org.basex.query.func
Class FNSeq

java.lang.Object
  extended by org.basex.query.ExprInfo
      extended by org.basex.query.expr.Expr
          extended by org.basex.query.expr.Arr
              extended by org.basex.query.func.Fun
                  extended by org.basex.query.func.FNSeq

public final class FNSeq
extends Fun

Sequence functions.

Author:
Workgroup DBIS, University of Konstanz 2005-10, ISC License, Christian Gruen

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.func.Fun
func
 
Fields inherited from class org.basex.query.expr.Arr
expr
 
Constructor Summary
FNSeq()
           
 
Method Summary
 Item atomic(QueryContext ctx)
          Evaluates the expression and returns the resulting item or a null reference.
static boolean deep(Iter iter1, Iter iter2)
          Checks items for deep equality.
 Iter iter(QueryContext ctx)
          Evaluates the expression and returns an iterator on the resulting items.
 
Methods inherited from class org.basex.query.func.Fun
c, comp, info, init, plan, returned, toString
 
Methods inherited from class org.basex.query.expr.Arr
duplicates, indexEquivalent, removable, remove, uses
 
Methods inherited from class org.basex.query.expr.Expr
addText, checkCtx, checkDbl, checkItr, e, ebv, i, indexAccessible, sameAs, size, test, v
 
Methods inherited from class org.basex.query.ExprInfo
color, name
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

FNSeq

public FNSeq()
Method Detail

iter

public Iter 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 Expr
Parameters:
ctx - query context
Returns:
resulting item
Throws:
QueryException - query exception

atomic

public Item atomic(QueryContext ctx)
            throws QueryException
Description copied from class: Expr
Evaluates the expression and returns the resulting item or a null reference. If this method is not overwritten, Expr.iter(org.basex.query.QueryContext) must be implemented.

Overrides:
atomic in class Expr
Parameters:
ctx - query context
Returns:
iterator
Throws:
QueryException - query exception

deep

public static boolean deep(Iter iter1,
                           Iter iter2)
                    throws QueryException
Checks items for deep equality.

Parameters:
iter1 - first iterator
iter2 - second iterator
Returns:
result of check
Throws:
QueryException - query exception