Fix for issue with JSR-310 (java 8 date/time) module, TemporalAdjuster values

Author: cowtowncoder

release-notes/VERSION-2.x

@@ -4,6 +4,10 @@ Project: jackson-databind
 === Releases === 
 ------------------------------------------------------------------------
 
+2.12.3 (not yet released)
+
+- Fix for [modules-java8#207]: prevent fail on secondary Java 8 date/time types
+
 2.12.2 (03-Mar-2021)
 
 #754: EXTERNAL_PROPERTY does not work well with `@JsonCreator` and

src/main/java/com/fasterxml/jackson/databind/util/BeanUtil.java

@@ -295,13 +295,18 @@ public static String stdManglePropertyName(final String basename, final int offs
      * @since 2.12
      */
     public static String checkUnsupportedType(JavaType type) {
-        final Class<?> rawType = type.getRawClass();
+        final String className = type.getRawClass().getName();
         String typeName, moduleName;
 
-        if (isJava8TimeClass(rawType)) {
+        if (isJava8TimeClass(className)) {
+            // [modules-java8#207]: do NOT check/block helper types in sub-packages,
+            // but only main-level types (to avoid issues with module)
+            if (className.indexOf('.', 10) >= 0) {
+                return null;
+            }
             typeName =  "Java 8 date/time";
             moduleName = "com.fasterxml.jackson.datatype:jackson-datatype-jsr310";
-        } else if (isJodaTimeClass(rawType)) {
+        } else if (isJodaTimeClass(className)) {
             typeName =  "Joda date/time";
             moduleName = "com.fasterxml.jackson.datatype:jackson-datatype-joda";
         } else {
@@ -310,18 +315,26 @@ public static String checkUnsupportedType(JavaType type) {
         return String.format("%s type %s not supported by default: add Module \"%s\" to enable handling",
                 typeName, ClassUtil.getTypeDescription(type), moduleName);
     }
-    
+
     /**
      * @since 2.12
      */
     public static boolean isJava8TimeClass(Class<?> rawType) {
-        return rawType.getName().startsWith("java.time.");
+        return isJava8TimeClass(rawType.getName());
+    }
+
+    private static boolean isJava8TimeClass(String className) {
+        return className.startsWith("java.time.");
     }
 
     /**
      * @since 2.12
      */
     public static boolean isJodaTimeClass(Class<?> rawType) {
-        return rawType.getName().startsWith("org.joda.time.");
+        return isJodaTimeClass(rawType.getName());
+    }
+
+    private static boolean isJodaTimeClass(String className) {
+        return className.startsWith("org.joda.time.");
     }
 }