/// <summary>
/// Initializes a new instance of the <see cref="EntityChangeMonitor{TEntity, TDbContext}" /> class.
/// </summary>
/// <param name="query">The query.</param>
/// <param name="timeout">The timeout.</param>
public EntityChangeMonitor(Expression <Func <TEntity, bool> > query, TimeSpan?timeout)
{
_context = new TDbContext();
_query = query;
_uniqueId = Guid.NewGuid().ToString();
_changeNotifier = new EntityChangeNotifier <TEntity, TDbContext>(_query, timeout);
_changeNotifier.Error += _changeNotifier_Error;
_changeNotifier.Changed += _changeNotifier_Changed;
InitializationComplete();
}
/// <summary>
/// Releases all managed and unmanaged resources and any references to the <see cref="T:System.Runtime.Caching.ChangeMonitor" /> instance. This overload must be implemented by derived change-monitor classes.
/// </summary>
/// <param name="disposing">true to release managed and unmanaged resources and any references to a <see cref="T:System.Runtime.Caching.ChangeMonitor" /> instance; false to release only unmanaged resources. When false is passed, the <see cref="M:System.Runtime.Caching.ChangeMonitor.Dispose(System.Boolean)" /> method is called by a finalizer thread and any external managed references are likely no longer valid because they have already been garbage collected.</param>
protected override void Dispose(bool disposing)
{
if (disposing)
{
_query = null;
if (_changeNotifier != null)
{
_changeNotifier.Error -= _changeNotifier_Error;
_changeNotifier.Changed -= _changeNotifier_Changed;
_changeNotifier.Dispose();
_changeNotifier = null;
}
_context.Dispose();
_context = null;
}
}
