isArray and isIterable should be done after checking customTypeSchema. (5.2.x)

gradle.properties

@@ -1,4 +1,4 @@
-projectVersion=.5.2.0
+projectVersion=5.2.0
 projectGroup=io.micronaut.openapi
 micronautDocsVersion=2.0.0
 groovyVersion=4.0.15

openapi/openapi-custom-schema-for-iterable-class.properties

@@ -0,0 +1 @@
+micronaut.openapi.schema.io.micronaut.data.model.Page=io.micronaut.openapi.SwaggerPage

openapi/src/main/java/io/micronaut/openapi/visitor/AbstractOpenApiVisitor.java

@@ -854,19 +854,19 @@ protected Schema<?> resolveSchema(OpenAPI openAPI, @Nullable Element definingEle
 
             if (type != null) {
 
+                String typeName = type.getName();
+                ClassElement customTypeSchema = getCustomSchema(typeName, typeArgs, context);
+                if (customTypeSchema != null) {
+                    type = customTypeSchema;
+                }
+
                 if (isArray == null) {
                     isArray = type.isArray();
                 }
                 if (isIterable == null) {
                     isIterable = type.isIterable();
                 }
 
-                String typeName = type.getName();
-                ClassElement customTypeSchema = getCustomSchema(typeName, typeArgs, context);
-                if (customTypeSchema != null) {
-                    type = customTypeSchema;
-                }
-
                 // File upload case
                 if (isFileUpload(type)) {
                     isPublisher = isPublisher && !"io.micronaut.http.multipart.PartData".equals(typeName);

openapi/src/main/java/io/micronaut/openapi/visitor/SchemaUtils.java

@@ -326,7 +326,7 @@ public static Operation mergeOperations(Operation op1, Operation op2) {
                 Parameter existedParameter = null;
                 int i = 0;
                 for (Parameter p1 : op1.getParameters()) {
-                    if (p1.getName().equals(p2.getName())
+                    if (Objects.equals(p1.getName(), p2.getName())
                         && Objects.equals(p1.getIn(), p2.getIn())) {
                         existedParameter = p1;
                         break;

openapi/src/test/groovy/io/micronaut/openapi/SwaggerPage.java

@@ -0,0 +1,9 @@
+package io.micronaut.openapi;
+
+import java.util.List;
+
+public class SwaggerPage<T> {
+
+    public List<T> content;
+    public int num;
+}

openapi/src/test/groovy/io/micronaut/openapi/visitor/OpenapiCustomSchemaSpec.groovy

@@ -282,4 +282,50 @@ class MyBean {}
         System.clearProperty(OpenApiConfigProperty.MICRONAUT_CONFIG_FILE_LOCATIONS)
         System.clearProperty(Environment.ENVIRONMENTS_PROPERTY)
     }
+
+    void "test custom OpenAPI schema for iterable class"() {
+        given:
+        System.setProperty(OpenApiConfigProperty.MICRONAUT_OPENAPI_CONFIG_FILE, "openapi-custom-schema-for-iterable-class.properties")
+
+        when:
+        buildBeanDefinition('test.MyBean', '''
+package test;
+
+import io.micronaut.data.model.Page;
+import io.micronaut.http.annotation.Controller;
+import io.micronaut.http.annotation.Get;
+
+@Controller
+class OpenApiController {
+
+    @Get("{?pageable*}")
+    public Page<String> processSync() {
+        return null;
+    }
+}
+
+@jakarta.inject.Singleton
+class MyBean {}
+''')
+        then:
+        Utils.testReference != null
+
+        when:
+        OpenAPI openAPI = Utils.testReference
+        Schema swaggerPageSchema = openAPI.components.schemas.'SwaggerPage_String_'
+
+        then:
+
+        swaggerPageSchema
+        swaggerPageSchema.type == 'object'
+        swaggerPageSchema.properties.content
+        swaggerPageSchema.properties.content.type == 'array'
+        swaggerPageSchema.properties.content.items.type == 'object'
+        swaggerPageSchema.properties.num
+        swaggerPageSchema.properties.num.type == 'integer'
+        swaggerPageSchema.properties.num.format == 'int32'
+
+        cleanup:
+        System.clearProperty(OpenApiConfigProperty.MICRONAUT_CONFIG_FILE_LOCATIONS)
+    }
 }