Class: Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo

Inherits:

Object

• Object
• Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo

Extended by:

Protobuf::MessageExts::ClassMethods

Includes:

Protobuf::MessageExts

Defined in:

proto_docs/google/cloud/discoveryengine/v1/search_service.rb

Overview

Information describing what natural language understanding was done on the input query.

Defined Under Namespace

Classes: StructuredExtractedFilter

Instance Attribute Summary

• #classified_intents ⇒ ::Array<::String>

  The classified intents from the input query.

• #extracted_filters ⇒ ::String

  The filters that were extracted from the input query.

• #rewritten_query ⇒ ::String

  Rewritten input query minus the extracted filters.

• #structured_extracted_filter ⇒ ::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter

  The filters that were extracted from the input query represented in a structured form.

Instance Attribute Details

#classified_intents ⇒ ::Array<::String>

Returns The classified intents from the input query.

Returns:

• (::Array<::String>) —

  The classified intents from the input query.

# File 'proto_docs/google/cloud/discoveryengine/v1/search_service.rb', line 1761

class NaturalLanguageQueryUnderstandingInfo
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # The filters that were extracted from the input query represented in a
  # structured form.
  # @!attribute [rw] expression
  #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::Expression]
  #     The expression denoting the filter that was extracted from the input
  #     query in a structured form. It can be a simple expression denoting a
  #     single string, numerical or geolocation constraint or a compound
  #     expression which is a combination of multiple expressions connected
  #     using logical (OR and AND) operators.
  class StructuredExtractedFilter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Constraint expression of a string field.
    # @!attribute [rw] field_name
    #   @return [::String]
    #     Name of the string field as defined in the schema.
    # @!attribute [rw] values
    #   @return [::Array<::String>]
    #     Values of the string field. The record will only be returned if the
    #     field value matches one of the values specified here.
    # @!attribute [rw] query_segment
    #   @return [::String]
    #     Identifies the keywords within the search query that match a filter.
    class StringConstraint
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Constraint expression of a number field. Example: price < 100.
    # @!attribute [rw] field_name
    #   @return [::String]
    #     Name of the numerical field as defined in the schema.
    # @!attribute [rw] comparison
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::NumberConstraint::Comparison]
    #     The comparison operation performed between the field value and the
    #     value specified in the constraint.
    # @!attribute [rw] value
    #   @return [::Float]
    #     The value specified in the numerical constraint.
    # @!attribute [rw] query_segment
    #   @return [::String]
    #     Identifies the keywords within the search query that match a filter.
    class NumberConstraint
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The comparison operation that was performed.
      module Comparison
        # Undefined comparison operator.
        COMPARISON_UNSPECIFIED = 0

        # Denotes equality `=` operator.
        EQUALS = 1

        # Denotes less than or equal to `<=` operator.
        LESS_THAN_EQUALS = 2

        # Denotes less than `<` operator.
        LESS_THAN = 3

        # Denotes greater than or equal to `>=` operator.
        GREATER_THAN_EQUALS = 4

        # Denotes greater than `>` operator.
        GREATER_THAN = 5
      end
    end

    # Constraint of a geolocation field.
    # Name of the geolocation field as defined in the schema.
    # @!attribute [rw] field_name
    #   @return [::String]
    #     The name of the geolocation field as defined in the schema.
    # @!attribute [rw] address
    #   @return [::String]
    #     The reference address that was inferred from the input query. The
    #     proximity of the reference address to the geolocation field will be
    #     used to filter the results.
    # @!attribute [rw] latitude
    #   @return [::Float]
    #     The latitude of the geolocation inferred from the input query.
    # @!attribute [rw] longitude
    #   @return [::Float]
    #     The longitude of the geolocation inferred from the input query.
    # @!attribute [rw] radius_in_meters
    #   @return [::Float]
    #     The radius in meters around the address. The record is returned if
    #     the location of the geolocation field is within the radius.
    class GeolocationConstraint
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Logical `And` operator.
    # @!attribute [rw] expressions
    #   @return [::Array<::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::Expression>]
    #     The expressions that were ANDed together.
    class AndExpression
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Logical `Or` operator.
    # @!attribute [rw] expressions
    #   @return [::Array<::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::Expression>]
    #     The expressions that were ORed together.
    class OrExpression
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The expression denoting the filter that was extracted from the input
    # query.
    # @!attribute [rw] string_constraint
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::StringConstraint]
    #     String constraint expression.
    #
    #     Note: The following fields are mutually exclusive: `string_constraint`, `number_constraint`, `geolocation_constraint`, `and_expr`, `or_expr`. If a field in that set is populated, all other fields in the set will automatically be cleared.
    # @!attribute [rw] number_constraint
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::NumberConstraint]
    #     Numerical constraint expression.
    #
    #     Note: The following fields are mutually exclusive: `number_constraint`, `string_constraint`, `geolocation_constraint`, `and_expr`, `or_expr`. If a field in that set is populated, all other fields in the set will automatically be cleared.
    # @!attribute [rw] geolocation_constraint
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::GeolocationConstraint]
    #     Geolocation constraint expression.
    #
    #     Note: The following fields are mutually exclusive: `geolocation_constraint`, `string_constraint`, `number_constraint`, `and_expr`, `or_expr`. If a field in that set is populated, all other fields in the set will automatically be cleared.
    # @!attribute [rw] and_expr
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::AndExpression]
    #     Logical "And" compound operator connecting multiple expressions.
    #
    #     Note: The following fields are mutually exclusive: `and_expr`, `string_constraint`, `number_constraint`, `geolocation_constraint`, `or_expr`. If a field in that set is populated, all other fields in the set will automatically be cleared.
    # @!attribute [rw] or_expr
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::OrExpression]
    #     Logical "Or" compound operator connecting multiple expressions.
    #
    #     Note: The following fields are mutually exclusive: `or_expr`, `string_constraint`, `number_constraint`, `geolocation_constraint`, `and_expr`. If a field in that set is populated, all other fields in the set will automatically be cleared.
    class Expression
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end
end

#extracted_filters ⇒ ::String

Returns The filters that were extracted from the input query.

Returns:

• (::String) —

  The filters that were extracted from the input query.

# File 'proto_docs/google/cloud/discoveryengine/v1/search_service.rb', line 1761

class NaturalLanguageQueryUnderstandingInfo
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # The filters that were extracted from the input query represented in a
  # structured form.
  # @!attribute [rw] expression
  #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::Expression]
  #     The expression denoting the filter that was extracted from the input
  #     query in a structured form. It can be a simple expression denoting a
  #     single string, numerical or geolocation constraint or a compound
  #     expression which is a combination of multiple expressions connected
  #     using logical (OR and AND) operators.
  class StructuredExtractedFilter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Constraint expression of a string field.
    # @!attribute [rw] field_name
    #   @return [::String]
    #     Name of the string field as defined in the schema.
    # @!attribute [rw] values
    #   @return [::Array<::String>]
    #     Values of the string field. The record will only be returned if the
    #     field value matches one of the values specified here.
    # @!attribute [rw] query_segment
    #   @return [::String]
    #     Identifies the keywords within the search query that match a filter.
    class StringConstraint
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Constraint expression of a number field. Example: price < 100.
    # @!attribute [rw] field_name
    #   @return [::String]
    #     Name of the numerical field as defined in the schema.
    # @!attribute [rw] comparison
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::NumberConstraint::Comparison]
    #     The comparison operation performed between the field value and the
    #     value specified in the constraint.
    # @!attribute [rw] value
    #   @return [::Float]
    #     The value specified in the numerical constraint.
    # @!attribute [rw] query_segment
    #   @return [::String]
    #     Identifies the keywords within the search query that match a filter.
    class NumberConstraint
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The comparison operation that was performed.
      module Comparison
        # Undefined comparison operator.
        COMPARISON_UNSPECIFIED = 0

        # Denotes equality `=` operator.
        EQUALS = 1

        # Denotes less than or equal to `<=` operator.
        LESS_THAN_EQUALS = 2

        # Denotes less than `<` operator.
        LESS_THAN = 3

        # Denotes greater than or equal to `>=` operator.
        GREATER_THAN_EQUALS = 4

        # Denotes greater than `>` operator.
        GREATER_THAN = 5
      end
    end

    # Constraint of a geolocation field.
    # Name of the geolocation field as defined in the schema.
    # @!attribute [rw] field_name
    #   @return [::String]
    #     The name of the geolocation field as defined in the schema.
    # @!attribute [rw] address
    #   @return [::String]
    #     The reference address that was inferred from the input query. The
    #     proximity of the reference address to the geolocation field will be
    #     used to filter the results.
    # @!attribute [rw] latitude
    #   @return [::Float]
    #     The latitude of the geolocation inferred from the input query.
    # @!attribute [rw] longitude
    #   @return [::Float]
    #     The longitude of the geolocation inferred from the input query.
    # @!attribute [rw] radius_in_meters
    #   @return [::Float]
    #     The radius in meters around the address. The record is returned if
    #     the location of the geolocation field is within the radius.
    class GeolocationConstraint
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Logical `And` operator.
    # @!attribute [rw] expressions
    #   @return [::Array<::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::Expression>]
    #     The expressions that were ANDed together.
    class AndExpression
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Logical `Or` operator.
    # @!attribute [rw] expressions
    #   @return [::Array<::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::Expression>]
    #     The expressions that were ORed together.
    class OrExpression
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The expression denoting the filter that was extracted from the input
    # query.
    # @!attribute [rw] string_constraint
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::StringConstraint]
    #     String constraint expression.
    #
    #     Note: The following fields are mutually exclusive: `string_constraint`, `number_constraint`, `geolocation_constraint`, `and_expr`, `or_expr`. If a field in that set is populated, all other fields in the set will automatically be cleared.
    # @!attribute [rw] number_constraint
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::NumberConstraint]
    #     Numerical constraint expression.
    #
    #     Note: The following fields are mutually exclusive: `number_constraint`, `string_constraint`, `geolocation_constraint`, `and_expr`, `or_expr`. If a field in that set is populated, all other fields in the set will automatically be cleared.
    # @!attribute [rw] geolocation_constraint
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::GeolocationConstraint]
    #     Geolocation constraint expression.
    #
    #     Note: The following fields are mutually exclusive: `geolocation_constraint`, `string_constraint`, `number_constraint`, `and_expr`, `or_expr`. If a field in that set is populated, all other fields in the set will automatically be cleared.
    # @!attribute [rw] and_expr
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::AndExpression]
    #     Logical "And" compound operator connecting multiple expressions.
    #
    #     Note: The following fields are mutually exclusive: `and_expr`, `string_constraint`, `number_constraint`, `geolocation_constraint`, `or_expr`. If a field in that set is populated, all other fields in the set will automatically be cleared.
    # @!attribute [rw] or_expr
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::OrExpression]
    #     Logical "Or" compound operator connecting multiple expressions.
    #
    #     Note: The following fields are mutually exclusive: `or_expr`, `string_constraint`, `number_constraint`, `geolocation_constraint`, `and_expr`. If a field in that set is populated, all other fields in the set will automatically be cleared.
    class Expression
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end
end

#rewritten_query ⇒ ::String

Returns Rewritten input query minus the extracted filters.

Returns:

• (::String) —

  Rewritten input query minus the extracted filters.

# File 'proto_docs/google/cloud/discoveryengine/v1/search_service.rb', line 1761

class NaturalLanguageQueryUnderstandingInfo
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # The filters that were extracted from the input query represented in a
  # structured form.
  # @!attribute [rw] expression
  #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::Expression]
  #     The expression denoting the filter that was extracted from the input
  #     query in a structured form. It can be a simple expression denoting a
  #     single string, numerical or geolocation constraint or a compound
  #     expression which is a combination of multiple expressions connected
  #     using logical (OR and AND) operators.
  class StructuredExtractedFilter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Constraint expression of a string field.
    # @!attribute [rw] field_name
    #   @return [::String]
    #     Name of the string field as defined in the schema.
    # @!attribute [rw] values
    #   @return [::Array<::String>]
    #     Values of the string field. The record will only be returned if the
    #     field value matches one of the values specified here.
    # @!attribute [rw] query_segment
    #   @return [::String]
    #     Identifies the keywords within the search query that match a filter.
    class StringConstraint
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Constraint expression of a number field. Example: price < 100.
    # @!attribute [rw] field_name
    #   @return [::String]
    #     Name of the numerical field as defined in the schema.
    # @!attribute [rw] comparison
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::NumberConstraint::Comparison]
    #     The comparison operation performed between the field value and the
    #     value specified in the constraint.
    # @!attribute [rw] value
    #   @return [::Float]
    #     The value specified in the numerical constraint.
    # @!attribute [rw] query_segment
    #   @return [::String]
    #     Identifies the keywords within the search query that match a filter.
    class NumberConstraint
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The comparison operation that was performed.
      module Comparison
        # Undefined comparison operator.
        COMPARISON_UNSPECIFIED = 0

        # Denotes equality `=` operator.
        EQUALS = 1

        # Denotes less than or equal to `<=` operator.
        LESS_THAN_EQUALS = 2

        # Denotes less than `<` operator.
        LESS_THAN = 3

        # Denotes greater than or equal to `>=` operator.
        GREATER_THAN_EQUALS = 4

        # Denotes greater than `>` operator.
        GREATER_THAN = 5
      end
    end

    # Constraint of a geolocation field.
    # Name of the geolocation field as defined in the schema.
    # @!attribute [rw] field_name
    #   @return [::String]
    #     The name of the geolocation field as defined in the schema.
    # @!attribute [rw] address
    #   @return [::String]
    #     The reference address that was inferred from the input query. The
    #     proximity of the reference address to the geolocation field will be
    #     used to filter the results.
    # @!attribute [rw] latitude
    #   @return [::Float]
    #     The latitude of the geolocation inferred from the input query.
    # @!attribute [rw] longitude
    #   @return [::Float]
    #     The longitude of the geolocation inferred from the input query.
    # @!attribute [rw] radius_in_meters
    #   @return [::Float]
    #     The radius in meters around the address. The record is returned if
    #     the location of the geolocation field is within the radius.
    class GeolocationConstraint
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Logical `And` operator.
    # @!attribute [rw] expressions
    #   @return [::Array<::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::Expression>]
    #     The expressions that were ANDed together.
    class AndExpression
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Logical `Or` operator.
    # @!attribute [rw] expressions
    #   @return [::Array<::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::Expression>]
    #     The expressions that were ORed together.
    class OrExpression
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The expression denoting the filter that was extracted from the input
    # query.
    # @!attribute [rw] string_constraint
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::StringConstraint]
    #     String constraint expression.
    #
    #     Note: The following fields are mutually exclusive: `string_constraint`, `number_constraint`, `geolocation_constraint`, `and_expr`, `or_expr`. If a field in that set is populated, all other fields in the set will automatically be cleared.
    # @!attribute [rw] number_constraint
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::NumberConstraint]
    #     Numerical constraint expression.
    #
    #     Note: The following fields are mutually exclusive: `number_constraint`, `string_constraint`, `geolocation_constraint`, `and_expr`, `or_expr`. If a field in that set is populated, all other fields in the set will automatically be cleared.
    # @!attribute [rw] geolocation_constraint
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::GeolocationConstraint]
    #     Geolocation constraint expression.
    #
    #     Note: The following fields are mutually exclusive: `geolocation_constraint`, `string_constraint`, `number_constraint`, `and_expr`, `or_expr`. If a field in that set is populated, all other fields in the set will automatically be cleared.
    # @!attribute [rw] and_expr
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::AndExpression]
    #     Logical "And" compound operator connecting multiple expressions.
    #
    #     Note: The following fields are mutually exclusive: `and_expr`, `string_constraint`, `number_constraint`, `geolocation_constraint`, `or_expr`. If a field in that set is populated, all other fields in the set will automatically be cleared.
    # @!attribute [rw] or_expr
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::OrExpression]
    #     Logical "Or" compound operator connecting multiple expressions.
    #
    #     Note: The following fields are mutually exclusive: `or_expr`, `string_constraint`, `number_constraint`, `geolocation_constraint`, `and_expr`. If a field in that set is populated, all other fields in the set will automatically be cleared.
    class Expression
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end
end

#structured_extracted_filter ⇒ ::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter

Returns The filters that were extracted from the input query represented in a structured form.

Returns:

• (::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter) —

  The filters that were extracted from the input query represented in a structured form.

# File 'proto_docs/google/cloud/discoveryengine/v1/search_service.rb', line 1761

class NaturalLanguageQueryUnderstandingInfo
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # The filters that were extracted from the input query represented in a
  # structured form.
  # @!attribute [rw] expression
  #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::Expression]
  #     The expression denoting the filter that was extracted from the input
  #     query in a structured form. It can be a simple expression denoting a
  #     single string, numerical or geolocation constraint or a compound
  #     expression which is a combination of multiple expressions connected
  #     using logical (OR and AND) operators.
  class StructuredExtractedFilter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Constraint expression of a string field.
    # @!attribute [rw] field_name
    #   @return [::String]
    #     Name of the string field as defined in the schema.
    # @!attribute [rw] values
    #   @return [::Array<::String>]
    #     Values of the string field. The record will only be returned if the
    #     field value matches one of the values specified here.
    # @!attribute [rw] query_segment
    #   @return [::String]
    #     Identifies the keywords within the search query that match a filter.
    class StringConstraint
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Constraint expression of a number field. Example: price < 100.
    # @!attribute [rw] field_name
    #   @return [::String]
    #     Name of the numerical field as defined in the schema.
    # @!attribute [rw] comparison
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::NumberConstraint::Comparison]
    #     The comparison operation performed between the field value and the
    #     value specified in the constraint.
    # @!attribute [rw] value
    #   @return [::Float]
    #     The value specified in the numerical constraint.
    # @!attribute [rw] query_segment
    #   @return [::String]
    #     Identifies the keywords within the search query that match a filter.
    class NumberConstraint
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The comparison operation that was performed.
      module Comparison
        # Undefined comparison operator.
        COMPARISON_UNSPECIFIED = 0

        # Denotes equality `=` operator.
        EQUALS = 1

        # Denotes less than or equal to `<=` operator.
        LESS_THAN_EQUALS = 2

        # Denotes less than `<` operator.
        LESS_THAN = 3

        # Denotes greater than or equal to `>=` operator.
        GREATER_THAN_EQUALS = 4

        # Denotes greater than `>` operator.
        GREATER_THAN = 5
      end
    end

    # Constraint of a geolocation field.
    # Name of the geolocation field as defined in the schema.
    # @!attribute [rw] field_name
    #   @return [::String]
    #     The name of the geolocation field as defined in the schema.
    # @!attribute [rw] address
    #   @return [::String]
    #     The reference address that was inferred from the input query. The
    #     proximity of the reference address to the geolocation field will be
    #     used to filter the results.
    # @!attribute [rw] latitude
    #   @return [::Float]
    #     The latitude of the geolocation inferred from the input query.
    # @!attribute [rw] longitude
    #   @return [::Float]
    #     The longitude of the geolocation inferred from the input query.
    # @!attribute [rw] radius_in_meters
    #   @return [::Float]
    #     The radius in meters around the address. The record is returned if
    #     the location of the geolocation field is within the radius.
    class GeolocationConstraint
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Logical `And` operator.
    # @!attribute [rw] expressions
    #   @return [::Array<::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::Expression>]
    #     The expressions that were ANDed together.
    class AndExpression
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Logical `Or` operator.
    # @!attribute [rw] expressions
    #   @return [::Array<::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::Expression>]
    #     The expressions that were ORed together.
    class OrExpression
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The expression denoting the filter that was extracted from the input
    # query.
    # @!attribute [rw] string_constraint
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::StringConstraint]
    #     String constraint expression.
    #
    #     Note: The following fields are mutually exclusive: `string_constraint`, `number_constraint`, `geolocation_constraint`, `and_expr`, `or_expr`. If a field in that set is populated, all other fields in the set will automatically be cleared.
    # @!attribute [rw] number_constraint
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::NumberConstraint]
    #     Numerical constraint expression.
    #
    #     Note: The following fields are mutually exclusive: `number_constraint`, `string_constraint`, `geolocation_constraint`, `and_expr`, `or_expr`. If a field in that set is populated, all other fields in the set will automatically be cleared.
    # @!attribute [rw] geolocation_constraint
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::GeolocationConstraint]
    #     Geolocation constraint expression.
    #
    #     Note: The following fields are mutually exclusive: `geolocation_constraint`, `string_constraint`, `number_constraint`, `and_expr`, `or_expr`. If a field in that set is populated, all other fields in the set will automatically be cleared.
    # @!attribute [rw] and_expr
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::AndExpression]
    #     Logical "And" compound operator connecting multiple expressions.
    #
    #     Note: The following fields are mutually exclusive: `and_expr`, `string_constraint`, `number_constraint`, `geolocation_constraint`, `or_expr`. If a field in that set is populated, all other fields in the set will automatically be cleared.
    # @!attribute [rw] or_expr
    #   @return [::Google::Cloud::DiscoveryEngine::V1::SearchResponse::NaturalLanguageQueryUnderstandingInfo::StructuredExtractedFilter::OrExpression]
    #     Logical "Or" compound operator connecting multiple expressions.
    #
    #     Note: The following fields are mutually exclusive: `or_expr`, `string_constraint`, `number_constraint`, `geolocation_constraint`, `and_expr`. If a field in that set is populated, all other fields in the set will automatically be cleared.
    class Expression
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end
  end
end