org.basex.query.xquery.item
Class Bln

java.lang.Object
  org.basex.query.xquery.expr.Expr
      org.basex.query.xquery.item.Item
          org.basex.query.xquery.item.Bln

public final class Bln
extends Item

Boolean item.

Author:

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

Field Summary

static Bln	FALSE Static boolean item (use with care).
static Bln	TRUE Static boolean item (use with care).

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

type

Method Summary

boolean	bool() Returns a boolean representation of the item.
static boolean	check(byte[] str) Checks if the specified value is a correct boolean string.
double	dbl() Returns a double representation of the item.
int	diff(Item it) Returns the difference between the current and the specified item.
boolean	eq(Item it) Checks the items for equality.
float	flt() Returns a float representation of the item.
static Bln	get(boolean b) Returns a static item instance.
long	itr() Returns a numeric (long) representation of the item.
byte[]	str() Returns an atomized string.
java.lang.String	toString()

Methods inherited from class org.basex.query.xquery.item.Item

castErr, comp, eval, i, info, iter, serialize, serialize, size

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

cls, d, e, n, node, s, u

Methods inherited from class java.lang.Object

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

Field Detail

FALSE

public static final Bln FALSE

Static boolean item (use with care).

TRUE

public static final Bln TRUE

Static boolean item (use with care).

Method Detail

bool

public boolean bool()

Description copied from class: Item

Returns a boolean representation of the item.

Overrides:

bool in class Item

Returns:

boolean value

check

public static boolean check(byte[] str)
                     throws XQException

Checks if the specified value is a correct boolean string.

Parameters:

str - string to be checked

Returns:

result of check

Throws:

XQException - evaluation exception

dbl

public double dbl()

Description copied from class: Item

Returns a double representation of the item.

Overrides:

dbl in class Item

Returns:

double value

diff

public int diff(Item it)
         throws XQException

Description copied from class: Item

Returns the difference between the current and the specified item.

Overrides:

diff in class Item

Parameters:

it - item to be compared.

Returns:

difference

Throws:

XQException - evaluation exception

eq

public boolean eq(Item it)
           throws XQException

Description copied from class: Item

Checks the items for equality.

Specified by:

eq in class Item

Parameters:

it - item to be compared.

Returns:

result of check

Throws:

XQException - evaluation exception

flt

public float flt()

Description copied from class: Item

Returns a float representation of the item.

Overrides:

flt in class Item

Returns:

float value

get

public static Bln get(boolean b)

Returns a static item instance.

Parameters:

b - boolean value

Returns:

item

itr

public long itr()

Description copied from class: Item

Returns a numeric (long) representation of the item.

Overrides:

itr in class Item

Returns:

long value

str

public byte[] str()

Description copied from class: Expr

Returns an atomized string.

Overrides:

str in class Expr

Returns:

string representation

toString

public java.lang.String toString()

Overrides:

toString in class Item