org.basex.query.ft
Class FTIndexAccess

java.lang.Object
  org.basex.query.ExprInfo
      org.basex.query.expr.Expr
          org.basex.query.expr.Simple
              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