org.basex.query.xquery.expr
Class FTWords

java.lang.Object
  org.basex.query.xquery.expr.Expr
      org.basex.query.xquery.expr.FTWords

public final class FTWords
extends Expr

FTWords expression.

Author:

Workgroup DBIS, University of Konstanz 2005-07, ISC License, Christian Gruen

Field Summary

static int	ALL All words.
static int	ANY Any words.
static double	LOG Logarithmic base for calculating the score value.
static int	PHRASE Phrase search.

Fields inherited from class org.basex.query.xquery.expr.Expr

type

Constructor Summary

FTWords(Expr e, int m, Expr[] o)
Constructor.

Method Summary

Expr	comp(XQContext ctx) Optimizes and compiles the expression tree.
Item	eval(XQContext ctx) Evaluates the expression and returns the resulting item.
java.lang.String	info() Returns a string description of the expression.
java.lang.String	toString()

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

cls, d, e, i, n, node, s, size, str, u

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

ALL

public static final int ALL

All words.

See Also:

Constant Field Values

ANY

public static final int ANY

Any words.

See Also:

Constant Field Values

LOG

public static final double LOG

Logarithmic base for calculating the score value.

See Also:

Constant Field Values

PHRASE

public static final int PHRASE

Phrase search.

See Also:

Constant Field Values

Constructor Detail

FTWords

public FTWords(Expr e,
               int m,
               Expr[] o)

Constructor.

Parameters:

e - expression

m - search mode

o - occurrences

Method Detail

comp

public Expr comp(XQContext ctx)
          throws XQException

Description copied from class: Expr

Optimizes and compiles the expression tree.

Specified by:

comp in class Expr

Parameters:

ctx - query context

Returns:

optimized Expression

Throws:

XQException - evaluation exception

eval

public Item eval(XQContext ctx)
          throws XQException

Description copied from class: Expr

Evaluates the expression and returns the resulting item.

Specified by:

eval in class Expr

Parameters:

ctx - query context

Returns:

resulting item

Throws:

XQException - evaluation exception

info

public java.lang.String info()

Description copied from class: Expr

Returns a string description of the expression. Contrary to the Expr.toString() method, the current expressions aren't included in the output.

Specified by:

info in class Expr

Returns:

result of check

toString

public java.lang.String toString()

Specified by:

toString in class Expr