org.da.sparqlhelper.sparql.model

Class Variable

java.lang.Object

org.da.sparqlhelper.sparql.model.VariableOrIRI

org.da.sparqlhelper.sparql.model.Variable

All Implemented Interfaces:

java.lang.Comparable<java.lang.Object>, TripleElement

public class Variable
extends VariableOrIRI

A variable.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Variable.FromProperties

Field Summary

Fields inherited from class org.da.sparqlhelper.sparql.model.VariableOrIRI

name

Constructor Summary

Constructors

Constructor and Description
Variable(java.lang.String name)

Method Summary

Modifier and Type	Method and Description
void	addAsProperty(PrefixedName typeName, Variable varRef, PrefixedName propertyName) Add a property for which this variable can be a representation.
Variable	asVariable()
boolean	equals(java.lang.Object obj)
java.util.Map<java.lang.String,Variable.FromProperties>	fromProperties() Return the properties for which this variable is a representation.
Variable.FromProperties	fromProperties(java.lang.String typeName) Return the properties for which this variable is a representation for a specified type.For example in the following sparql declaration the "?
PrefixedName	getFirstProperty() Return the first associated property for this variable.
int	hashCode()
boolean	isFromProperties() Return true if this variable is a representation of a property.
boolean	isFromProperties(java.lang.String typeName) Return true if this variable is a representation of a property on a specified type.
boolean	isVariable()
java.lang.String	toString()

Methods inherited from class org.da.sparqlhelper.sparql.model.VariableOrIRI

addAsType, compareTo, fromTypes, getFirstType, getName, hasType, isFromTypes

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.da.sparqlhelper.sparql.model.TripleElement

asIRI, asProperty, asValue, createIRI, createPropertyDecl, createValue, isIRI, isProperty, isPropertyDecl, isValue

Constructor Detail

Variable

public Variable(java.lang.String name)

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

addAsProperty

public void addAsProperty(PrefixedName typeName,
                          Variable varRef,
                          PrefixedName propertyName)

Add a property for which this variable can be a representation. For example in the following sparql declaration the "?myVar" variable is a representation of the "orig:hasActorRole" property for the "orig:Actor" type:

 SELECT ?group0 ?actorRole1
 WHERE {
 ?group0 a orig:Actor .
 ?group0 orig:hasActorRole ?actorRole1 .
 }
 

Parameters:

typeName - the prefixed name for the type

varRef - the variable reference on which the property is applied

propertyName - the prefixed name for the property

isFromProperties

public boolean isFromProperties()

Return true if this variable is a representation of a property.

Returns:

true if this variable is a representation of a property

fromProperties

public java.util.Map<java.lang.String,Variable.FromProperties> fromProperties()

Return the properties for which this variable is a representation. For example in the following sparql declaration the "?myVar" variable is a representation of the "orig:hasActorRole" property for the "orig:Actor" type:

 SELECT ?group0 ?actorRole1
 WHERE {
 ?group0 a orig:Actor .
 ?group0 orig:hasActorRole ?actorRole1 .
 }
 

Returns:

the properties

isFromProperties

public boolean isFromProperties(java.lang.String typeName)

Return true if this variable is a representation of a property on a specified type.

Parameters:

typeName - the prefixed name for the type

Returns:

true if this variable is a representation of a property on the type

getFirstProperty

public PrefixedName getFirstProperty()

Return the first associated property for this variable. It will return null if isFromProperties() return false.

Returns:

the first associated property for this variable

fromProperties

public Variable.FromProperties fromProperties(java.lang.String typeName)

Return the properties for which this variable is a representation for a specified type.For example in the following sparql declaration the "?myVar" variable is a representation of the "orig:hasActorRole" property for the "orig:Actor" type:

 SELECT ?group0 ?actorRole1
 WHERE {
 ?group0 a orig:Actor .
 ?group0 orig:hasActorRole ?actorRole1 .
 }
 

Parameters:

typeName - the type name

Returns:

the properties

hashCode

public int hashCode()

Overrides:

hashCode in class VariableOrIRI

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class VariableOrIRI

isVariable

public boolean isVariable()

asVariable

public Variable asVariable()