Exemplo n.º 1
0
        /// <summary>
        /// Deletes a <see cref="BinaryRelationship" /> for the selected pair of thing
        /// </summary>
        /// <param name="direction">The direction of the relationship to delete</param>
        /// <returns>The task</returns>
        private Task DeleteRelationship(RelationshipDirectionKind direction)
        {
            if (!(this.SelectedCell is MatrixCellViewModel vm))
            {
                return(Task.FromResult(0));
            }

            var iterationClone = this.iteration.Clone(false);
            var context        = TransactionContextResolver.ResolveContext(iterationClone);
            var transaction    = new ThingTransaction(context, iterationClone);

            foreach (var binaryRelationship in vm.Relationships)
            {
                var clone = binaryRelationship.Clone(false);

                if (vm.RelationshipDirection != RelationshipDirectionKind.BiDirectional ||
                    direction == RelationshipDirectionKind.BiDirectional)
                {
                    // delete every relationship
                    transaction.Delete(clone);
                }
                else if (direction == RelationshipDirectionKind.RowThingToColumnThing &&
                         vm.SourceY.Iid == binaryRelationship.Source.Iid)
                {
                    transaction.Delete(clone);
                }
                else if (direction == RelationshipDirectionKind.ColumnThingToRowThing &&
                         vm.SourceX.Iid == binaryRelationship.Source.Iid)
                {
                    transaction.Delete(clone);
                }
            }

            return(this.session.Write(transaction.FinalizeTransaction()));
        }
Exemplo n.º 2
0
        /// <summary>
        /// Creates a <see cref="BinaryRelationship" /> for the selected cell
        /// </summary>
        /// <param name="direction">The direction fo the relationship to create</param>
        /// <returns>The task</returns>
        private Task CreateRelationship(RelationshipDirectionKind direction)
        {
            var vm = this.SelectedCell as MatrixCellViewModel;

            if (vm == null)
            {
                return(Task.FromResult(0));
            }

            var relationship = new BinaryRelationship(Guid.NewGuid(), null, null)
            {
                Owner = this.session.OpenIterations[this.iteration].Item1
            };

            relationship.Category.Add(vm.Rule.RelationshipCategory);

            relationship.Source =
                direction == RelationshipDirectionKind.RowThingToColumnThing ? vm.SourceY : vm.SourceX;

            relationship.Target =
                direction == RelationshipDirectionKind.RowThingToColumnThing ? vm.SourceX : vm.SourceY;

            var iterationClone = this.iteration.Clone(false);

            iterationClone.Relationship.Add(relationship);

            var context     = TransactionContextResolver.ResolveContext(relationship);
            var transaction = new ThingTransaction(context, iterationClone);

            transaction.Create(relationship, iterationClone);

            return(this.session.Write(transaction.FinalizeTransaction()));
        }