org.basex.query.path
Class SimpleIterStep
java.lang.Object
org.basex.query.ExprInfo
org.basex.query.expr.Expr
org.basex.query.expr.Preds
org.basex.query.path.Step
org.basex.query.path.SimpleIterStep
public final class SimpleIterStep
- extends Step
Iterative step expression without predicates.
- Author:
- Workgroup DBIS, University of Konstanz 2005-10, ISC License, Christian Gruen
Nested classes/interfaces inherited from class org.basex.query.expr.Expr |
Expr.Use |
Fields inherited from class org.basex.query.path.Step |
axis, test |
Fields inherited from class org.basex.query.expr.Preds |
pred |
Methods inherited from class org.basex.query.expr.Expr |
addText, atomic, checkCtx, checkDbl, checkItr, duplicates, e, ebv, i, indexAccessible, indexEquivalent, size, test, v |
SimpleIterStep
public SimpleIterStep(Axis a,
Test t)
- Constructor.
- Parameters:
a
- axist
- node test
comp
public Expr comp(QueryContext ctx)
throws QueryException
- Description copied from class:
Expr
- Optimizes and compiles the expression.
- Overrides:
comp
in class Step
- Parameters:
ctx
- query context
- Returns:
- optimized Expression
- Throws:
QueryException
- query exception
iter
public NodeIter iter(QueryContext ctx)
throws QueryException
- 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 Step
- Parameters:
ctx
- query context
- Returns:
- resulting item
- Throws:
QueryException
- query exception