protected override TableBatchOperation PrepareNextBatchOperation(IList <T> batch, string partitionKey, out List <XTableResult> results)
{
// Search for existing entities versions
List <VersionedTableEntity> existingVersions = FindExistingVersions(batch, partitionKey);
results = new List <XTableResult>(batch.Count);
TableBatchOperation batchOperation = new TableBatchOperation();
// Add data operations
foreach (T entity in batch)
{
VersionedTableEntity existingEntity = existingVersions.FirstOrDefault(x => x.RowKey == entity.RowKey);
results.Add(new XTableResult());
// Insert entity if it doesn't exist
if (existingEntity == null)
{
batchOperation.Insert(entity);
}
else
{
entity.Version = VersionIncrementer.Increment(existingEntity.Version);
// Set current ETag
entity.ETag = existingEntity.ETag;
batchOperation.Replace(entity);
}
}
return(batchOperation);
}
protected override TableBatchOperation PrepareNextBatchOperation(IList <DynamicTableEntity> batch, string partitionKey, out List <XTableResult> results)
{
// Search for existing entities versions
List <VersionedTableEntity> existingVersions = FindExistingVersions(batch, partitionKey);
results = new List <XTableResult>(batch.Count);
TableBatchOperation batchOperation = new TableBatchOperation();
// Add data operations
for (int i = 0; i < batch.Count; ++i)
{
VersionedTableEntity existingEntity = existingVersions.FirstOrDefault(x => x.RowKey == batch[i].RowKey);
results.Add(new XTableResult());
// Insert entry if it doesn't exist
if (existingEntity == null)
{
batchOperation.Insert(batch[i]);
}
else
{
// Replace entity only if its version is higher than existing one
if (batch[i].Properties.ContainsKey(VersionColumn) && batch[i].Properties[VersionColumn].Int64Value > existingEntity.Version)
{
// Set current ETag
batch[i].ETag = existingEntity.ETag;
batchOperation.Replace(batch[i]);
}
else
{
results[i].Discarded = true;
}
}
}
return(batchOperation);
}