Cloud Bigtable API - Class Google::Cloud::Bigtable::RowRange (v2.11.1)

Reference documentation and code samples for the Cloud Bigtable API class Google::Cloud::Bigtable::RowRange.

RowRange

Specifies a contiguous range of rows.

  • From key bound : The row key at which to begin the range. If neither field is set, interpreted as an empty string, inclusive.
  • End key bound: The row key at which to end the range. If neither field is set, interpreted as the infinite row key, exclusive.

Inherits

  • Object

Example

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new
table = bigtable.table "my-instance", "my-table"

# Range that includes all row keys including "user-001" to "user-005"
table.new_row_range.from("user-001").to("user-005", inclusive: true)

# Range that includes all row keys including "user-001" up to exclusive "user-010".
table.new_row_range.from("user-001").to("user-010")

# Range that includes all row keys including "user-001" up until end of the row keys.
table.new_row_range.from "user-001"

# Range that includes all row keys exclusive "user-001" up until end of the row keys.
table.new_row_range.from "user-001", inclusive: false

# Range with unbounded from and the exclusive end "user-010"
table.new_row_range.to "user-010"

# Range that includes all row keys including from and end row keys "user-001", "user-010"
table.new_row_range.between "user-001", "user-010"

# Range that includes all row keys including "user-001" up until "user-010"
table.new_row_range.of "user-001", "user-010"

Methods

#between

def between(from_key, to_key) -> Google::Cloud::Bigtable::RowRange

Sets a row range with inclusive upper and lower bounds.

Parameters
  • from_key (String) — Inclusive from row key. Required.
  • to_key (String) — Inclusive end row key. Required.
Returns
Example 
require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new
table = bigtable.table "my-instance", "my-table"

range = table.new_row_range.between "key-001", "key-010"

#from

def from(key, inclusive: true) -> Google::Cloud::Bigtable::RowRange

Sets a row range with a lower bound.

Parameters
  • key (String) — Row key. Required.
  • inclusive (String) (defaults to: true) — Inclusive/exclusive lower bound. Default is an inclusive lower bound.
Returns
Examples

Inclusive lower bound.

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new
table = bigtable.table "my-instance", "my-table"

range = table.new_row_range.from "key-001"

Exclusive lower bound.

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new
table = bigtable.table "my-instance", "my-table"

range = table.new_row_range.from "key-001", inclusive: false

#of

def of(from_key, to_key) -> Google::Cloud::Bigtable::RowRange

Sets a row range with an inclusive lower bound and an exclusive upper bound.

Parameters
  • from_key (String) — Inclusive from row key.
  • to_key (String) — Exclusive end row key.
Returns
Example 
require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new
table = bigtable.table "my-instance", "my-table"

range = table.new_row_range.of "key-001", "key-010"

#to

def to(key, inclusive: false) -> Google::Cloud::Bigtable::RowRange

Sets a row range with an upper bound.

Parameters
  • key (String) — Row key. Required.
  • inclusive (String) (defaults to: false) — Inclusive/Exclusive upper bound. Default it is an exclusive upper bound.
Returns
Examples

Inclusive upper bound.

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new
table = bigtable.table "my-instance", "my-table"

range = table.new_row_range.to "key-001", inclusive: true

Exclusive upper bound.

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new
table = bigtable.table "my-instance", "my-table"

range = table.new_row_range.to "key-001"