public override Void Execute()
{
if (Mutations.Count() == 0)
{
return(new Void());
}
var mutationMap = new Dictionary <byte[], Dictionary <string, List <Mutation> > >();
foreach (var key in Mutations.GroupBy(x => x.Column.Family.Key))
{
var keyMutations = new Dictionary <string, List <Mutation> >();
foreach (var columnFamily in key.GroupBy(x => x.Column.Family.FamilyName))
{
var columnFamilyMutations = columnFamily
.Where(m => m.Type == MutationType.Added || m.Type == MutationType.Changed)
.Select(m => Helper.CreateInsertedOrChangedMutation(m))
.ToList();
var superColumnsNeedingDeleted = columnFamily
.Where(m => m.Type == MutationType.Removed && m.Column.GetParent().SuperColumn != null);
foreach (var superColumn in superColumnsNeedingDeleted.GroupBy(x => x.Column.GetParent().SuperColumn.ColumnName))
{
columnFamilyMutations.AddRange(Helper.CreateDeletedSuperColumnMutation(superColumn));
}
var columnsNeedingDeleted = columnFamily
.Where(m => m.Type == MutationType.Removed && m.Column.GetParent().SuperColumn == null);
if (columnsNeedingDeleted.Count() > 0)
{
columnFamilyMutations.AddRange(Helper.CreateDeletedColumnMutation(columnsNeedingDeleted));
}
keyMutations.Add(columnFamily.Key, columnFamilyMutations);
}
mutationMap.Add(key.Key.TryToBigEndian(), keyMutations);
}
var client = Session.GetClient();
if (Atomic && client.describe_version() >= RpcApiVersion.Cassandra120)
{
client.atomic_batch_mutate(
mutationMap,
Session.WriteConsistency);
}
else
{
client.batch_mutate(
mutationMap,
Session.WriteConsistency);
}
return(new Void());
}