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.
SEO Analysis
AI Generated
Backend infrastructure with indirect SEO impact. This model (Google Type Expr) contains 4 attributes that define its data structure. Key functionality includes: Optional. Description of the expression. This is a longer text which describes the expression, e.g. when hovered over it in a UI.
Actionable Insights for SEOs
Understanding this model helps SEOs grasp Google's internal data architecture
Attributes
4
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descriptionstring
Default: nilFull type: String.t
Optional. Description of the expression. This is a longer text which describes the expression, e.g. when hovered over it in a UI.
expressionstring
Default: nilFull type: String.t
Textual representation of an expression in Common Expression Language syntax.
locationstring
Default: nilFull type: String.t
Optional. String indicating the location of the expression for error reporting, e.g. a file name and a position in the file.
titlestring
Default: nilFull type: String.t
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.