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using System;
using System.Collections.Generic;
using System.Linq;
using FluentCassandra.Types;
namespace FluentCassandra.Operations
{
public class MultiGetColumnFamilySlice : QueryableColumnFamilyOperation<FluentColumnFamily>
{
/*
* map<string,list<ColumnOrSuperColumn>> multiget_slice(keyspace, keys, column_parent, predicate, consistency_level)
*/
public List<CassandraObject> Keys { get; private set; }
public override IEnumerable<FluentColumnFamily> Execute()
{
var schema = ColumnFamily.GetSchema();
var parent = new CassandraColumnParent {
ColumnFamily = ColumnFamily.FamilyName
};
SlicePredicate = Helper.SetSchemaForSlicePredicate(SlicePredicate, schema);
var output = Session.GetClient().multiget_slice(
Keys,
parent,
SlicePredicate,
Session.ReadConsistency
);
foreach (var result in output)
{
var key = CassandraObject.GetCassandraObjectFromDatabaseByteArray(result.Key, schema.KeyValueType);
var r = new FluentColumnFamily(key, ColumnFamily.FamilyName, schema, result.Value.Select(col => {
return Helper.ConvertColumnToFluentColumn(col.Column, schema);
}));
ColumnFamily.Context.Attach(r);
r.MutationTracker.Clear();
yield return r;
}
}
public MultiGetColumnFamilySlice(IEnumerable<CassandraObject> keys, CassandraSlicePredicate columnSlicePredicate)
{
Keys = keys.ToList();
SlicePredicate = columnSlicePredicate;
}
}
}
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