org.basex.query.path
Class SingleIterPath

java.lang.Object
  org.basex.query.ExprInfo
      org.basex.query.expr.Expr
          org.basex.query.path.Path
              org.basex.query.path.AxisPath
                  org.basex.query.path.SingleIterPath

public final class SingleIterPath
extends AxisPath

Iterative path expression.

Author:

Workgroup DBIS, University of Konstanz 2005-09, ISC License, Dennis Stratmann

Field Summary

Fields inherited from class org.basex.query.path.AxisPath

step

Fields inherited from class org.basex.query.path.Path

root

Constructor Summary

SingleIterPath(Expr r, Step... s)
Constructor.

Method Summary

boolean	duplicates(QueryContext ctx) Returns true if the expression might yield duplicates and unsorted results.
Iter	iter(QueryContext ctx) Evaluates the expression and returns an iterator on the resulting items.

Methods inherited from class org.basex.query.path.AxisPath

addPred, addText, comp, get, invertPath, plan, removable, remove, returned, sameAs, size, toString, uses

Methods inherited from class org.basex.query.path.Path

color, toString

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

atomic, checkCtx, checkDbl, checkItr, e, ebv, i, indexAccessible, indexEquivalent, test

Methods inherited from class org.basex.query.ExprInfo

info, name

Methods inherited from class java.lang.Object

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

Constructor Detail

SingleIterPath

public SingleIterPath(Expr r,
                      Step... s)

Constructor.

Parameters:

r - root expression

s - location steps

Method Detail

iter

public Iter iter(QueryContext ctx)

Description copied from class: Expr

Evaluates the expression and returns an iterator on the resulting items. If this method is not overwritten, Expr.atomic(org.basex.query.QueryContext) must be implemented.

Overrides:

iter in class AxisPath

Parameters:

ctx - query context

Returns:

resulting item

duplicates

public boolean duplicates(QueryContext ctx)

Description copied from class: Expr

Returns true if the expression might yield duplicates and unsorted results.

Overrides:

duplicates in class Expr

Parameters:

ctx - query context

Returns:

result of check