Class: Google::Bigtable::V2::RowFilter
- Inherits:
-
Object
- Object
- Google::Bigtable::V2::RowFilter
- Defined in:
- lib/google/cloud/bigtable/v2/doc/google/bigtable/v2/data.rb
Overview
Takes a row as input and produces an alternate view of the row based on specified rules. For example, a RowFilter might trim down a row to include just the cells from columns matching a given regular expression, or might return all the cells of a row but not their values. More complicated filters can be composed out of these components to express requests such as, "within every column of a particular family, give just the two most recent cells which are older than timestamp X."
There are two broad categories of RowFilters (true filters and transformers), as well as two ways to compose simple filters into more complex ones (chains and interleaves). They work as follows:
True filters alter the input row by excluding some of its cells wholesale from the output row. An example of a true filter is the
value_regex_filter, which excludes cells whose values don't match the specified pattern. All regex true filters use RE2 syntax (https://github.com/google/re2/wiki/Syntax) in raw byte mode (RE2::Latin1), and are evaluated as full matches. An important point to keep in mind is thatRE2(.)is equivalent by default toRE2([^\n]), meaning that it does not match newlines. When attempting to match an arbitrary byte, you should therefore use the escape sequence\C, which may need to be further escaped as\\Cin your client language.Transformers alter the input row by changing the values of some of its cells in the output, without excluding them completely. Currently, the only supported transformer is the
strip_value_transformer, which replaces every cell's value with the empty string.Chains and interleaves are described in more detail in the RowFilter.Chain and RowFilter.Interleave documentation.
The total serialized size of a RowFilter message must not exceed 4096 bytes, and RowFilters may not be nested within each other (in Chains or Interleaves) to a depth of more than 20.
Defined Under Namespace
Classes: Chain, Condition, Interleave
Instance Attribute Summary collapse
-
#apply_label_transformer ⇒ String
Applies the given label to all cells in the output row.
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#block_all_filter ⇒ true, false
Does not match any cells, regardless of input.
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#cells_per_column_limit_filter ⇒ Integer
Matches only the most recent N cells within each column.
-
#cells_per_row_limit_filter ⇒ Integer
Matches only the first N cells of each row.
-
#cells_per_row_offset_filter ⇒ Integer
Skips the first N cells of each row, matching all subsequent cells.
-
#chain ⇒ Google::Bigtable::V2::RowFilter::Chain
Applies several RowFilters to the data in sequence, progressively narrowing the results.
-
#column_qualifier_regex_filter ⇒ String
Matches only cells from columns whose qualifiers satisfy the given RE2 regex.
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#column_range_filter ⇒ Google::Bigtable::V2::ColumnRange
Matches only cells from columns within the given range.
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#condition ⇒ Google::Bigtable::V2::RowFilter::Condition
Applies one of two possible RowFilters to the data based on the output of a predicate RowFilter.
-
#family_name_regex_filter ⇒ String
Matches only cells from columns whose families satisfy the given RE2 regex.
-
#interleave ⇒ Google::Bigtable::V2::RowFilter::Interleave
Applies several RowFilters to the data in parallel and combines the results.
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#pass_all_filter ⇒ true, false
Matches all cells, regardless of input.
-
#row_key_regex_filter ⇒ String
Matches only cells from rows whose keys satisfy the given RE2 regex.
-
#row_sample_filter ⇒ Float
Matches all cells from a row with probability p, and matches no cells from the row with probability 1-p.
-
#sink ⇒ true, false
ADVANCED USE ONLY.
-
#strip_value_transformer ⇒ true, false
Replaces each cell's value with the empty string.
-
#timestamp_range_filter ⇒ Google::Bigtable::V2::TimestampRange
Matches only cells with timestamps within the given range.
-
#value_range_filter ⇒ Google::Bigtable::V2::ValueRange
Matches only cells with values that fall within the given range.
-
#value_regex_filter ⇒ String
Matches only cells with values that satisfy the given regular expression.
Instance Attribute Details
#apply_label_transformer ⇒ String
Returns Applies the given label to all cells in the output row. This allows the client to determine which results were produced from which part of the filter.
Values must be at most 15 characters in length, and match the RE2
pattern [a-z0-9\\-]+
Due to a technical limitation, it is not currently possible to apply
multiple labels to a cell. As a result, a Chain may have no more than
one sub-filter which contains a apply_label_transformer. It is okay for
an Interleave to contain multiple apply_label_transformers, as they
will be applied to separate copies of the input. This may be relaxed in
the future.
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# File 'lib/google/cloud/bigtable/v2/doc/google/bigtable/v2/data.rb', line 344 class RowFilter # A RowFilter which sends rows through several RowFilters in sequence. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" are chained together to process the input row: # in row -> f(0) -> intermediate row -> f(1) -> ... -> f(N) -> out row # The full chain is executed atomically. class Chain; end # A RowFilter which sends each row to each of several component # RowFilters and interleaves the results. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" all process a copy of the input row, and the # results are pooled, sorted, and combined into a single output row. # If multiple cells are produced with the same column and timestamp, # they will all appear in the output row in an unspecified mutual order. # Consider the following example, with three filters: # # input row # | # ----------------------------------------------------- # | | | # f(0) f(1) f(2) # | | | # 1: foo,bar,10,x foo,bar,10,z far,bar,7,a # 2: foo,blah,11,z far,blah,5,x far,blah,5,x # | | | # ----------------------------------------------------- # | # 1: foo,bar,10,z // could have switched with #2 # 2: foo,bar,10,x // could have switched with #1 # 3: foo,blah,11,z # 4: far,bar,7,a # 5: far,blah,5,x // identical to #6 # 6: far,blah,5,x // identical to #5 # # All interleaved filters are executed atomically. class Interleave; end # A RowFilter which 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. # @!attribute [rw] predicate_filter # @return [Google::Bigtable::V2::RowFilter] # If `predicate_filter` outputs any cells, then `true_filter` will be # evaluated on the input row. Otherwise, `false_filter` will be evaluated. # @!attribute [rw] true_filter # @return [Google::Bigtable::V2::RowFilter] # 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. # @!attribute [rw] false_filter # @return [Google::Bigtable::V2::RowFilter] # 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. class Condition; end end |
#block_all_filter ⇒ true, false
Returns Does not match any cells, regardless of input. Useful for temporarily disabling just part of a filter.
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# File 'lib/google/cloud/bigtable/v2/doc/google/bigtable/v2/data.rb', line 344 class RowFilter # A RowFilter which sends rows through several RowFilters in sequence. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" are chained together to process the input row: # in row -> f(0) -> intermediate row -> f(1) -> ... -> f(N) -> out row # The full chain is executed atomically. class Chain; end # A RowFilter which sends each row to each of several component # RowFilters and interleaves the results. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" all process a copy of the input row, and the # results are pooled, sorted, and combined into a single output row. # If multiple cells are produced with the same column and timestamp, # they will all appear in the output row in an unspecified mutual order. # Consider the following example, with three filters: # # input row # | # ----------------------------------------------------- # | | | # f(0) f(1) f(2) # | | | # 1: foo,bar,10,x foo,bar,10,z far,bar,7,a # 2: foo,blah,11,z far,blah,5,x far,blah,5,x # | | | # ----------------------------------------------------- # | # 1: foo,bar,10,z // could have switched with #2 # 2: foo,bar,10,x // could have switched with #1 # 3: foo,blah,11,z # 4: far,bar,7,a # 5: far,blah,5,x // identical to #6 # 6: far,blah,5,x // identical to #5 # # All interleaved filters are executed atomically. class Interleave; end # A RowFilter which 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. # @!attribute [rw] predicate_filter # @return [Google::Bigtable::V2::RowFilter] # If `predicate_filter` outputs any cells, then `true_filter` will be # evaluated on the input row. Otherwise, `false_filter` will be evaluated. # @!attribute [rw] true_filter # @return [Google::Bigtable::V2::RowFilter] # 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. # @!attribute [rw] false_filter # @return [Google::Bigtable::V2::RowFilter] # 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. class Condition; end end |
#cells_per_column_limit_filter ⇒ Integer
Returns Matches only the most recent N cells within each column. For example,
if N=2, this filter would match column foo:bar at timestamps 10 and 9,
skip all earlier cells in foo:bar, and then begin matching again in
column foo:bar2.
If duplicate cells are present, as is possible when using an Interleave,
each copy of the cell is counted separately.
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# File 'lib/google/cloud/bigtable/v2/doc/google/bigtable/v2/data.rb', line 344 class RowFilter # A RowFilter which sends rows through several RowFilters in sequence. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" are chained together to process the input row: # in row -> f(0) -> intermediate row -> f(1) -> ... -> f(N) -> out row # The full chain is executed atomically. class Chain; end # A RowFilter which sends each row to each of several component # RowFilters and interleaves the results. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" all process a copy of the input row, and the # results are pooled, sorted, and combined into a single output row. # If multiple cells are produced with the same column and timestamp, # they will all appear in the output row in an unspecified mutual order. # Consider the following example, with three filters: # # input row # | # ----------------------------------------------------- # | | | # f(0) f(1) f(2) # | | | # 1: foo,bar,10,x foo,bar,10,z far,bar,7,a # 2: foo,blah,11,z far,blah,5,x far,blah,5,x # | | | # ----------------------------------------------------- # | # 1: foo,bar,10,z // could have switched with #2 # 2: foo,bar,10,x // could have switched with #1 # 3: foo,blah,11,z # 4: far,bar,7,a # 5: far,blah,5,x // identical to #6 # 6: far,blah,5,x // identical to #5 # # All interleaved filters are executed atomically. class Interleave; end # A RowFilter which 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. # @!attribute [rw] predicate_filter # @return [Google::Bigtable::V2::RowFilter] # If `predicate_filter` outputs any cells, then `true_filter` will be # evaluated on the input row. Otherwise, `false_filter` will be evaluated. # @!attribute [rw] true_filter # @return [Google::Bigtable::V2::RowFilter] # 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. # @!attribute [rw] false_filter # @return [Google::Bigtable::V2::RowFilter] # 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. class Condition; end end |
#cells_per_row_limit_filter ⇒ Integer
Returns Matches only the first N cells of each row. If duplicate cells are present, as is possible when using an Interleave, each copy of the cell is counted separately.
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# File 'lib/google/cloud/bigtable/v2/doc/google/bigtable/v2/data.rb', line 344 class RowFilter # A RowFilter which sends rows through several RowFilters in sequence. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" are chained together to process the input row: # in row -> f(0) -> intermediate row -> f(1) -> ... -> f(N) -> out row # The full chain is executed atomically. class Chain; end # A RowFilter which sends each row to each of several component # RowFilters and interleaves the results. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" all process a copy of the input row, and the # results are pooled, sorted, and combined into a single output row. # If multiple cells are produced with the same column and timestamp, # they will all appear in the output row in an unspecified mutual order. # Consider the following example, with three filters: # # input row # | # ----------------------------------------------------- # | | | # f(0) f(1) f(2) # | | | # 1: foo,bar,10,x foo,bar,10,z far,bar,7,a # 2: foo,blah,11,z far,blah,5,x far,blah,5,x # | | | # ----------------------------------------------------- # | # 1: foo,bar,10,z // could have switched with #2 # 2: foo,bar,10,x // could have switched with #1 # 3: foo,blah,11,z # 4: far,bar,7,a # 5: far,blah,5,x // identical to #6 # 6: far,blah,5,x // identical to #5 # # All interleaved filters are executed atomically. class Interleave; end # A RowFilter which 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. # @!attribute [rw] predicate_filter # @return [Google::Bigtable::V2::RowFilter] # If `predicate_filter` outputs any cells, then `true_filter` will be # evaluated on the input row. Otherwise, `false_filter` will be evaluated. # @!attribute [rw] true_filter # @return [Google::Bigtable::V2::RowFilter] # 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. # @!attribute [rw] false_filter # @return [Google::Bigtable::V2::RowFilter] # 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. class Condition; end end |
#cells_per_row_offset_filter ⇒ Integer
Returns Skips the first N cells of each row, matching all subsequent cells. If duplicate cells are present, as is possible when using an Interleave, each copy of the cell is counted separately.
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# File 'lib/google/cloud/bigtable/v2/doc/google/bigtable/v2/data.rb', line 344 class RowFilter # A RowFilter which sends rows through several RowFilters in sequence. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" are chained together to process the input row: # in row -> f(0) -> intermediate row -> f(1) -> ... -> f(N) -> out row # The full chain is executed atomically. class Chain; end # A RowFilter which sends each row to each of several component # RowFilters and interleaves the results. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" all process a copy of the input row, and the # results are pooled, sorted, and combined into a single output row. # If multiple cells are produced with the same column and timestamp, # they will all appear in the output row in an unspecified mutual order. # Consider the following example, with three filters: # # input row # | # ----------------------------------------------------- # | | | # f(0) f(1) f(2) # | | | # 1: foo,bar,10,x foo,bar,10,z far,bar,7,a # 2: foo,blah,11,z far,blah,5,x far,blah,5,x # | | | # ----------------------------------------------------- # | # 1: foo,bar,10,z // could have switched with #2 # 2: foo,bar,10,x // could have switched with #1 # 3: foo,blah,11,z # 4: far,bar,7,a # 5: far,blah,5,x // identical to #6 # 6: far,blah,5,x // identical to #5 # # All interleaved filters are executed atomically. class Interleave; end # A RowFilter which 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. # @!attribute [rw] predicate_filter # @return [Google::Bigtable::V2::RowFilter] # If `predicate_filter` outputs any cells, then `true_filter` will be # evaluated on the input row. Otherwise, `false_filter` will be evaluated. # @!attribute [rw] true_filter # @return [Google::Bigtable::V2::RowFilter] # 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. # @!attribute [rw] false_filter # @return [Google::Bigtable::V2::RowFilter] # 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. class Condition; end end |
#chain ⇒ Google::Bigtable::V2::RowFilter::Chain
Returns Applies several RowFilters to the data in sequence, progressively narrowing the results.
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# File 'lib/google/cloud/bigtable/v2/doc/google/bigtable/v2/data.rb', line 344 class RowFilter # A RowFilter which sends rows through several RowFilters in sequence. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" are chained together to process the input row: # in row -> f(0) -> intermediate row -> f(1) -> ... -> f(N) -> out row # The full chain is executed atomically. class Chain; end # A RowFilter which sends each row to each of several component # RowFilters and interleaves the results. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" all process a copy of the input row, and the # results are pooled, sorted, and combined into a single output row. # If multiple cells are produced with the same column and timestamp, # they will all appear in the output row in an unspecified mutual order. # Consider the following example, with three filters: # # input row # | # ----------------------------------------------------- # | | | # f(0) f(1) f(2) # | | | # 1: foo,bar,10,x foo,bar,10,z far,bar,7,a # 2: foo,blah,11,z far,blah,5,x far,blah,5,x # | | | # ----------------------------------------------------- # | # 1: foo,bar,10,z // could have switched with #2 # 2: foo,bar,10,x // could have switched with #1 # 3: foo,blah,11,z # 4: far,bar,7,a # 5: far,blah,5,x // identical to #6 # 6: far,blah,5,x // identical to #5 # # All interleaved filters are executed atomically. class Interleave; end # A RowFilter which 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. # @!attribute [rw] predicate_filter # @return [Google::Bigtable::V2::RowFilter] # If `predicate_filter` outputs any cells, then `true_filter` will be # evaluated on the input row. Otherwise, `false_filter` will be evaluated. # @!attribute [rw] true_filter # @return [Google::Bigtable::V2::RowFilter] # 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. # @!attribute [rw] false_filter # @return [Google::Bigtable::V2::RowFilter] # 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. class Condition; end end |
#column_qualifier_regex_filter ⇒ String
Returns Matches only cells from columns whose qualifiers satisfy the given RE2
regex.
Note that, since column qualifiers can contain arbitrary bytes, the \C
escape sequence must be used if a true wildcard is desired. The .
character will not match the new line character \n, which may be
present in a binary qualifier.
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# File 'lib/google/cloud/bigtable/v2/doc/google/bigtable/v2/data.rb', line 344 class RowFilter # A RowFilter which sends rows through several RowFilters in sequence. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" are chained together to process the input row: # in row -> f(0) -> intermediate row -> f(1) -> ... -> f(N) -> out row # The full chain is executed atomically. class Chain; end # A RowFilter which sends each row to each of several component # RowFilters and interleaves the results. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" all process a copy of the input row, and the # results are pooled, sorted, and combined into a single output row. # If multiple cells are produced with the same column and timestamp, # they will all appear in the output row in an unspecified mutual order. # Consider the following example, with three filters: # # input row # | # ----------------------------------------------------- # | | | # f(0) f(1) f(2) # | | | # 1: foo,bar,10,x foo,bar,10,z far,bar,7,a # 2: foo,blah,11,z far,blah,5,x far,blah,5,x # | | | # ----------------------------------------------------- # | # 1: foo,bar,10,z // could have switched with #2 # 2: foo,bar,10,x // could have switched with #1 # 3: foo,blah,11,z # 4: far,bar,7,a # 5: far,blah,5,x // identical to #6 # 6: far,blah,5,x // identical to #5 # # All interleaved filters are executed atomically. class Interleave; end # A RowFilter which 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. # @!attribute [rw] predicate_filter # @return [Google::Bigtable::V2::RowFilter] # If `predicate_filter` outputs any cells, then `true_filter` will be # evaluated on the input row. Otherwise, `false_filter` will be evaluated. # @!attribute [rw] true_filter # @return [Google::Bigtable::V2::RowFilter] # 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. # @!attribute [rw] false_filter # @return [Google::Bigtable::V2::RowFilter] # 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. class Condition; end end |
#column_range_filter ⇒ Google::Bigtable::V2::ColumnRange
Returns Matches only cells from columns within the given range.
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# File 'lib/google/cloud/bigtable/v2/doc/google/bigtable/v2/data.rb', line 344 class RowFilter # A RowFilter which sends rows through several RowFilters in sequence. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" are chained together to process the input row: # in row -> f(0) -> intermediate row -> f(1) -> ... -> f(N) -> out row # The full chain is executed atomically. class Chain; end # A RowFilter which sends each row to each of several component # RowFilters and interleaves the results. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" all process a copy of the input row, and the # results are pooled, sorted, and combined into a single output row. # If multiple cells are produced with the same column and timestamp, # they will all appear in the output row in an unspecified mutual order. # Consider the following example, with three filters: # # input row # | # ----------------------------------------------------- # | | | # f(0) f(1) f(2) # | | | # 1: foo,bar,10,x foo,bar,10,z far,bar,7,a # 2: foo,blah,11,z far,blah,5,x far,blah,5,x # | | | # ----------------------------------------------------- # | # 1: foo,bar,10,z // could have switched with #2 # 2: foo,bar,10,x // could have switched with #1 # 3: foo,blah,11,z # 4: far,bar,7,a # 5: far,blah,5,x // identical to #6 # 6: far,blah,5,x // identical to #5 # # All interleaved filters are executed atomically. class Interleave; end # A RowFilter which 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. # @!attribute [rw] predicate_filter # @return [Google::Bigtable::V2::RowFilter] # If `predicate_filter` outputs any cells, then `true_filter` will be # evaluated on the input row. Otherwise, `false_filter` will be evaluated. # @!attribute [rw] true_filter # @return [Google::Bigtable::V2::RowFilter] # 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. # @!attribute [rw] false_filter # @return [Google::Bigtable::V2::RowFilter] # 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. class Condition; end end |
#condition ⇒ Google::Bigtable::V2::RowFilter::Condition
Returns Applies one of two possible RowFilters to the data based on the output of a predicate RowFilter.
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# File 'lib/google/cloud/bigtable/v2/doc/google/bigtable/v2/data.rb', line 344 class RowFilter # A RowFilter which sends rows through several RowFilters in sequence. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" are chained together to process the input row: # in row -> f(0) -> intermediate row -> f(1) -> ... -> f(N) -> out row # The full chain is executed atomically. class Chain; end # A RowFilter which sends each row to each of several component # RowFilters and interleaves the results. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" all process a copy of the input row, and the # results are pooled, sorted, and combined into a single output row. # If multiple cells are produced with the same column and timestamp, # they will all appear in the output row in an unspecified mutual order. # Consider the following example, with three filters: # # input row # | # ----------------------------------------------------- # | | | # f(0) f(1) f(2) # | | | # 1: foo,bar,10,x foo,bar,10,z far,bar,7,a # 2: foo,blah,11,z far,blah,5,x far,blah,5,x # | | | # ----------------------------------------------------- # | # 1: foo,bar,10,z // could have switched with #2 # 2: foo,bar,10,x // could have switched with #1 # 3: foo,blah,11,z # 4: far,bar,7,a # 5: far,blah,5,x // identical to #6 # 6: far,blah,5,x // identical to #5 # # All interleaved filters are executed atomically. class Interleave; end # A RowFilter which 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. # @!attribute [rw] predicate_filter # @return [Google::Bigtable::V2::RowFilter] # If `predicate_filter` outputs any cells, then `true_filter` will be # evaluated on the input row. Otherwise, `false_filter` will be evaluated. # @!attribute [rw] true_filter # @return [Google::Bigtable::V2::RowFilter] # 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. # @!attribute [rw] false_filter # @return [Google::Bigtable::V2::RowFilter] # 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. class Condition; end end |
#family_name_regex_filter ⇒ String
Returns Matches only cells from columns whose families satisfy the given RE2
regex. For technical reasons, the regex must not contain the :
character, even if it is not being used as a literal.
Note that, since column families cannot contain the new line character
\n, it is sufficient to use . as a full wildcard when matching
column family names.
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# File 'lib/google/cloud/bigtable/v2/doc/google/bigtable/v2/data.rb', line 344 class RowFilter # A RowFilter which sends rows through several RowFilters in sequence. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" are chained together to process the input row: # in row -> f(0) -> intermediate row -> f(1) -> ... -> f(N) -> out row # The full chain is executed atomically. class Chain; end # A RowFilter which sends each row to each of several component # RowFilters and interleaves the results. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" all process a copy of the input row, and the # results are pooled, sorted, and combined into a single output row. # If multiple cells are produced with the same column and timestamp, # they will all appear in the output row in an unspecified mutual order. # Consider the following example, with three filters: # # input row # | # ----------------------------------------------------- # | | | # f(0) f(1) f(2) # | | | # 1: foo,bar,10,x foo,bar,10,z far,bar,7,a # 2: foo,blah,11,z far,blah,5,x far,blah,5,x # | | | # ----------------------------------------------------- # | # 1: foo,bar,10,z // could have switched with #2 # 2: foo,bar,10,x // could have switched with #1 # 3: foo,blah,11,z # 4: far,bar,7,a # 5: far,blah,5,x // identical to #6 # 6: far,blah,5,x // identical to #5 # # All interleaved filters are executed atomically. class Interleave; end # A RowFilter which 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. # @!attribute [rw] predicate_filter # @return [Google::Bigtable::V2::RowFilter] # If `predicate_filter` outputs any cells, then `true_filter` will be # evaluated on the input row. Otherwise, `false_filter` will be evaluated. # @!attribute [rw] true_filter # @return [Google::Bigtable::V2::RowFilter] # 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. # @!attribute [rw] false_filter # @return [Google::Bigtable::V2::RowFilter] # 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. class Condition; end end |
#interleave ⇒ Google::Bigtable::V2::RowFilter::Interleave
Returns Applies several RowFilters to the data in parallel and combines the results.
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# File 'lib/google/cloud/bigtable/v2/doc/google/bigtable/v2/data.rb', line 344 class RowFilter # A RowFilter which sends rows through several RowFilters in sequence. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" are chained together to process the input row: # in row -> f(0) -> intermediate row -> f(1) -> ... -> f(N) -> out row # The full chain is executed atomically. class Chain; end # A RowFilter which sends each row to each of several component # RowFilters and interleaves the results. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" all process a copy of the input row, and the # results are pooled, sorted, and combined into a single output row. # If multiple cells are produced with the same column and timestamp, # they will all appear in the output row in an unspecified mutual order. # Consider the following example, with three filters: # # input row # | # ----------------------------------------------------- # | | | # f(0) f(1) f(2) # | | | # 1: foo,bar,10,x foo,bar,10,z far,bar,7,a # 2: foo,blah,11,z far,blah,5,x far,blah,5,x # | | | # ----------------------------------------------------- # | # 1: foo,bar,10,z // could have switched with #2 # 2: foo,bar,10,x // could have switched with #1 # 3: foo,blah,11,z # 4: far,bar,7,a # 5: far,blah,5,x // identical to #6 # 6: far,blah,5,x // identical to #5 # # All interleaved filters are executed atomically. class Interleave; end # A RowFilter which 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. # @!attribute [rw] predicate_filter # @return [Google::Bigtable::V2::RowFilter] # If `predicate_filter` outputs any cells, then `true_filter` will be # evaluated on the input row. Otherwise, `false_filter` will be evaluated. # @!attribute [rw] true_filter # @return [Google::Bigtable::V2::RowFilter] # 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. # @!attribute [rw] false_filter # @return [Google::Bigtable::V2::RowFilter] # 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. class Condition; end end |
#pass_all_filter ⇒ true, false
Returns Matches all cells, regardless of input. Functionally equivalent to
leaving filter unset, but included for completeness.
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# File 'lib/google/cloud/bigtable/v2/doc/google/bigtable/v2/data.rb', line 344 class RowFilter # A RowFilter which sends rows through several RowFilters in sequence. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" are chained together to process the input row: # in row -> f(0) -> intermediate row -> f(1) -> ... -> f(N) -> out row # The full chain is executed atomically. class Chain; end # A RowFilter which sends each row to each of several component # RowFilters and interleaves the results. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" all process a copy of the input row, and the # results are pooled, sorted, and combined into a single output row. # If multiple cells are produced with the same column and timestamp, # they will all appear in the output row in an unspecified mutual order. # Consider the following example, with three filters: # # input row # | # ----------------------------------------------------- # | | | # f(0) f(1) f(2) # | | | # 1: foo,bar,10,x foo,bar,10,z far,bar,7,a # 2: foo,blah,11,z far,blah,5,x far,blah,5,x # | | | # ----------------------------------------------------- # | # 1: foo,bar,10,z // could have switched with #2 # 2: foo,bar,10,x // could have switched with #1 # 3: foo,blah,11,z # 4: far,bar,7,a # 5: far,blah,5,x // identical to #6 # 6: far,blah,5,x // identical to #5 # # All interleaved filters are executed atomically. class Interleave; end # A RowFilter which 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. # @!attribute [rw] predicate_filter # @return [Google::Bigtable::V2::RowFilter] # If `predicate_filter` outputs any cells, then `true_filter` will be # evaluated on the input row. Otherwise, `false_filter` will be evaluated. # @!attribute [rw] true_filter # @return [Google::Bigtable::V2::RowFilter] # 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. # @!attribute [rw] false_filter # @return [Google::Bigtable::V2::RowFilter] # 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. class Condition; end end |
#row_key_regex_filter ⇒ String
Returns Matches only cells from rows whose keys satisfy the given RE2 regex. In
other words, passes through the entire row when the key matches, and
otherwise produces an empty row.
Note that, since row keys can contain arbitrary bytes, the \C escape
sequence must be used if a true wildcard is desired. The . character
will not match the new line character \n, which may be present in a
binary key.
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# File 'lib/google/cloud/bigtable/v2/doc/google/bigtable/v2/data.rb', line 344 class RowFilter # A RowFilter which sends rows through several RowFilters in sequence. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" are chained together to process the input row: # in row -> f(0) -> intermediate row -> f(1) -> ... -> f(N) -> out row # The full chain is executed atomically. class Chain; end # A RowFilter which sends each row to each of several component # RowFilters and interleaves the results. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" all process a copy of the input row, and the # results are pooled, sorted, and combined into a single output row. # If multiple cells are produced with the same column and timestamp, # they will all appear in the output row in an unspecified mutual order. # Consider the following example, with three filters: # # input row # | # ----------------------------------------------------- # | | | # f(0) f(1) f(2) # | | | # 1: foo,bar,10,x foo,bar,10,z far,bar,7,a # 2: foo,blah,11,z far,blah,5,x far,blah,5,x # | | | # ----------------------------------------------------- # | # 1: foo,bar,10,z // could have switched with #2 # 2: foo,bar,10,x // could have switched with #1 # 3: foo,blah,11,z # 4: far,bar,7,a # 5: far,blah,5,x // identical to #6 # 6: far,blah,5,x // identical to #5 # # All interleaved filters are executed atomically. class Interleave; end # A RowFilter which 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. # @!attribute [rw] predicate_filter # @return [Google::Bigtable::V2::RowFilter] # If `predicate_filter` outputs any cells, then `true_filter` will be # evaluated on the input row. Otherwise, `false_filter` will be evaluated. # @!attribute [rw] true_filter # @return [Google::Bigtable::V2::RowFilter] # 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. # @!attribute [rw] false_filter # @return [Google::Bigtable::V2::RowFilter] # 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. class Condition; end end |
#row_sample_filter ⇒ Float
Returns Matches all cells from a row with probability p, and matches no cells from the row with probability 1-p.
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# File 'lib/google/cloud/bigtable/v2/doc/google/bigtable/v2/data.rb', line 344 class RowFilter # A RowFilter which sends rows through several RowFilters in sequence. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" are chained together to process the input row: # in row -> f(0) -> intermediate row -> f(1) -> ... -> f(N) -> out row # The full chain is executed atomically. class Chain; end # A RowFilter which sends each row to each of several component # RowFilters and interleaves the results. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" all process a copy of the input row, and the # results are pooled, sorted, and combined into a single output row. # If multiple cells are produced with the same column and timestamp, # they will all appear in the output row in an unspecified mutual order. # Consider the following example, with three filters: # # input row # | # ----------------------------------------------------- # | | | # f(0) f(1) f(2) # | | | # 1: foo,bar,10,x foo,bar,10,z far,bar,7,a # 2: foo,blah,11,z far,blah,5,x far,blah,5,x # | | | # ----------------------------------------------------- # | # 1: foo,bar,10,z // could have switched with #2 # 2: foo,bar,10,x // could have switched with #1 # 3: foo,blah,11,z # 4: far,bar,7,a # 5: far,blah,5,x // identical to #6 # 6: far,blah,5,x // identical to #5 # # All interleaved filters are executed atomically. class Interleave; end # A RowFilter which 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. # @!attribute [rw] predicate_filter # @return [Google::Bigtable::V2::RowFilter] # If `predicate_filter` outputs any cells, then `true_filter` will be # evaluated on the input row. Otherwise, `false_filter` will be evaluated. # @!attribute [rw] true_filter # @return [Google::Bigtable::V2::RowFilter] # 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. # @!attribute [rw] false_filter # @return [Google::Bigtable::V2::RowFilter] # 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. class Condition; end end |
#sink ⇒ true, false
Returns ADVANCED USE ONLY. Hook for introspection into the RowFilter. Outputs all cells directly to the output of the read rather than to any parent filter. Consider the following example:
Chain(
FamilyRegex("A"),
Interleave(
All(),
Chain(Label("foo"), Sink())
),
QualifierRegex("B")
)
A,A,1,w
A,B,2,x
B,B,4,z
|
FamilyRegex("A")
|
A,A,1,w
A,B,2,x
|
+------------+-------------+
| |
All() Label(foo)
| |
A,A,1,w A,A,1,w,labels:[foo]
A,B,2,x A,B,2,x,labels:[foo]
| |
| Sink() --------------+
| | |
+------------+ x------+ A,A,1,w,labels:[foo]
| A,B,2,x,labels:[foo]
A,A,1,w |
A,B,2,x |
| |
QualifierRegex("B") |
| |
A,B,2,x |
| |
+--------------------------------+
|
A,A,1,w,labels:[foo]
A,B,2,x,labels:[foo] // could be switched
A,B,2,x // could be switched
Despite being excluded by the qualifier filter, a copy of every cell that reaches the sink is present in the final result.
As with an Interleave, duplicate cells are possible, and appear in an unspecified mutual order. In this case we have a duplicate with column "A:B" and timestamp 2, because one copy passed through the all filter while the other was passed through the label and sink. Note that one copy has label "foo", while the other does not.
Cannot be used within the predicate_filter, true_filter, or
false_filter of a Condition.
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# File 'lib/google/cloud/bigtable/v2/doc/google/bigtable/v2/data.rb', line 344 class RowFilter # A RowFilter which sends rows through several RowFilters in sequence. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" are chained together to process the input row: # in row -> f(0) -> intermediate row -> f(1) -> ... -> f(N) -> out row # The full chain is executed atomically. class Chain; end # A RowFilter which sends each row to each of several component # RowFilters and interleaves the results. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" all process a copy of the input row, and the # results are pooled, sorted, and combined into a single output row. # If multiple cells are produced with the same column and timestamp, # they will all appear in the output row in an unspecified mutual order. # Consider the following example, with three filters: # # input row # | # ----------------------------------------------------- # | | | # f(0) f(1) f(2) # | | | # 1: foo,bar,10,x foo,bar,10,z far,bar,7,a # 2: foo,blah,11,z far,blah,5,x far,blah,5,x # | | | # ----------------------------------------------------- # | # 1: foo,bar,10,z // could have switched with #2 # 2: foo,bar,10,x // could have switched with #1 # 3: foo,blah,11,z # 4: far,bar,7,a # 5: far,blah,5,x // identical to #6 # 6: far,blah,5,x // identical to #5 # # All interleaved filters are executed atomically. class Interleave; end # A RowFilter which 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. # @!attribute [rw] predicate_filter # @return [Google::Bigtable::V2::RowFilter] # If `predicate_filter` outputs any cells, then `true_filter` will be # evaluated on the input row. Otherwise, `false_filter` will be evaluated. # @!attribute [rw] true_filter # @return [Google::Bigtable::V2::RowFilter] # 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. # @!attribute [rw] false_filter # @return [Google::Bigtable::V2::RowFilter] # 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. class Condition; end end |
#strip_value_transformer ⇒ true, false
Returns Replaces each cell's value with the empty string.
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# File 'lib/google/cloud/bigtable/v2/doc/google/bigtable/v2/data.rb', line 344 class RowFilter # A RowFilter which sends rows through several RowFilters in sequence. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" are chained together to process the input row: # in row -> f(0) -> intermediate row -> f(1) -> ... -> f(N) -> out row # The full chain is executed atomically. class Chain; end # A RowFilter which sends each row to each of several component # RowFilters and interleaves the results. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" all process a copy of the input row, and the # results are pooled, sorted, and combined into a single output row. # If multiple cells are produced with the same column and timestamp, # they will all appear in the output row in an unspecified mutual order. # Consider the following example, with three filters: # # input row # | # ----------------------------------------------------- # | | | # f(0) f(1) f(2) # | | | # 1: foo,bar,10,x foo,bar,10,z far,bar,7,a # 2: foo,blah,11,z far,blah,5,x far,blah,5,x # | | | # ----------------------------------------------------- # | # 1: foo,bar,10,z // could have switched with #2 # 2: foo,bar,10,x // could have switched with #1 # 3: foo,blah,11,z # 4: far,bar,7,a # 5: far,blah,5,x // identical to #6 # 6: far,blah,5,x // identical to #5 # # All interleaved filters are executed atomically. class Interleave; end # A RowFilter which 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. # @!attribute [rw] predicate_filter # @return [Google::Bigtable::V2::RowFilter] # If `predicate_filter` outputs any cells, then `true_filter` will be # evaluated on the input row. Otherwise, `false_filter` will be evaluated. # @!attribute [rw] true_filter # @return [Google::Bigtable::V2::RowFilter] # 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. # @!attribute [rw] false_filter # @return [Google::Bigtable::V2::RowFilter] # 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. class Condition; end end |
#timestamp_range_filter ⇒ Google::Bigtable::V2::TimestampRange
Returns Matches only cells with timestamps within the given range.
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# File 'lib/google/cloud/bigtable/v2/doc/google/bigtable/v2/data.rb', line 344 class RowFilter # A RowFilter which sends rows through several RowFilters in sequence. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" are chained together to process the input row: # in row -> f(0) -> intermediate row -> f(1) -> ... -> f(N) -> out row # The full chain is executed atomically. class Chain; end # A RowFilter which sends each row to each of several component # RowFilters and interleaves the results. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" all process a copy of the input row, and the # results are pooled, sorted, and combined into a single output row. # If multiple cells are produced with the same column and timestamp, # they will all appear in the output row in an unspecified mutual order. # Consider the following example, with three filters: # # input row # | # ----------------------------------------------------- # | | | # f(0) f(1) f(2) # | | | # 1: foo,bar,10,x foo,bar,10,z far,bar,7,a # 2: foo,blah,11,z far,blah,5,x far,blah,5,x # | | | # ----------------------------------------------------- # | # 1: foo,bar,10,z // could have switched with #2 # 2: foo,bar,10,x // could have switched with #1 # 3: foo,blah,11,z # 4: far,bar,7,a # 5: far,blah,5,x // identical to #6 # 6: far,blah,5,x // identical to #5 # # All interleaved filters are executed atomically. class Interleave; end # A RowFilter which 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. # @!attribute [rw] predicate_filter # @return [Google::Bigtable::V2::RowFilter] # If `predicate_filter` outputs any cells, then `true_filter` will be # evaluated on the input row. Otherwise, `false_filter` will be evaluated. # @!attribute [rw] true_filter # @return [Google::Bigtable::V2::RowFilter] # 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. # @!attribute [rw] false_filter # @return [Google::Bigtable::V2::RowFilter] # 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. class Condition; end end |
#value_range_filter ⇒ Google::Bigtable::V2::ValueRange
Returns Matches only cells with values that fall within the given range.
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# File 'lib/google/cloud/bigtable/v2/doc/google/bigtable/v2/data.rb', line 344 class RowFilter # A RowFilter which sends rows through several RowFilters in sequence. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" are chained together to process the input row: # in row -> f(0) -> intermediate row -> f(1) -> ... -> f(N) -> out row # The full chain is executed atomically. class Chain; end # A RowFilter which sends each row to each of several component # RowFilters and interleaves the results. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" all process a copy of the input row, and the # results are pooled, sorted, and combined into a single output row. # If multiple cells are produced with the same column and timestamp, # they will all appear in the output row in an unspecified mutual order. # Consider the following example, with three filters: # # input row # | # ----------------------------------------------------- # | | | # f(0) f(1) f(2) # | | | # 1: foo,bar,10,x foo,bar,10,z far,bar,7,a # 2: foo,blah,11,z far,blah,5,x far,blah,5,x # | | | # ----------------------------------------------------- # | # 1: foo,bar,10,z // could have switched with #2 # 2: foo,bar,10,x // could have switched with #1 # 3: foo,blah,11,z # 4: far,bar,7,a # 5: far,blah,5,x // identical to #6 # 6: far,blah,5,x // identical to #5 # # All interleaved filters are executed atomically. class Interleave; end # A RowFilter which 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. # @!attribute [rw] predicate_filter # @return [Google::Bigtable::V2::RowFilter] # If `predicate_filter` outputs any cells, then `true_filter` will be # evaluated on the input row. Otherwise, `false_filter` will be evaluated. # @!attribute [rw] true_filter # @return [Google::Bigtable::V2::RowFilter] # 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. # @!attribute [rw] false_filter # @return [Google::Bigtable::V2::RowFilter] # 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. class Condition; end end |
#value_regex_filter ⇒ String
Returns Matches only cells with values that satisfy the given regular expression.
Note that, since cell values can contain arbitrary bytes, the \C escape
sequence must be used if a true wildcard is desired. The . character
will not match the new line character \n, which may be present in a
binary value.
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# File 'lib/google/cloud/bigtable/v2/doc/google/bigtable/v2/data.rb', line 344 class RowFilter # A RowFilter which sends rows through several RowFilters in sequence. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" are chained together to process the input row: # in row -> f(0) -> intermediate row -> f(1) -> ... -> f(N) -> out row # The full chain is executed atomically. class Chain; end # A RowFilter which sends each row to each of several component # RowFilters and interleaves the results. # @!attribute [rw] filters # @return [Array<Google::Bigtable::V2::RowFilter>] # The elements of "filters" all process a copy of the input row, and the # results are pooled, sorted, and combined into a single output row. # If multiple cells are produced with the same column and timestamp, # they will all appear in the output row in an unspecified mutual order. # Consider the following example, with three filters: # # input row # | # ----------------------------------------------------- # | | | # f(0) f(1) f(2) # | | | # 1: foo,bar,10,x foo,bar,10,z far,bar,7,a # 2: foo,blah,11,z far,blah,5,x far,blah,5,x # | | | # ----------------------------------------------------- # | # 1: foo,bar,10,z // could have switched with #2 # 2: foo,bar,10,x // could have switched with #1 # 3: foo,blah,11,z # 4: far,bar,7,a # 5: far,blah,5,x // identical to #6 # 6: far,blah,5,x // identical to #5 # # All interleaved filters are executed atomically. class Interleave; end # A RowFilter which 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. # @!attribute [rw] predicate_filter # @return [Google::Bigtable::V2::RowFilter] # If `predicate_filter` outputs any cells, then `true_filter` will be # evaluated on the input row. Otherwise, `false_filter` will be evaluated. # @!attribute [rw] true_filter # @return [Google::Bigtable::V2::RowFilter] # 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. # @!attribute [rw] false_filter # @return [Google::Bigtable::V2::RowFilter] # 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. class Condition; end end |