/// <summary>
/// Creates a new Full Text Pattern
/// </summary>
/// <param name="matchVar">Match Variable</param>
/// <param name="scoreVar">Score Variable</param>
/// <param name="searchTerm">Search Term</param>
public FullTextPattern(PatternItem matchVar, PatternItem scoreVar, PatternItem searchTerm)
{
this._matchVar = matchVar;
this._scoreVar = scoreVar;
this._searchTerm = searchTerm;
NodeFactory factory = new NodeFactory();
if (this._scoreVar != null)
{
BlankNodePattern a = new BlankNodePattern(factory.GetNextBlankNodeID());
BlankNodePattern b = new BlankNodePattern(factory.GetNextBlankNodeID());
this._origPatterns.Add(new TriplePattern(a, new NodeMatchPattern(factory.CreateUriNode(new Uri(FullTextHelper.FullTextMatchPredicateUri))), this._searchTerm));
this._origPatterns.Add(new TriplePattern(a, new NodeMatchPattern(factory.CreateUriNode(new Uri(RdfSpecsHelper.RdfListFirst))), this._matchVar));
this._origPatterns.Add(new TriplePattern(a, new NodeMatchPattern(factory.CreateUriNode(new Uri(RdfSpecsHelper.RdfListRest))), b));
this._origPatterns.Add(new TriplePattern(b, new NodeMatchPattern(factory.CreateUriNode(new Uri(RdfSpecsHelper.RdfListFirst))), this._scoreVar));
this._origPatterns.Add(new TriplePattern(b, new NodeMatchPattern(factory.CreateUriNode(new Uri(RdfSpecsHelper.RdfListRest))), new NodeMatchPattern(factory.CreateUriNode(new Uri(RdfSpecsHelper.RdfListNil)))));
}
else
{
this._origPatterns.Add(new TriplePattern(this._matchVar, new NodeMatchPattern(factory.CreateUriNode(new Uri(FullTextHelper.FullTextMatchPredicateUri))), this._searchTerm));
}
}
/// <summary>
/// Helper method which converts a SemWeb resource into a PatternItem for use in a SPARQL Triple Pattern
/// </summary>
/// <param name="r">Resource</param>
/// <param name="mapping">Mapping of Variables & Blank Nodes to Pattern Items</param>
/// <param name="g">Graph</param>
/// <returns></returns>
private PatternItem FromSemWeb(Resource r, IGraph g, Dictionary<String, PatternItem> mapping)
{
if (r is Variable)
{
if (mapping.ContainsKey(r.ToString()))
{
return mapping[r.ToString()];
}
else
{
PatternItem temp = new VariablePattern(r.ToString());
mapping.Add(r.ToString(), temp);
return temp;
}
}
else if (r is BNode)
{
if (mapping.ContainsKey(r.ToString()))
{
return mapping[r.ToString()];
}
else
{
PatternItem temp = new BlankNodePattern(r.ToString().Substring(2));
mapping.Add(r.ToString(), temp);
return temp;
}
}
else
{
return new NodeMatchPattern(SemWebConverter.FromSemWeb(r, this.GetMapping(g)));
}
}
/// <summary>
/// Creates a new Full Text Pattern
/// </summary>
/// <param name="matchVar">Match Variable</param>
/// <param name="scoreVar">Score Variable</param>
/// <param name="searchTerm">Search Term</param>
public FullTextPattern(PatternItem matchVar, PatternItem scoreVar, PatternItem searchTerm)
{
this._matchVar = matchVar;
this._scoreVar = scoreVar;
this._searchTerm = searchTerm;
NodeFactory factory = new NodeFactory();
if (this._scoreVar != null)
{
BlankNodePattern a = new BlankNodePattern(factory.GetNextBlankNodeID());
BlankNodePattern b = new BlankNodePattern(factory.GetNextBlankNodeID());
this._origPatterns.Add(new TriplePattern(a, new NodeMatchPattern(factory.CreateUriNode(new Uri(FullTextHelper.FullTextMatchPredicateUri))), this._searchTerm));
this._origPatterns.Add(new TriplePattern(a, new NodeMatchPattern(factory.CreateUriNode(new Uri(RdfSpecsHelper.RdfListFirst))), this._matchVar));
this._origPatterns.Add(new TriplePattern(a, new NodeMatchPattern(factory.CreateUriNode(new Uri(RdfSpecsHelper.RdfListRest))), b));
this._origPatterns.Add(new TriplePattern(b, new NodeMatchPattern(factory.CreateUriNode(new Uri(RdfSpecsHelper.RdfListFirst))), this._scoreVar));
this._origPatterns.Add(new TriplePattern(b, new NodeMatchPattern(factory.CreateUriNode(new Uri(RdfSpecsHelper.RdfListRest))), new NodeMatchPattern(factory.CreateUriNode(new Uri(RdfSpecsHelper.RdfListNil)))));
}
else
{
this._origPatterns.Add(new TriplePattern(this._matchVar, new NodeMatchPattern(factory.CreateUriNode(new Uri(FullTextHelper.FullTextMatchPredicateUri))), this._searchTerm));
}
}
