SystemContext.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.Configuration;
using Deveel.Data.Diagnostics;
using Deveel.Data.Services;

namespace Deveel.Data {
    public sealed class SystemContext : Context, ISystemContext {
        private IScope scope;

        internal SystemContext(IConfiguration configuration, ServiceContainer container) {
            if (configuration == null)
                throw new ArgumentNullException("configuration");

            Configuration = configuration;

            scope = container.OpenScope(ContextNames.System);
            scope.RegisterInstance<IConfiguration>(configuration);
            scope.RegisterInstance<ISystemContext>(this);

            EventRegistry = new EventRegistry(this);
        }

        public IConfiguration Configuration { get; private set; }

        protected override IScope ContextScope {
            get { return scope; }
        }

        protected override string ContextName {
            get { return ContextNames.System; }
        }

        public DatabaseContext CreateDatabaseContext(IConfiguration configuration) {
            return new DatabaseContext(this, configuration);
        }

        IDatabaseContext ISystemContext.CreateDatabaseContext(IConfiguration configuration) {
            var dbConfig = Configuration.MergeWith(configuration);
            return CreateDatabaseContext(dbConfig);
        }

        IEventRegistry IEventScope.EventRegistry {
            get { return EventRegistry; }
        }

        public EventRegistry EventRegistry { get; private set; }

        protected override void Dispose(bool disposing) {
            if (disposing) {
                if (scope != null)
                    scope.Dispose();
            }

            scope = null;
            base.Dispose(true);
        }
    }
}