Module org.apache.jena.arq

Package org.apache.jena.sparql.core

Class QuerySolutionBase

java.lang.Object

org.apache.jena.sparql.core.QuerySolutionBase

All Implemented Interfaces:

QuerySolution

Direct Known Subclasses:

QuerySolutionMap, ResultBinding

public abstract class QuerySolutionBase
extends Object
implements QuerySolution

Implementation of QuerySolution that contains the canonicalization and casting code.

Constructor Summary

Constructors

Constructor	Description
QuerySolutionBase()

Method Summary

Modifier and Type	Method	Description
boolean	contains(String varName)	Return true if the named variable is in this binding
RDFNode	get(String varName)	Return the value of the named variable in this binding.
Literal	getLiteral(String varName)	Return the value of the named variable in this binding, casting to a Literal.
Resource	getResource(String varName)	Return the value of the named variable in this binding, casting to a Resource.
abstract Iterator<String>	varNames()	Iterate over the variable names (strings) in this QuerySolution.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

QuerySolutionBase

public QuerySolutionBase()

Method Details

get

public RDFNode get(String varName)

Description copied from interface: QuerySolution

Return the value of the named variable in this binding. A return of null indicates that the variable is not present in this solution.

Specified by:

get in interface QuerySolution

Returns:

RDFNode

getResource

public Resource getResource(String varName)

Description copied from interface: QuerySolution

Return the value of the named variable in this binding, casting to a Resource. A return of null indicates that the variable is not present in this solution. An exception indicates it was present but not a resource.

Specified by:

getResource in interface QuerySolution

Returns:

Resource

getLiteral

public Literal getLiteral(String varName)

Description copied from interface: QuerySolution

Return the value of the named variable in this binding, casting to a Literal. A return of null indicates that the variable is not present in this solution. An exception indicates it was present but not a literal.

Specified by:

getLiteral in interface QuerySolution

Returns:

Resource

contains

public boolean contains(String varName)

Description copied from interface: QuerySolution

Return true if the named variable is in this binding

Specified by:

contains in interface QuerySolution

varNames

public abstract Iterator<String> varNames()

Description copied from interface: QuerySolution

Iterate over the variable names (strings) in this QuerySolution.

Specified by:

varNames in interface QuerySolution

Returns:

Iterator of strings