Package edu.cornell.mannlib.vitro.webapp.utils

Class SparqlQueryRunner

java.lang.Object

edu.cornell.mannlib.vitro.webapp.utils.SparqlQueryRunner

public class SparqlQueryRunner
extends Object

Execute SPARQL queries against a model. Take the model in the constructor. Then execute as many queries as desired, with the query contained in a String. Exceptions are handled in a tidy manner, and the query environment is closed properly in any case.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	SparqlQueryRunner.QueryParser<T>	This template class provides some parsing methods to help in the parseResults() method.
static interface	SparqlQueryRunner.VariableValue

Constructor Summary

Constructors

Constructor	Description
SparqlQueryRunner(org.apache.jena.rdf.model.Model model)

Method Summary

Modifier and Type	Method	Description
static String	bindValues(String rawString, SparqlQueryRunner.VariableValue... values)
org.apache.jena.rdf.model.Model	executeConstruct(String queryStr)	Execute the CONSTRUCT query and return the resulting model.
<T> T	executeSelect(SparqlQueryRunner.QueryParser<T> parser, String queryStr)	Execute the SELECT query and parse the results, closing and cleaning up afterward.
static edu.cornell.mannlib.vitro.webapp.utils.SparqlQueryRunner.UriValue	uriValue(String name, String uri)

Methods inherited from class java.lang.Object

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

Constructor Detail

SparqlQueryRunner

public SparqlQueryRunner(org.apache.jena.rdf.model.Model model)

Method Detail

executeSelect

public <T> T executeSelect(SparqlQueryRunner.QueryParser<T> parser,
                           String queryStr)

Execute the SELECT query and parse the results, closing and cleaning up afterward. If an exception occurs, return the parser's default value.

executeConstruct

public org.apache.jena.rdf.model.Model executeConstruct(String queryStr)

Execute the CONSTRUCT query and return the resulting model. If an exception occurs, return an empty model.

bindValues

public static String bindValues(String rawString,
                                SparqlQueryRunner.VariableValue... values)

uriValue

public static edu.cornell.mannlib.vitro.webapp.utils.SparqlQueryRunner.UriValue uriValue(String name,
                                                                                         String uri)