SystemContextExtensions.cs

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// 
//  Copyright 2010-2015 Deveel
// 
//    Licensed under the Apache License, Version 2.0 (the "License");
//    you may not use this file except in compliance with the License.
//    You may obtain a copy of the License at
// 
//        http://www.apache.org/licenses/LICENSE-2.0
// 
//    Unless required by applicable law or agreed to in writing, software
//    distributed under the License is distributed on an "AS IS" BASIS,
//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//    See the License for the specific language governing permissions and
//    limitations under the License.
//

using System;

using Deveel.Data;
using Deveel.Data.Services;

namespace Deveel.Data.Routines {
    public static class SystemContextExtensions {
        public static IRoutine ResolveRoutine(this ISystemContext context, Invoke invoke, IQuery queryContext) {
            var resolvers = context.ResolveAllServices<IRoutineResolver>();
            foreach (var resolver in resolvers) {
                var routine = resolver.ResolveRoutine(invoke, queryContext);
                if (routine != null)
                    return routine;
            }

            return null;
        }

        public static void UseRoutineResolver<TResolver>(this ISystemContext context) where TResolver : class, IRoutineResolver {
            context.RegisterService<TResolver>();
        }

        public static void UseRoutineResolver<TResolver>(this ISystemContext context, TResolver resolver)
            where TResolver : class, IRoutineResolver {
            context.RegisterInstance(resolver);
        }

        public static void UseSystemFunctions(this ISystemContext context) {
            context.UseRoutineResolver(new SystemFunctionsProvider());
        }
    }
}