/// <summary>Reads the values of multiple entries in the map</summary>
/// <param name="trans">Transaction used for the operation</param>
/// <param name="ids">List of the keys to read</param>
/// <returns>Array of results, in the same order as specified in <paramref name="ids"/>.</returns>
public async Task <TValue[]> GetValuesAsync([NotNull] IFdbReadOnlyTransaction trans, [NotNull] IEnumerable <TKey> ids)
{
if (trans == null)
{
throw new ArgumentNullException(nameof(trans));
}
if (ids == null)
{
throw new ArgumentNullException(nameof(ids));
}
var kv = await trans.GetValuesAsync(ids.Select(id => this.Subspace.Keys[id])).ConfigureAwait(false);
if (kv.Length == 0)
{
return(Array.Empty <TValue>());
}
var result = new TValue[kv.Length];
var decoder = this.ValueEncoder;
for (int i = 0; i < kv.Length; i++)
{
result[i] = decoder.DecodeValue(kv[i]);
}
return(result);
}
/// <summary>Return one or more fields of an hashset</summary>
/// <param name="trans">Transaction that will be used for this request</param>
/// <param name="id">Unique identifier of the hashset</param>
/// <param name="fields">List of the fields to read</param>
/// <returns>Dictionary containing the values of the selected fields, or <see cref="Slice.Empty"/> if that particular field does not exist.</returns>
public async Task <IDictionary <string, Slice> > GetAsync(IFdbReadOnlyTransaction trans, IVarTuple id, params string[] fields)
{
if (trans == null)
{
throw new ArgumentNullException(nameof(trans));
}
if (id == null)
{
throw new ArgumentNullException(nameof(id));
}
if (fields == null)
{
throw new ArgumentNullException(nameof(fields));
}
var keys = TuPack.EncodePrefixedKeys(GetKey(id), fields);
var values = await trans.GetValuesAsync(keys).ConfigureAwait(false);
Contract.Debug.Assert(values != null && values.Length == fields.Length);
var results = new Dictionary <string, Slice>(values.Length, StringComparer.OrdinalIgnoreCase);
for (int i = 0; i < fields.Length; i++)
{
results[fields[i]] = values[i];
}
return(results);
}
/// <summary>Return one or more fields of an hashset</summary>
/// <param name="trans">Transaction that will be used for this request</param>
/// <param name="id">Unique identifier of the hashset</param>
/// <param name="fields">List of the fields to read</param>
/// <returns>Dictionary containing the values of the selected fields, or Slice.Empty if that particular field does not exist.</returns>
public async Task <IDictionary <string, Slice> > GetAsync(IFdbReadOnlyTransaction trans, IFdbTuple id, string[] fields)
{
if (trans == null)
{
throw new ArgumentNullException("trans");
}
if (id == null)
{
throw new ArgumentNullException("id");
}
if (fields == null)
{
throw new ArgumentNullException("fields");
}
var keys = FdbTuple.PackRange(GetKey(id), fields);
var values = await trans.GetValuesAsync(keys).ConfigureAwait(false);
Contract.Assert(values != null && values.Length == fields.Length);
var results = new Dictionary <string, Slice>(values.Length, StringComparer.OrdinalIgnoreCase);
for (int i = 0; i < fields.Length; i++)
{
results[fields[i]] = values[i];
}
return(results);
}
/// <summary>Reads the values of multiple entries in the map</summary>
/// <param name="trans">Transaction used for the operation</param>
/// <param name="ids">List of the keys to read</param>
/// <returns>Array of results, in the same order as specified in <paramref name="ids"/>.</returns>
public async Task <Optional <TValue>[]> GetValuesAsync([NotNull] IFdbReadOnlyTransaction trans, [NotNull] IEnumerable <TKey> ids)
{
if (trans == null)
{
throw new ArgumentNullException("trans");
}
if (ids == null)
{
throw new ArgumentNullException("ids");
}
var results = await trans.GetValuesAsync(this.Location.Keys.Encode(ids)).ConfigureAwait(false);
return(Optional.DecodeRange(this.ValueEncoder, results));
}
public virtual Task <Slice[]> GetValuesAsync(Slice[] keys)
{
return(m_transaction.GetValuesAsync(keys));
}
public Task <Slice[]> GetValuesAsync([NotNull] IFdbReadOnlyTransaction trans, [NotNull] IEnumerable <T> keys)
{
return(trans.GetValuesAsync(EncodeKeyRange(keys)));
}
/// <summary>Return one or more fields of an hashset</summary>
/// <param name="trans">Transaction that will be used for this request</param>
/// <param name="id">Unique identifier of the hashset</param>
/// <param name="fields">List of the fields to read</param>
/// <returns>Dictionary containing the values of the selected fields, or Slice.Empty if that particular field does not exist.</returns>
public async Task<IDictionary<string, Slice>> GetAsync(IFdbReadOnlyTransaction trans, IFdbTuple id, string[] fields)
{
if (trans == null) throw new ArgumentNullException("trans");
if (id == null) throw new ArgumentNullException("id");
if (fields == null) throw new ArgumentNullException("fields");
var keys = FdbTuple.PackRange(GetKey(id), fields);
var values = await trans.GetValuesAsync(keys).ConfigureAwait(false);
Contract.Assert(values != null && values.Length == fields.Length);
var results = new Dictionary<string, Slice>(values.Length, StringComparer.OrdinalIgnoreCase);
for (int i = 0; i < fields.Length; i++)
{
results[fields[i]] = values[i];
}
return results;
}
