Module org.apache.jena.core

Package org.apache.jena.datatypes.xsd.impl

Class XSDBaseNumericType

java.lang.Object

org.apache.jena.datatypes.BaseDatatype

org.apache.jena.datatypes.xsd.XSDDatatype

org.apache.jena.datatypes.xsd.impl.XSDBaseNumericType

All Implemented Interfaces:

RDFDatatype

Direct Known Subclasses:

XSDByteType

public class XSDBaseNumericType
extends XSDDatatype

Base implementation for all numeric datatypes derived from xsd:decimal. The only purpose of this place holder is to support the isValidLiteral tests across numeric types. *

Note that float and double are not included in this set.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.jena.datatypes.xsd.XSDDatatype

XSDDatatype.XSDGenericType

Nested classes/interfaces inherited from class org.apache.jena.datatypes.BaseDatatype

BaseDatatype.TypedValue

Field Summary

Fields inherited from class org.apache.jena.datatypes.xsd.XSDDatatype

XSD, XSDanyURI, XSDbase64Binary, XSDboolean, XSDbyte, XSDdate, XSDdateTime, XSDdateTimeStamp, XSDdayTimeDuration, XSDdecimal, XSDdouble, XSDduration, XSDENTITY, XSDfloat, XSDgDay, XSDgMonth, XSDgMonthDay, XSDgYear, XSDgYearMonth, XSDhexBinary, XSDID, XSDIDREF, XSDint, XSDinteger, XSDlanguage, XSDlong, XSDName, XSDNCName, XSDnegativeInteger, XSDNMTOKEN, XSDnonNegativeInteger, XSDnonPositiveInteger, XSDnormalizedString, XSDNOTATION, XSDpositiveInteger, XSDQName, XSDshort, XSDstring, XSDtime, XSDtoken, XSDunsignedByte, XSDunsignedInt, XSDunsignedLong, XSDunsignedShort, XSDyearMonthDuration

Constructor Summary

Constructors

Constructor	Description
XSDBaseNumericType(String typeName)	Constructor.
XSDBaseNumericType(String typeName, Class<?> javaClass)	Constructor.

Method Summary

Modifier and Type	Method	Description
Object	cannonicalise(Object value)	Cannonicalise a java Object value to a normal form.
boolean	isEqual(LiteralLabel value1, LiteralLabel value2)	Compares two instances of values of the given datatype.
boolean	isValidLiteral(LiteralLabel lit)	Test whether the given LiteralLabel is a valid instance of this datatype.
boolean	isValidValue(Object valueForm)	Test whether the given object is a legal value form of this datatype.
Object	parse(String lexicalForm)	Parse a lexical form of this datatype to a value
String	unparse(Object value)	Convert a value of this datatype to lexical form.

Methods inherited from class org.apache.jena.datatypes.xsd.XSDDatatype

extendedTypeDefinition, getJavaClass, isBaseTypeCompatible, loadXSDSimpleTypes, main, parseValidated, trimPlus

Methods inherited from class org.apache.jena.datatypes.BaseDatatype

equals, getHashCode, getURI, hashCode, isValid, langTagCompatible, normalizeSubType, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Details

XSDBaseNumericType

public XSDBaseNumericType(String typeName)

Constructor.

Parameters:

typeName - the name of the XSD type to be instantiated, this is used to lookup a type definition from the Xerces schema factory.

XSDBaseNumericType

public XSDBaseNumericType(String typeName,
 Class<?> javaClass)

Constructor.

Parameters:

typeName - the name of the XSD type to be instantiated, this is used to lookup a type definition from the Xerces schema factory.

javaClass - the java class for which this xsd type is to be treated as the cannonical representation

Method Details

isValidLiteral

public boolean isValidLiteral(LiteralLabel lit)

Test whether the given LiteralLabel is a valid instance of this datatype. This takes into account typing information as well as lexical form - for example an xsd:string is never considered valid as an xsd:integer (even if it is lexically legal like "1").

Specified by:

isValidLiteral in interface RDFDatatype

Overrides:

isValidLiteral in class XSDDatatype

isValidValue

public boolean isValidValue(Object valueForm)

Test whether the given object is a legal value form of this datatype. Brute force implementation.

Specified by:

isValidValue in interface RDFDatatype

Overrides:

isValidValue in class BaseDatatype

cannonicalise

public Object cannonicalise(Object value)

Cannonicalise a java Object value to a normal form. Primarily used in cases such as xsd:integer to reduce the Java object representation to the narrowest of the Number subclasses to ensure that indexing of typed literals works.

Specified by:

cannonicalise in interface RDFDatatype

Overrides:

cannonicalise in class BaseDatatype

parse

public Object parse(String lexicalForm)
             throws DatatypeFormatException

Parse a lexical form of this datatype to a value

Specified by:

parse in interface RDFDatatype

Overrides:

parse in class XSDDatatype

Throws:

DatatypeFormatException - if the lexical form is not legal

unparse

public String unparse(Object value)

Convert a value of this datatype to lexical form. Certain forms are not a simple matter of java's toString on the Number object.

Specified by:

unparse in interface RDFDatatype

Overrides:

unparse in class XSDDatatype

isEqual

public boolean isEqual(LiteralLabel value1,
 LiteralLabel value2)

Compares two instances of values of the given datatype.

Specified by:

isEqual in interface RDFDatatype

Overrides:

isEqual in class XSDDatatype