first exception when reading a class file should be a warning

Signed-off-by: Lukas Jungmann <lukas.jungmann@oracle.com>

Author: lukasj

jpa/org.eclipse.persistence.jpa/src/main/java/org/eclipse/persistence/internal/jpa/metadata/accessors/objects/MetadataAsmFactory.java

@@ -112,8 +112,8 @@ public InputStream run() {
             // without class version check
             SessionLog log = getLogger().getSession() != null
                     ? getLogger().getSession().getSessionLog() : AbstractSessionLog.getLog();
-            if (log.shouldLog(SessionLog.SEVERE, SessionLog.METADATA)) {
-                SessionLogEntry entry = new SessionLogEntry(getLogger().getSession(), SessionLog.SEVERE, SessionLog.METADATA, iae);
+            if (log.shouldLog(SessionLog.WARNING, SessionLog.METADATA)) {
+                SessionLogEntry entry = new SessionLogEntry(getLogger().getSession(), SessionLog.WARNING, SessionLog.METADATA, iae);
                 entry.setMessage(ExceptionLocalization.buildMessage("unsupported_classfile_version", new Object[] { className }));
                 log.log(entry);
             }
@@ -123,6 +123,7 @@ public InputStream run() {
                     Attribute[] attributes = new Attribute[0];
                     reader.accept(visitor, attributes, ClassReader.SKIP_CODE | ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);
                 } catch (Exception e) {
+                    // our fall-back failed, this is severe
                     if (log.shouldLog(SessionLog.SEVERE, SessionLog.METADATA)) {
                         SessionLogEntry entry = new SessionLogEntry(getLogger().getSession(), SessionLog.SEVERE, SessionLog.METADATA, e);
                         entry.setMessage(ExceptionLocalization.buildMessage("unsupported_classfile_version", new Object[] { className }));