com.epimorphics.lda.sources

Class SourceBase

java.lang.Object

com.epimorphics.lda.sources.SourceBase

Direct Known Subclasses:

CombinedSource, HereSource, LocalSource, SparqlSource, TDBSource

public abstract class SourceBase
extends Object

SourceBase provides the canonical implementation of the extended Source operations.

Author:

chris

Constructor Summary

Constructors

Constructor and Description
SourceBase()
SourceBase(com.hp.hpl.jena.rdf.model.Resource endpoint)

Method Summary

Methods

Modifier and Type	Method and Description
abstract com.hp.hpl.jena.query.QueryExecution	execute(com.hp.hpl.jena.query.Query query) Each SourceBase subclass must provide execute.
com.hp.hpl.jena.rdf.model.Model	executeConstruct(com.hp.hpl.jena.query.Query query) query must be a CONSTRUCT query.
com.hp.hpl.jena.rdf.model.Model	executeDescribe(com.hp.hpl.jena.query.Query query) query must be a DESCRIBE query.
void	executeSelect(com.hp.hpl.jena.query.Query q, Source.ResultSetConsumer c) q must be a SELECT query.
abstract com.hp.hpl.jena.shared.Lock	getLock() Each SourceBase subclass must provide a Lock on demand.
TextSearchConfig	getTextSearchConfig()

Methods inherited from class java.lang.Object

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

Constructor Detail

SourceBase

public SourceBase()

SourceBase

public SourceBase(com.hp.hpl.jena.rdf.model.Resource endpoint)

Method Detail

getTextSearchConfig

public TextSearchConfig getTextSearchConfig()

execute

public abstract com.hp.hpl.jena.query.QueryExecution execute(com.hp.hpl.jena.query.Query query)

Each SourceBase subclass must provide execute.

getLock

public abstract com.hp.hpl.jena.shared.Lock getLock()

Each SourceBase subclass must provide a Lock on demand.

executeDescribe

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

query must be a DESCRIBE query. Answer the model which is the description.

executeConstruct

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

query must be a CONSTRUCT query. Answer the model which is constructed.

executeSelect

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

q must be a SELECT query. c.setup() is called on the QueryExecution object to do any setup (ie, LARQ index enabling). Then c.consume is supplied with the resultset from the select. When that returns, the execution object is closed.