private IEnumerable <SitemapIndexNode> CreateIndexNode <T>(ISitemapConfiguration <T> configuration, int pageCount)
{
for (int page = 1; page <= pageCount; page++)
{
string url = configuration.CreateSitemapUrl(page);
SitemapIndexNode indexNode = new SitemapIndexNode {
Url = url
};
yield return(indexNode);
}
}
/// <summary>
/// Creates a sitemap from a LINQ data source and handles the paging.
/// </summary>
/// <typeparam name="T">Source item type</typeparam>
/// <param name="httpContext">ASP.NET HTTP context.</param>
/// <param name="nodes">Data source for creating nodes.</param>
/// <param name="configuration">Sitemap configuration for index files.</param>
public ActionResult CreateSitemap <T>(HttpContextBase httpContext, IQueryable <T> nodes, ISitemapConfiguration <T> configuration)
{
if (httpContext == null)
{
throw new ArgumentNullException(nameof(httpContext));
}
if (configuration == null)
{
throw new ArgumentNullException(nameof(configuration));
}
int nodeCount = nodes.Count();
if (configuration.Size >= nodeCount)
{
return(CreateSitemapInternal(httpContext, nodes.ToList().Select(configuration.CreateNode).ToList()));
}
if (configuration.CurrentPage.HasValue && configuration.CurrentPage.Value > 0)
{
int skipCount = (configuration.CurrentPage.Value - 1) * configuration.Size;
List <SitemapNode> pageNodes = nodes.Skip(skipCount).Take(configuration.Size).ToList().Select(configuration.CreateNode).ToList();
return(CreateSitemapInternal(httpContext, pageNodes));
}
int pageCount = (int)Math.Ceiling((double)nodeCount / configuration.Size);
var indexNodes = CreateIndexNode(configuration, pageCount);
return(_sitemapActionResultFactory.CreateSitemapResult(httpContext, new SitemapIndexModel(indexNodes)));
}
public SitemapBuilderBase(ISitemapConfiguration config)
{
_config = config;
}
