## Summary: This is useful if you want to bind to a type you don't control (or use for other things) but need different serialization than its default. This is a feature gqlgen has and we've found it very useful. For example, in webapp we want to bind `DateTime` to `time.Time`, but its default serialization is not compatible with Python, so currently we have to bind to a wrapper type and cast all over the place, which is exactly the sort of boilerplate genqlient is supposed to avoid. For unmarshaling, the implementation basically just follows the existing support for abstract types; instead of calling our own generated helper, we now call your specified function. This required some refactoring to abstract the handling of custom unmarshalers generally from abstract types specifically, and to wire in not only the unmarshaler-name but also the `generator` (in order to compute the right import alias). For marshaling, I had to implement all that stuff over again; it's mostly parallel to unmarshaling (and I made a few minor changes to unmarshaling to make the two more parallel). Luckily, after #103 I at least only had to do it once, rather than implementing the same functionality for arguments and for input-type fields. It was still quite a bit of code; I didn't try to be quite as completionist about the tests as with unmarshal but still had to add a few. Issue: https://github.com/Khan/genqlient/issues/38 ## Test plan: make check Author: benjaminjkraft Reviewers: StevenACoffman, dnerdy, benjaminjkraft, aberkan, jvoll, mahtabsabet, MiguelCastillo Required Reviewers: Approved By: StevenACoffman, dnerdy Checks: ✅ Test (1.17), ✅ Test (1.16), ✅ Test (1.15), ✅ Test (1.14), ✅ Lint, ✅ Test (1.17), ✅ Test (1.16), ✅ Test (1.15), ✅ Test (1.14), ✅ Lint Pull Request URL: https://github.com/Khan/genqlient/pull/104
195 lines
6.0 KiB
Go
195 lines
6.0 KiB
Go
package test
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// Code generated by github.com/Khan/genqlient, DO NOT EDIT.
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import (
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"encoding/json"
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"fmt"
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"github.com/Khan/genqlient/graphql"
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"github.com/Khan/genqlient/internal/testutil"
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)
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// SimpleInlineFragmentRandomItemArticle includes the requested fields of the GraphQL type Article.
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type SimpleInlineFragmentRandomItemArticle struct {
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Typename string `json:"__typename"`
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// ID is the identifier of the content.
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Id testutil.ID `json:"id"`
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Name string `json:"name"`
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Text string `json:"text"`
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}
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// SimpleInlineFragmentRandomItemContent includes the requested fields of the GraphQL interface Content.
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//
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// SimpleInlineFragmentRandomItemContent is implemented by the following types:
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// SimpleInlineFragmentRandomItemArticle
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// SimpleInlineFragmentRandomItemVideo
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// SimpleInlineFragmentRandomItemTopic
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// The GraphQL type's documentation follows.
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//
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// Content is implemented by various types like Article, Video, and Topic.
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type SimpleInlineFragmentRandomItemContent interface {
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implementsGraphQLInterfaceSimpleInlineFragmentRandomItemContent()
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// GetTypename returns the receiver's concrete GraphQL type-name (see interface doc for possible values).
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GetTypename() string
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// GetId returns the interface-field "id" from its implementation.
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// The GraphQL interface field's documentation follows.
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//
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// ID is the identifier of the content.
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GetId() testutil.ID
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// GetName returns the interface-field "name" from its implementation.
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GetName() string
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}
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func (v *SimpleInlineFragmentRandomItemArticle) implementsGraphQLInterfaceSimpleInlineFragmentRandomItemContent() {
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}
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// GetTypename is a part of, and documented with, the interface SimpleInlineFragmentRandomItemContent.
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func (v *SimpleInlineFragmentRandomItemArticle) GetTypename() string { return v.Typename }
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// GetId is a part of, and documented with, the interface SimpleInlineFragmentRandomItemContent.
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func (v *SimpleInlineFragmentRandomItemArticle) GetId() testutil.ID { return v.Id }
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// GetName is a part of, and documented with, the interface SimpleInlineFragmentRandomItemContent.
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func (v *SimpleInlineFragmentRandomItemArticle) GetName() string { return v.Name }
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func (v *SimpleInlineFragmentRandomItemVideo) implementsGraphQLInterfaceSimpleInlineFragmentRandomItemContent() {
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}
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// GetTypename is a part of, and documented with, the interface SimpleInlineFragmentRandomItemContent.
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func (v *SimpleInlineFragmentRandomItemVideo) GetTypename() string { return v.Typename }
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// GetId is a part of, and documented with, the interface SimpleInlineFragmentRandomItemContent.
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func (v *SimpleInlineFragmentRandomItemVideo) GetId() testutil.ID { return v.Id }
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// GetName is a part of, and documented with, the interface SimpleInlineFragmentRandomItemContent.
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func (v *SimpleInlineFragmentRandomItemVideo) GetName() string { return v.Name }
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func (v *SimpleInlineFragmentRandomItemTopic) implementsGraphQLInterfaceSimpleInlineFragmentRandomItemContent() {
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}
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// GetTypename is a part of, and documented with, the interface SimpleInlineFragmentRandomItemContent.
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func (v *SimpleInlineFragmentRandomItemTopic) GetTypename() string { return v.Typename }
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// GetId is a part of, and documented with, the interface SimpleInlineFragmentRandomItemContent.
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func (v *SimpleInlineFragmentRandomItemTopic) GetId() testutil.ID { return v.Id }
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// GetName is a part of, and documented with, the interface SimpleInlineFragmentRandomItemContent.
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func (v *SimpleInlineFragmentRandomItemTopic) GetName() string { return v.Name }
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func __unmarshalSimpleInlineFragmentRandomItemContent(b []byte, v *SimpleInlineFragmentRandomItemContent) error {
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if string(b) == "null" {
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return nil
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}
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var tn struct {
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TypeName string `json:"__typename"`
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}
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err := json.Unmarshal(b, &tn)
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if err != nil {
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return err
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}
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switch tn.TypeName {
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case "Article":
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*v = new(SimpleInlineFragmentRandomItemArticle)
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return json.Unmarshal(b, *v)
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case "Video":
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*v = new(SimpleInlineFragmentRandomItemVideo)
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return json.Unmarshal(b, *v)
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case "Topic":
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*v = new(SimpleInlineFragmentRandomItemTopic)
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return json.Unmarshal(b, *v)
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case "":
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return fmt.Errorf(
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"Response was missing Content.__typename")
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default:
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return fmt.Errorf(
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`Unexpected concrete type for SimpleInlineFragmentRandomItemContent: "%v"`, tn.TypeName)
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}
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}
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// SimpleInlineFragmentRandomItemTopic includes the requested fields of the GraphQL type Topic.
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type SimpleInlineFragmentRandomItemTopic struct {
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Typename string `json:"__typename"`
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// ID is the identifier of the content.
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Id testutil.ID `json:"id"`
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Name string `json:"name"`
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}
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// SimpleInlineFragmentRandomItemVideo includes the requested fields of the GraphQL type Video.
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type SimpleInlineFragmentRandomItemVideo struct {
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Typename string `json:"__typename"`
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// ID is the identifier of the content.
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Id testutil.ID `json:"id"`
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Name string `json:"name"`
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Duration int `json:"duration"`
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}
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// SimpleInlineFragmentResponse is returned by SimpleInlineFragment on success.
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type SimpleInlineFragmentResponse struct {
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RandomItem SimpleInlineFragmentRandomItemContent `json:"-"`
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}
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func (v *SimpleInlineFragmentResponse) UnmarshalJSON(b []byte) error {
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if string(b) == "null" {
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return nil
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}
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var firstPass struct {
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*SimpleInlineFragmentResponse
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RandomItem json.RawMessage `json:"randomItem"`
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graphql.NoUnmarshalJSON
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}
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firstPass.SimpleInlineFragmentResponse = v
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err := json.Unmarshal(b, &firstPass)
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if err != nil {
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return err
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}
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{
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dst := &v.RandomItem
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src := firstPass.RandomItem
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err = __unmarshalSimpleInlineFragmentRandomItemContent(
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src, dst)
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if err != nil {
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return fmt.Errorf(
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"Unable to unmarshal SimpleInlineFragmentResponse.RandomItem: %w", err)
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}
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}
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return nil
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}
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func SimpleInlineFragment(
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client graphql.Client,
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) (*SimpleInlineFragmentResponse, error) {
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var err error
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var retval SimpleInlineFragmentResponse
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err = client.MakeRequest(
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nil,
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"SimpleInlineFragment",
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`
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query SimpleInlineFragment {
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randomItem {
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__typename
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id
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name
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... on Article {
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text
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}
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... on Video {
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duration
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}
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}
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}
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`,
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&retval,
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nil,
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)
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return &retval, err
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}
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