Class: Google::Cloud::Spanner::Partition
- Inherits:
-
Object
- Object
- Google::Cloud::Spanner::Partition
- Defined in:
- lib/google/cloud/spanner/partition.rb
Overview
Partition
Defines the segments of data to be read in a batch read/query context. A Partition instance can be serialized and used across several different machines or processes.
See BatchSnapshot#partition_read, BatchSnapshot#partition_query, and BatchSnapshot#execute_partition.
Instance Attribute Summary collapse
-
#execute ⇒ Object
readonly
@ private.
-
#read ⇒ Object
readonly
@ private.
Class Method Summary collapse
-
.load(data) ⇒ Google::Cloud::Spanner::Partition
Returns a Partition from a serialized representation.
Instance Method Summary collapse
-
#dump ⇒ String
(also: #serialize)
Serializes the batch partition object so it can be recreated on another process.
-
#execute? ⇒ Boolean
Whether the partition was created for an execute/query operation.
-
#read? ⇒ Boolean
Whether the partition was created for a read operation.
Instance Attribute Details
#execute ⇒ Object (readonly)
@ private
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# File 'lib/google/cloud/spanner/partition.rb', line 48 def execute @execute end |
#read ⇒ Object (readonly)
@ private
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# File 'lib/google/cloud/spanner/partition.rb', line 48 def read @read end |
Class Method Details
.load(data) ⇒ Google::Cloud::Spanner::Partition
Returns a Google::Cloud::Spanner::Partition from a serialized representation.
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# File 'lib/google/cloud/spanner/partition.rb', line 163 def self.load data data = JSON.parse data, symbolize_names: true unless data.is_a? Hash # TODO: raise if hash[:execute].nil? && hash[:read].nil? new.tap do |p| if data[:execute] execute_grpc = Google::Spanner::V1::ExecuteSqlRequest.decode \ Base64.decode64(data[:execute]) p.instance_variable_set :@execute, execute_grpc end if data[:read] read_grpc = Google::Spanner::V1::ReadRequest.decode \ Base64.decode64(data[:read]) p.instance_variable_set :@read, read_grpc end end end |
Instance Method Details
#dump ⇒ String Also known as: serialize
Serializes the batch partition object so it can be recreated on another process. See load and BatchClient#load_partition.
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# File 'lib/google/cloud/spanner/partition.rb', line 124 def dump JSON.dump to_h end |
#execute? ⇒ Boolean
Whether the partition was created for an execute/query operation.
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# File 'lib/google/cloud/spanner/partition.rb', line 57 def execute? !@execute.nil? end |
#read? ⇒ Boolean
Whether the partition was created for a read operation.
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# File 'lib/google/cloud/spanner/partition.rb', line 64 def read? !@read.nil? end |