VarRefExpr

All Implemented Interfaces:

Iterable<Long>, Iterator<Long>

public class VarRefExpr
extends AbsExpression

VarRefExpr

Reference to the current item of the variable expression.

Constructor Summary

Constructors

Constructor and Description
VarRefExpr(INodeReadTrx rtx, VariableAxis mVariable) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
AtomicValue	evaluate() Performs the expression dependent evaluation of the expression.
void	update(long pVarKey) Updating an expression with a key

Methods inherited from class org.treetank.service.xml.xpath.expr.AbsExpression

hasNext, reset

Methods inherited from class org.treetank.axis.AbsAxis

addAtomicToItemList, close, getItemList, getNode, getStartKey, isSelfIncluded, iterator, moveTo, next, remove, resetToLastKey, resetToStartKey

Methods inherited from class java.lang.Object

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

Constructor Detail

VarRefExpr

public VarRefExpr(INodeReadTrx rtx,
          VariableAxis mVariable)

Constructor. Initializes the internal state.

Parameters:

rtx - Exclusive (immutable) trx to iterate with.

mVariable - Reference the variable expression that computes the items the variable holds.

Method Detail

update

public void update(long pVarKey)

Updating an expression with a key

Parameters:

pVarKey - as update

evaluate

public AtomicValue evaluate()

Performs the expression dependent evaluation of the expression. (Template method)

Specified by:

evaluate in class AbsExpression