org.basex.query.expr
Class IterPred

java.lang.Object
  extended by org.basex.query.ExprInfo
      extended by org.basex.query.expr.Expr
          extended by org.basex.query.expr.Preds
              extended by org.basex.query.expr.Pred
                  extended by org.basex.query.expr.IterPred

public final class IterPred
extends Pred

Iterative predicate expression. Supports one predicate.

Author:
Workgroup DBIS, University of Konstanz 2005-10, ISC License, Dennis Stratmann

Nested Class Summary
 
Nested classes/interfaces inherited from class org.basex.query.expr.Expr
Expr.Use
 
Field Summary
 
Fields inherited from class org.basex.query.expr.Preds
pred
 
Constructor Summary
IterPred(Expr r, Expr[] p, Pos ps, boolean l)
          Constructor.
 
Method Summary
 Iter iter(QueryContext ctx)
          Evaluates the expression and returns an iterator on the resulting items.
 
Methods inherited from class org.basex.query.expr.Pred
comp, plan, removable, remove, toString, uses
 
Methods inherited from class org.basex.query.expr.Preds
color
 
Methods inherited from class org.basex.query.expr.Expr
addText, atomic, checkCtx, checkDbl, checkItr, duplicates, e, ebv, i, indexAccessible, indexEquivalent, returned, sameAs, size, test, v
 
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

IterPred

public IterPred(Expr r,
                Expr[] p,
                Pos ps,
                boolean l)
Constructor.

Parameters:
r - root expression
p - predicate
ps - position predicate; may equal the first predicate
l - true if predicate has a last function
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 Pred
Parameters:
ctx - query context
Returns:
resulting item