public sealed class Expr : IMessage<Expr>, IEquatable<Expr>, IDeepCloneable<Expr>, IBufferMessage, IMessage
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.
Namespace
Google.Type
Assembly
Google.Api.CommonProtos.dll
Constructors
Expr()
Expr(Expr)
| Parameter |
| Name |
Description |
other |
Expr
|
Fields
DescriptionFieldNumber
public const int DescriptionFieldNumber = 3
Field number for the "description" field.
| Field Value |
| Type |
Description |
int |
|
ExpressionFieldNumber
public const int ExpressionFieldNumber = 1
Field number for the "expression" field.
| Field Value |
| Type |
Description |
int |
|
LocationFieldNumber
public const int LocationFieldNumber = 4
Field number for the "location" field.
| Field Value |
| Type |
Description |
int |
|
TitleFieldNumber
public const int TitleFieldNumber = 2
Field number for the "title" field.
| Field Value |
| Type |
Description |
int |
|
Properties
Description
public string Description { get; set; }
Optional. Description of the expression. This is a longer text which
describes the expression, e.g. when hovered over it in a UI.
| Property Value |
| Type |
Description |
string |
|
Descriptor
public static MessageDescriptor Descriptor { get; }
Expression
public string Expression { get; set; }
Textual representation of an expression in Common Expression Language
syntax.
| Property Value |
| Type |
Description |
string |
|
Location
public string Location { get; set; }
Optional. String indicating the location of the expression for error
reporting, e.g. a file name and a position in the file.
| Property Value |
| Type |
Description |
string |
|
Parser
public static MessageParser<Expr> Parser { get; }
Title
public string Title { get; set; }
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.
| Property Value |
| Type |
Description |
string |
|
Methods
CalculateSize()
public int CalculateSize()
| Returns |
| Type |
Description |
int |
|
Clone()
| Returns |
| Type |
Description |
Expr |
|
Equals(Expr)
public bool Equals(Expr other)
| Parameter |
| Name |
Description |
other |
Expr
|
| Returns |
| Type |
Description |
bool |
|
Equals(object)
public override bool Equals(object other)
| Parameter |
| Name |
Description |
other |
object
|
| Returns |
| Type |
Description |
bool |
|
Overrides
GetHashCode()
public override int GetHashCode()
| Returns |
| Type |
Description |
int |
|
Overrides
public void MergeFrom(CodedInputStream input)
MergeFrom(Expr)
public void MergeFrom(Expr other)
| Parameter |
| Name |
Description |
other |
Expr
|
ToString()
public override string ToString()
| Returns |
| Type |
Description |
string |
|
Overrides
WriteTo(CodedOutputStream)
public void WriteTo(CodedOutputStream output)
