/// <summary>
/// Verifies that CreateResourceReader, CreateResourceSetReader, CreateDeltaResourceSetReader or CreateDeltaReader can be called.
/// </summary>
/// <param name="navigationSource">The navigation source we are going to read resources for.</param>
/// <param name="structuredType">The expected structured type for the resource/resource set to be read.</param>
private void VerifyCanCreateODataReader(IEdmNavigationSource navigationSource, IEdmStructuredType structuredType)
{
Debug.Assert(navigationSource == null || structuredType != null, "If an navigation source is specified, the structured type must be specified as well.");
// We require metadata information for reading requests.
if (!this.ReadingResponse)
{
this.VerifyUserModel();
// TODO: check for entity only
if (navigationSource == null && (structuredType != null && structuredType.IsODataEntityTypeKind()))
{
throw new ODataException(ODataErrorStrings.ODataJsonLightInputContext_NoEntitySetForRequest);
}
}
// We only check that the base type of the entity set is assignable from the specified entity type.
// If no resource set/resource type is specified in the API, we will read it from the context URI.
IEdmEntityType entitySetElementType = this.EdmTypeResolver.GetElementType(navigationSource);
if (navigationSource != null && structuredType != null && !structuredType.IsOrInheritsFrom(entitySetElementType))
{
throw new ODataException(ODataErrorStrings.ODataJsonLightInputContext_EntityTypeMustBeCompatibleWithEntitySetBaseType(structuredType.FullTypeName(), entitySetElementType.FullName(), navigationSource.FullNavigationSourceName()));
}
}
/// <summary>
/// Verifies that CreateEntryReader or CreateFeedReader or CreateDeltaReader can be called.
/// </summary>
/// <param name="navigationSource">The navigation source we are going to read entities for.</param>
/// <param name="entityType">The expected entity type for the entry/entries to be read.</param>
private void VerifyCanCreateODataReader(IEdmNavigationSource navigationSource, IEdmEntityType entityType)
{
Debug.Assert(navigationSource == null || entityType != null, "If an navigation source is specified, the entity type must be specified as well.");
// We require metadata information for reading requests.
if (!this.ReadingResponse)
{
this.VerifyUserModel();
if (navigationSource == null)
{
throw new ODataException(ODataErrorStrings.ODataJsonLightInputContext_NoEntitySetForRequest);
}
}
// We only check that the base type of the entity set is assignable from the specified entity type.
// If no entity set/entity type is specified in the API, we will read it from the context URI.
IEdmEntityType entitySetElementType = this.EdmTypeResolver.GetElementType(navigationSource);
if (navigationSource != null && entityType != null && !entityType.IsOrInheritsFrom(entitySetElementType))
{
throw new ODataException(ODataErrorStrings.ODataJsonLightInputContext_EntityTypeMustBeCompatibleWithEntitySetBaseType(entityType.FullName(), entitySetElementType.FullName(), navigationSource.FullNavigationSourceName()));
}
}
