org.basex.query.ft
Class FTIndexAccess

java.lang.Object
  extended by org.basex.query.ExprInfo
      extended by org.basex.query.expr.Expr
          extended by org.basex.query.expr.Simple
              extended by org.basex.query.ft.FTIndexAccess

public final class FTIndexAccess
extends Simple

FTContains expression with index access.

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
 
Constructor Summary
FTIndexAccess(FTExpr ex, IndexContext ic)
          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.
 void plan(Serializer ser)
          Recursively sends the abstract syntax of this expression to the specified serializer.
 boolean sameAs(Expr cmp)
          Checks the current and specified expression for equality.
 String toString()
           
 
Methods inherited from class org.basex.query.expr.Simple
color, comp, uses
 
Methods inherited from class org.basex.query.expr.Expr
addText, atomic, checkCtx, checkDbl, checkItr, e, ebv, i, indexAccessible, indexEquivalent, removable, remove, returned, 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

FTIndexAccess

public FTIndexAccess(FTExpr ex,
                     IndexContext ic)
Constructor.

Parameters:
ex - contains, select and optional ignore expression
ic - index context
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

plan

public void plan(Serializer ser)
          throws IOException
Description copied from class: ExprInfo
Recursively sends the abstract syntax of this expression to the specified serializer.

Overrides:
plan in class Simple
Parameters:
ser - serializer
Throws:
IOException - I/O exception

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

sameAs

public boolean sameAs(Expr cmp)
Description copied from class: Expr
Checks the current and specified expression for equality.

Overrides:
sameAs in class Expr
Parameters:
cmp - expression to be compared
Returns:
result of check

toString

public String toString()
Specified by:
toString in class ExprInfo