Exemplo n.º 1
0
        // Verifies if provided column node supports delegation.
        protected bool IsDelegatableColumnNode(FirstNameNode node, TexlBinding binding, IOpDelegationStrategy opDelStrategy, DelegationCapability capability)
        {
            Contracts.AssertValue(node);
            Contracts.AssertValue(binding);
            Contracts.AssertValueOrNull(opDelStrategy);
            Contracts.Assert(binding.IsRowScope(node));

            FirstNameInfo firstNameInfo = binding.GetInfo(node.AsFirstName());

            if (firstNameInfo == null)
            {
                return(false);
            }

            IDelegationMetadata metadata = GetCapabilityMetadata(firstNameInfo);

            // This means that this row scoped field is from some parent scope which is non-delegatable. That should deny delegation at that point.
            // For this scope, this means that value will be provided from some other source.
            // For example, AddColumns(CDS, "Column1", LookUp(CDS1, Name in FirstName))
            // CDS - *[Name:s], CDS1 - *[FirstName:s]
            if (metadata == null)
            {
                return(true);
            }

            var columnName = firstNameInfo.Name;

            Contracts.AssertValid(columnName);

            var columnPath = DPath.Root.Append(columnName);

            if (!metadata.FilterDelegationMetadata.IsDelegationSupportedByColumn(columnPath, capability))
            {
                var safeColumnName = CharacterUtils.MakeSafeForFormatString(columnName.Value);
                var message        = string.Format(StringResources.Get(TexlStrings.OpNotSupportedByColumnSuggestionMessage_OpNotSupportedByColumn), safeColumnName);
                SuggestDelegationHintAndAddTelemetryMessage(node, binding, message, TexlStrings.OpNotSupportedByColumnSuggestionMessage_OpNotSupportedByColumn, safeColumnName);
                TrackingProvider.Instance.SetDelegationTrackerStatus(DelegationStatus.NoDelSupportByColumn, node, binding, _function, DelegationTelemetryInfo.CreateNoDelSupportByColumnTelemetryInfo(firstNameInfo));
                return(false);
            }

            // If there is any operator applied on this node then check if column supports operation.
            if (opDelStrategy != null && !opDelStrategy.IsOpSupportedByColumn(metadata.FilterDelegationMetadata, node.AsFirstName(), columnPath, binding))
            {
                return(false);
            }

            return(true);
        }
Exemplo n.º 2
0
        public bool IsValidDottedNameNode(DottedNameNode node, TexlBinding binding, OperationCapabilityMetadata metadata, IOpDelegationStrategy opDelStrategy)
        {
            Contracts.AssertValue(node);
            Contracts.AssertValue(binding);
            Contracts.AssertValueOrNull(opDelStrategy);

            var isRowScoped = binding.IsRowScope(node);

            if (!isRowScoped)
            {
                return(IsValidNode(node, binding));
            }

            bool isRowScopedDelegationExempted;

            if (!IsValidRowScopedDottedNameNode(node, binding, metadata, out isRowScopedDelegationExempted))
            {
                var telemetryMessage = string.Format("Kind:{0}, isRowScoped:{1}",
                                                     node.Kind, isRowScoped);

                SuggestDelegationHintAndAddTelemetryMessage(node, binding, telemetryMessage);
                return(false);
            }

            if (isRowScopedDelegationExempted)
            {
                binding.SetBlockScopedConstantNode(node);
                return(true);
            }

            if (binding.TryGetFullRecordRowScopeAccessInfo(node, out var firstNameInfo))
            {
                // This means that this row scoped field is from some parent scope which is non-delegatable. That should deny delegation at that point.
                // For this scope, this means that value will be provided from some other source.
                // For example, AddColumns(CDS As Left, "Column1", LookUp(CDS1, Left.Name in FirstName))
                // CDS - *[Name:s], CDS1 - *[FirstName:s]
                if (GetCapabilityMetadata(firstNameInfo) == null)
                {
                    return(true);
                }
            }

            if (!binding.GetType(node.Left).HasExpandInfo)
            {
                DPath columnPath;
                if (!BinderUtils.TryConvertNodeToDPath(binding, node, out columnPath) || !metadata.IsDelegationSupportedByColumn(columnPath, _function.FunctionDelegationCapability))
                {
                    var safeColumnName = CharacterUtils.MakeSafeForFormatString(columnPath.ToDottedSyntax());
                    var message        = string.Format(StringResources.Get(TexlStrings.OpNotSupportedByColumnSuggestionMessage_OpNotSupportedByColumn), safeColumnName);
                    SuggestDelegationHintAndAddTelemetryMessage(node, binding, message, TexlStrings.OpNotSupportedByColumnSuggestionMessage_OpNotSupportedByColumn, safeColumnName);
                    TrackingProvider.Instance.SetDelegationTrackerStatus(DelegationStatus.NoDelSupportByColumn, node, binding, _function, DelegationTelemetryInfo.CreateNoDelSupportByColumnTelemetryInfo(columnPath.ToDottedSyntax()));
                    return(false);
                }

                // If there is any operator applied on this node then check if column supports operation.
                return(opDelStrategy?.IsOpSupportedByColumn(metadata, node, columnPath, binding) ?? true);
            }

            // If there is an entity reference then we need to do additional verification.
            IExpandInfo info           = binding.GetType(node.Left).ExpandInfo.VerifyValue();
            var         dataSourceInfo = info.ParentDataSource;

            IDataEntityMetadata entityMetadata;

            if (!dataSourceInfo.DataEntityMetadataProvider.TryGetEntityMetadata(info.Identity, out entityMetadata))
            {
                var telemetryMessage = string.Format("Kind:{0}, isRowScoped:{1}, no metadata found for entity {2}",
                                                     node.Kind, isRowScoped, CharacterUtils.MakeSafeForFormatString(info.Identity));

                SuggestDelegationHintAndAddTelemetryMessage(node, binding, telemetryMessage);
                return(false);
            }

            OperationCapabilityMetadata entityCapabilityMetadata = GetScopedOperationCapabilityMetadata(entityMetadata.DelegationMetadata);
            string maybeLogicalName;
            DName  columnName = node.Right.Name;

            if (entityMetadata.DisplayNameMapping.TryGetFromSecond(node.Right.Name.Value, out maybeLogicalName))
            {
                columnName = new DName(maybeLogicalName);
            }

            var entityColumnPath = DPath.Root.Append(columnName);

            if (!entityCapabilityMetadata.IsDelegationSupportedByColumn(entityColumnPath, _function.FunctionDelegationCapability))
            {
                var safeColumnName = CharacterUtils.MakeSafeForFormatString(columnName.Value);
                var message        = string.Format(StringResources.Get(TexlStrings.OpNotSupportedByColumnSuggestionMessage_OpNotSupportedByColumn), safeColumnName);
                SuggestDelegationHintAndAddTelemetryMessage(node, binding, message, TexlStrings.OpNotSupportedByColumnSuggestionMessage_OpNotSupportedByColumn, safeColumnName);
                TrackingProvider.Instance.SetDelegationTrackerStatus(DelegationStatus.NoDelSupportByColumn, node, binding, _function, DelegationTelemetryInfo.CreateNoDelSupportByColumnTelemetryInfo(columnName));
                return(false);
            }

            // If there is any operator applied on this node then check if column supports operation.
            return(opDelStrategy?.IsOpSupportedByColumn(entityCapabilityMetadata, node, entityColumnPath, binding) ?? true);
        }