prajna.data.rdf

Class RdfLiteral

java.lang.Object

prajna.data.rdf.RdfThing

prajna.data.rdf.RdfLiteral

All Implemented Interfaces:

java.io.Serializable

public class RdfLiteral
extends RdfThing

Represents an RDF literal value.

Author:

Edward Swing

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RdfLiteral(double value) Create a new literal value from a floating point value
RdfLiteral(int value) Create a new literal value from an integer value
RdfLiteral(java.lang.String value) Create a new literal value
RdfLiteral(java.lang.String value, FieldDesc<?> descriptor) Create a new literal value using a particular field descriptor

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj) Return whether this literal has the same value as another literal.
FieldDesc<?>	getDescriptor() Set the field descriptor for this literal.
java.lang.String	getLanguage()
int	hashCode() Return the hash code for this literal
void	setDescriptor(FieldDesc<?> descriptor) Get the field descriptor for this literal
void	setLanguage(java.lang.String lang) Set the language for this Literal.

Methods inherited from class prajna.data.rdf.RdfThing

getName, getUri, isVariableFlag, matches, setName, setUri, setVariableFlag, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

RdfLiteral

public RdfLiteral(double value)

Create a new literal value from a floating point value

Parameters:

value - the value

RdfLiteral

public RdfLiteral(int value)

Create a new literal value from an integer value

Parameters:

value - the value

RdfLiteral

public RdfLiteral(java.lang.String value)

Create a new literal value

Parameters:

value - the value

RdfLiteral

public RdfLiteral(java.lang.String value,
          FieldDesc<?> descriptor)

Create a new literal value using a particular field descriptor

Parameters:

value - the value

descriptor - the field descriptor

Method Detail

equals

public boolean equals(java.lang.Object obj)

Return whether this literal has the same value as another literal. Returns true if the two literals have the same string representation

Overrides:

equals in class java.lang.Object

Returns:

true if the two literals have the same value, false otherwise.

getDescriptor

public FieldDesc<?> getDescriptor()

Set the field descriptor for this literal. The field descriptor can be used to parse the literal into the appropriate data type

Returns:

the field descriptor

getLanguage

public java.lang.String getLanguage()

Returns:

the language

hashCode

public int hashCode()

Return the hash code for this literal

Overrides:

hashCode in class java.lang.Object

Returns:

the hash code

setDescriptor

public void setDescriptor(FieldDesc<?> descriptor)

Get the field descriptor for this literal

Parameters:

descriptor - the field descriptor

setLanguage

public void setLanguage(java.lang.String lang)

Set the language for this Literal. The default is en (English).

Parameters:

lang - the language to set