edu.cornell.mannlib.vitro.webapp.utils.sparql

Class SelectQueryRunner

java.lang.Object

edu.cornell.mannlib.vitro.webapp.utils.sparql.SelectQueryRunner

public final class SelectQueryRunner
extends Object

A conversational tool for handling SPARQL queries. Examples: List<String> values = createQueryContext(rdfService, queryString) .bindVariableToUri("uri", uri) .execute() .getStringFields("partner") .flatten(); SelectQueryHolder q = selectQuery(queryString) .bindToUri("uri", uri)); List<Map<String, String> map = createQueryContext(rdfService, q) .execute() .getStringFields(); The execute() method does not actually execute the query: it merely sets it up syntactically. If you don't supply any field names to getStringFields(), you get all of them. Any string value that returns a blank or empty string is omitted from the results. Any row that returns no values is omitted from the results.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	SelectQueryRunner.ExecutingSelectQueryContext
static interface	SelectQueryRunner.SelectQueryContext
static interface	SelectQueryRunner.StringResultsMapping

Method Summary

Modifier and Type	Method and Description
static SelectQueryRunner.SelectQueryContext	createQueryContext(RDFService rdfService, SelectQueryHolder query)
static SelectQueryRunner.SelectQueryContext	createQueryContext(RDFService rdfService, String queryString)
static SelectQueryHolder	selectQuery(String queryString)

Methods inherited from class java.lang.Object

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

Method Detail

selectQuery

public static SelectQueryHolder selectQuery(String queryString)

createQueryContext

public static SelectQueryRunner.SelectQueryContext createQueryContext(RDFService rdfService,
                                                                      String queryString)

createQueryContext

public static SelectQueryRunner.SelectQueryContext createQueryContext(RDFService rdfService,
                                                                      SelectQueryHolder query)