/// <summary>
/// Creates the URI for a batch request operation.
/// </summary>
/// <param name="uri">The uri to process.</param>
/// <param name="baseUri">The base Uri to use.</param>
/// <param name="urlResolver">An optional custom URL resolver to resolve URLs for writing them into the payload.</param>
/// <returns>An URI to be used in the request line of a batch request operation. It uses the <paramref name="urlResolver"/>
/// first and falls back to the defaullt URI building schema if the no URL resolver is specified or the URL resolver
/// returns null. In the default scheme, the method either returns the specified <paramref name="uri"/> if it was absolute,
/// or it's combination with the <paramref name="baseUri"/> if it was relative.</returns>
/// <remarks>
/// This method will fail if no custom resolution is implemented and the specified <paramref name="uri"/> is
/// relative and there's no base URI available.
/// </remarks>
internal static Uri CreateOperationRequestUri(Uri uri, Uri baseUri, IODataUrlResolver urlResolver)
{
DebugUtils.CheckNoExternalCallers();
Debug.Assert(uri != null, "uri != null");
Uri resultUri;
if (urlResolver != null)
{
// The resolver returns 'null' if no custom resolution is desired.
resultUri = urlResolver.ResolveUrl(baseUri, uri);
if (resultUri != null)
{
return(resultUri);
}
}
if (uri.IsAbsoluteUri)
{
resultUri = uri;
}
else
{
if (baseUri == null)
{
string errorMessage = UriUtilsCommon.UriToString(uri).StartsWith("$", StringComparison.Ordinal)
? Strings.ODataBatchUtils_RelativeUriStartingWithDollarUsedWithoutBaseUriSpecified(UriUtilsCommon.UriToString(uri))
: Strings.ODataBatchUtils_RelativeUriUsedWithoutBaseUriSpecified(UriUtilsCommon.UriToString(uri));
throw new ODataException(errorMessage);
}
resultUri = UriUtils.UriToAbsoluteUri(baseUri, uri);
}
return(resultUri);
}
