/// <summary>
/// Bind a select and expand option.
/// </summary>
/// <param name="syntax">A syntax tree containing the select and expand options to bind</param>
/// <param name="path">the top level path</param>
/// <param name="configuration">The configuration to use for binding.</param>
/// <returns>a select expand clause bound to metadata</returns>
public static SelectExpandClause BindSelectExpand(SyntacticTree syntax, ODataPath path, ODataUriParserConfiguration configuration)
{
if (syntax.Select != null || syntax.Expand != null)
{
if (!path.EdmType().IsEntityCollection() && !path.EdmType().IsEntity())
{
throw new ODataException(ODataErrorStrings.MetadataBinder_QueryOptionNotApplicable("$select or $expand"));
}
SelectExpandSemanticBinder semanticBinder = new SelectExpandSemanticBinder();
return(semanticBinder.Bind((IEdmEntityType)((IEdmCollectionTypeReference)path.EdmType()).ElementType().Definition, path.NavigationSource(), syntax.Expand, syntax.Select, configuration));
}
return(null);
}
/// <summary>
/// Parses the <paramref name="select"/> and <paramref name="expand"/> clauses on the given <paramref name="elementType"/>, binding
/// the text into a metadata-bound list of properties to be selected using the provided model.
/// </summary>
/// <param name="select">String representation of the select expression from the URI.</param>
/// <param name="expand">String representation of the expand expression from the URI.</param>
/// <param name="configuration">The configuration used for binding.</param>
/// <param name="elementType">Type that the select and expand clauses are projecting.</param>
/// <param name="navigationSource">Navigation source that the elements being filtered are from.</param>
/// <returns>A <see cref="SelectExpandClause"/> representing the metadata bound select and expand expression.</returns>
private static SelectExpandClause ParseSelectAndExpandImplementation(string select, string expand, ODataUriParserConfiguration configuration, IEdmStructuredType elementType, IEdmNavigationSource navigationSource)
{
ExceptionUtils.CheckArgumentNotNull(configuration, "configuration");
ExceptionUtils.CheckArgumentNotNull(configuration.Model, "model");
ExceptionUtils.CheckArgumentNotNull(elementType, "elementType");
ExpandToken expandTree;
SelectToken selectTree;
// syntactic pass , pass in the expand parent entity type name, in case expand option contains star, will get all the parent entity navigation properties (both declared and dynamical).
SelectExpandSyntacticParser.Parse(select, expand, elementType, configuration, out expandTree, out selectTree);
// semantic pass
SelectExpandSemanticBinder binder = new SelectExpandSemanticBinder();
return binder.Bind(elementType, navigationSource, expandTree, selectTree, configuration);
}
/// <summary>
/// Parses the <paramref name="select"/> and <paramref name="expand"/> clauses on the given <paramref name="elementType"/>, binding
/// the text into a metadata-bound list of properties to be selected using the provided model.
/// </summary>
/// <param name="select">String representation of the select expression from the URI.</param>
/// <param name="expand">String representation of the expand expression from the URI.</param>
/// <param name="configuration">The configuration used for binding.</param>
/// <param name="elementType">Type that the select and expand clauses are projecting.</param>
/// <param name="navigationSource">Navigation source that the elements being filtered are from.</param>
/// <returns>A <see cref="SelectExpandClause"/> representing the metadata bound select and expand expression.</returns>
private static SelectExpandClause ParseSelectAndExpandImplementation(string select, string expand, ODataUriParserConfiguration configuration, IEdmStructuredType elementType, IEdmNavigationSource navigationSource)
{
ExceptionUtils.CheckArgumentNotNull(configuration, "configuration");
ExceptionUtils.CheckArgumentNotNull(configuration.Model, "model");
ExceptionUtils.CheckArgumentNotNull(elementType, "elementType");
ExpandToken expandTree;
SelectToken selectTree;
// syntactic pass
SelectExpandSyntacticParser.Parse(select, expand, configuration, out expandTree, out selectTree);
// semantic pass
SelectExpandSemanticBinder binder = new SelectExpandSemanticBinder();
return binder.Bind(elementType, navigationSource, expandTree, selectTree, configuration);
}
