/// <summary>
/// Applies the operation to the journal.
/// </summary>
/// <param name="table">The journal.</param>
public override object Apply(PersistentTable <TKey, TValue> table)
{
TValue value;
var result = table.TryGetValue(this.Key, out value);
return(new ConditionalResult <TValue>(result, value));
}
/// <summary>
/// The get next async.
/// </summary>
/// <param name="cancellationToken">
/// The cancellation token.
/// </param>
/// <returns>
/// The <see cref="Task"/>.
/// </returns>
public Task <OperationData> GetNextAsync(CancellationToken cancellationToken)
{
if (this.values.MoveNext())
{
var element = this.values.Current;
var data =
new OperationData(new SetOperation {
Key = element.Key, Value = element.Value
}.Serialize());
return(Task.FromResult(data));
}
if (this.table == null)
{
return(Task.FromResult(default(OperationData)));
}
this.pool.Return(this.table);
this.table = null;
return(Task.FromResult(default(OperationData)));
}
/// <summary>
/// Initializes a new instance of the <see cref="CopyStream"/> class.
/// </summary>
/// <param name="pool">
/// The table pool.
/// </param>
public CopyStream(PersistentTablePool <TKey, TValue> pool)
{
this.pool = pool;
this.table = pool.Take();
this.values = this.table.GetRange().GetEnumerator();
}
/// <summary>
/// Applies the operation to the journal.
/// </summary>
/// <param name="table">The journal.</param>
public override object Apply(PersistentTable <TKey, TValue> table)
{
return(null);
}
/// <summary>
/// Applies the operation to the journal.
/// </summary>
/// <param name="table">The journal.</param>
public override object Apply(PersistentTable <TKey, TValue> table)
{
TValue value;
return(table.TryRemove(this.Key, out value));
}
/// <summary>
/// Applies the operation to the table.
/// </summary>
/// <param name="table">The table.</param>
public override object Apply(PersistentTable <TKey, TValue> table)
{
table.AddOrUpdate(this.Key, this.Value);
return(null);
}
/// <summary> /// Applies the operation to the table. /// </summary> /// <param name="table">The table.</param> /// <returns>The result of applying the operation.</returns> public abstract object Apply(PersistentTable <TKey, TValue> table);
