Google Bigtable v2 API - Class BigtableVersionRange (3.10.0-beta01)

Version 3.10.0-beta01

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public class BigtableVersionRange : IEquatable<BigtableVersionRange>

Reference documentation and code samples for the Google Bigtable v2 API class BigtableVersionRange.

A contiguous range of versions.

Inheritance

object > BigtableVersionRange

Implements

IEquatableBigtableVersionRange

Inherited Members

object.GetType()

object.MemberwiseClone()

Namespace

Google.Cloud.Bigtable.V2

Assembly

Google.Cloud.Bigtable.V2.dll

Remarks

Note: version values are stored on the server as if they are microseconds since the Unix epoch. However, the server only supports millisecond granularity, so the server only allows microseconds in multiples of 1,000. BigtableVersion attempts to hide this complexity by exposing its underlying Value in terms of milliseconds, so if desired, a custom versioning scheme of 1, 2, ... can be used rather than 1000, 2000, ... However, access to the underlying microsecond value is still provided via Micros.

Note: when using ReadModifyWriteRow, modified columns automatically use a server version, which is based on the current timestamp since the Unix epoch. For those columns, other reads and writes should use BigtableVersion values constructed from DateTime values, as opposed to using a custom versioning scheme with 64-bit values.

Constructors

BigtableVersionRange(BigtableVersion?, BigtableVersion?)

public BigtableVersionRange(BigtableVersion? start, BigtableVersion? end)

Creates a new BigtableVersionRange.

Parameters
Name	Description
start	BigtableVersion Inclusive lower bound. If null, interpreted as 0.
end	BigtableVersion Exclusive upper bound. If null, interpreted as infinity.

BigtableVersionRange(DateTime?, DateTime?)

public BigtableVersionRange(DateTime? startTimestamp, DateTime? endTimestamp)

Creates a new BigtableVersionRange.

Parameters
Name	Description
startTimestamp	DateTime Inclusive lower bound timestamp whose milliseconds since the Unix epoch should be used as the version value. If null, interpreted as 0. It must be specified in UTC.
endTimestamp	DateTime Exclusive upper bound timestamp whose milliseconds since the Unix epoch should be used as the version value. If null, interpreted as infinity. It must be specified in UTC.

Remarks

Note: version values are stored on the server as if they are microseconds since the Unix epoch. However, the server only supports millisecond granularity, so the server only allows microseconds in multiples of 1,000. BigtableVersion attempts to hide this complexity by exposing its underlying Value in terms of milliseconds, so if desired, a custom versioning scheme of 1, 2, ... can be used rather than 1000, 2000, ... However, access to the underlying microsecond value is still provided via Micros.

Note: when using ReadModifyWriteRow, modified columns automatically use a server version, which is based on the current timestamp since the Unix epoch. For those columns, other reads and writes should use BigtableVersion values constructed from DateTime values, as opposed to using a custom versioning scheme with 64-bit values.

BigtableVersionRange(long?, long?)

public BigtableVersionRange(long? start, long? end)

Creates a new BigtableVersionRange.

Parameters
Name	Description
start	long Inclusive lower bound non-negative version value, or -1 to initialize from the milliseconds of DateTime.UtcNow. Must be less than or equal to 9223372036854775. If null, interpreted as 0.
end	long Exclusive upper bound non-negative version value, or -1 to initialize from the milliseconds of DateTime.UtcNow. Must be less than or equal to 9223372036854775. If null, interpreted as infinity.

Remarks

Note: version values are stored on the server as if they are microseconds since the Unix epoch. However, the server only supports millisecond granularity, so the server only allows microseconds in multiples of 1,000. BigtableVersion attempts to hide this complexity by exposing its underlying Value in terms of milliseconds, so if desired, a custom versioning scheme of 1, 2, ... can be used rather than 1000, 2000, ... However, access to the underlying microsecond value is still provided via Micros.

Note: when using ReadModifyWriteRow, modified columns automatically use a server version, which is based on the current timestamp since the Unix epoch. For those columns, other reads and writes should use BigtableVersion values constructed from DateTime values, as opposed to using a custom versioning scheme with 64-bit values.

Properties

End

public BigtableVersion? End { get; }

Gets the exclusive upper bound. If null, interpreted as infinity.

Property Value
Type	Description
BigtableVersion

Start

public BigtableVersion? Start { get; }

Gets the inclusive lower bound. If null, interpreted as 0.

Property Value
Type	Description
BigtableVersion

Methods

GetHashCode()

public override int GetHashCode()

Serves as the default hash function.

Returns
Type	Description
int	A hash code for the current object.

Overrides

object.GetHashCode()

ToString()

public override string ToString()

Returns a string that represents the current object.

Returns
Type	Description
string	A string that represents the current object.

Overrides

object.ToString()