go.model_oneof.mustache Maven / Gradle / Ivy
// {{classname}} - {{{description}}}{{^description}}struct for {{{classname}}}{{/description}}
type {{classname}} struct {
{{#oneOf}}
{{{.}}} *{{{.}}}
{{/oneOf}}
}
{{#oneOf}}
// {{{.}}}As{{classname}} is a convenience function that returns {{{.}}} wrapped in {{classname}}
func {{{.}}}As{{classname}}(v *{{{.}}}) {{classname}} {
return {{classname}}{ {{{.}}}: v}
}
{{/oneOf}}
// Unmarshal JSON data into one of the pointers in the struct
func (dst *{{classname}}) UnmarshalJSON(data []byte) error {
var err error
{{#isNullable}}
// this object is nullable so check if the payload is null or empty string
if string(data) == "" || string(data) == "{}" {
return nil
}
{{/isNullable}}
{{#useOneOfDiscriminatorLookup}}
{{#discriminator}}
{{#mappedModels}}
{{#-first}}
// use discriminator value to speed up the lookup
var jsonDict map[string]interface{}
err = json.Unmarshal(data, &jsonDict)
if err != nil {
return fmt.Errorf("Failed to unmarshal JSON into map for the discriminator lookup.")
}
{{/-first}}
// check if the discriminator value is '{{{mappingName}}}'
if jsonDict["{{{propertyBaseName}}}"] == "{{{mappingName}}}" {
// try to unmarshal JSON data into {{{modelName}}}
err = json.Unmarshal(data, &dst.{{{modelName}}})
if err == nil {
return nil // data stored in dst.{{{modelName}}}, return on the first match
} else {
dst.{{{modelName}}} = nil
return fmt.Errorf("Failed to unmarshal {{classname}} as {{{modelName}}}: %s", err.Error())
}
}
{{/mappedModels}}
{{/discriminator}}
return nil
{{/useOneOfDiscriminatorLookup}}
{{^useOneOfDiscriminatorLookup}}
match := 0
{{#oneOf}}
// try to unmarshal data into {{{.}}}
err = json.Unmarshal(data, &dst.{{{.}}})
if err == nil {
json{{{.}}}, _ := json.Marshal(dst.{{{.}}})
if string(json{{{.}}}) == "{}" { // empty struct
dst.{{{.}}} = nil
} else {
match++
}
} else {
dst.{{{.}}} = nil
}
{{/oneOf}}
if match > 1 { // more than 1 match
// reset to nil
{{#oneOf}}
dst.{{{.}}} = nil
{{/oneOf}}
return fmt.Errorf("Data matches more than one schema in oneOf({{classname}})")
} else if match == 1 {
return nil // exactly one match
} else { // no match
return fmt.Errorf("Data failed to match schemas in oneOf({{classname}})")
}
{{/useOneOfDiscriminatorLookup}}
}
// Marshal data from the first non-nil pointers in the struct to JSON
func (src {{classname}}) MarshalJSON() ([]byte, error) {
{{#oneOf}}
if src.{{{.}}} != nil {
return json.Marshal(&src.{{{.}}})
}
{{/oneOf}}
return nil, nil // no data in oneOf schemas
}
// Get the actual instance
func (obj *{{classname}}) GetActualInstance() (interface{}) {
{{#oneOf}}
if obj.{{{.}}} != nil {
return obj.{{{.}}}
}
{{/oneOf}}
// all schemas are nil
return nil
}
{{>nullable_model}}