
Best Java code snippets using com.google.protobuf.Struct(Showing top 20 results out of 315)
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- Common ways to obtain Struct
private void myMethod () {
Struct.getDefaultInstance()
Struct.Builder builderForValue;builderForValue.build()
SingleFieldBuilderV3 payloadBuilder_;payloadBuilder_.getMessage()
- Smart code suggestions by Tabnine
}
Is "google/protobuf/struct.proto" the best way to send dynamic JSON over GRPC?
Based on this proto file.
I think it is a good solution to use the type.
The folks with their answers, helped me a lot at the beginning, so I would like to say thanks for your work! :) I really appreciate both solutions! :) On the other hand, I think I found a better one to produce these kinds of .
Anuj's Solution
This is a little bit overcomplicated but it can work.
Luke's Solution
This is a shorter one but still require more conversion than necessary.
The solution from my perspective
My solution will use the official functions from the package which is pretty well documented and user friendly.
Documentation:https://pkg.go.dev/google.golang.org/protobuf/types/known/structpb
For example, this code creates a via the function that was designed to do this.
One of the most important thing, that we should keep in mind when we are building from a is this:
https://pkg.go.dev/google.golang.org/protobuf/types/known/structpb#NewValue
For example, if you would like to produce a that has a string list in its JSON form, you should create the following
Sorry for the long post, I hope it makes your work easier with and ! :)
answered Nov 26 '20 at 17:29
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Unordered map of dynamically typed values.
Compares the specified object with this message for equality.
Get an instance of the type with no fields set.
Deprecated.
Unordered map of dynamically typed values.
Unordered map of dynamically typed values.
Unordered map of dynamically typed values.
Unordered map of dynamically typed values.
Gets the parser for a message of the same type as this message.
Get the number of bytes required to encode this message.
Get the for this message.
Returns the hash code value for this message.
Get the FieldAccessorTable for this type.
Gets the map field with the given field number.
Returns true if all required fields in the message and all embedded messages are set, false otherwise.
Constructs a new builder for a message of the same type as this message.
TODO(xiaofeng): remove this together with GeneratedMessageV3.BuilderParent.
Constructs a builder initialized with the current message.
Serializes the message and writes it to .
Struct protobuf
Package structpb contains generated types for google/protobuf/struct.proto.
The messages (i.e., Value, Struct, and ListValue) defined in struct.proto are used to represent arbitrary JSON. The Value message represents a JSON value, the Struct message represents a JSON object, and the ListValue message represents a JSON array. See https://json.org for more information.
The Value, Struct, and ListValue types have generated MarshalJSON and UnmarshalJSON methods such that they serialize JSON equivalent to what the messages themselves represent. Use of these types with the "google.golang.org/protobuf/encoding/protojson" package ensures that they will be serialized as their JSON equivalent.
Conversion to and from a Go interface ¶
The standard Go "encoding/json" package has functionality to serialize arbitrary types to a large degree. The Value.AsInterface, Struct.AsMap, and ListValue.AsSlice methods can convert the protobuf message representation into a form represented by interface{}, map[string]interface{}, and []interface{}. This form can be used with other packages that operate on such data structures and also directly with the standard json package.
In order to convert the interface{}, map[string]interface{}, and []interface{} forms back as Value, Struct, and ListValue messages, use the NewStruct, NewList, and NewValue constructor functions.
Example usage ¶
Consider the following example JSON object:
{ "firstName": "John", "lastName": "Smith", "isAlive": true, "age": 27, "address": { "streetAddress": "21 2nd Street", "city": "New York", "state": "NY", "postalCode": "10021-3100" }, "phoneNumbers": [ { "type": "home", "number": "212 555-1234" }, { "type": "office", "number": "646 555-4567" } ], "children": [], "spouse": null }To construct a Value message representing the above JSON object:
m, err := structpb.NewValue(map[string]interface{}{ "firstName": "John", "lastName": "Smith", "isAlive": true, "age": 27, "address": map[string]interface{}{ "streetAddress": "21 2nd Street", "city": "New York", "state": "NY", "postalCode": "10021-3100", }, "phoneNumbers": []interface{}{ map[string]interface{}{ "type": "home", "number": "212 555-1234", }, map[string]interface{}{ "type": "office", "number": "646 555-4567", }, }, "children": []interface{}{}, "spouse": nil, }) if err != nil { ... // handle error } ... // make use of m as a *structpb.Value- Variables
- type ListValue
- type NullValue
- type Struct
- type Value
- type Value_BoolValue
- type Value_ListValue
- type Value_NullValue
- type Value_NumberValue
- type Value_StringValue
- type Value_StructValue
This section is empty.
Enum value maps for NullValue.
This section is empty.
`ListValue` is a wrapper around a repeated field of values.
The JSON representation for `ListValue` is JSON array.
NewList constructs a ListValue from a general-purpose Go slice. The slice elements are converted using NewValue.
AsSlice converts x to a general-purpose Go slice. The slice elements are converted by calling Value.AsInterface.
`Struct` represents a structured data value, consisting of fields which map to dynamically typed values. In some languages, `Struct` might be supported by a native representation. For example, in scripting languages like JS a struct is represented as an object. The details of that representation are described together with the proto support for the language.
The JSON representation for `Struct` is JSON object.
NewStruct constructs a Struct from a general-purpose Go map. The map keys must be valid UTF-8. The map values are converted using NewValue.
AsMap converts x to a general-purpose Go map. The map values are converted by calling Value.AsInterface.
`Value` represents a dynamically typed value which can be either null, a number, a string, a boolean, a recursive struct value, or a list of values. A producer of value is expected to set one of that variants, absence of any variant indicates an error.
The JSON representation for `Value` is JSON value.
NewBoolValue constructs a new boolean Value.
NewListValue constructs a new list Value.
NewNullValue constructs a new null Value.
NewNumberValue constructs a new number Value.
NewStringValue constructs a new string Value.
NewStructValue constructs a new struct Value.
NewValue constructs a Value from a general-purpose Go interface.
╔════════════════════════╤════════════════════════════════════════════╗ ║ Go type │ Conversion ║ ╠════════════════════════╪════════════════════════════════════════════╣ ║ nil │ stored as NullValue ║ ║ bool │ stored as BoolValue ║ ║ int, int32, int64 │ stored as NumberValue ║ ║ uint, uint32, uint64 │ stored as NumberValue ║ ║ float32, float64 │ stored as NumberValue ║ ║ string │ stored as StringValue; must be valid UTF-8 ║ ║ []byte │ stored as StringValue; base64-encoded ║ ║ map[string]interface{} │ stored as StructValue ║ ║ []interface{} │ stored as ListValue ║ ╚════════════════════════╧════════════════════════════════════════════╝When converting an int64 or uint64 to a NumberValue, numeric precision loss is possible since they are stored as a float64.
AsInterface converts x to a general-purpose Go interface.
Calling Value.MarshalJSON and "encoding/json".Marshal on this output produce semantically equivalent JSON (assuming no errors occur).
Floating-point values (i.e., "NaN", "Infinity", and "-Infinity") are converted as strings to remain compatible with MarshalJSON.
Turning to me, she said: - Thank you for the evening, Sasha, I noticed in her eyes a kind of strained. Confusion. Everything was wonderful.
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