public void deleting_a_value_from_a_path()
{
var subject = new ReverseTrie <SerialGuid>();
var val1 = SerialGuid.Wrap(Guid.NewGuid());
var val2 = SerialGuid.Wrap(Guid.NewGuid());
subject.Add("Deleted: no", val1);
subject.Add("Deleted: yes", val2);
subject.Delete("Deleted: yes");
subject.Delete("Not present"); // ok to try non-paths
// Get
Assert.That(subject.Get("Deleted: no"), Is.EqualTo(val1), "Failed to find data to a known path");
Assert.That(subject.Get("Deleted: yes"), Is.Null, "Should have been removed, but it's still there");
// Search
var all = string.Join(",", subject.Search("Deleted"));
Assert.That(all, Is.EqualTo("Deleted: no"));
// Look-up
Assert.That(subject.GetPathsForEntry(val2), Is.Empty, "Value cache was not updated");
Assert.That(subject.GetPathsForEntry(val1), Is.Not.Empty, "Value cache was destroyed?");
}
/// <summary>
/// Remove a path binding if it exists. If the path is not bound, nothing happens.
/// Linked documents are not removed.
/// </summary>
public void UnbindPath(string exactPath)
{
_pathLookupCache = null;
lock (_fslock)
{
var pathLink = GetPathLookupLink();
var pathIndex = new ReverseTrie <SerialGuid>();
if (!pathLink.TryGetLink(0, out var pathPageId))
{
return;
}
pathIndex.Defrost(GetStream(pathPageId));
// Unbind the path
pathIndex.Delete(exactPath);
// Write back to new chain
var newPageId = WriteStream(pathIndex.Freeze());
// Update version link
pathLink.WriteNewLink(newPageId, out var expired);
SetPathLookupLink(pathLink);
ReleaseChain(expired);
Flush();
}
}