org.basex.query.item

Class Dbl

java.lang.Object

org.basex.data.ExprInfo

org.basex.query.expr.Expr

org.basex.query.item.Value

org.basex.query.item.Item

org.basex.query.item.Dbl

All Implemented Interfaces:

java.lang.Iterable<Item>

public final class Dbl
extends Item

Double item.

Author:

BaseX Team 2005-12, BSD License, Christian Gruen

Nested Class Summary

Nested classes/interfaces inherited from class org.basex.query.expr.Expr

Expr.Use

Field Summary

Fields

Modifier and Type	Field and Description
static Dbl	NAN Invalid value.

Fields inherited from class org.basex.query.item.Item

UNDEF

Fields inherited from class org.basex.query.item.Value

type

Method Summary

Methods

Modifier and Type	Method and Description
boolean	bool(InputInfo ii) Returns a boolean representation of the value.
double	dbl(InputInfo ii) Returns a double representation of the value.
java.math.BigDecimal	dec(InputInfo ii) Returns a decimal representation of the value.
int	diff(InputInfo ii, Item it) Returns the difference between the current and the specified item.
boolean	eq(InputInfo ii, Item it) Checks the items for equality.
float	flt(InputInfo ii) Returns a float representation of the value.
static Dbl	get(byte[] v, InputInfo ii) Returns an instance of this class.
static Dbl	get(double d) Returns an instance of this class.
int	hash(InputInfo ii) Returns a hash code for this value.
long	itr(InputInfo ii) Returns an integer (long) representation of the value.
boolean	sameAs(Expr cmp) Compares the current and specified expression for equality.
byte[]	string(InputInfo ii) Returns a string representation of the value.
java.lang.Double	toJava() Returns a Java representation of the value.
java.lang.String	toString()

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

comparable, ebv, equiv, homogenous, input, isItem, item, itemAt, iter, iterable, plan, score, score, serialize, size, test, type, writeTo, xdmInfo

Methods inherited from class org.basex.query.item.Value

cache, comp, count, data, description, info, isValue, iter, iterator, removable, remove, uses, value

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

addText, compEbv, hasFreeVars, indexAccessible, indexEquivalent, isEmpty, isFunction, isVacuous, markTailCalls

Methods inherited from class java.lang.Object

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

Field Detail

NAN

public static final Dbl NAN

Invalid value.

Method Detail

get

public static Dbl get(double d)

Returns an instance of this class.

Parameters:

d - value

Returns:

instance

get

public static Dbl get(byte[] v,
      InputInfo ii)
               throws QueryException

Returns an instance of this class.

Parameters:

v - value

ii - input info

Returns:

instance

Throws:

QueryException - query exception

string

public byte[] string(InputInfo ii)

Description copied from class: Item

Returns a string representation of the value.

Parameters:

ii - input info, use null if none is available

Returns:

string value

bool

public boolean bool(InputInfo ii)

Description copied from class: Item

Returns a boolean representation of the value.

Overrides:

bool in class Item

Parameters:

ii - input info

Returns:

boolean value

itr

public long itr(InputInfo ii)

Description copied from class: Item

Returns an integer (long) representation of the value.

Parameters:

ii - input info

Returns:

long value

flt

public float flt(InputInfo ii)

Description copied from class: Item

Returns a float representation of the value.

Parameters:

ii - input info

Returns:

float value

dbl

public double dbl(InputInfo ii)

Description copied from class: Item

Returns a double representation of the value.

Parameters:

ii - input info

Returns:

double value

dec

public java.math.BigDecimal dec(InputInfo ii)
                         throws QueryException

Description copied from class: Item

Returns a decimal representation of the value.

Overrides:

dec in class Item

Parameters:

ii - input info

Returns:

decimal value

Throws:

QueryException - query exception

eq

public boolean eq(InputInfo ii,
         Item it)
           throws QueryException

Description copied from class: Item

Checks the items for equality.

Specified by:

eq in class Item

Parameters:

ii - input info

it - item to be compared

Returns:

result of check

Throws:

QueryException - query exception

diff

public int diff(InputInfo ii,
       Item it)
         throws QueryException

Description copied from class: Item

Returns the difference between the current and the specified item.

Overrides:

diff in class Item

Parameters:

ii - input info

it - item to be compared

Returns:

difference

Throws:

QueryException - query exception

toJava

public java.lang.Double toJava()

Description copied from class: Value

Returns a Java representation of the value.

Specified by:

toJava in class Value

Returns:

Java object

sameAs

public boolean sameAs(Expr cmp)

Description copied from class: Expr

Compares the current and specified expression for equality.

Overrides:

sameAs in class Expr

Parameters:

cmp - expression to be compared

Returns:

result of check

hash

public final int hash(InputInfo ii)

Description copied from class: Value

Returns a hash code for this value.

Overrides:

hash in class Item

Parameters:

ii - input info

Returns:

hash code

toString

public final java.lang.String toString()

Specified by:

toString in class ExprInfo