com.epimorphics.lda.sources

Class LocalSource

java.lang.Object

com.epimorphics.lda.sources.SourceBase

com.epimorphics.lda.sources.LocalSource

All Implemented Interfaces:

Source

public class LocalSource
extends SourceBase
implements Source

Data source which represents an in-memory model loaded from a local file. Used for testing. Model will be reloaded from file each time this class is constructed!

Version:

$Revision: $

Author:

Dave Reynolds

Nested Class Summary

Nested classes/interfaces inherited from interface com.epimorphics.lda.sources.Source

Source.ResultSetConsumer, Source.Util

Field Summary

Fields

Modifier and Type	Field and Description
protected String	endpoint
static String	PREFIX
protected com.hp.hpl.jena.rdf.model.Model	source
protected com.hp.hpl.jena.query.Dataset	sourceDataset

Constructor Summary

Constructors

Constructor and Description
LocalSource(com.hp.hpl.jena.util.FileManager fm, com.hp.hpl.jena.rdf.model.Resource endpoint)

Method Summary

Methods

Modifier and Type	Method and Description
void	addMetadata(com.hp.hpl.jena.rdf.model.Resource meta) Add metadata describing this source to a metdata model
com.hp.hpl.jena.query.QueryExecution	execute(com.hp.hpl.jena.query.Query query) Each SourceBase subclass must provide execute.
com.hp.hpl.jena.shared.Lock	getLock() Each SourceBase subclass must provide a Lock on demand.
boolean	supportsNestedSelect() Local sources are held in in-memory models and support nested selects via ARQ.
String	toString() Return a name for this source, used for error reporting

Methods inherited from class com.epimorphics.lda.sources.SourceBase

executeConstruct, executeDescribe, executeSelect, getTextSearchConfig

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.epimorphics.lda.sources.Source

executeConstruct, executeDescribe, executeSelect, getTextSearchConfig

Field Detail

PREFIX

public static final String PREFIX

See Also:

Constant Field Values

source

protected final com.hp.hpl.jena.rdf.model.Model source

endpoint

protected final String endpoint

sourceDataset

protected final com.hp.hpl.jena.query.Dataset sourceDataset

Constructor Detail

LocalSource

public LocalSource(com.hp.hpl.jena.util.FileManager fm,
           com.hp.hpl.jena.rdf.model.Resource endpoint)

Method Detail

execute

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

Description copied from class: SourceBase

Each SourceBase subclass must provide execute.

Specified by:

execute in class SourceBase

getLock

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

Description copied from class: SourceBase

Each SourceBase subclass must provide a Lock on demand.

Specified by:

getLock in class SourceBase

toString

public String toString()

Description copied from interface: Source

Return a name for this source, used for error reporting

Specified by:

toString in interface Source

Overrides:

toString in class Object

addMetadata

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

Add metadata describing this source to a metdata model

Specified by:

addMetadata in interface Source

supportsNestedSelect

public boolean supportsNestedSelect()

Local sources are held in in-memory models and support nested selects via ARQ.

Specified by:

supportsNestedSelect in interface Source