/// <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
}
