org.exist.xquery.value
Class DoubleValue

java.lang.Object
  org.exist.xquery.value.AtomicValue
      org.exist.xquery.value.ComputableValue
          org.exist.xquery.value.NumericValue
              org.exist.xquery.value.DoubleValue

All Implemented Interfaces:

java.lang.Comparable, Indexable, Item, Sequence

public class DoubleValue

extends NumericValue

implements Indexable

Field Summary

static DoubleValue	NaN
static DoubleValue	ZERO

Fields inherited from class org.exist.xquery.value.AtomicValue

EMPTY_VALUE

Fields inherited from interface org.exist.xquery.value.Sequence

EMPTY_SEQUENCE

Constructor Summary

DoubleValue(AtomicValue otherValue)

DoubleValue(double value)

Method Summary

NumericValue	abs()
NumericValue	ceiling()
int	compareTo(java.lang.Object o)
int	conversionPreference(java.lang.Class javaClass) Returns a preference indicator, indicating the preference of a value to be converted into the given Java class.
AtomicValue	convertTo(int requiredType) Convert this item into an atomic value, whose type corresponds to the specified target type.
ComputableValue	div(ComputableValue other)
boolean	effectiveBooleanValue() Get the effective boolean value of this sequence.
NumericValue	floor()
double	getDouble()
int	getInt()
long	getLong()
int	getSerializedSize() size writen by #serialize(byte[] data, int offset)
java.lang.String	getStringValue() Return the string value of this item (see the definition of string value in XPath).
int	getType() Returns the type of the Indexable as one of the constants defined in Type.
double	getValue()
IntegerValue	idiv(NumericValue other)
boolean	isNaN()
Item	itemAt(int pos) Returns the item located at the specified position within this sequence.
AtomicValue	max(java.text.Collator collator, AtomicValue other)
AtomicValue	min(java.text.Collator collator, AtomicValue other)
ComputableValue	minus(ComputableValue other)
NumericValue	mod(NumericValue other)
ComputableValue	mult(ComputableValue other)
NumericValue	negate()
ComputableValue	plus(ComputableValue other)
NumericValue	round()
NumericValue	round(IntegerValue precision)
byte[]	serialize(short collectionId, boolean caseSensitive) Serialize the value plus collection and possibly element information to an array of bytes.
byte[]	serializeValue(int offset, boolean caseSensitive) Serialize for the persistant storage
void	setValue(double val)
java.lang.Object	toJavaObject(java.lang.Class target) Convert the value into an instance of the specified Java class.

Methods inherited from class org.exist.xquery.value.NumericValue

compareTo, compareTo

Methods inherited from class org.exist.xquery.value.AtomicValue

add, addAll, atomize, clearContext, contains, copyTo, dump, endsWith, getCardinality, getDocumentSet, getItemType, getLength, isCached, isPersistentSet, iterate, removeDuplicates, setIsCached, setSelfAsContext, startsWith, toNodeSet, toSAX, toSequence, toString, unorderedIterator

Methods inherited from class java.lang.Object

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

Field Detail

NaN

public static final DoubleValue NaN

ZERO

public static final DoubleValue ZERO

Constructor Detail

DoubleValue

public DoubleValue(double value)

DoubleValue

public DoubleValue(AtomicValue otherValue)
            throws XPathException

Method Detail

getType

public int getType()

Description copied from interface: Indexable

Returns the type of the Indexable as one of the constants defined in Type.

Specified by:

getType in interface Indexable

Overrides:

getType in class AtomicValue

getStringValue

public java.lang.String getStringValue()

Description copied from interface: Item

Return the string value of this item (see the definition of string value in XPath).

Specified by:

getStringValue in interface Item

Specified by:

getStringValue in class NumericValue

getValue

public double getValue()

itemAt

public Item itemAt(int pos)

Description copied from interface: Sequence

Returns the item located at the specified position within this sequence. Items are counted beginning at 0.

Specified by:

itemAt in interface Sequence

Overrides:

itemAt in class AtomicValue

isNaN

public boolean isNaN()

Overrides:

isNaN in class NumericValue

convertTo

public AtomicValue convertTo(int requiredType)
                      throws XPathException

Description copied from interface: Item

Convert this item into an atomic value, whose type corresponds to the specified target type. requiredType should be one of the type constants defined in Type. An XPathException is thrown if the conversion is impossible.

Specified by:

convertTo in interface Item

Specified by:

convertTo in class NumericValue

Throws:

XPathException

effectiveBooleanValue

public boolean effectiveBooleanValue()
                              throws XPathException

Description copied from interface: Sequence

Get the effective boolean value of this sequence. Will be false if the sequence is empty, true otherwise.

Specified by:

effectiveBooleanValue in interface Sequence

Overrides:

effectiveBooleanValue in class AtomicValue

Throws:

XPathException

getDouble

public double getDouble()
                 throws XPathException

Overrides:

getDouble in class NumericValue

Throws:

XPathException

getInt

public int getInt()
           throws XPathException

Overrides:

getInt in class NumericValue

Throws:

XPathException

getLong

public long getLong()
             throws XPathException

Overrides:

getLong in class NumericValue

Throws:

XPathException

setValue

public void setValue(double val)

ceiling

public NumericValue ceiling()
                     throws XPathException

Specified by:

ceiling in class NumericValue

Throws:

XPathException

floor

public NumericValue floor()
                   throws XPathException

Specified by:

floor in class NumericValue

Throws:

XPathException

round

public NumericValue round()
                   throws XPathException

Specified by:

round in class NumericValue

Throws:

XPathException

round

public NumericValue round(IntegerValue precision)
                   throws XPathException

Specified by:

round in class NumericValue

Throws:

XPathException

minus

public ComputableValue minus(ComputableValue other)
                      throws XPathException

Specified by:

minus in class ComputableValue

Throws:

XPathException

plus

public ComputableValue plus(ComputableValue other)
                     throws XPathException

Specified by:

plus in class ComputableValue

Throws:

XPathException

mult

public ComputableValue mult(ComputableValue other)
                     throws XPathException

Specified by:

mult in class ComputableValue

Throws:

XPathException

div

public ComputableValue div(ComputableValue other)
                    throws XPathException

Specified by:

div in class ComputableValue

Throws:

XPathException

idiv

public IntegerValue idiv(NumericValue other)
                  throws XPathException

Specified by:

idiv in class NumericValue

Throws:

XPathException

mod

public NumericValue mod(NumericValue other)
                 throws XPathException

Specified by:

mod in class NumericValue

Throws:

XPathException

negate

public NumericValue negate()
                    throws XPathException

Specified by:

negate in class NumericValue

Throws:

XPathException

abs

public NumericValue abs()
                 throws XPathException

Specified by:

abs in class NumericValue

Throws:

XPathException

max

public AtomicValue max(java.text.Collator collator,
                       AtomicValue other)
                throws XPathException

Specified by:

max in class NumericValue

Throws:

XPathException

min

public AtomicValue min(java.text.Collator collator,
                       AtomicValue other)
                throws XPathException

Specified by:

min in class NumericValue

Throws:

XPathException

conversionPreference

public int conversionPreference(java.lang.Class javaClass)

Description copied from interface: Sequence

Returns a preference indicator, indicating the preference of a value to be converted into the given Java class. Low numbers mean that the value can be easily converted into the given class.

Specified by:

conversionPreference in interface Item

Overrides:

conversionPreference in class AtomicValue

toJavaObject

public java.lang.Object toJavaObject(java.lang.Class target)
                              throws XPathException

Description copied from interface: Sequence

Convert the value into an instance of the specified Java class.

Specified by:

toJavaObject in interface Item

Overrides:

toJavaObject in class AtomicValue

Throws:

XPathException

serialize

public byte[] serialize(short collectionId,
                        boolean caseSensitive)

Deprecated.

Description copied from interface: Indexable

Serialize the value plus collection and possibly element information to an array of bytes.

Specified by:

serialize in interface Indexable

Parameters:

collectionId - the collection id to use

caseSensitive - only relevant for string values: if set to false, strings should be serialized in lower case

Returns:

See Also:

org.exist.storage.Indexable#serialize(short)

serializeValue

public byte[] serializeValue(int offset,
                             boolean caseSensitive)

Serialize for the persistant storage

Specified by:

serializeValue in interface Indexable

Returns:

the size actually writen in the array argument

See Also:

Indexable.serializeValue(int, boolean)

getSerializedSize

public int getSerializedSize()

size writen by #serialize(byte[] data, int offset)

compareTo

public int compareTo(java.lang.Object o)

Specified by:

compareTo in interface java.lang.Comparable