com.epimorphics.lda.sources

Interface Source

All Known Implementing Classes:

CombinedSource, HereSource, LocalSource, SparqlSource, TDBSource

public interface Source

Abstraction of the data endpoint to be queried. Can be a remote SPARQL service, a restful endpoint or some local model

Version:

$Revision: $

Author:

Dave Reynolds

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	Source.ResultSetConsumer The callback object used for SELECTs.
static class	Source.Util

Method Summary

Methods

Modifier and Type	Method and Description
void	addMetadata(com.hp.hpl.jena.rdf.model.Resource meta) Add metdata describing this source to a metdata model
com.hp.hpl.jena.rdf.model.Model	executeConstruct(com.hp.hpl.jena.query.Query q) Do a CONSTRUCT.
com.hp.hpl.jena.rdf.model.Model	executeDescribe(com.hp.hpl.jena.query.Query q) Do a DESCRIBE.
void	executeSelect(com.hp.hpl.jena.query.Query q, Source.ResultSetConsumer c) Do a SELECT.
TextSearchConfig	getTextSearchConfig() Answer this Source's text search configuration.
boolean	supportsNestedSelect() Answer TRUE iff this source supports nested SELECT queries (as specified by SPARQL 1.1).
String	toString() Return a name for this source, used for error reporting

Method Detail

toString

String toString()

Return a name for this source, used for error reporting

Overrides:

toString in class Object

addMetadata

void addMetadata(com.hp.hpl.jena.rdf.model.Resource meta)

Add metdata describing this source to a metdata model

executeDescribe

com.hp.hpl.jena.rdf.model.Model executeDescribe(com.hp.hpl.jena.query.Query q)

Do a DESCRIBE. Answer the resulting model. Puts a read lock around the access to the underlying data.

executeConstruct

com.hp.hpl.jena.rdf.model.Model executeConstruct(com.hp.hpl.jena.query.Query q)

Do a CONSTRUCT. Answer the resulting model. Puts a read lock around the access to the underlying data.

executeSelect

void executeSelect(com.hp.hpl.jena.query.Query q,
                 Source.ResultSetConsumer c)

Do a SELECT. First run c.setup on the QueryExecution object created from the query. Then run c.consume on the ResultSet of the select. Puts a read lock around the access to the underlying data.

supportsNestedSelect

boolean supportsNestedSelect()

Answer TRUE iff this source supports nested SELECT queries (as specified by SPARQL 1.1).

getTextSearchConfig

TextSearchConfig getTextSearchConfig()

Answer this Source's text search configuration.