QueryContextExtensions.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.Diagnostics;
using Deveel.Data.Transactions;

namespace Deveel.Data.Sql.Triggers {
    public static class QueryContextExtensions {
        public static void FireTriggers(this IQueryContext context, TableEventContext tableEvent) {
            var manager = context.Session().Transaction.GetTriggerManager();
            if (manager == null)
                return;

            manager.FireTriggers(context, tableEvent);
        }

        //public static void FireTrigger(this IQueryContext context, TableEventContext tableEvent) {
        //  var tableName = tableEvent.Table.FullName;
        //  var eventType = tableEvent.EventType;

        //  try {
        //      var triggers = context.Session.FindTriggers(tableName, eventType);

        //      foreach (var trigger in triggers) {
        //          try {
        //              trigger.Invoke(tableEvent);

        //              var oldRowId = tableEvent.OldRowId;
        //              var newRow = tableEvent.NewRow;

        //              context.FireTrigger(trigger.TriggerName, tableName, eventType, oldRowId, newRow);
        //          } catch (Exception ex) {
        //              context.RegisterTriggerError(trigger, ex);
        //          }
        //      }
        //  } catch (TableEventException ex) {
        //      context.RegisterError(ex);
        //      throw;
        //  } catch (Exception ex) {
        //      context.RegisterTableEventError(tableEvent, ex);
        //      throw new TableEventException(tableEvent, ex);
        //  }
        //}

        //private static void RegisterTriggerError(this IQueryContext context, Trigger trigger, Exception error) {
        //  context.RegisterError(new TriggerException(trigger, error));
        //}

        //private static void RegisterTableEventError(this IQueryContext context, TableEventContext @event, Exception error) {
        //  context.RegisterError(new TableEventException(@event, error));
        //}

        public static void CreateTrigger(this IQueryContext context, TriggerInfo triggerInfo) {
            context.Session().CreateTrigger(triggerInfo);
        }

        public static void CreateCallbackTrigger(this IQueryContext context, ObjectName triggerName, TriggerEventType eventType) {
            context.CreateTrigger(new TriggerInfo(triggerName, eventType));
        }

        public static bool TriggerExists(this IQueryContext context, ObjectName triggerName) {
            return context.Session().TriggerExists(triggerName);
        }
    }
}