/// <summary>
/// Checks whether a relative path is of URI-2
/// </summary>
/// <param name="path">The relative path</param>
/// <param name="meta">The metadata document</param>
/// <returns>Returns true if it is a URI-2; false otherwise</returns>
public static bool IsURI2(string path, XElement meta)
{
bool result = false;
if (!string.IsNullOrEmpty(path))
{
int posLP = path.IndexOf('(');
if (posLP > 0)
{
int posRP = path.LastIndexOf(')');
if (posRP > posLP)
{
string esPath = path.Substring(0, posLP);
string keyPredicat = path.Substring(posLP + 1, posRP - posLP - 1).Trim();
// check it is a real URI2 or not based on metadata document
string xpath = string.Format("//*[local-name()='EntitySet' and @Name='{0}']", esPath);
bool isEntitySet = meta.XPathSelectElement(xpath) != null;
if (isEntitySet)
{
result = RegexInUri.IsKeyPredicate(keyPredicat);
}
}
}
}
return(result);
}
/// <summary>
/// Checks whether the input string is a key predicate
/// </summary>
/// <param name="input">The input string</param>
/// <returns>Returns true if input is of a key predicate; false otherwise</returns>
public static bool IsKeyPredicate(string input)
{
return(RegexInUri.IsSingleKeyPredicate(input) || RegexInUri.IsComplexKeyPredicate(input));
}
