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Java Source Code / Java Documentation » RSS RDF » Jena 2.5.5 » com.hp.hpl.jena.datatypes   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    com.hp.hpl.jena.datatypes.BaseDatatype All known Subclasses:   com.hp.hpl.jena.datatypes.xsd.XSDDatatype,  com.hp.hpl.jena.datatypes.xsd.impl.XMLLiteralType, BaseDatatype public class BaseDatatype implements RDFDatatype(Code) Base level implementation of datatype from which real implementations can inherit. author:    Dave Reynolds version:    $Revision: 1.16 $ on $Date: 2008/01/02 12:10:24 $ Inner Class :public static class TypedValue Field Summary protected  String uri      Constructor Summary public   BaseDatatype(String uri)      Constructor. Method Summary 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. public  Object extendedTypeDefinition()      Returns an object giving more details on the datatype. This is type system dependent. public  int getHashCode(LiteralLabel lit)      Default implementation of getHashCode() delegates to the default from the literal label. public  Class getJavaClass()      Returns the java class which is used to represent value instances of this datatype. public  String getURI()      public  boolean isEqual(LiteralLabel value1, LiteralLabel value2)      Compares two instances of values of the given datatype. public  boolean isValid(String lexicalForm)      Test whether the given string is a legal lexical form of this datatype. public  boolean isValidLiteral(LiteralLabel lit)      Test whether the given LiteralLabel is a valid instance of this datatype. public  boolean isValidValue(Object valueForm)      Test whether the given object is a legal value form of this datatype. public  boolean langTagCompatible(LiteralLabel value1, LiteralLabel value2)      public  RDFDatatype normalizeSubType(Object value, RDFDatatype dt)      Normalization. public  Object parse(String lexicalForm)      public  String toString()      public  String unparse(Object value)      Convert a value of this datatype out to lexical form. Field Detail uri protected String uri(Code) The URI label for this data type Constructor Detail BaseDatatype public BaseDatatype(String uri)(Code) Constructor. Parameters:   uri - the URI label to use for this datatype Method Detail cannonicalise public Object cannonicalise(Object value)(Code) 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. extendedTypeDefinition public Object extendedTypeDefinition()(Code) Returns an object giving more details on the datatype. This is type system dependent. In the case of XSD types this will be an instance of org.apache.xerces.impl.xs.psvi.XSTypeDefinition. getHashCode public int getHashCode(LiteralLabel lit)(Code) Default implementation of getHashCode() delegates to the default from the literal label. getJavaClass public Class getJavaClass()(Code) Returns the java class which is used to represent value instances of this datatype. getURI public String getURI()(Code) Return the URI which is the label for this datatype isEqual public boolean isEqual(LiteralLabel value1, LiteralLabel value2)(Code) Compares two instances of values of the given datatype. This default requires value and datatype equality. isValid public boolean isValid(String lexicalForm)(Code) Test whether the given string is a legal lexical form of this datatype. isValidLiteral public boolean isValidLiteral(LiteralLabel lit)(Code) Test whether the given LiteralLabel is a valid instance of this datatype. This takes into accound 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"). isValidValue public boolean isValidValue(Object valueForm)(Code) Test whether the given object is a legal value form of this datatype. langTagCompatible public boolean langTagCompatible(LiteralLabel value1, LiteralLabel value2)(Code) Helper function to compare language tag values normalizeSubType public RDFDatatype normalizeSubType(Object value, RDFDatatype dt)(Code) Normalization. If the value is narrower than the current data type (e.g. value is xsd:date but the time is xsd:datetime) returns the narrower type for the literal. If the type is narrower than the value then it may normalize the value (e.g. set the mask of an XSDDateTime) Currently only used to narrow gener XSDDateTime objects to the minimal XSD date/time type. Parameters:   value - the current object value Parameters:   dt - the currently set data type a narrower version of the datatype based on the actual value range parse public Object parse(String lexicalForm) throws DatatypeFormatException(Code) Parse a lexical form of this datatype to a value throws:   DatatypeFormatException - if the lexical form is not legal toString public String toString()(Code) Display format unparse public String unparse(Object value)(Code) Convert a value of this datatype out to lexical form. Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)