Removing empty classes

Some generated classes are empty and not really used

Signed-off-by: Francisco Javier Tirado Sarti <[email protected]>

api/src/main/resources/schema/workflow.yaml

@@ -664,7 +664,8 @@ $defs:
         basic:
           type: object
           oneOf:
-            - properties:
+            - title: BasicAuthInfo
+              properties:
                 username:
                   type: string
                   description: The username to use.
@@ -680,7 +681,8 @@ $defs:
         bearer:
           type: object
           oneOf:
-            - properties:
+            - title: BearerAuthInfo
+              properties:
                 token:
                   type: string
                   description: The bearer token to use.
@@ -693,7 +695,8 @@ $defs:
         oauth2:
           type: object
           oneOf:
-            - properties:
+            - title: OAuth2Info 
+              properties:
                 authority:
                   type: string
                   format: uri

custom-generator/src/main/java/io/serverlessworkflow/generator/EmptyObjectTypeRule.java

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2020-Present The Serverless Workflow Specification Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.serverlessworkflow.generator;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.sun.codemodel.JClassContainer;
+import com.sun.codemodel.JType;
+import org.jsonschema2pojo.Schema;
+import org.jsonschema2pojo.rules.RuleFactory;
+import org.jsonschema2pojo.rules.TypeRule;
+
+public class EmptyObjectTypeRule extends TypeRule {
+
+  protected EmptyObjectTypeRule(RuleFactory ruleFactory) {
+    super(ruleFactory);
+  }
+
+  @Override
+  public JType apply(
+      String nodeName,
+      JsonNode node,
+      JsonNode parent,
+      JClassContainer generatableType,
+      Schema currentSchema) {
+    return isEmptyObject(node)
+        ? generatableType.owner().ref(Object.class)
+        : super.apply(nodeName, node, parent, generatableType, currentSchema);
+  }
+
+  private boolean isEmptyObject(JsonNode node) {
+    return node.size() == 1 && node.has("type") && node.get("type").asText().equals("object");
+  }
+}

custom-generator/src/main/java/io/serverlessworkflow/generator/UnreferencedFactory.java

@@ -27,6 +27,11 @@ public Rule<JClassContainer, JType> getSchemaRule() {
     return new AllAnyOneOfSchemaRule(this);
   }
 
+  @Override
+  public Rule<JClassContainer, JType> getTypeRule() {
+    return new EmptyObjectTypeRule(this);
+  }
+
   @Override
   public Rule<JDefinedClass, JDefinedClass> getAdditionalPropertiesRule() {
     return new UnevaluatedPropertiesRule(this);