//---------------------------------------------------------------------
// Instance members
/// <summary>
/// Constructor.
/// </summary>
/// <param name="database">The underlying <see cref="Lite.Database"/>.</param>
/// <exception cref="InvalidOperationException">Thrown if the <paramref name="database"/> has already been associated with another entity database instance.</exception>
private EntityDatabase(Database database)
{
Covenant.Requires <ArgumentNullException>(database != null);
this.Base = database;
nameToDatabase.Add(database.Name, this);
WeakEventController.AddHandler <Database, DatabaseChangeEventArgs>(database, nameof(Base.Changed), OnDatabaseChanged);
// Initialize the temporary database folder. This will located in the
// same location as the Couchbase Lite database folder and will be
// called [NAME.tmp] where NAME is the Couchbase Lite database name.
//
// Note that we're going to purge any existing files in the database
// to ensure that orphaned attachments don't accumulate.
// $hack(jeff.lill):
//
// This relies on [Database.ToString()] embedding the database folder
// path like:
//
// "Database[C:\Users\jeff\AppData\Local\Temp\c840daac-9a1a-4b80-90ae-d903e9a0d090\test.cblite2]"
//
// and also that the attachment blobs are stored in the [attachments] subdirectory.
var dbString = database.ToString();
var posStart = dbString.IndexOf('[') + 1;
var posEnd = dbString.LastIndexOfAny(new char[] { '/', '\\' });
var folder = dbString.Substring(posStart, posEnd - posStart);
BlobFolderPath = Path.Combine(dbString.Substring(posStart, dbString.Length - posStart - 1), "attachments");
if (!Directory.Exists(BlobFolderPath))
{
throw new NotImplementedException(NotCompatibleError);
}
TempFolderPath = Path.Combine(folder, $"{database.Name}.tmp");
if (Directory.Exists(TempFolderPath))
{
Directory.Delete(TempFolderPath, true);
}
Directory.CreateDirectory(TempFolderPath);
}
//---------------------------------------------------------------------
// IDispose implementation
/// <inheritdoc/>
public void Dispose()
{
if (Base == null)
{
return;
}
var name = Base.Name;
WeakEventController.RemoveHandler <Database, DatabaseChangeEventArgs>(Base, nameof(Base.Changed), OnDatabaseChanged);
Base.Dispose();
Base = null;
lock (syncRoot)
{
nameToDatabase.Remove(name);
}
}
public void RemoveListener(EventSource source)
{
WeakEventController.RemoveHandler <EventSource, EventArgs>(source, nameof(EventSource.Event), OnEvent);
}