Esempio n. 1
0
        public static IReadOnlyList <KeyValuePair <String, Object?> > GetParameters(IEdmModel edmModel, ODataPathSegment segment,
                                                                                    IDictionary <string, SingleValueNode> parameterAliasNodes, Stream?requestStream = null, String?contentType = null)
        {
            var parameters = new List <KeyValuePair <String, Object?> >();

            IEdmOperation operation;
            IEnumerable <OperationSegmentParameter> segmentParameters;

            if (segment is OperationSegment operationSegment)
            {
                segmentParameters = operationSegment.Parameters;
                operation         = operationSegment.Operations.Single();
            }
            else if (segment is OperationImportSegment operationImportSegment)
            {
                segmentParameters = operationImportSegment.Parameters;
                operation         = (EdmOperation)operationImportSegment.OperationImports.Single().Operation;
            }
            else
            {
                throw new InvalidOperationException("Not supported segment type " + segment.GetType().Name);
            }

            foreach (OperationSegmentParameter segmentParameter in segmentParameters)
            {
                Object?value;
                if (segmentParameter.Value is ConstantNode constantNode)
                {
                    value = OeEdmClrHelper.GetValue(edmModel, constantNode.Value);
                }
                else if (segmentParameter.Value is ConvertNode convertNode)
                {
                    value = OeEdmClrHelper.GetValue(edmModel, ((ConstantNode)convertNode.Source).Value);
                }
                else if (segmentParameter.Value is ParameterAliasNode parameterAliasNode)
                {
                    value = OeEdmClrHelper.GetValue(edmModel, ((ConstantNode)parameterAliasNodes[parameterAliasNode.Alias]).Value);
                }
                else
                {
                    value = OeEdmClrHelper.GetValue(edmModel, segmentParameter.Value);
                }

                parameters.Add(new KeyValuePair <String, Object?>(segmentParameter.Name, value));
            }

            if (parameters.Count == 0 && requestStream != null)
            {
                FillParameters(edmModel, parameters, requestStream, operation, contentType);
            }
            OrderParameters(operation.Parameters, parameters);

            return(parameters);
        }
Esempio n. 2
0
        /// <summary>
        /// Parses incoming feed/entry/property queries, resolves against the data store and formulates the response.
        /// </summary>
        /// <returns>Stream containing the query results if successful, otherwise an error.</returns>
        public Stream ProcessGetQuery(string requestUri)
        {
            object       queryResults = null;
            QueryContext queryContext;

            try
            {
                queryContext = this.GetDefaultQueryContext();
                queryResults = queryContext.ResolveQuery(this.Model, this.DataContext);
            }
            catch (Exception error)
            {
                return(this.WriteErrorResponse(400, error));
            }

            return(this.WriteResponse(200, (messageWriter, writerSettings, message) =>
            {
                IEdmEntitySet entitySet = queryContext.ResolveEntitySet();
                ODataPathSegment lastSegment = queryContext.QueryPath.LastSegment;
                var expandedProperties = Enumerable.Empty <string>();

                if (lastSegment is EntitySetSegment)
                {
                    ODataWriter resultWriter = messageWriter.CreateODataFeedWriter(entitySet);
                    ResponseWriter.WriteFeed(resultWriter, queryResults as IQueryable, entitySet, this.Model, writerSettings.Version.GetValueOrDefault(), expandedProperties);
                    resultWriter.Flush();
                }
                else if (lastSegment is KeySegment)
                {
                    ODataWriter resultWriter = messageWriter.CreateODataEntryWriter(entitySet);
                    ResponseWriter.WriteEntry(resultWriter, queryResults, entitySet, this.Model, writerSettings.Version.GetValueOrDefault(), expandedProperties);
                    resultWriter.Flush();
                }
                else if (lastSegment is PropertySegment)
                {
                    ODataProperty property = ODataObjectModelConverter.CreateODataProperty(queryResults, (lastSegment as PropertySegment).Property.Name);
                    messageWriter.WriteProperty(property);
                }
                else
                {
                    throw new ODataErrorException("Unsupported URI segment " + lastSegment.GetType());
                }
            }));
        }
Esempio n. 3
0
        private void BuildSelections(
            SelectExpandClause selectExpandClause,
            HashSet<IEdmStructuralProperty> allStructuralProperties,
            HashSet<IEdmStructuralProperty> allNestedProperties,
            HashSet<IEdmNavigationProperty> allNavigationProperties,
            HashSet<IEdmAction> allActions,
            HashSet<IEdmFunction> allFunctions)
        {
            foreach (SelectItem selectItem in selectExpandClause.SelectedItems)
            {
                if (selectItem is ExpandedNavigationSelectItem)
                {
                    continue;
                }

                PathSelectItem pathSelectItem = selectItem as PathSelectItem;
                if (pathSelectItem != null)
                {
                    ValidatePathIsSupported(pathSelectItem.SelectedPath);
                    ODataPathSegment segment = pathSelectItem.SelectedPath.LastSegment;

                    NavigationPropertySegment navigationPropertySegment = segment as NavigationPropertySegment;
                    if (navigationPropertySegment != null)
                    {
                        IEdmNavigationProperty navigationProperty = navigationPropertySegment.NavigationProperty;
                        if (allNavigationProperties.Contains(navigationProperty))
                        {
                            SelectedNavigationProperties.Add(navigationProperty);
                        }
                        continue;
                    }

                    PropertySegment structuralPropertySegment = segment as PropertySegment;
                    if (structuralPropertySegment != null)
                    {
                        IEdmStructuralProperty structuralProperty = structuralPropertySegment.Property;
                        if (allStructuralProperties.Contains(structuralProperty))
                        {
                            SelectedStructuralProperties.Add(structuralProperty);
                        }
                        else if (allNestedProperties.Contains(structuralProperty))
                        {
                            SelectedComplexProperties.Add(structuralProperty);
                        }
                        continue;
                    }

                    OperationSegment operationSegment = segment as OperationSegment;
                    if (operationSegment != null)
                    {
                        AddOperations(allActions, allFunctions, operationSegment);
                        continue;
                    }

                    DynamicPathSegment dynamicPathSegment = segment as DynamicPathSegment;
                    if (dynamicPathSegment != null)
                    {
                        SelectedDynamicProperties.Add(dynamicPathSegment.Identifier);
                        continue;
                    }
                    throw new ODataException(Error.Format(SRResources.SelectionTypeNotSupported, segment.GetType().Name));
                }

                WildcardSelectItem wildCardSelectItem = selectItem as WildcardSelectItem;
                if (wildCardSelectItem != null)
                {
                    SelectedStructuralProperties = allStructuralProperties;
                    SelectedComplexProperties = allNestedProperties;
                    SelectedNavigationProperties = allNavigationProperties;
                    SelectAllDynamicProperties = true;
                    continue;
                }

                NamespaceQualifiedWildcardSelectItem wildCardActionSelection = selectItem as NamespaceQualifiedWildcardSelectItem;
                if (wildCardActionSelection != null)
                {
                    SelectedActions = allActions;
                    SelectedFunctions = allFunctions;
                    continue;
                }

                throw new ODataException(Error.Format(SRResources.SelectionTypeNotSupported, selectItem.GetType().Name));
            }
        }
Esempio n. 4
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        /// <summary>
        /// Build the $select item, it maybe $select=complex/abc, $select=abc, $select=nav, etc.
        /// </summary>
        /// <param name="pathSelectItem">The expanded reference select item.</param>
        /// <param name="currentLevelPropertiesInclude">The current properties to include at current level.</param>
        /// <param name="structuralTypeInfo">The structural type properties.</param>
        private void BuildSelectItem(PathSelectItem pathSelectItem,
                                     IDictionary <IEdmStructuralProperty, SelectExpandIncludedProperty> currentLevelPropertiesInclude,
                                     EdmStructuralTypeInfo structuralTypeInfo)
        {
            Contract.Assert(pathSelectItem != null && pathSelectItem.SelectedPath != null);
            Contract.Assert(currentLevelPropertiesInclude != null);
            Contract.Assert(structuralTypeInfo != null);

            // Verify and process the $select=abc/xyz/....
            ODataSelectPath          selectPath = pathSelectItem.SelectedPath;
            IList <ODataPathSegment> remainingSegments;
            ODataPathSegment         segment = selectPath.GetFirstNonTypeCastSegment(out remainingSegments);

            PropertySegment firstPropertySegment = segment as PropertySegment;

            if (firstPropertySegment != null)
            {
                if (structuralTypeInfo.IsStructuralPropertyDefined(firstPropertySegment.Property))
                {
                    // $select=abc/xyz/...
                    SelectExpandIncludedProperty newPropertySelectItem;
                    if (!currentLevelPropertiesInclude.TryGetValue(firstPropertySegment.Property, out newPropertySelectItem))
                    {
                        newPropertySelectItem = new SelectExpandIncludedProperty(firstPropertySegment);
                        currentLevelPropertiesInclude[firstPropertySegment.Property] = newPropertySelectItem;
                    }

                    newPropertySelectItem.AddSubSelectItem(remainingSegments, pathSelectItem);
                }

                return;
            }

            // If the first segment is not a property segment,
            // that segment must be the last segment, so the remainging segments should be null.
            Contract.Assert(remainingSegments == null);

            NavigationPropertySegment navigationSegment = segment as NavigationPropertySegment;

            if (navigationSegment != null)
            {
                // for example: $select=NavigationProperty or $select=NS.VipCustomer/VipNav
                if (structuralTypeInfo.IsNavigationPropertyDefined(navigationSegment.NavigationProperty))
                {
                    if (SelectedNavigationProperties == null)
                    {
                        SelectedNavigationProperties = new HashSet <IEdmNavigationProperty>();
                    }

                    SelectedNavigationProperties.Add(navigationSegment.NavigationProperty);
                }

                return;
            }

            OperationSegment operationSegment = segment as OperationSegment;

            if (operationSegment != null)
            {
                // for example: $select=NS.Operation, or, $select=NS.VipCustomer/NS.Operation
                AddOperations(operationSegment, structuralTypeInfo.AllActions, structuralTypeInfo.AllFunctions);
                return;
            }

            DynamicPathSegment dynamicPathSegment = segment as DynamicPathSegment;

            if (dynamicPathSegment != null)
            {
                if (SelectedDynamicProperties == null)
                {
                    SelectedDynamicProperties = new HashSet <string>();
                }

                SelectedDynamicProperties.Add(dynamicPathSegment.Identifier);
                return;
            }

            // In fact, we should never be here, because it's verified above
            throw new ODataException(Error.Format(SRResources.SelectionTypeNotSupported, segment.GetType().Name));
        }
Esempio n. 5
0
        private void BuildSelections(SelectExpandClause selectExpandClause, HashSet <IEdmStructuralProperty> allStructuralProperties, HashSet <IEdmNavigationProperty> allNavigationProperties, HashSet <IEdmFunctionImport> allActions)
        {
            foreach (SelectItem selectItem in selectExpandClause.SelectedItems)
            {
                if (selectItem is ExpandedNavigationSelectItem)
                {
                    continue;
                }

                PathSelectItem pathSelectItem = selectItem as PathSelectItem;

                if (pathSelectItem != null)
                {
                    ValidatePathIsSupported(pathSelectItem.SelectedPath);
                    ODataPathSegment segment = pathSelectItem.SelectedPath.LastSegment;

                    NavigationPropertySegment navigationPropertySegment = segment as NavigationPropertySegment;
                    if (navigationPropertySegment != null)
                    {
                        IEdmNavigationProperty navigationProperty = navigationPropertySegment.NavigationProperty;
                        if (allNavigationProperties.Contains(navigationProperty))
                        {
                            SelectedNavigationProperties.Add(navigationProperty);
                        }
                        continue;
                    }

                    PropertySegment structuralPropertySegment = segment as PropertySegment;
                    if (structuralPropertySegment != null)
                    {
                        IEdmStructuralProperty structuralProperty = structuralPropertySegment.Property;
                        if (allStructuralProperties.Contains(structuralProperty))
                        {
                            SelectedStructuralProperties.Add(structuralProperty);
                        }
                        continue;
                    }

                    OperationSegment operationSegment = segment as OperationSegment;
                    if (operationSegment != null)
                    {
                        foreach (IEdmFunctionImport action in operationSegment.Operations)
                        {
                            if (allActions.Contains(action))
                            {
                                SelectedActions.Add(action);
                            }
                        }
                        continue;
                    }

                    throw new ODataException(Error.Format(SRResources.SelectionTypeNotSupported, segment.GetType().Name));
                }

                WildcardSelectItem wildCardSelectItem = selectItem as WildcardSelectItem;
                if (wildCardSelectItem != null)
                {
                    SelectedStructuralProperties = allStructuralProperties;
                    SelectedNavigationProperties = allNavigationProperties;
                    continue;
                }

                ContainerQualifiedWildcardSelectItem wildCardActionSelection = selectItem as ContainerQualifiedWildcardSelectItem;
                if (wildCardActionSelection != null)
                {
                    IEnumerable <IEdmFunctionImport> actionsInThisContainer = allActions.Where(a => a.Container == wildCardActionSelection.Container);
                    foreach (IEdmFunctionImport action in actionsInThisContainer)
                    {
                        SelectedActions.Add(action);
                    }
                    continue;
                }

                throw new ODataException(Error.Format(SRResources.SelectionTypeNotSupported, selectItem.GetType().Name));
            }
        }