class Google::Cloud::Bigtable::RowFilter::ConditionFilter
A RowFilter
that evaluates one of two possible RowFilters, depending on whether or not a predicate RowFilter
outputs any cells from the input row.
IMPORTANT NOTE: The predicate filter does not execute atomically with the true and false filters, which may lead to inconsistent or unexpected results. Additionally, condition filters have poor performance, especially when filters are set for the false condition.
If `predicate_filter` outputs any cells, then `true_filter` will be evaluated on the input row. Otherwise, `false_filter` will be evaluated.
@example
predicate = Google::Cloud::Bigtable::RowFilter.key "user-*" label = Google::Cloud::Bigtable::RowFilter.label "user" strip_value = Google::Cloud::Bigtable::RowFilter.strip_value Google::Cloud::Bigtable::RowFilter.condition(predicate).on_match(label).otherwise(strip_value)
Public Class Methods
@private Creates a condition filter instance.
@param predicate [SimpleFilter, ChainFilter
, InterleaveFilter
, ConditionFilter]
# File lib/google/cloud/bigtable/row_filter/condition_filter.rb, line 50 def initialize predicate @grpc = Google::Cloud::Bigtable::V2::RowFilter::Condition.new @grpc.predicate_filter = predicate.to_grpc end
Public Instance Methods
Sets a true filter on predicate-filter match.
The filter to apply to the input row if `predicate_filter` returns any results. If not provided, no results will be returned in the true case.
@param filter [SimpleFilter, ChainFilter
, InterleaveFilter
, ConditionFilter] @return [Google::Cloud::Bigtable::RowFilter::ConditionFilter]
@example
require "google/cloud/bigtable" predicate = Google::Cloud::Bigtable::RowFilter.key "user-*" label = Google::Cloud::Bigtable::RowFilter.label "user" strip_value = Google::Cloud::Bigtable::RowFilter.strip_value Google::Cloud::Bigtable::RowFilter.condition(predicate).on_match(label).otherwise(strip_value)
# File lib/google/cloud/bigtable/row_filter/condition_filter.rb, line 73 def on_match filter @grpc.true_filter = filter.to_grpc self end
Set otherwise(false) filter.
The filter to apply to the input row if `predicate_filter` does not return any results. If not provided, no results will be returned in the false case.
@param filter [SimpleFilter, ChainFilter
, InterleaveFilter
, ConditionFilter] @return [Google::Cloud::Bigtable::RowFilter::ConditionFilter]
@example
require "google/cloud/bigtable" predicate = Google::Cloud::Bigtable::RowFilter.key "user-*" label = Google::Cloud::Bigtable::RowFilter.label "user" strip_value = Google::Cloud::Bigtable::RowFilter.strip_value Google::Cloud::Bigtable::RowFilter.condition(predicate).on_match(label).otherwise(strip_value)
# File lib/google/cloud/bigtable/row_filter/condition_filter.rb, line 98 def otherwise filter @grpc.false_filter = filter.to_grpc self end
@private Gets the row-filter gRPC instance. @return [Google::Cloud::Bigtable::V2::RowFilter]
# File lib/google/cloud/bigtable/row_filter/condition_filter.rb, line 107 def to_grpc Google::Cloud::Bigtable::V2::RowFilter.new condition: @grpc end