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NullPersistence.cs
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NullPersistence.cs
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using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
namespace NStore.Core.Persistence
{
public class NullPersistence : IPersistence
{
public Task<IChunk> ReplaceOneAsync(long position, string partitionId, long index, object payload,
string operationId,
CancellationToken cancellationToken)
{
return Task.FromResult<IChunk>(null);
}
public Task<IChunk> ReadOneAsync(long position, CancellationToken cancellationToken)
{
return Task.FromResult<IChunk>(null);
}
public Task DeleteAsync(
string partitionId,
long fromLowerIndexInclusive,
long toUpperIndexInclusive,
CancellationToken cancellationToken)
{
return Task.CompletedTask;
}
public Task<IChunk> ReadByOperationIdAsync(string partitionId, string operationId, CancellationToken cancellationToken)
{
return Task.FromResult<IChunk>(null);
}
public Task ReadAllByOperationIdAsync(string operationId, ISubscription subscription, CancellationToken cancellationToken)
{
return Task.CompletedTask;
}
public Task<long> ReadLastPositionAsync(CancellationToken cancellationToken)
{
return Task.FromResult(0L);
}
public Task<IChunk> AppendAsync(string partitionId, long index, object payload, string operationId, CancellationToken cancellationToken)
{
return Task.FromResult<IChunk>(null);
}
public bool SupportsFillers => false;
public Task ReadForwardAsync(
string partitionId,
long fromLowerIndexInclusive,
ISubscription subscription,
long toUpperIndexInclusive,
int limit,
CancellationToken cancellationToken
)
{
return Task.CompletedTask;
}
public Task ReadForwardMultiplePartitionsByGlobalPositionAsync(
IEnumerable<string> partitionIdsList,
long fromLowerPositionInclusive,
ISubscription subscription,
long toUpperPositionInclusive,
CancellationToken cancellationToken)
{
return Task.CompletedTask;
}
public Task ReadBackwardAsync(
string partitionId,
long fromUpperIndexInclusive,
ISubscription subscription,
long toLowerIndexInclusive,
int limit,
CancellationToken cancellationToken)
{
return Task.CompletedTask;
}
public Task<IChunk> ReadSingleBackwardAsync(string partitionId, long fromUpperIndexInclusive, CancellationToken cancellationToken)
{
return Task.FromResult<IChunk>(null);
}
public Task ReadAllAsync(long fromPositionInclusive, ISubscription subscription, int limit, CancellationToken cancellationToken)
{
return Task.CompletedTask;
}
}
}