org.basex.query.ft
Class FTNot

java.lang.Object
  org.basex.query.ExprInfo
      org.basex.query.expr.Expr
          org.basex.query.ft.FTExpr
              org.basex.query.ft.FTNot

public final class FTNot
extends FTExpr

FTUnaryNot expression.

Author:

Workgroup DBIS, University of Konstanz 2005-10, ISC License, Christian Gruen, Sebastian Gath

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.ft.FTExpr

expr

Constructor Summary

FTNot(FTExpr e)
Constructor.

Method Summary

FTItem	atomic(QueryContext ctx) This method is called by the sequential full-text evaluation.
FTExpr	comp(QueryContext ctx) Optimizes and compiles the expression.
boolean	indexAccessible(IndexContext ic) Checks if an index can be used for query evaluation.
FTIter	iter(QueryContext ctx) This method is called by the index-based full-text evaluation.
String	toString()
boolean	usesExclude() Checks if sub expressions of a mild not operator do not violate the grammar.

Methods inherited from class org.basex.query.ft.FTExpr

color, indexEquivalent, plan, removable, remove, returned, uses

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

addText, checkCtx, checkDbl, checkItr, duplicates, e, ebv, i, 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

FTNot

public FTNot(FTExpr e)

Constructor.

Parameters:

e - expression

Method Detail

comp

public FTExpr comp(QueryContext ctx)
            throws QueryException

Description copied from class: Expr

Optimizes and compiles the expression.

Overrides:

comp in class FTExpr

Parameters:

ctx - query context

Returns:

optimized Expression

Throws:

QueryException - query exception

atomic

public FTItem atomic(QueryContext ctx)
              throws QueryException

Description copied from class: FTExpr

This method is called by the sequential full-text evaluation.

Specified by:

atomic in class FTExpr

Parameters:

ctx - query context

Returns:

resulting item

Throws:

QueryException - query exception

iter

public FTIter iter(QueryContext ctx)
            throws QueryException

Description copied from class: FTExpr

This method is called by the index-based full-text evaluation.

Specified by:

iter in class FTExpr

Parameters:

ctx - query context

Returns:

resulting item

Throws:

QueryException - query exception

indexAccessible

public boolean indexAccessible(IndexContext ic)
                        throws QueryException

Description copied from class: Expr

Checks if an index can be used for query evaluation.

Overrides:

indexAccessible in class Expr

Parameters:

ic - index context

Returns:

true if an index can be used

Throws:

QueryException - query exception

usesExclude

public boolean usesExclude()

Description copied from class: FTExpr

Checks if sub expressions of a mild not operator do not violate the grammar.

Returns:

result of check

toString

public String toString()

Specified by:

toString in class ExprInfo