/// <summary>
/// Gets the Full Text Results for a specific search query
/// </summary>
/// <param name="graphUris">Graph URIs</param>
/// <param name="provider">Search Provider</param>
/// <param name="search">Search Query</param>
/// <param name="limit">Result Limit</param>
/// <returns></returns>
protected virtual IEnumerable <IFullTextSearchResult> GetResults(IEnumerable <Uri> graphUris, IFullTextSearchProvider provider, string search, int limit)
{
if (this._threshold.HasValue)
{
//Use a Score Threshold
return(provider.Match(graphUris, search, this._threshold.Value, limit));
}
else
{
return(provider.Match(graphUris, search, limit));
}
}
public void FullTextConfigSearchProviderLuceneWithBuildIndex()
{
//Add and test the Index Configuration
IGraph g = this.GetBaseGraph();
INode indexObj = g.CreateBlankNode();
g.Assert(indexObj, g.CreateUriNode("rdf:type"), g.CreateUriNode("dnr-ft:Index"));
g.Assert(indexObj, g.CreateUriNode("dnr:type"), g.CreateLiteralNode("Lucene.Net.Store.RAMDirectory, Lucene.Net"));
g.Assert(indexObj, g.CreateUriNode("dnr-ft:ensureIndex"), (true).ToLiteral(g));
//Add and Test the analyzer Config
INode analyzerObj = g.CreateBlankNode();
g.Assert(analyzerObj, g.CreateUriNode("rdf:type"), g.CreateUriNode("dnr-ft:Analyzer"));
g.Assert(analyzerObj, g.CreateUriNode("dnr:type"), g.CreateLiteralNode("Lucene.Net.Analysis.Standard.StandardAnalyzer, Lucene.Net"));
//Add and Test the schema config
INode schemaObj = g.CreateBlankNode();
g.Assert(schemaObj, g.CreateUriNode("rdf:type"), g.CreateUriNode("dnr-ft:Schema"));
g.Assert(schemaObj, g.CreateUriNode("dnr:type"), g.CreateLiteralNode("VDS.RDF.Query.FullText.Schema.DefaultIndexSchema, dotNetRDF.Query.FullText"));
//Add the Searcher config which ties all the above together
INode searcherObj = g.CreateBlankNode();
g.Assert(searcherObj, g.CreateUriNode("rdf:type"), g.CreateUriNode("dnr-ft:Searcher"));
g.Assert(searcherObj, g.CreateUriNode("dnr:type"), g.CreateLiteralNode("VDS.RDF.Query.FullText.Search.Lucene.LuceneSearchProvider, dotNetRDF.Query.FullText"));
g.Assert(searcherObj, g.CreateUriNode("dnr-ft:index"), indexObj);
g.Assert(searcherObj, g.CreateUriNode("dnr-ft:analyzer"), analyzerObj);
g.Assert(searcherObj, g.CreateUriNode("dnr-ft:schema"), schemaObj);
//Now add the Graph we want to get auto-indexed
INode graphObj = g.CreateBlankNode();
g.Assert(graphObj, g.CreateUriNode("rdf:type"), g.CreateUriNode("dnr:Graph"));
g.Assert(graphObj, g.CreateUriNode("dnr:fromEmbedded"), g.CreateLiteralNode("VDS.RDF.Configuration.configuration.ttl"));
//Then add the Indexer for use by the auto-indexing
INode indexerObj = g.CreateBlankNode();
g.Assert(indexerObj, g.CreateUriNode("rdf:type"), g.CreateUriNode("dnr-ft:Indexer"));
g.Assert(indexerObj, g.CreateUriNode("dnr:type"), g.CreateLiteralNode("VDS.RDF.Query.FullText.Indexing.Lucene.LuceneSubjectsIndexer, dotNetRDF.Query.FullText"));
g.Assert(indexerObj, g.CreateUriNode("dnr-ft:index"), indexObj);
g.Assert(indexerObj, g.CreateUriNode("dnr-ft:analyzer"), analyzerObj);
g.Assert(indexerObj, g.CreateUriNode("dnr-ft:schema"), schemaObj);
//Finally add the properties to indicate we want auto-indexing and what to index
g.Assert(searcherObj, g.CreateUriNode("dnr-ft:buildIndexFor"), graphObj);
g.Assert(searcherObj, g.CreateUriNode("dnr-ft:buildIndexWith"), indexerObj);
TestTools.ShowGraph(g);
ConfigurationLoader.AddObjectFactory(this._factory);
Object temp = ConfigurationLoader.LoadObject(g, searcherObj);
Assert.IsTrue(temp is LuceneSearchProvider, "Should have returned a LuceneSearchProvider Instance");
Assert.IsTrue(temp is IFullTextSearchProvider, "Should have returned a IFullTextSearchProvider Instance");
//Finally check that auto-indexing has worked OK
IFullTextSearchProvider provider = (IFullTextSearchProvider)temp;
try
{
int i = 0;
foreach (IFullTextSearchResult result in provider.Match("http"))
{
Console.WriteLine(result.Node.ToString() + " - " + result.Score.ToString());
i++;
}
Assert.IsTrue(i > 0, "Expected 1 or more result due to the auto-indexed data");
}
finally
{
provider.Dispose();
}
}
