org.basex.query.xquery.expr
Class FTSelect

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

All Implemented Interfaces:

java.lang.Cloneable

public final class FTSelect
extends Expr
implements java.lang.Cloneable

FTSelect expression.

Author:

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

Field Summary

boolean	content Entire content flag.
boolean	different Different flag.
Expr[]	dist Distance occurrences.
int	dunit Distance unit.
boolean	end End flag.
Expr	expr Expression.
boolean	ordered Ordered flag.
static int	PARAGRAPHS Paragraphs unit.
IntList[]	pos Position list.
boolean	same Same flag.
int	sdunit Same/different unit.
static int	SENTENCES Sentences unit.
int	size Number of entries.
boolean	start Start flag.
TokenList	term Term list.
Expr	weight Weight.
Expr	window Window.
static int	WORDS Word unit.
int	wunit Window unit.

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

type

Constructor Summary

FTSelect(Expr e)
Constructor.

Method Summary

FTOptions	clone()
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

content

public boolean content

Entire content flag.

different

public boolean different

Different flag.

dist

public Expr[] dist

Distance occurrences.

dunit

public int dunit

Distance unit.

end

public boolean end

End flag.

expr

public Expr expr

Expression.

ordered

public boolean ordered

Ordered flag.

PARAGRAPHS

public static final int PARAGRAPHS

Paragraphs unit.

See Also:

Constant Field Values

pos

public IntList[] pos

Position list.

same

public boolean same

Same flag.

sdunit

public int sdunit

Same/different unit.

SENTENCES

public static final int SENTENCES

Sentences unit.

See Also:

Constant Field Values

size

public int size

Number of entries.

start

public boolean start

Start flag.

term

public TokenList term

Term list.

weight

public Expr weight

Weight.

window

public Expr window

Window.

WORDS

public static final int WORDS

Word unit.

See Also:

Constant Field Values

wunit

public int wunit

Window unit.

Constructor Detail

FTSelect

public FTSelect(Expr e)

Constructor.

Parameters:

e - expression

Method Detail

clone

public FTOptions clone()

Overrides:

clone in class java.lang.Object

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