From eedf0ff4eaaefcdef6a8c9d3115cd0e1157fa3df Mon Sep 17 00:00:00 2001
From: unkish <3533269+unkish@users.noreply.github.com>
Date: Thu, 29 Dec 2022 21:50:29 +0200
Subject: [PATCH] Use generated item type for array item if it is present

Closes #1376
---
 .../java/org/jsonschema2pojo/SchemaMapper.java  |  2 --
 .../org/jsonschema2pojo/rules/ArrayRule.java    |  8 ++++++--
 .../integration/ref/SelfRefIT.java              | 17 ++++++++++++++---
 .../schema/ref/selfReferencingArrayItem.json    | 12 ++++++++++++
 4 files changed, 32 insertions(+), 7 deletions(-)
 create mode 100644 jsonschema2pojo-integration-tests/src/test/resources/schema/ref/selfReferencingArrayItem.json

diff --git a/jsonschema2pojo-core/src/main/java/org/jsonschema2pojo/SchemaMapper.java b/jsonschema2pojo-core/src/main/java/org/jsonschema2pojo/SchemaMapper.java
index 4cf1d91d3..03522363e 100644
--- a/jsonschema2pojo-core/src/main/java/org/jsonschema2pojo/SchemaMapper.java
+++ b/jsonschema2pojo-core/src/main/java/org/jsonschema2pojo/SchemaMapper.java
@@ -80,8 +80,6 @@ public SchemaMapper() {
      * @param schemaUrl
      *            location of the schema to be used as input
      * @return The top-most type generated from the given file
-     * @throws IOException
-     *             if the schema content cannot be read
      */
     public JType generate(JCodeModel codeModel, String className, String packageName, URL schemaUrl) {
 
diff --git a/jsonschema2pojo-core/src/main/java/org/jsonschema2pojo/rules/ArrayRule.java b/jsonschema2pojo-core/src/main/java/org/jsonschema2pojo/rules/ArrayRule.java
index 1915fc5df..d83b64014 100644
--- a/jsonschema2pojo-core/src/main/java/org/jsonschema2pojo/rules/ArrayRule.java
+++ b/jsonschema2pojo-core/src/main/java/org/jsonschema2pojo/rules/ArrayRule.java
@@ -88,8 +88,12 @@ public JClass apply(String nodeName, JsonNode node, JsonNode parent, JPackage jp
                 pathToItems = "#" + schema.getId().getFragment() + "/items";
             }
             Schema itemsSchema = ruleFactory.getSchemaStore().create(schema, pathToItems, ruleFactory.getGenerationConfig().getRefFragmentPathDelimiters());
-            itemType = ruleFactory.getSchemaRule().apply(makeSingular(nodeName), node.get("items"), node, jpackage, itemsSchema);
-            itemsSchema.setJavaTypeIfEmpty(itemType);
+            if (itemsSchema.isGenerated()) {
+                itemType = itemsSchema.getJavaType();
+            } else {
+                itemType = ruleFactory.getSchemaRule().apply(makeSingular(nodeName), node.get("items"), node, jpackage, itemsSchema);
+                itemsSchema.setJavaTypeIfEmpty(itemType);
+            }
         } else {
             itemType = jpackage.owner().ref(Object.class);
         }
diff --git a/jsonschema2pojo-integration-tests/src/test/java/org/jsonschema2pojo/integration/ref/SelfRefIT.java b/jsonschema2pojo-integration-tests/src/test/java/org/jsonschema2pojo/integration/ref/SelfRefIT.java
index f66b2d09f..b854e8be1 100644
--- a/jsonschema2pojo-integration-tests/src/test/java/org/jsonschema2pojo/integration/ref/SelfRefIT.java
+++ b/jsonschema2pojo-integration-tests/src/test/java/org/jsonschema2pojo/integration/ref/SelfRefIT.java
@@ -92,7 +92,7 @@ public void selfRefUsedForAdditionalPropertiesIsReadSuccessfully() throws NoSuch
         assertThat(mapEntryClass.getName(), is("com.example.SelfRefs"));
 
     }
-    
+
     @Test
     public void nestedSelfRefsInStringContentWithoutParentFile() throws NoSuchMethodException, ClassNotFoundException, IOException {
 
@@ -114,7 +114,18 @@ public void nestedSelfRefsInStringContentWithoutParentFile() throws NoSuchMethod
         assertThat(thingClass.getMethod("getNamespace").getReturnType().getSimpleName(), equalTo("String"));
         assertThat(thingClass.getMethod("getName").getReturnType().getSimpleName(), equalTo("String"));
         assertThat(thingClass.getMethod("getVersion").getReturnType().getSimpleName(), equalTo("String"));
-        
-    }    
+
+    }
+
+    @Test
+    public void selfRefUsedInArrayItemIsReadSuccessfully() throws ReflectiveOperationException {
+        ClassLoader resultsClassLoader = schemaRule.generateAndCompile("/schema/ref/selfReferencingArrayItem.json", "com.example");
+
+        Class<?> generatedType = resultsClassLoader.loadClass("com.example.SelfReferencingArrayItem");
+        Type listOfAType = generatedType.getMethod("getSelfReferencingArrayItems").getGenericReturnType();
+        Class<?> listEntryClass = (Class<?>) ((ParameterizedType) listOfAType).getActualTypeArguments()[0];
+
+        assertThat(listEntryClass.getName(), is("com.example.SelfReferencingArrayItem"));
+    }
 
 }
\ No newline at end of file
diff --git a/jsonschema2pojo-integration-tests/src/test/resources/schema/ref/selfReferencingArrayItem.json b/jsonschema2pojo-integration-tests/src/test/resources/schema/ref/selfReferencingArrayItem.json
new file mode 100644
index 000000000..2d5491df0
--- /dev/null
+++ b/jsonschema2pojo-integration-tests/src/test/resources/schema/ref/selfReferencingArrayItem.json
@@ -0,0 +1,12 @@
+{
+  "type": "array",
+  "items": {
+    "type": "object",
+    "properties": {
+      "selfReferencingArrayItems": {
+        "$ref": "#"
+      }
+    },
+    "additionalProperties": false
+  }
+}
\ No newline at end of file