org.basex.query.xquery.path
Class IterStep

java.lang.Object
  org.basex.query.ExprInfo
      org.basex.query.xquery.expr.Expr
          org.basex.query.xquery.expr.Arr
              org.basex.query.xquery.path.Step
                  org.basex.query.xquery.path.IterStep

public final class IterStep
extends Step

Path expression. Mustn't be called with more than one predicate.

Author:

Workgroup DBIS, University of Konstanz 2005-08, ISC License, Christian Gruen

Nested Class Summary

Nested classes/interfaces inherited from class org.basex.query.xquery.expr.Expr

Expr.Return, Expr.Using

Field Summary

Fields inherited from class org.basex.query.xquery.path.Step

axis, test

Fields inherited from class org.basex.query.xquery.expr.Arr

expr

Constructor Summary

IterStep(Axis a, Test t, Expr[] p, boolean last, boolean num)
Constructor.

Method Summary

NodeIter

iter(XQContext ctx) Evaluates the expression and returns an iterator on the resulting items.

Methods inherited from class org.basex.query.xquery.path.Step

comp, plan, returned, simple, toString, uses

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

e, i

Methods inherited from class org.basex.query.ExprInfo

color, info, name

Methods inherited from class java.lang.Object

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

Constructor Detail

IterStep

public IterStep(Axis a,
                Test t,
                Expr[] p,
                boolean last,
                boolean num)

Constructor.

Parameters:

a - axis

t - node test

p - predicates

last - lastFlag is true if predicate has a last function

num - numberFlag is true if predicate has a numeric value

Method Detail

iter

public NodeIter iter(XQContext ctx)
              throws XQException

Description copied from class: Expr

Evaluates the expression and returns an iterator on the resulting items.

Overrides:

iter in class Step

Parameters:

ctx - query context

Returns:

resulting item

Throws:

XQException - evaluation exception