AbstractValueFactory (RDF4J 2.5.4 API)

java.lang.Object
- org.eclipse.rdf4j.model.impl.AbstractValueFactory

All Implemented Interfaces:

ValueFactory

Direct Known Subclasses:

MemValueFactory, SimpleValueFactory, ValueFactoryBase, ValueStore
```
public abstract class AbstractValueFactory
extends Object
implements ValueFactory
```
Abstract base class for ValueFactory implementations. It implements all basic Value creation methods by using the default implementations (SimpleBNode, SimpleIRI, etc), and type-optimized subclasses (e.g. BooleanLiteral, NumericLiteral) where possible.

Author:

Arjohn Kampman, Jeen Broekstra

Constructor Summary

Constructors
Modifier Constructor and Description

protected AbstractValueFactory()

Constructors
Modifier	Constructor and Description
`protected`	`AbstractValueFactory()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`BNode`	`createBNode()` Creates a new bNode.
`BNode`	`createBNode(String nodeID)` Creates a new blank node with the given node identifier.
`protected Literal`	`createFPLiteral(Number value, IRI datatype)` Calls `createNumericLiteral(Number, IRI)` with the supplied value and datatype as parameters.
`protected Literal`	`createIntegerLiteral(Number value, IRI datatype)` Calls `createNumericLiteral(Number, IRI)` with the supplied value and datatype as parameters.
`IRI`	`createIRI(String iri)` Creates a new IRI from the supplied string-representation.
`IRI`	`createIRI(String namespace, String localName)` Creates a new IRI from the supplied namespace and local name.
`Literal`	`createLiteral(BigDecimal bigDecimal)` Creates a new literal representing the specified bigDecimal that is typed using the appropriate XML Schema date/time datatype.
`Literal`	`createLiteral(BigInteger bigInteger)` Creates a new literal representing the specified bigInteger that is typed using the appropriate XML Schema date/time datatype.
`Literal`	`createLiteral(boolean b)` Creates a new `xsd:boolean`-typed literal representing the specified value.
`Literal`	`createLiteral(byte value)` Calls `createIntegerLiteral(Number, IRI)` with the supplied value and `XMLSchema.BYTE` as parameters.
`Literal`	`createLiteral(Date date)` Converts the supplied `Date` to a `XMLGregorianCalendar`, then calls `ValueFactory.createLiteral(XMLGregorianCalendar)`.
`Literal`	`createLiteral(double value)` Calls `createFPLiteral(Number, IRI)` with the supplied value and `XMLSchema.DOUBLE` as parameters.
`Literal`	`createLiteral(float value)` Calls `createFPLiteral(Number, IRI)` with the supplied value and `XMLSchema.FLOAT` as parameters.
`Literal`	`createLiteral(int value)` Calls `createIntegerLiteral(Number, IRI)` with the supplied value and `XMLSchema.INT` as parameters.
`Literal`	`createLiteral(long value)` Calls `createIntegerLiteral(Number, IRI)` with the supplied value and `XMLSchema.LONG` as parameters.
`Literal`	`createLiteral(short value)` Calls `createIntegerLiteral(Number, IRI)` with the supplied value and `XMLSchema.SHORT` as parameters.
`Literal`	`createLiteral(String value)` Creates a new literal with the supplied label.
`Literal`	`createLiteral(String value, IRI datatype)` Creates a new literal with the supplied label and datatype.
`Literal`	`createLiteral(String value, String language)` Creates a new literal with the supplied label and language attribute.
`Literal`	`createLiteral(XMLGregorianCalendar calendar)` Calls `ValueFactory.createLiteral(String, IRI)` with the String-value of the supplied calendar and the appropriate datatype as parameters.
`protected Literal`	`createNumericLiteral(Number number, IRI datatype)` Creates specific optimized subtypes of SimpleLiteral for numeric datatypes.
`Statement`	`createStatement(Resource subject, IRI predicate, Value object)` Creates a new statement with the supplied subject, predicate and object.
`Statement`	`createStatement(Resource subject, IRI predicate, Value object, Resource context)` Creates a new statement with the supplied subject, predicate and object and associated context.
`protected void`	`initBNodeParams()` Generates a new bnode prefix and resets `nextBNodeID` to `1` .

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.eclipse.rdf4j.model.ValueFactory
createLiteral, createStatement, createStatement, createURI, createURI

- Constructor Detail
  - AbstractValueFactory
```
protected AbstractValueFactory()
```
- Method Detail
  - createIRI
```
public IRI createIRI(String iri)
```
    Description copied from interface: ValueFactory
    
    Creates a new IRI from the supplied string-representation.
    
    Specified by:
    
    createIRI in interface ValueFactory
    
    Parameters:
    
    iri - A string-representation of a IRI.
    
    Returns:
    
    An object representing the IRI.
  - createIRI
```
public IRI createIRI(String namespace,
                     String localName)
```
    Description copied from interface: ValueFactory
    
    Creates a new IRI from the supplied namespace and local name. Calling this method is funtionally equivalent to calling createIRI(namespace+localName), but allows the ValueFactory to reuse supplied namespace and local name strings whenever possible. Note that the values returned by IRI.getNamespace() and IRI.getLocalName() are not necessarily the same as the values that are supplied to this method.
    
    Specified by:
    
    createIRI in interface ValueFactory
    
    Parameters:
    
    namespace - The IRI's namespace.
    
    localName - The IRI's local name.
  - createBNode
```
public BNode createBNode(String nodeID)
```
    Description copied from interface: ValueFactory
    
    Creates a new blank node with the given node identifier.
    
    Specified by:
    
    createBNode in interface ValueFactory
    
    Parameters:
    
    nodeID - The blank node identifier.
    
    Returns:
    
    An object representing the blank node.
  - createLiteral
```
public Literal createLiteral(String value)
```
    Description copied from interface: ValueFactory
    
    Creates a new literal with the supplied label. The return value of Literal.getDatatype() for the returned object must be XMLSchema.STRING.
    
    Specified by:
    
    createLiteral in interface ValueFactory
    
    Parameters:
    
    value - The literal's label, must not be null.
  - createLiteral
```
public Literal createLiteral(String value,
                             String language)
```
    Description copied from interface: ValueFactory
    
    Creates a new literal with the supplied label and language attribute. The return value of Literal.getDatatype() for the returned object must be RDF.LANGSTRING.
    
    Specified by:
    
    createLiteral in interface ValueFactory
    
    Parameters:
    
    value - The literal's label, must not be null.
    
    language - The literal's language attribute, must not be null.
  - createLiteral
```
public Literal createLiteral(boolean b)
```
    Description copied from interface: ValueFactory
    
    Creates a new xsd:boolean-typed literal representing the specified value.
    
    Specified by:
    
    createLiteral in interface ValueFactory
    
    Parameters:
    
    b - The value for the literal.
    
    Returns:
    
    An xsd:boolean-typed literal for the specified value.
  - createLiteral
```
public Literal createLiteral(String value,
                             IRI datatype)
```
    Description copied from interface: ValueFactory
    
    Creates a new literal with the supplied label and datatype.
    
    Specified by:
    
    createLiteral in interface ValueFactory
    
    Parameters:
    
    value - The literal's label, must not be null.
    
    datatype - The literal's datatype. If it is null, the datatype XMLSchema.STRING will be assigned to this literal.
  - createStatement
```
public Statement createStatement(Resource subject,
                                 IRI predicate,
                                 Value object)
```
    Description copied from interface: ValueFactory
    
    Creates a new statement with the supplied subject, predicate and object.
    
    Specified by:
    
    createStatement in interface ValueFactory
    
    Parameters:
    
    subject - The statement's subject.
    
    predicate - The statement's predicate.
    
    object - The statement's object.
    
    Returns:
    
    The created statement.
  - createStatement
```
public Statement createStatement(Resource subject,
                                 IRI predicate,
                                 Value object,
                                 Resource context)
```
    Description copied from interface: ValueFactory
    
    Creates a new statement with the supplied subject, predicate and object and associated context.
    
    Specified by:
    
    createStatement in interface ValueFactory
    
    Parameters:
    
    subject - The statement's subject.
    
    predicate - The statement's predicate.
    
    object - The statement's object.
    
    context - The statement's context.
    
    Returns:
    
    The created statement.
  - initBNodeParams
```
protected void initBNodeParams()
```
    Generates a new bnode prefix and resets nextBNodeID to 1 .
  - createBNode
```
public BNode createBNode()
```
    Description copied from interface: ValueFactory
    
    Creates a new bNode.
    
    Specified by:
    
    createBNode in interface ValueFactory
    
    Returns:
    
    An object representing the bNode.
  - createLiteral
```
public Literal createLiteral(byte value)
```
    Calls createIntegerLiteral(Number, IRI) with the supplied value and XMLSchema.BYTE as parameters.
    
    Specified by:
    
    createLiteral in interface ValueFactory
    
    Parameters:
    
    value - The value for the literal.
    
    Returns:
    
    An xsd:byte-typed literal for the specified value.
  - createLiteral
```
public Literal createLiteral(short value)
```
    Calls createIntegerLiteral(Number, IRI) with the supplied value and XMLSchema.SHORT as parameters.
    
    Specified by:
    
    createLiteral in interface ValueFactory
    
    Parameters:
    
    value - The value for the literal.
    
    Returns:
    
    An xsd:short-typed literal for the specified value.
  - createLiteral
```
public Literal createLiteral(int value)
```
    Calls createIntegerLiteral(Number, IRI) with the supplied value and XMLSchema.INT as parameters.
    
    Specified by:
    
    createLiteral in interface ValueFactory
    
    Parameters:
    
    value - The value for the literal.
    
    Returns:
    
    An xsd:int-typed literal for the specified value.
  - createLiteral
```
public Literal createLiteral(long value)
```
    Calls createIntegerLiteral(Number, IRI) with the supplied value and XMLSchema.LONG as parameters.
    
    Specified by:
    
    createLiteral in interface ValueFactory
    
    Parameters:
    
    value - The value for the literal.
    
    Returns:
    
    An xsd:long-typed literal for the specified value.
  - createIntegerLiteral
```
protected Literal createIntegerLiteral(Number value,
                                       IRI datatype)
```
    Calls createNumericLiteral(Number, IRI) with the supplied value and datatype as parameters.
  - createLiteral
```
public Literal createLiteral(float value)
```
    Calls createFPLiteral(Number, IRI) with the supplied value and XMLSchema.FLOAT as parameters.
    
    Specified by:
    
    createLiteral in interface ValueFactory
    
    Parameters:
    
    value - The value for the literal.
    
    Returns:
    
    An xsd:float-typed literal for the specified value.
  - createLiteral
```
public Literal createLiteral(double value)
```
    Calls createFPLiteral(Number, IRI) with the supplied value and XMLSchema.DOUBLE as parameters.
    
    Specified by:
    
    createLiteral in interface ValueFactory
    
    Parameters:
    
    value - The value for the literal.
    
    Returns:
    
    An xsd:double-typed literal for the specified value.
  - createLiteral
```
public Literal createLiteral(BigInteger bigInteger)
```
    Description copied from interface: ValueFactory
    
    Creates a new literal representing the specified bigInteger that is typed using the appropriate XML Schema date/time datatype.
    
    Specified by:
    
    createLiteral in interface ValueFactory
  - createLiteral
```
public Literal createLiteral(BigDecimal bigDecimal)
```
    Description copied from interface: ValueFactory
    
    Creates a new literal representing the specified bigDecimal that is typed using the appropriate XML Schema date/time datatype.
    
    Specified by:
    
    createLiteral in interface ValueFactory
  - createFPLiteral
```
protected Literal createFPLiteral(Number value,
                                  IRI datatype)
```
    Calls createNumericLiteral(Number, IRI) with the supplied value and datatype as parameters.
  - createNumericLiteral
```
protected Literal createNumericLiteral(Number number,
                                       IRI datatype)
```
    Creates specific optimized subtypes of SimpleLiteral for numeric datatypes.
  - createLiteral
```
public Literal createLiteral(XMLGregorianCalendar calendar)
```
    Calls ValueFactory.createLiteral(String, IRI) with the String-value of the supplied calendar and the appropriate datatype as parameters.
    
    Specified by:
    
    createLiteral in interface ValueFactory
    
    Parameters:
    
    calendar - The value for the literal.
    
    Returns:
    
    An typed literal for the specified calendar.
    
    See Also:
    
    XMLGregorianCalendar.toXMLFormat(), XMLGregorianCalendar.getXMLSchemaType(), XMLDatatypeUtil.qnameToURI(javax.xml.namespace.QName)
  - createLiteral
```
public Literal createLiteral(Date date)
```
    Converts the supplied Date to a XMLGregorianCalendar, then calls ValueFactory.createLiteral(XMLGregorianCalendar).
    
    Specified by:
    
    createLiteral in interface ValueFactory

Class AbstractValueFactory

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface org.eclipse.rdf4j.model.ValueFactory

Constructor Detail

AbstractValueFactory

Method Detail

createIRI

createIRI

createBNode

createLiteral

createLiteral

createLiteral

createLiteral

createStatement

createStatement

initBNodeParams

createBNode

createLiteral

createLiteral

createLiteral

createLiteral

createIntegerLiteral

createLiteral

createLiteral

createLiteral

createLiteral

createFPLiteral

createNumericLiteral

createLiteral

createLiteral