/// <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"));
}
return(SelectExpandSemanticBinder.Parse((IEdmEntityType)((IEdmCollectionTypeReference)path.EdmType()).ElementType().Definition, path.EntitySet(), 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="elementType">Type that the select and expand clauses are projecting.</param>
/// <param name="entitySet">EntitySet that the elements being filtered are from.</param>
/// <returns>A <see cref="SelectExpandClause"/> representing the metadata bound orderby expression.</returns>
private SelectExpandClause ParseSelectAndExpandImplementation(string select, string expand, IEdmEntityType elementType, IEdmEntitySet entitySet)
{
DebugUtils.CheckNoExternalCallers();
ExceptionUtils.CheckArgumentNotNull(this.configuration.Model, "model");
ExceptionUtils.CheckArgumentNotNull(elementType, "elementType");
ISelectExpandTermParser selectParser = SelectExpandTermParserFactory.Create(select, this.Settings);
SelectToken selectToken = selectParser.ParseSelect();
ISelectExpandTermParser expandParser = SelectExpandTermParserFactory.Create(expand, this.Settings);
ExpandToken expandToken = expandParser.ParseExpand();
return(SelectExpandSemanticBinder.Parse(elementType, entitySet, expandToken, selectToken, this.configuration));
}
