Visitar URL original
fix: null reference exception for boolean component schemas by baywet · Pull Request #2839 · microsoft/OpenAPI.NET · GitHub
Skip to content

fix: null reference exception for boolean component schemas #2839

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
Vincent Biret (baywet) merged 9 commits into from
Apr 27, 2026
Merged

fix: null reference exception for boolean component schemas #2839

Show file tree
Hide file tree
Changes from 1 commit
Commits
Show all changes
9 commits
Select commit Hold shift + click to select a range
fe0b50a
fix: null reference exception for boolean component schemas
baywet Apr 27, 2026
b6c1fe8
test(schema): validate empty schema serialization across all OpenAPI …
baywet Apr 27, 2026
b9b9b75
test(schema): add deserialization tests for empty and boolean schemas
baywet Apr 27, 2026
7d43b15
test(schema): validate false schema deserializes to not with empty ob…
baywet Apr 27, 2026
15c1305
tests: pass serialization format to disambiguate
baywet Apr 27, 2026
05b44be
fix(schema): support boolean schemas in deserializer for OpenAPI 3.1/3.2
baywet Apr 27, 2026
509f332
docs(schema): document boolean schema serialization and deserialization
baywet Apr 27, 2026
7316e3f
perf(schema): optimize boolean schema deserialization
baywet Apr 27, 2026
a54c0fd
test(schema): rename deserialization test for clarity
baywet Apr 27, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Prev Previous commit
Next Next commit
fix(schema): support boolean schemas in deserializer for OpenAPI 3.1/3.2 
Implement special handling for JSON Schema 2020-12 boolean schemas:
- true: deserializes to empty schema (allows any value)
- false: deserializes to schema with not: {} (disallows any value)

This enables proper support for boolean schemas as defined in the OpenAPI 3.1
and 3.2 specifications, which adopt JSON Schema 2020-12.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
  • Loading branch information
@baywet
baywet and Copilot committed Apr 27, 2026
commit 05b44beb9783f5bab1d8988b3cb916d0278d42ce
17 changes: 17 additions & 0 deletions src/Microsoft.OpenApi/Reader/V31/OpenApiSchemaDeserializer.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -362,6 +362,23 @@ internal static partial class OpenApiV31Deserializer

public static IOpenApiSchema LoadSchema(ParseNode node, OpenApiDocument hostDocument)
{
// Handle boolean schemas (true/false) for JSON Schema 2020-12 compatibility
if (node is ValueNode valueNode)
{
var value = valueNode.GetScalarValue();
if (value != null && bool.TryParse(value, out var boolValue))
{
var boolSchema = new OpenApiSchema();
if (!boolValue)
{
// false schema: represents "not valid" -> convert to "not: {}"
boolSchema.Not = new OpenApiSchema();
}
// true schema: represents "always valid" -> return empty schema (default)
return boolSchema;
}
}

var mapNode = node.CheckMapNode(OpenApiConstants.Schema);

var pointer = mapNode.GetReferencePointer();
Expand Down
17 changes: 17 additions & 0 deletions src/Microsoft.OpenApi/Reader/V32/OpenApiSchemaDeserializer.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -362,6 +362,23 @@ internal static partial class OpenApiV32Deserializer

public static IOpenApiSchema LoadSchema(ParseNode node, OpenApiDocument hostDocument)
{
// Handle boolean schemas (true/false) for JSON Schema 2020-12 compatibility
if (node is ValueNode valueNode)
{
var value = valueNode.GetScalarValue();
if (value != null && bool.TryParse(value, out var boolValue))
{
var boolSchema = new OpenApiSchema();
if (!boolValue)
{
// false schema: represents "not valid" -> convert to "not: {}"
boolSchema.Not = new OpenApiSchema();
}
// true schema: represents "always valid" -> return empty schema (default)
return boolSchema;
}
}

var mapNode = node.CheckMapNode(OpenApiConstants.Schema);

var pointer = mapNode.GetReferencePointer();
Expand Down