/// <summary>
/// Finds the system segment with the given endpoint, if one exists
/// </summary>
/// <param name="endpoint">The endpoint name</param>
/// <param name="segment">The segment, if one exists</param>
/// <returns>True if a segment is found, otherwise false</returns>
public static bool TryGet(string endpoint, out SystemSegment segment)
{
return(systemSegmentInstances.TryGetValue(endpoint, out segment));
}
/// <summary>
/// Parses a collection of segment paths using the format expected for the '$expand' and '$select' query options
/// </summary>
/// <param name="type">The entity type the paths start from</param>
/// <param name="toParse">The string to parse</param>
/// <returns>The parsed collection of segment paths</returns>
public static ODataUriSegmentPathCollection ParseSegmentPathCollection(EntityType type, string toParse)
{
ExceptionUtilities.CheckArgumentNotNull(toParse, "toParse");
ODataUriSegmentPathCollection segmentPathCollection = new ODataUriSegmentPathCollection();
foreach (string path in toParse.Trim().Split(','))
{
IList <ODataUriSegment> segmentPath = new List <ODataUriSegment>();
IEnumerable <MemberProperty> possibleProperties = type.AllProperties;
IEnumerable <NavigationProperty> possibleNavigations = type.AllNavigationProperties;
foreach (string segment in path.Trim().Split('/'))
{
EntityType matchingType;
if (TryGetEntityTypeInHierarchy(type, segment, out matchingType))
{
segmentPath.Add(new EntityTypeSegment(matchingType));
continue;
}
MemberProperty property = null;
if (possibleProperties != null)
{
property = possibleProperties.SingleOrDefault(p => p.Name == segment);
}
NavigationProperty navigation = null;
if (possibleNavigations != null)
{
navigation = possibleNavigations.SingleOrDefault(p => p.Name == segment);
}
if (property == null && navigation == null)
{
possibleProperties = null;
SystemSegment systemSegment;
if (SystemSegment.TryGet(segment, out systemSegment))
{
segmentPath.Add(systemSegment);
}
else
{
segmentPath.Add(new UnrecognizedSegment(segment));
}
}
else if (property != null)
{
possibleNavigations = null;
ComplexDataType complexType = property.PropertyType as ComplexDataType;
if (complexType != null)
{
possibleProperties = complexType.Definition.Properties;
}
else
{
possibleProperties = null;
possibleNavigations = null;
}
segmentPath.Add(new PropertySegment(property));
}
else
{
possibleProperties = navigation.ToAssociationEnd.EntityType.AllProperties;
possibleNavigations = navigation.ToAssociationEnd.EntityType.AllNavigationProperties;
segmentPath.Add(new NavigationSegment(navigation));
}
}
segmentPathCollection.Add(segmentPath);
}
return(segmentPathCollection);
}
/// <summary>
/// Finds the system segment with the given endpoint, if one exists
/// </summary>
/// <param name="endpoint">The endpoint name</param>
/// <param name="segment">The segment, if one exists</param>
/// <returns>True if a segment is found, otherwise false</returns>
public static bool TryGet(string endpoint, out SystemSegment segment)
{
return systemSegmentInstances.TryGetValue(endpoint, out segment);
}