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		/// 
		/// Creates the compiled query from query if function is null.
		/// Sets the MergeOption to the source before compile and back after first invoke.
		/// Be sure, that the source of the query and this source are identical.
		/// At the end, invokes the compiled query and the resultFunction and return the result.
		/// The resultFunction is necessary to force the execution of the query
		/// 
		/// The entity model
		/// The type of the arg0.
		/// The type of the arg1.
		/// The type of the result query.
		/// The type of the result.
		/// The source.
		/// The arg0.
		/// The arg1.
		/// The merge option.
		/// The function.
		/// The query.
		/// The result function.
		/// The result expression.
		/// 
		///	this.AerzteAktuellMitBescheid = 
		///		this.RlvModel.ArztAktuellMitBescheidEntities.CreateAndInvokeCompiledQuery(
		///			this.RlvModel, 
		///			this, 
		///			MergeOption.OverwriteChanges,
		///			ref query_CalculateAerzteAktuellMitBescheid, 
		///			(ctx, ba) =>
		///					(from aamb in ctx.ArztAktuellMitBescheidEntities
		///					 where aamb.Betriebsstaetteid == ba.Betriebsstaetteid
		///					 select aamb),
		///			ref resultQuery_CalculateAerzteAktuellMitBescheid, 
		///			(qresult) => qresult.ToList());
		/// 
		/// 
		public static TResult CreateAndInvokeCompiledQuery(
			this ObjectQuery source,
			TArg0 arg0,
			TArg1 arg1,
			MergeOption mergeOption,
			ref Func function,
			Expression> query,
			ref Func resultFunction,
			Expression> resultExpression)
			where TArg0 : ObjectContext
		{
			TResult result = default(TResult);
			MergeOption? oldMergeOption = null;
			try
			{
				if (function == null)
				{
					if (source.MergeOption != mergeOption)
					{
						oldMergeOption = source.MergeOption;
						source.MergeOption = mergeOption;
					}
					function = CompiledQuery.Compile(query);
				}
				TResultQuery qresult = function.Invoke(arg0, arg1);
				if (resultFunction == null)
				{
					resultFunction = resultExpression.Compile();
				}
				result = resultFunction.Invoke(qresult);
			}
			finally
			{
				if (oldMergeOption.HasValue)
				{
					source.MergeOption = oldMergeOption.Value;
				}
			}
			return result;
		}