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[Java] add missing nullable judgement when required property is true #18518

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[Java] add missing nullable judgement when required property is true #18518

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f6d9a7c
[Java] add missing nullable judgement when required property is true
fanqiewanzi Apr 27, 2024
f33a47a
[Java] add okhttp template test and regenerate sample
fanqiewanzi Apr 27, 2024
f240c93
[Java] add tests when field is nullable and required
fanqiewanzi May 20, 2024
ec027a3
[Java] regenerate samples to fix pipeline error
fanqiewanzi May 20, 2024
42a572b
[Java] add JSONTest fro RequiredNullableBody class
fanqiewanzi Jun 1, 2024
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22 changes: 20 additions & 2 deletions modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson/pojo.mustache
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Expand Up @@ -398,7 +398,7 @@ public class {{classname}} {{#parent}}extends {{{.}}} {{/parent}}{{#vendorExtens
{{#items.isModel}}
{{#required}}
// ensure the json data is an array
if (!jsonObj.get("{{{baseName}}}").isJsonArray()) {
if (!jsonObj.get("{{{baseName}}}").isJsonArray(){{#isNullable}} && !jsonObj.get("{{baseName}}").isJsonNull(){{/isNullable}}) {
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thanks for the fix and the test.

shall the new condition {{#isNullable}} && !jsonObj.get("{{baseName}}").isJsonNull(){{/isNullable}} be put in its own code block instead of adding to the JSON array type check as the error message right below only mentions expecting the field to be an array?

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thanks for the fix and the test.

shall the new condition {{#isNullable}} && !jsonObj.get("{{baseName}}").isJsonNull(){{/isNullable}} be put in its own code block instead of adding to the JSON array type check as the error message right below only mentions expecting the field to be an array?

Hi, I don't quite understand. It doesn't seem to make sense to bring up the nullable judgment alone, because nullable is just an auxiliary judgment. If we put in its own code block, the nullable judgment is set outside the original judgment. From the code point of view, the logic is the same. If you write a judgment to nullable alone to throw an exception, the whole logic will seem even more strange.

     {{^isNullable}}
      if (jsonObj.get("{{baseName}}").isJsonNull()) {
        // throw exception here 
      }
      {{/isNullable}}
      // we will get an exception in the next judgement if json element is null
      // ensure the json data is an array
      if (!jsonObj.get("{{{baseName}}}").isJsonArray()) {
        throw new IllegalArgumentException(String.format("Expected the field `{{{baseName}}}` to be an array in the JSON string but got `%s`", jsonObj.get("{{{baseName}}}").toString()));
      }

Or this is the change you want.

{{#isNullable}} 
if  (!jsonObj.get("{{baseName}}").isJsonNull()) {
  // ensure the json data is an array
        if (!jsonObj.get("{{{baseName}}}").isJsonArray()) {
          throw new IllegalArgumentException(String.format("Expected the field `{{{baseName}}}` to be an array in the JSON string but got `%s`", jsonObj.get("{{{baseName}}}").toString()));
        }
}
{{/isNullable}}

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can you please PM me via Slack when you've time?

https://join.slack.com/t/openapi-generator/shared_invite/zt-12jxxd7p2-XUeQM~4pzsU9x~eGLQqX2g

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ok👌

throw new IllegalArgumentException(String.format("Expected the field `{{{baseName}}}` to be an array in the JSON string but got `%s`", jsonObj.get("{{{baseName}}}").toString()));
}

Expand Down Expand Up @@ -436,7 +436,7 @@ public class {{classname}} {{#parent}}extends {{{.}}} {{/parent}}{{#vendorExtens
// ensure the required json array is present
if (jsonObj.get("{{{baseName}}}") == null) {
throw new IllegalArgumentException("Expected the field `linkedContent` to be an array in the JSON string but got `null`");
} else if (!jsonObj.get("{{{baseName}}}").isJsonArray()) {
} else if (!jsonObj.get("{{{baseName}}}").isJsonArray(){{#isNullable}} && !jsonObj.get("{{baseName}}").isJsonNull(){{/isNullable}}) {
throw new IllegalArgumentException(String.format("Expected the field `{{{baseName}}}` to be an array in the JSON string but got `%s`", jsonObj.get("{{{baseName}}}").toString()));
}
{{/required}}
Expand All @@ -450,8 +450,14 @@ public class {{classname}} {{#parent}}extends {{{.}}} {{/parent}}{{#vendorExtens
{{/isString}}
{{#isModel}}
{{#required}}
{{#isNullable}}
if (jsonObj.get("{{{baseName}}}") != null && !jsonObj.get("{{{baseName}}}").isJsonNull()) {
{{/isNullable}}
// validate the required field `{{{baseName}}}`
{{{dataType}}}.validateJsonElement(jsonObj.get("{{{baseName}}}"));
{{#isNullable}}
}
{{/isNullable}}
{{/required}}
{{^required}}
// validate the optional field `{{{baseName}}}`
Expand All @@ -462,8 +468,14 @@ public class {{classname}} {{#parent}}extends {{{.}}} {{/parent}}{{#vendorExtens
{{/isModel}}
{{#isEnum}}
{{#required}}
{{#isNullable}}
if (jsonObj.get("{{{baseName}}}") != null && !jsonObj.get("{{{baseName}}}").isJsonNull()) {
{{/isNullable}}
// validate the required field `{{{baseName}}}`
{{{datatypeWithEnum}}}.validateJsonElement(jsonObj.get("{{{baseName}}}"));
{{#isNullable}}
}
{{/isNullable}}
{{/required}}
{{^required}}
// validate the optional field `{{{baseName}}}`
Expand All @@ -474,8 +486,14 @@ public class {{classname}} {{#parent}}extends {{{.}}} {{/parent}}{{#vendorExtens
{{/isEnum}}
{{#isEnumRef}}
{{#required}}
{{#isNullable}}
if (jsonObj.get("{{{baseName}}}") != null && !jsonObj.get("{{{baseName}}}").isJsonNull()) {
{{/isNullable}}
// validate the required field `{{{baseName}}}`
{{{dataType}}}.validateJsonElement(jsonObj.get("{{{baseName}}}"));
{{#isNullable}}
}
{{/isNullable}}
{{/required}}
{{^required}}
// validate the optional field `{{{baseName}}}`
Expand Down
27 changes: 27 additions & 0 deletions .../openapi-generator/src/test/java/org/openapitools/codegen/java/JavaClientCodegenTest.java
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Expand Up @@ -2676,4 +2676,31 @@ static private Path newTempFolder() {
throw new RuntimeException(e);
}
}

@Test public void testRequiredAndNullableAreBothTrue() throws IOException {
File output = Files.createTempDirectory("test").toFile();
output.deleteOnExit();

final CodegenConfigurator configurator = new CodegenConfigurator()
.setGeneratorName("java")
.setLibrary(JavaClientCodegen.OKHTTP_GSON)
.setInputSpec("src/test/resources/bugs/issue_18516.yaml")
.setOutputDir(output.getAbsolutePath().replace("\\", "/"));


DefaultGenerator generator = new DefaultGenerator();
List<File> files = generator.opts(configurator.toClientOptInput()).generate();
files.forEach(File::deleteOnExit);

validateJavaSourceFiles(files);

Path modelFile = Paths.get(output + "/src/main/java/org/openapitools/client/model/SomeObject.java");
TestUtils.assertFileContains(
modelFile,
"} else if (!jsonObj.get(\"ids\").isJsonArray() && !jsonObj.get(\"ids\").isJsonNull()) {",
"if (!jsonObj.get(\"users\").isJsonArray() && !jsonObj.get(\"users\").isJsonNull()) {",
"if (jsonObj.get(\"user\") != null && !jsonObj.get(\"user\").isJsonNull()) {",
"if (jsonObj.get(\"role\") != null && !jsonObj.get(\"role\").isJsonNull()) {",
"if (jsonObj.get(\"custom\") != null && !jsonObj.get(\"custom\").isJsonNull()) {");
}
}
45 changes: 45 additions & 0 deletions .../test/resources/3_0/java/petstore-with-fake-endpoints-models-for-testing-okhttp-gson.yaml
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Expand Up @@ -1382,6 +1382,19 @@ paths:
$ref: '#/components/schemas/Variable'
'400':
description: Invalid Value
/fake/required-nullable-body:
get:
tags:
- fake
summary: fields in the response body, required and nullable are both true
description: ''
responses:
'200':
description: success
content:
application/json:
schema:
$ref: '#/components/schemas/RequiredNullableBody'
servers:
- url: 'http://{server}.swagger.io:{port}/v2'
description: petstore server
Expand Down Expand Up @@ -2748,3 +2761,35 @@ components:
$ref: '#/components/schemas/ArrayOneOf'
anyof_prop:
$ref: '#/components/schemas/ArrayAnyOf'
NullableEnum:
type: string
nullable: true
enum:
- custom
RequiredNullableBody:
allOf:
- $ref: '#/components/schemas/NullableClass'
- type: object
required:
- custom_ref_enum
- custom_enum
- integer_prop
- number_prop
- boolean_prop
- string_prop
- date_prop
- datetime_prop
- array_nullable_prop
- array_and_items_nullable_prop
- array_items_nullable
- object_nullable_prop
- object_and_items_nullable_prop
- object_items_nullable
properties:
custom_ref_enum:
$ref: "#/components/schemas/NullableEnum"
custom_enum:
type: string
nullable: true
enum:
- custom
61 changes: 61 additions & 0 deletions modules/openapi-generator/src/test/resources/bugs/issue_18516.yaml
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@@ -0,0 +1,61 @@
openapi: 3.0.3
info:
title: test
description: Test API
version: 1.0.1

paths:
/test:
get:
responses:
200:
description: Valid response
content:
application/json:
schema:
$ref: "#/components/schemas/SomeObject"

components:
schemas:
SomeObject:
type: object
required:
- ids
- users
- user
- role
- custom
properties:
ids:
type: array
nullable: true
items:
type: integer
users:
type: array
nullable: true
items:
type: object
properties:
id:
type: string
user:
type: object
nullable: true
properties:
id:
type: string
role:
type: string
nullable: true
enum:
- admin
- tenant
custom:
$ref: "#/components/schemas/customEnum"
customEnum:
type: string
nullable: true
enum:
- custom

2 changes: 1 addition & 1 deletion ...e-required/src/main/java/org/openapitools/client/model/PetWithRequiredNullableCases1.java
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Expand Up @@ -427,7 +427,7 @@ public static void validateJsonElement(JsonElement jsonElement) throws IOExcepti
// ensure the required json array is present
if (jsonObj.get("photoUrls") == null) {
throw new IllegalArgumentException("Expected the field `linkedContent` to be an array in the JSON string but got `null`");
} else if (!jsonObj.get("photoUrls").isJsonArray()) {
} else if (!jsonObj.get("photoUrls").isJsonArray() && !jsonObj.get("photoUrls").isJsonNull()) {
throw new IllegalArgumentException(String.format("Expected the field `photoUrls` to be an array in the JSON string but got `%s`", jsonObj.get("photoUrls").toString()));
}
if (jsonObj.get("tags") != null && !jsonObj.get("tags").isJsonNull()) {
Expand Down
4 changes: 4 additions & 0 deletions samples/client/petstore/java/okhttp-gson/.openapi-generator/FILES
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Expand Up @@ -73,6 +73,7 @@ docs/NewPet.md
docs/NewPetCategoryInlineAllof.md
docs/NewPetCategoryInlineAllofAllOfCategoryTag.md
docs/NullableClass.md
docs/NullableEnum.md
docs/NullableShape.md
docs/NumberOnly.md
docs/ObjectWithDeprecatedFields.md
Expand All @@ -94,6 +95,7 @@ docs/PropertyNameCollision.md
docs/Quadrilateral.md
docs/QuadrilateralInterface.md
docs/ReadOnlyFirst.md
docs/RequiredNullableBody.md
docs/Scalar.md
docs/ScalarAnyOf.md
docs/ScaleneTriangle.md
Expand Down Expand Up @@ -216,6 +218,7 @@ src/main/java/org/openapitools/client/model/NewPet.java
src/main/java/org/openapitools/client/model/NewPetCategoryInlineAllof.java
src/main/java/org/openapitools/client/model/NewPetCategoryInlineAllofAllOfCategoryTag.java
src/main/java/org/openapitools/client/model/NullableClass.java
src/main/java/org/openapitools/client/model/NullableEnum.java
src/main/java/org/openapitools/client/model/NullableShape.java
src/main/java/org/openapitools/client/model/NumberOnly.java
src/main/java/org/openapitools/client/model/ObjectWithDeprecatedFields.java
Expand All @@ -236,6 +239,7 @@ src/main/java/org/openapitools/client/model/PropertyNameCollision.java
src/main/java/org/openapitools/client/model/Quadrilateral.java
src/main/java/org/openapitools/client/model/QuadrilateralInterface.java
src/main/java/org/openapitools/client/model/ReadOnlyFirst.java
src/main/java/org/openapitools/client/model/RequiredNullableBody.java
src/main/java/org/openapitools/client/model/Scalar.java
src/main/java/org/openapitools/client/model/ScalarAnyOf.java
src/main/java/org/openapitools/client/model/ScaleneTriangle.java
Expand Down
3 changes: 3 additions & 0 deletions samples/client/petstore/java/okhttp-gson/README.md
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Expand Up @@ -126,6 +126,7 @@ Class | Method | HTTP request | Description
*FakeApi* | [**fakeOuterCompositeSerialize**](docs/FakeApi.md#fakeOuterCompositeSerialize) | **POST** /fake/outer/composite |
*FakeApi* | [**fakeOuterNumberSerialize**](docs/FakeApi.md#fakeOuterNumberSerialize) | **POST** /fake/outer/number |
*FakeApi* | [**fakeOuterStringSerialize**](docs/FakeApi.md#fakeOuterStringSerialize) | **POST** /fake/outer/string |
*FakeApi* | [**fakeRequiredNullableBodyGet**](docs/FakeApi.md#fakeRequiredNullableBodyGet) | **GET** /fake/required-nullable-body | fields in the response body, required and nullable are both true
*FakeApi* | [**fakeUploadRefRequestBodies**](docs/FakeApi.md#fakeUploadRefRequestBodies) | **POST** /fake/pet/{petId}/uploadImage | fake uploads an image with ref request bodies
*FakeApi* | [**getFakeArrayofenums**](docs/FakeApi.md#getFakeArrayofenums) | **GET** /fake/array-of-enums | Array of Enums
*FakeApi* | [**getFakeHealth**](docs/FakeApi.md#getFakeHealth) | **GET** /fake/health | Health check endpoint
Expand Down Expand Up @@ -233,6 +234,7 @@ Class | Method | HTTP request | Description
- [NewPetCategoryInlineAllof](docs/NewPetCategoryInlineAllof.md)
- [NewPetCategoryInlineAllofAllOfCategoryTag](docs/NewPetCategoryInlineAllofAllOfCategoryTag.md)
- [NullableClass](docs/NullableClass.md)
- [NullableEnum](docs/NullableEnum.md)
- [NullableShape](docs/NullableShape.md)
- [NumberOnly](docs/NumberOnly.md)
- [ObjectWithDeprecatedFields](docs/ObjectWithDeprecatedFields.md)
Expand All @@ -253,6 +255,7 @@ Class | Method | HTTP request | Description
- [Quadrilateral](docs/Quadrilateral.md)
- [QuadrilateralInterface](docs/QuadrilateralInterface.md)
- [ReadOnlyFirst](docs/ReadOnlyFirst.md)
- [RequiredNullableBody](docs/RequiredNullableBody.md)
- [Scalar](docs/Scalar.md)
- [ScalarAnyOf](docs/ScalarAnyOf.md)
- [ScaleneTriangle](docs/ScaleneTriangle.md)
Expand Down
71 changes: 71 additions & 0 deletions samples/client/petstore/java/okhttp-gson/api/openapi.yaml
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Expand Up @@ -1479,6 +1479,21 @@ paths:
x-internal: true
x-accepts:
- application/json
/fake/required-nullable-body:
get:
description: ""
responses:
"200":
content:
application/json:
schema:
$ref: '#/components/schemas/RequiredNullableBody'
description: success
summary: "fields in the response body, required and nullable are both true"
tags:
- fake
x-accepts:
- application/json
components:
requestBodies:
upload_body:
Expand Down Expand Up @@ -2778,6 +2793,62 @@ components:
anyof_prop:
$ref: '#/components/schemas/ArrayAnyOf'
type: object
NullableEnum:
enum:
- custom
nullable: true
type: string
RequiredNullableBody:
allOf:
- $ref: '#/components/schemas/NullableClass'
- properties:
custom_ref_enum:
$ref: '#/components/schemas/NullableEnum'
custom_enum:
enum:
- custom
nullable: true
type: string
required:
- array_and_items_nullable_prop
- array_items_nullable
- array_nullable_prop
- boolean_prop
- custom_enum
- custom_ref_enum
- date_prop
- datetime_prop
- integer_prop
- number_prop
- object_and_items_nullable_prop
- object_items_nullable
- object_nullable_prop
- string_prop
type: object
example:
number_prop: 6.027456183070403
datetime_prop: 2000-01-23T04:56:07.000+00:00
custom_ref_enum: custom
boolean_prop: true
string_prop: string_prop
array_nullable_prop:
- "{}"
- "{}"
custom_enum: custom
integer_prop: 0
array_and_items_nullable_prop:
- "{}"
- "{}"
object_items_nullable:
key: "{}"
object_nullable_prop:
key: "{}"
object_and_items_nullable_prop:
key: "{}"
date_prop: 2000-01-23
array_items_nullable:
- "{}"
- "{}"
_foo_get_default_response:
example:
string:
Expand Down
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