/// <summary> /// Binds a DottedIdentifierToken and it's parent node (if needed). /// </summary> /// <param name="dottedIdentifierToken">Token to bind to metadata.</param> /// <param name="state">State of the Binding.</param> /// <returns>A bound node representing the cast.</returns> internal QueryNode BindDottedIdentifier(DottedIdentifierToken dottedIdentifierToken, BindingState state) { DebugUtils.CheckNoExternalCallers(); ExceptionUtils.CheckArgumentNotNull(dottedIdentifierToken, "castToken"); ExceptionUtils.CheckArgumentNotNull(state, "state"); QueryNode parent; IEdmType parentType; if (dottedIdentifierToken.NextToken == null) { parent = NodeFactory.CreateRangeVariableReferenceNode(state.ImplicitRangeVariable); parentType = state.ImplicitRangeVariable.TypeReference.Definition; } else { parent = this.bindMethod(dottedIdentifierToken.NextToken); parentType = parent.GetEdmType(); } SingleEntityNode parentAsSingleValue = parent as SingleEntityNode; IEdmSchemaType childType = UriEdmHelpers.FindTypeFromModel(state.Model, dottedIdentifierToken.Identifier); IEdmEntityType childEntityType = childType as IEdmEntityType; if (childEntityType == null) { FunctionCallBinder functionCallBinder = new FunctionCallBinder(bindMethod); QueryNode functionCallNode; if (functionCallBinder.TryBindDottedIdentifierAsFunctionCall(dottedIdentifierToken, parentAsSingleValue, state, out functionCallNode)) { return(functionCallNode); } else { throw new ODataException(ODataErrorStrings.CastBinder_ChildTypeIsNotEntity(dottedIdentifierToken.Identifier)); } } // Check whether childType is a derived type of the type of its parent node UriEdmHelpers.CheckRelatedTo(parentType, childType); EntityCollectionNode parentAsCollection = parent as EntityCollectionNode; if (parentAsCollection != null) { return(new EntityCollectionCastNode(parentAsCollection, childEntityType)); } // parent can be null for casts on the implicit parameter; this is OK if (parent == null) { return(new SingleEntityCastNode(null, childEntityType)); } Debug.Assert(parentAsSingleValue != null, "If parent of the cast node was not collection, it should be a single value."); return(new SingleEntityCastNode(parentAsSingleValue, childEntityType)); }
/// <summary> /// Follow any type segments on the path, stopping at the first segment that isn't a type token. /// </summary> /// <param name="firstTypeToken">the first type segment</param> /// <param name="model">the model these types are contained in.</param> /// <param name="maxDepth">the maximum recursive depth</param> /// <param name="currentLevelEntityType">the top level entity type, will be overwritten with the last entity type in the chain</param> /// <param name="firstNonTypeToken">the first non type token in the path</param> /// <returns>A path with type segments added to it.</returns> public static IEnumerable <ODataPathSegment> FollowTypeSegments(PathSegmentToken firstTypeToken, IEdmModel model, int maxDepth, ref IEdmEntityType currentLevelEntityType, out PathSegmentToken firstNonTypeToken) { ExceptionUtils.CheckArgumentNotNull(firstTypeToken, "firstTypeToken"); ExceptionUtils.CheckArgumentNotNull(model, "model"); if (!firstTypeToken.IsNamespaceOrContainerQualified()) { throw new ODataException(ODataErrorStrings.SelectExpandPathBinder_FollowNonTypeSegment(firstTypeToken.Identifier)); } int index = 0; List <ODataPathSegment> pathToReturn = new List <ODataPathSegment>(); PathSegmentToken currentToken = firstTypeToken; while (currentToken.IsNamespaceOrContainerQualified() && currentToken.NextToken != null) { IEdmEntityType previousLevelEntityType = currentLevelEntityType; currentLevelEntityType = UriEdmHelpers.FindTypeFromModel(model, currentToken.Identifier) as IEdmEntityType; if (currentLevelEntityType == null) { // TODO: fix this error message? throw new ODataException(ODataErrorStrings.ExpandItemBinder_CannotFindType(currentToken.Identifier)); } UriEdmHelpers.CheckRelatedTo(previousLevelEntityType, currentLevelEntityType); pathToReturn.Add(new TypeSegment(currentLevelEntityType, /*entitySet*/ null)); index++; currentToken = currentToken.NextToken; if (index >= maxDepth) { throw new ODataException(ODataErrorStrings.ExpandItemBinder_PathTooDeep); } } firstNonTypeToken = currentToken; return(pathToReturn); }
/// <summary> /// Binds a DottedIdentifierToken and it's parent node (if needed). /// </summary> /// <param name="dottedIdentifierToken">Token to bind to metadata.</param> /// <param name="state">State of the Binding.</param> /// <returns>A bound node representing the cast.</returns> internal QueryNode BindDottedIdentifier(DottedIdentifierToken dottedIdentifierToken, BindingState state) { ExceptionUtils.CheckArgumentNotNull(dottedIdentifierToken, "castToken"); ExceptionUtils.CheckArgumentNotNull(state, "state"); QueryNode parent = null; IEdmType parentType = null; if (state.ImplicitRangeVariable != null) { if (dottedIdentifierToken.NextToken == null) { parent = NodeFactory.CreateRangeVariableReferenceNode(state.ImplicitRangeVariable); parentType = state.ImplicitRangeVariable.TypeReference.Definition; } else { parent = this.bindMethod(dottedIdentifierToken.NextToken); parentType = parent.GetEdmType(); } } SingleEntityNode parentAsSingleValue = parent as SingleEntityNode; IEdmSchemaType childType = UriEdmHelpers.FindTypeFromModel(state.Model, dottedIdentifierToken.Identifier); IEdmStructuredType childStructuredType = childType as IEdmStructuredType; if (childStructuredType == null) { FunctionCallBinder functionCallBinder = new FunctionCallBinder(bindMethod); QueryNode functionCallNode; if (functionCallBinder.TryBindDottedIdentifierAsFunctionCall(dottedIdentifierToken, parentAsSingleValue, state, out functionCallNode)) { return(functionCallNode); } else if ((!string.IsNullOrEmpty(dottedIdentifierToken.Identifier)) && (dottedIdentifierToken.Identifier[dottedIdentifierToken.Identifier.Length - 1] == '\'')) { // check if it is enum or not EnumBinder enumBinder = new EnumBinder(this.bindMethod); QueryNode enumNode; if (enumBinder.TryBindDottedIdentifierAsEnum(dottedIdentifierToken, parentAsSingleValue, state, out enumNode)) { return(enumNode); } else { throw new ODataException(ODataErrorStrings.Binder_IsNotValidEnumConstant(dottedIdentifierToken.Identifier)); } } else { IEdmTypeReference edmTypeReference = UriEdmHelpers.FindTypeFromModel(state.Model, dottedIdentifierToken.Identifier).ToTypeReference(); if (edmTypeReference is IEdmPrimitiveTypeReference || edmTypeReference is IEdmEnumTypeReference) { return(new ConstantNode(dottedIdentifierToken.Identifier, dottedIdentifierToken.Identifier)); } else { throw new ODataException(ODataErrorStrings.CastBinder_ChildTypeIsNotEntity(dottedIdentifierToken.Identifier)); } } } // Check whether childType is a derived type of the type of its parent node UriEdmHelpers.CheckRelatedTo(parentType, childType); IEdmEntityType childEntityType = childStructuredType as IEdmEntityType; if (childEntityType != null) { EntityCollectionNode parentAsCollection = parent as EntityCollectionNode; if (parentAsCollection != null) { return(new EntityCollectionCastNode(parentAsCollection, childEntityType)); } // parent can be null for casts on the implicit parameter; this is OK if (parent == null) { return(new SingleEntityCastNode(null, childEntityType)); } Debug.Assert(parentAsSingleValue != null, "If parent of the cast node was not collection, it should be a single value."); return(new SingleEntityCastNode(parentAsSingleValue, childEntityType)); } else { IEdmComplexType childComplexType = childStructuredType as IEdmComplexType; Debug.Assert(childComplexType != null, "If it is not entity type, it should be complex type"); CollectionPropertyAccessNode parentAsCollectionProperty = parent as CollectionPropertyAccessNode; if (parentAsCollectionProperty != null) { return(new CollectionPropertyCastNode(parentAsCollectionProperty, childComplexType)); } // parent can be null for casts on the implicit parameter; this is OK if (parent == null) { return(new SingleValueCastNode(null, childComplexType)); } SingleValueNode parentAsSingleValueNode = parent as SingleValueNode; Debug.Assert(parentAsSingleValueNode != null, "If parent of the cast node was not collection, it should be a single value."); return(new SingleValueCastNode(parentAsSingleValueNode, childComplexType)); } }