org.basex.query.value.item
Class Dbl

java.lang.Object
  extended by org.basex.data.ExprInfo
      extended by org.basex.query.expr.Expr
          extended by org.basex.query.value.Value
              extended by org.basex.query.value.item.Item
                  extended by org.basex.query.value.item.ANum
                      extended by org.basex.query.value.item.Dbl
All Implemented Interfaces:
java.lang.Iterable<Item>

public final class Dbl
extends ANum

Double item (xs:double).

Author:
BaseX Team 2005-12, BSD License, Christian Gruen

Nested Class Summary
 
Nested classes/interfaces inherited from class org.basex.query.expr.Expr
Expr.Flag
 
Field Summary
static Dbl NAN
          Value "NaN".
 
Fields inherited from class org.basex.query.value.item.Item
score, UNDEF
 
Fields inherited from class org.basex.query.value.Value
type
 
Method Summary
 boolean bool(InputInfo ii)
          Returns a boolean representation of the value.
 double dbl()
          Returns an double representation of the value.
 java.math.BigDecimal dec(InputInfo ii)
          Returns a decimal representation of the value.
 int diff(Item it, Collation coll, InputInfo ii)
          Returns the difference between the current and the specified item.
 boolean eq(Item it, Collation coll, InputInfo ii)
          Checks the items for equality.
 float flt()
          Returns an 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.
 long itr()
          Returns an integer (long) representation of the value.
static double parse(byte[] val, InputInfo ii)
          Converts the given token into a double value.
 boolean sameAs(Expr cmp)
          Compares the current and specified expression for equality.
 byte[] string()
          Returns a string representation of the value.
 java.lang.Double toJava()
          Returns a Java representation of the value.
 
Methods inherited from class org.basex.query.value.item.ANum
dbl, flt, hash, itr, string, test, toString
 
Methods inherited from class org.basex.query.value.item.Item
castErr, comparable, description, ebv, equiv, homogeneous, input, isItem, item, itemAt, iter, iterable, materialize, plan, score, score, size, type, typeId, writeTo, xdmInfo
 
Methods inherited from class org.basex.query.value.Value
accept, cache, checkUp, compile, copy, count, data, exprSize, has, inline, isValue, iter, iterator, removable, serialize, value
 
Methods inherited from class org.basex.query.expr.Expr
addText, compEbv, copy, hasFreeVars, indexAccessible, indexEquivalent, inlineAll, isEmpty, isFunction, isVacuous, markTailCalls, optimize, uses, visitAll
 
Methods inherited from class org.basex.data.ExprInfo
addPlan, addPlan, info, planAttr, planElem
 
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
Value "NaN".

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()
Description copied from class: ANum
Returns a string representation of the value.

Specified by:
string in class ANum
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()
Description copied from class: ANum
Returns an integer (long) representation of the value.

Specified by:
itr in class ANum
Returns:
long value

flt

public float flt()
Description copied from class: ANum
Returns an float representation of the value.

Specified by:
flt in class ANum
Returns:
float value

dbl

public double dbl()
Description copied from class: ANum
Returns an double representation of the value.

Specified by:
dbl in class ANum
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(Item it,
                  Collation coll,
                  InputInfo ii)
           throws QueryException
Description copied from class: Item
Checks the items for equality.

Specified by:
eq in class Item
Parameters:
it - item to be compared
coll - collation
ii - input info
Returns:
result of check
Throws:
QueryException - query exception

diff

public int diff(Item it,
                Collation coll,
                InputInfo ii)
         throws QueryException
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
coll - query context
ii - input info
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

parse

public static double parse(byte[] val,
                           InputInfo ii)
                    throws QueryException
Converts the given token into a double value.

Parameters:
val - value to be converted
ii - input info
Returns:
double value
Throws:
QueryException - query exception