/// <summary>
/// Create a new object representing a binary large object (blob).
/// Only keys within the subspace will be used by the object.
/// Other clients of the database should refrain from modifying the subspace.</summary>
/// <param name="location">Subspace to be used for storing the blob data and metadata</param>
public FdbBlob(ISubspaceLocation location)
{
if (location == null)
{
throw new ArgumentNullException(nameof(location));
}
this.Location = location.AsDynamic();
}
// from https://apple.github.io/foundationdb/vector.html
// Vector stores each of its values using its index as the key.
// The size of a vector is equal to the index of its last key + 1.
//
// For indexes smaller than the vector's size that have no associated key
// in the database, the value will be the specified defaultValue.
//
// If the last value in the vector has the default value, its key will
// always be set so that size can be determined.
//
// By creating Vector with a Subspace, all kv pairs modified by the
// layer will have keys that start within that Subspace.
// Implementation note:
// - vector.py uses Thread Local Storage that does not work well with async and Tasks in .NET
// so we wont be able to 'store' the current transaction in the vector object itself
/// <summary>Create a new sparse Vector</summary>
/// <param name="location">Subspace where the vector will be stored</param>
/// <param name="defaultValue">Default value for sparse entries</param>
/// <param name="encoder">Encoder used for the values of this vector</param>
public FdbVector(ISubspaceLocation location, T defaultValue = default, IValueEncoder <T>?encoder = null)
: this(location.AsDynamic(), defaultValue, encoder)
{
}
private const int LEVEL_FAN_POW = 4; // 2^X per level
public FdbRankedSet(ISubspaceLocation location)
: this(location?.AsDynamic())
{
}
/// <summary>Create a new High Contention counter.</summary>
/// <param name="location">Subspace to be used for storing the counter</param>
public FdbHighContentionCounter(ISubspaceLocation location)
: this(location.AsDynamic(), TuPack.Encoding.GetValueEncoder <long>())
{
}
