com.bigdata.rdf.internal.impl.literal

Class XSDNumericIV<V extends BigdataLiteral>

java.lang.Object

com.bigdata.rdf.internal.impl.AbstractIV<V,T>

com.bigdata.rdf.internal.impl.AbstractInlineIV<V,T>

com.bigdata.rdf.internal.impl.literal.AbstractLiteralIV<V,T>

com.bigdata.rdf.internal.impl.literal.NumericIV<V,Number>

com.bigdata.rdf.internal.impl.literal.XSDNumericIV<V>

All Implemented Interfaces:

InlineLiteralIV<V,Number>, IV<V,Number>, IVCache<V,Number>, Serializable, Comparable<IV>, org.openrdf.model.Literal, org.openrdf.model.Value

public class XSDNumericIV<V extends BigdataLiteral>
extends NumericIV<V,Number>
implements org.openrdf.model.Literal

Implementation for inline xsd:byte, xsd:short, xsd:int, xsd:long, xsd:float, xsd:decimal.

See Also:

Serialized Form

Field Summary

Fields inherited from class com.bigdata.rdf.internal.impl.literal.NumericIV

numericalDatatypes

Fields inherited from class com.bigdata.rdf.internal.impl.AbstractIV

flags

Constructor Summary

Constructors

Constructor and Description
XSDNumericIV(byte number)
XSDNumericIV(double number)
XSDNumericIV(float number)
XSDNumericIV(int number)
XSDNumericIV(long number)
XSDNumericIV(short number)

Method Summary

Methods

Modifier and Type	Method and Description
int	_compareTo(IV o) Compare two IVs having the same intrinsic datatype.
V	asValue(LexiconRelation lex) If the value is not already cached, then inflate an inline RDF value to a BigdataValue and cache it on a private field.
boolean	booleanValue() Implement Literal.booleanValue().
int	byteLength() The byte length of the encoded IV.
byte	byteValue() Implement Literal.byteValue().
IV<V,Number>	clone(boolean clearCache) Return a copy of this IV.
BigDecimal	decimalValue() Implement Literal.decimalValue().
double	doubleValue() Implement Literal.doubleValue().
boolean	equals(Object o) Return true iff the two IVs are the same point in the same value space.
float	floatValue() Implement Literal.floatValue().
Number	getInlineValue() Return the Java Object corresponding to the inline value.
int	hashCode() Return a hash code based on the value of the point in the value space.
BigInteger	integerValue() Implement Literal.integerValue().
int	intValue() Implement Literal.intValue().
long	longValue() Implement Literal.longValue().
short	shortValue() Implement Literal.shortValue().

Methods inherited from class com.bigdata.rdf.internal.impl.literal.AbstractLiteralIV

calendarValue, getDatatype, getLabel, getLanguage, needsMaterialization, stringValue, toString

Methods inherited from class com.bigdata.rdf.internal.impl.AbstractInlineIV

isInline

Methods inherited from class com.bigdata.rdf.internal.impl.AbstractIV

compareTo, encode, flags, getDTE, getDTE, getDTEX, getInternalValueTypeEnum, getValue, getValueCache, getVTE, getVTE, hasValue, isBigNumeric, isBNode, isExtension, isExtension, isFixedNumeric, isFloatingPointNumeric, isInline, isLiteral, isNullIV, isNumeric, isResource, isSignedNumeric, isStatement, isUnsignedNumeric, isURI, isVocabulary, setValue, toFlags

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.openrdf.model.Literal

calendarValue, getDatatype, getLabel, getLanguage

Methods inherited from interface org.openrdf.model.Value

stringValue

Methods inherited from interface com.bigdata.rdf.internal.IV

encode, flags, getDTE, getDTEX, getVTE, isBigNumeric, isBNode, isExtension, isFixedNumeric, isFloatingPointNumeric, isInline, isLiteral, isNullIV, isNumeric, isResource, isSignedNumeric, isStatement, isUnsignedNumeric, isURI, isVocabulary

Methods inherited from interface java.lang.Comparable

compareTo

Methods inherited from interface com.bigdata.rdf.internal.IVCache

getValue, hasValue, setValue

Constructor Detail

XSDNumericIV

public XSDNumericIV(byte number)

XSDNumericIV

public XSDNumericIV(short number)

XSDNumericIV

public XSDNumericIV(int number)

XSDNumericIV

public XSDNumericIV(long number)

XSDNumericIV

public XSDNumericIV(float number)

XSDNumericIV

public XSDNumericIV(double number)

Method Detail

clone

public IV<V,Number> clone(boolean clearCache)

Description copied from interface: IVCache

Return a copy of this IV.

Note: This method exists to defeat the hard reference from the IV to the cached BigdataValue in order to avoid a memory leak when the IV is used as the key in a weak value cache whose value is the BigdataValue. Therefore, certain IV implementations MAY return this when they are used for limited collections. The vocabulary IVs are the primary example. For the same reason, we do not need to recursively break the link from the IV to the BigdataValue for IVs which embed other IVs.

Specified by:

clone in interface IVCache<V extends BigdataLiteral,Number>

Parameters:

clearCache - When true the cached reference (if any) will NOT be set on the copy.

Returns:

The copy.

See Also:

(Thread-local cache combined with unbounded thread pools causes effective memory leak)

getInlineValue

public final Number getInlineValue()

Description copied from interface: IV

Return the Java Object corresponding to the inline value.

Specified by:

getInlineValue in interface IV<V extends BigdataLiteral,Number>

Returns:

The Object.

booleanValue

public boolean booleanValue()

Description copied from class: AbstractLiteralIV

Implement Literal.booleanValue().

Specified by:

booleanValue in interface org.openrdf.model.Literal

Overrides:

booleanValue in class AbstractLiteralIV<V extends BigdataLiteral,Number>

byteValue

public byte byteValue()

Description copied from class: AbstractLiteralIV

Implement Literal.byteValue().

Specified by:

byteValue in interface org.openrdf.model.Literal

Overrides:

byteValue in class AbstractLiteralIV<V extends BigdataLiteral,Number>

shortValue

public short shortValue()

Description copied from class: AbstractLiteralIV

Implement Literal.shortValue().

Specified by:

shortValue in interface org.openrdf.model.Literal

Overrides:

shortValue in class AbstractLiteralIV<V extends BigdataLiteral,Number>

intValue

public int intValue()

Description copied from class: AbstractLiteralIV

Implement Literal.intValue().

Specified by:

intValue in interface org.openrdf.model.Literal

Overrides:

intValue in class AbstractLiteralIV<V extends BigdataLiteral,Number>

longValue

public long longValue()

Description copied from class: AbstractLiteralIV

Implement Literal.longValue().

Specified by:

longValue in interface org.openrdf.model.Literal

Overrides:

longValue in class AbstractLiteralIV<V extends BigdataLiteral,Number>

floatValue

public float floatValue()

Description copied from class: AbstractLiteralIV

Implement Literal.floatValue().

Specified by:

floatValue in interface org.openrdf.model.Literal

Overrides:

floatValue in class AbstractLiteralIV<V extends BigdataLiteral,Number>

doubleValue

public double doubleValue()

Description copied from class: AbstractLiteralIV

Implement Literal.doubleValue().

Specified by:

doubleValue in interface org.openrdf.model.Literal

Overrides:

doubleValue in class AbstractLiteralIV<V extends BigdataLiteral,Number>

integerValue

public BigInteger integerValue()

Description copied from class: AbstractLiteralIV

Implement Literal.integerValue().

Specified by:

integerValue in interface org.openrdf.model.Literal

Overrides:

integerValue in class AbstractLiteralIV<V extends BigdataLiteral,Number>

decimalValue

public BigDecimal decimalValue()

Description copied from class: AbstractLiteralIV

Implement Literal.decimalValue().

Specified by:

decimalValue in interface org.openrdf.model.Literal

Overrides:

decimalValue in class AbstractLiteralIV<V extends BigdataLiteral,Number>

asValue

public V asValue(LexiconRelation lex)

Description copied from interface: IVCache

If the value is not already cached, then inflate an inline RDF value to a BigdataValue and cache it on a private field.

Note: Query plans are responsible for ensuring that IVs have been materialized before operators are evaluated which invoke this method. This pattern ensures that efficient batch operators are used to materialize Values, and thereby avoids heavy RMI overhead in scale-out, and provides operators which use IVCache.getValue() with a simple method signature which does not require access to the lexicon. Query plans are also responsible for dropping variables once they are no longer needed or, in the case of large values and BLOBs, dropping the cached BigdataValue when possible in order to avoid excess network and heap overhead.

Specified by:

asValue in interface IVCache<V extends BigdataLiteral,Number>

Parameters:

lex - The lexicon relation (this is required in order to access the BigdataValueFactory for the namespace associated with lexicon when we materialize an inline IV).

Returns:

The corresponding BigdataValue.

equals

public boolean equals(Object o)

Description copied from class: AbstractIV

Return true iff the two IVs are the same point in the same value space. Points in different value spaces (as identified by different datatype URIs) are NOT equal even if they have the same value in the corresponding primitive data type.

Note: The IV implementations typically DO NOT compare equals() with BigdataValues. Therefore you MUST NOT mix IVs and BigdataValues in the keys of a map or the values of a set.

Specified by:

equals in interface org.openrdf.model.Literal

Specified by:

equals in class AbstractIV<V extends BigdataLiteral,Number>

_compareTo

public int _compareTo(IV o)

Description copied from class: AbstractIV

Compare two IVs having the same intrinsic datatype.

Specified by:

_compareTo in class AbstractIV<V extends BigdataLiteral,Number>

hashCode

public int hashCode()

Description copied from class: AbstractIV

Return a hash code based on the value of the point in the value space.

Note: The IV implementations typically DO NOT return hash codes that are consistent with BigdataValue#hashCode(). Therefore you MUST NOT mix IVs and BigdataValues in the keys of a map or the values of a set.

Specified by:

hashCode in interface org.openrdf.model.Literal

Specified by:

hashCode in class AbstractIV<V extends BigdataLiteral,Number>

byteLength

public int byteLength()

Description copied from interface: IV

The byte length of the encoded IV.

Specified by:

byteLength in interface IV<V extends BigdataLiteral,Number>