/// <summary>
/// Constructs a new page head. The page head handles page locks and versions
/// </summary>
/// <param name="pageNumber">The page number of the page</param>
/// <param name="page">The current version of the page from storage</param>
public PageHead(ulong pageNumber, IPage page)
{
PageNumber = pageNumber;
Versions = new OwinContainers.LinkedList <PageVersion>();
var pageVersion = new PageVersion(0, page);
pageVersion.Added(this, Versions.Append(pageVersion));
}
/// <summary>
/// Constructs a new head for the linked list of page versions that
/// have the same version number
/// </summary>
/// <param name="versionNumber">The version number of the database</param>
public VersionHead(ulong versionNumber)
{
VersionNumber = versionNumber;
_pageVersions = new OwinContainers.LinkedList <PageVersion>();
}
