/// <summary>
/// Creates a new sones GQL instance
/// </summary>
/// <param name="myIGraphDBInstace">The graph database instance on which the gql statements are executed</param>
public SonesQueryLanguage(IGraphDB myIGraphDBInstace)
{
_IGraphDBInstance = myIGraphDBInstace;
_settings = new GraphApplicationSettings(SonesGQLConstants.ApplicationSettingsLocation);
#region plugin manager
_GQLPluginManager = new GQLPluginManager();
#endregion
#region create gql grammar and set extendable members
_GQLGrammar = new SonesGQLGrammar(myIGraphDBInstace);
SetExtendableMember(_GQLGrammar);
#endregion
//build parser
_parser = new Parser(_GQLGrammar);
//check language
if (_parser.Language.ErrorLevel != GrammarErrorLevel.Warning && _parser.Language.ErrorLevel != GrammarErrorLevel.NoError)
{
throw new IronyInitializeGrammarException(_parser.Language.Errors, "");
}
}
private void SetExtendableMember(SonesGQLGrammar myGQLGrammar)
{
#region aggregate
List <IGQLAggregate> aggregates = new List <IGQLAggregate>();
foreach (var plugin in _GQLPluginManager.GetPluginNameForType <IGQLAggregate>())
{
aggregates.Add(_GQLPluginManager.GetAndInitializePlugin <IGQLAggregate>(plugin));
}
if (aggregates.Count == 0)
{
throw new GQLGrammarSetExtandableMemberException(typeof(IGQLAggregate),
"There is no plugin found to set in GQL grammar.");
}
myGQLGrammar.SetAggregates(aggregates);
#endregion
#region functions
List <IGQLFunction> functions = new List <IGQLFunction>();
foreach (var plugin in _GQLPluginManager.GetPluginNameForType <IGQLFunction>())
{
functions.Add(_GQLPluginManager.GetAndInitializePlugin <IGQLFunction>(plugin) as IGQLFunction);
}
if (functions.Count == 0)
{
throw new GQLGrammarSetExtandableMemberException(typeof(IGQLFunction),
"There is no plugin found to set in GQL grammar.");
}
myGQLGrammar.SetFunctions(functions);
#endregion
#region indces
List <String> indices = new List <string>();
indices.AddRange(_GQLPluginManager.GetPluginNameForType <ISonesVersionedIndex>());
indices.AddRange(_GQLPluginManager.GetPluginNameForType <ISonesIndex>());
if (indices.Count < 1)
{
throw new GQLGrammarSetExtandableMemberException(typeof(ISonesIndex),
@"There is no valid index plugin found to set in GQL grammar.");
}
myGQLGrammar.SetIndices(indices);
#endregion
#region import
List <IGraphDBImport> importer = new List <IGraphDBImport>();
foreach (var plugin in _GQLPluginManager.GetPluginNameForType <IGraphDBImport>())
{
importer.Add(_GQLPluginManager.GetAndInitializePlugin <IGraphDBImport>(plugin));
}
if (importer.Count == 0)
{
throw new GQLGrammarSetExtandableMemberException(typeof(IGraphDBImport),
"There is no plugin found to set in GQL grammar.");
}
myGQLGrammar.SetGraphDBImporter(importer);
#endregion
#region export
List <IGraphDBExport> exporter = new List <IGraphDBExport>();
foreach (var plugin in _GQLPluginManager.GetPluginNameForType <IGraphDBExport>())
{
exporter.Add(_GQLPluginManager.GetAndInitializePlugin <IGraphDBExport>(plugin));
}
if (exporter.Count == 0)
{
throw new GQLGrammarSetExtandableMemberException(typeof(IGraphDBExport),
"There is no plugin found to set in GQL grammar.");
}
myGQLGrammar.SetGraphDBExporter(exporter);
#endregion
#region additional statements
List <IGQLStatementPlugin> statements = new List <IGQLStatementPlugin>();
foreach (var plugin in _GQLPluginManager.GetPluginNameForType <IGQLStatementPlugin>())
{
statements.Add(_GQLPluginManager.GetAndInitializePlugin <IGQLStatementPlugin>(plugin,
new Dictionary <string, object>
{
{ "sonesGQL", myGQLGrammar },
{ "graphDB", _IGraphDBInstance }
}));
}
myGQLGrammar.SetStatements(statements);
#endregion
}