Class: Google::Apis::SpannerV1::Expr

Inherits:

Object

• Object
• Google::Apis::SpannerV1::Expr

Includes:

Core::Hashable, Core::JsonObjectSupport

Defined in:

generated/google/apis/spanner_v1/classes.rb,
generated/google/apis/spanner_v1/representations.rb,
generated/google/apis/spanner_v1/representations.rb

Overview

Represents a textual expression in the Common Expression Language (CEL) syntax. CEL is a C-like expression language. The syntax and semantics of CEL are documented at https://github.com/google/cel-spec. Example (Comparison): title: "Summary size limit" description: "Determines if a summary is less than 100 chars" expression: "document.summary.size() < 100" Example (Equality): title: " Requestor is owner" description: "Determines if requestor is the document owner" expression: "document.owner == request.auth.claims.email" Example ( Logic): title: "Public documents" description: "Determine whether the document should be publicly visible" expression: "document.type != 'private' && document.type != 'internal'" Example (Data Manipulation): title: "Notification string" description: "Create a notification string with a timestamp." expression: "'New message received at ' + string(document.create_time)" The exact variables and functions that may be referenced within an expression are determined by the service that evaluates it. See the service documentation for additional information.

Instance Attribute Summary

• #description ⇒ String

  Optional.

• #expression ⇒ String

  Textual representation of an expression in Common Expression Language syntax.

• #location ⇒ String

  Optional.

• #title ⇒ String

  Optional.

Instance Method Summary

• #initialize(**args) ⇒ Expr constructor

  A new instance of Expr.

• #update!(**args) ⇒ Object

  Update properties of this object.

Constructor Details

#initialize(**args) ⇒ Expr

Returns a new instance of Expr.

# File 'generated/google/apis/spanner_v1/classes.rb', line 1166

def initialize(**args)
   update!(**args)
end

Instance Attribute Details

#description ⇒ String

Optional. Description of the expression. This is a longer text which describes the expression, e.g. when hovered over it in a UI. Corresponds to the JSON property description

Returns:

• (String)

# File 'generated/google/apis/spanner_v1/classes.rb', line 1147

def description
  @description
end

#expression ⇒ String

Textual representation of an expression in Common Expression Language syntax. Corresponds to the JSON property expression

Returns:

• (String)

# File 'generated/google/apis/spanner_v1/classes.rb', line 1152

def expression
  @expression
end

#location ⇒ String

Optional. String indicating the location of the expression for error reporting, e.g. a file name and a position in the file. Corresponds to the JSON property location

Returns:

• (String)

# File 'generated/google/apis/spanner_v1/classes.rb', line 1158

def location
  @location
end

#title ⇒ String

Optional. Title for the expression, i.e. a short string describing its purpose. This can be used e.g. in UIs which allow to enter the expression. Corresponds to the JSON property title

Returns:

• (String)

# File 'generated/google/apis/spanner_v1/classes.rb', line 1164

def title
  @title
end

Instance Method Details

#update!(**args) ⇒ Object

Update properties of this object

# File 'generated/google/apis/spanner_v1/classes.rb', line 1171

def update!(**args)
  @description = args[:description] if args.key?(:description)
  @expression = args[:expression] if args.key?(:expression)
  @location = args[:location] if args.key?(:location)
  @title = args[:title] if args.key?(:title)
end