org.basex.query.ft

Class FTOr

java.lang.Object

org.basex.data.ExprInfo

org.basex.query.expr.Expr

org.basex.query.expr.ParseExpr

org.basex.query.ft.FTExpr

org.basex.query.ft.FTOr

public final class FTOr
extends FTExpr

FTOr expression.

Author:

BaseX Team 2005-12, BSD 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

Fields inherited from class org.basex.query.expr.ParseExpr

input, size, type

Constructor Summary

Constructors

Constructor and Description
FTOr(InputInfo ii, FTExpr[] e) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
FTExpr	comp(QueryContext ctx) Compiles and optimizes the expression, assigns data types and cardinalities.
boolean	indexAccessible(IndexContext ic) Checks if an expression can be rewritten to an index access.
FTNode	item(QueryContext ctx, InputInfo ii) This method is called by the sequential full-text evaluation.
FTIter	iter(QueryContext ctx) This method is called by the index-based full-text evaluation.
java.lang.String	toString()

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

count, indexEquivalent, plan, removable, remove, uses

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

checkBln, checkColl, checkCreate, checkCtx, checkDbl, checkDBNode, checkEStr, checkEStr, checkIO, checkItem, checkItr, checkItr, checkMap, checkNode, checkNoEmpty, checkStr, checkType, checkUp, checkUp, checkWrite, compBln, ebv, optPre, preEval, size, test, type, value

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

addText, compEbv, hasFreeVars, isEmpty, isFunction, isItem, isVacuous, isValue, iterable, markTailCalls, sameAs

Methods inherited from class org.basex.data.ExprInfo

description, info

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

FTOr

public FTOr(InputInfo ii,
    FTExpr[] e)

Constructor.

Parameters:

ii - input info

e - expression list

Method Detail

comp

public FTExpr comp(QueryContext ctx)
            throws QueryException

Description copied from class: Expr

Compiles and optimizes the expression, assigns data types and cardinalities.

Overrides:

comp in class FTExpr

Parameters:

ctx - query context

Returns:

optimized expression

Throws:

QueryException - query exception

item

public FTNode item(QueryContext ctx,
          InputInfo ii)
            throws QueryException

Description copied from class: FTExpr

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

Specified by:

item in class FTExpr

Parameters:

ctx - query context

ii - input info

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 expression can be rewritten to an index access. If this method is implemented, Expr.indexEquivalent(org.basex.query.util.IndexContext) must be implemented as well.

Overrides:

indexAccessible in class Expr

Parameters:

ic - index context

Returns:

true if an index can be used

Throws:

QueryException - query exception

toString

public java.lang.String toString()

Specified by:

toString in class ExprInfo