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 collapse
-
#description ⇒ String
Optional.
-
#expression ⇒ String
Textual representation of an expression in Common Expression Language syntax.
-
#location ⇒ String
Optional.
-
#title ⇒ String
Optional.
Instance Method Summary collapse
-
#initialize(**args) ⇒ Expr
constructor
A new instance of Expr.
-
#update!(**args) ⇒ Object
Update properties of this object.
Methods included from Core::JsonObjectSupport
Methods included from Core::Hashable
Constructor Details
#initialize(**args) ⇒ Expr
Returns a new instance of Expr.
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# File 'generated/google/apis/spanner_v1/classes.rb', line 1161 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
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# File 'generated/google/apis/spanner_v1/classes.rb', line 1140 def description @description end |
#expression ⇒ String
Textual representation of an expression in Common Expression Language
syntax.
Corresponds to the JSON property expression
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# File 'generated/google/apis/spanner_v1/classes.rb', line 1146 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
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# File 'generated/google/apis/spanner_v1/classes.rb', line 1152 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
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# File 'generated/google/apis/spanner_v1/classes.rb', line 1159 def title @title end |
Instance Method Details
#update!(**args) ⇒ Object
Update properties of this object
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# File 'generated/google/apis/spanner_v1/classes.rb', line 1166 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 |