org.eaglei.search.provider.rdf
Class AbstractRDFProvider

java.lang.Object
  org.eaglei.search.provider.rdf.AbstractRDFProvider

All Implemented Interfaces:

org.eaglei.search.provider.SearchProvider

Direct Known Subclasses:

RDFModelProvider, RepositoryHarvester, SPARQLProtocolProvider

public abstract class AbstractRDFProvider
extends java.lang.Object
implements org.eaglei.search.provider.SearchProvider

SearchProvider implementation for an RDF repository. Maps a SearchRequest into a SPARQL query and converts the SPARQL ResultSet into SearchResults.

Author:

rfrost

Field Summary

protected org.eaglei.model.EIOntModel	eagleiOntModel
protected org.eaglei.model.EIEntity	institution
protected static java.lang.String	OBJECT
protected static java.lang.String	OBJECT_LABEL
protected static java.lang.String	OBJECT_TYPE
protected static java.lang.String	PREDICATE
protected java.util.List<org.eaglei.model.EIURI>	prefLabelProperties
protected RepositoryConfig	repoConfig
protected static java.lang.String	SUBJECT

Constructor Summary

AbstractRDFProvider(org.eaglei.model.EIOntModel eagleiOntModel, org.eaglei.model.EIEntity institution, RepositoryConfig repoConfig)
Creates a new SearchProvider that executes SPARQL queries against an underlying RDF repository.

Method Summary

org.eaglei.search.provider.SearchCounts	count(org.eaglei.search.provider.SearchCountRequest request)
protected org.eaglei.search.provider.SearchResult	createSearchResultFromModel(java.lang.String uri, com.hp.hpl.jena.rdf.model.Model model) Creates a SearchResult from an Model holding only RDF triples associated with that subject URI
protected org.eaglei.search.provider.SearchResultSet	createSearchResultSet(java.util.List<org.eaglei.search.provider.SearchResult> results, org.eaglei.search.provider.SearchRequest request)
static java.lang.String	createSPARQLString(org.eaglei.search.provider.SearchRequest request) Create a SPARQL SELECT query against the repository as an ARQ Query.
org.eaglei.model.EIEntity	getInstitution()
protected abstract com.hp.hpl.jena.query.QueryExecution	getQueryExecution(com.hp.hpl.jena.query.Query query) Gets an ARQ QueryExecution for the Query.
protected java.util.List<org.eaglei.search.provider.SearchResult>	getSearchResultsFromSPARQLResults(java.util.List<com.hp.hpl.jena.query.QuerySolution> solns, org.eaglei.search.provider.SearchRequest request)
void	init()
org.eaglei.search.provider.SearchResultSet	query(org.eaglei.search.provider.SearchRequest request)

Methods inherited from class java.lang.Object

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

Field Detail

SUBJECT

protected static final java.lang.String SUBJECT

See Also:

Constant Field Values

PREDICATE

protected static final java.lang.String PREDICATE

See Also:

Constant Field Values

OBJECT

protected static final java.lang.String OBJECT

See Also:

Constant Field Values

OBJECT_LABEL

protected static final java.lang.String OBJECT_LABEL

See Also:

Constant Field Values

OBJECT_TYPE

protected static final java.lang.String OBJECT_TYPE

See Also:

Constant Field Values

eagleiOntModel

protected final org.eaglei.model.EIOntModel eagleiOntModel

prefLabelProperties

protected java.util.List<org.eaglei.model.EIURI> prefLabelProperties

institution

protected final org.eaglei.model.EIEntity institution

repoConfig

protected final RepositoryConfig repoConfig

Constructor Detail

AbstractRDFProvider

public AbstractRDFProvider(org.eaglei.model.EIOntModel eagleiOntModel,
                           org.eaglei.model.EIEntity institution,
                           RepositoryConfig repoConfig)

Creates a new SearchProvider that executes SPARQL queries against an underlying RDF repository.

Method Detail

init

public void init()
          throws java.io.IOException

Specified by:

init in interface org.eaglei.search.provider.SearchProvider

Throws:

java.io.IOException

getInstitution

public org.eaglei.model.EIEntity getInstitution()

query

public org.eaglei.search.provider.SearchResultSet query(org.eaglei.search.provider.SearchRequest request)
                                                 throws java.io.IOException

Specified by:

query in interface org.eaglei.search.provider.SearchProvider

Throws:

java.io.IOException

count

public org.eaglei.search.provider.SearchCounts count(org.eaglei.search.provider.SearchCountRequest request)
                                              throws java.io.IOException

Specified by:

count in interface org.eaglei.search.provider.SearchProvider

Throws:

java.io.IOException

createSPARQLString

public static java.lang.String createSPARQLString(org.eaglei.search.provider.SearchRequest request)

Create a SPARQL SELECT query against the repository as an ARQ Query.

Parameters:

request - The SearchRequest

Returns:

SPARQL Query String.

getQueryExecution

protected abstract com.hp.hpl.jena.query.QueryExecution getQueryExecution(com.hp.hpl.jena.query.Query query)

Gets an ARQ QueryExecution for the Query.

Parameters:

query - Query

Returns:

QueryExecution

getSearchResultsFromSPARQLResults

protected java.util.List<org.eaglei.search.provider.SearchResult> getSearchResultsFromSPARQLResults(java.util.List<com.hp.hpl.jena.query.QuerySolution> solns,
                                                                                                    org.eaglei.search.provider.SearchRequest request)

createSearchResultFromModel

protected org.eaglei.search.provider.SearchResult createSearchResultFromModel(java.lang.String uri,
                                                                              com.hp.hpl.jena.rdf.model.Model model)

Creates a SearchResult from an Model holding only RDF triples associated with that subject URI

Returns:

SearchResult or null if it could not be created.

createSearchResultSet

protected org.eaglei.search.provider.SearchResultSet createSearchResultSet(java.util.List<org.eaglei.search.provider.SearchResult> results,
                                                                           org.eaglei.search.provider.SearchRequest request)