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//-----------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------------------------
namespace System.Activities.Persistence
{
using System;
using System.Collections.Generic;
using System.Runtime;
using System.Transactions;
using System.Xml.Linq;
public abstract class PersistenceIOParticipant : PersistenceParticipant
{
protected PersistenceIOParticipant(bool isSaveTransactionRequired, bool isLoadTransactionRequired)
: base(isSaveTransactionRequired, isLoadTransactionRequired)
{
}
// Passed-in dictionaries are read-only.
[Fx.Tag.Throws.Timeout("The operation could not be completed before the timeout. The transaction should be rolled back and the pipeline aborted.")]
[Fx.Tag.Throws(typeof(OperationCanceledException), "The operation has been aborted. The transaction should be rolled back and the pipeline aborted.")]
[Fx.Tag.Throws(typeof(TransactionException), "The transaction associated with the operation has failed. The pipeline should be aborted.")]
protected virtual IAsyncResult BeginOnSave(IDictionary<XName, object> readWriteValues, IDictionary<XName, object> writeOnlyValues, TimeSpan timeout, AsyncCallback callback, object state)
{
return new CompletedAsyncResult(callback, state);
}
[Fx.Tag.InheritThrows(From = "BeginOnSave")]
protected virtual void EndOnSave(IAsyncResult result)
{
CompletedAsyncResult.End(result);
}
// Passed-in dictionary is read-only.
[Fx.Tag.InheritThrows(From = "BeginOnSave")]
protected virtual IAsyncResult BeginOnLoad(IDictionary<XName, object> readWriteValues, TimeSpan timeout, AsyncCallback callback, object state)
{
return new CompletedAsyncResult(callback, state);
}
[Fx.Tag.InheritThrows(From = "BeginOnLoad")]
protected virtual void EndOnLoad(IAsyncResult result)
{
CompletedAsyncResult.End(result);
}
protected abstract void Abort();
internal override IAsyncResult InternalBeginOnSave(IDictionary<XName, object> readWriteValues, IDictionary<XName, object> writeOnlyValues, TimeSpan timeout, AsyncCallback callback, object state)
{
return BeginOnSave(readWriteValues, writeOnlyValues, timeout, callback, state);
}
internal override void InternalEndOnSave(IAsyncResult result)
{
EndOnSave(result);
}
internal override IAsyncResult InternalBeginOnLoad(IDictionary<XName, object> readWriteValues, TimeSpan timeout, AsyncCallback callback, object state)
{
return BeginOnLoad(readWriteValues, timeout, callback, state);
}
internal override void InternalEndOnLoad(IAsyncResult result)
{
EndOnLoad(result);
}
internal override void InternalAbort()
{
Abort();
}
}
}
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