SLING-1490 - use DEBUG log level for RepositoryException that indicates builtin nodetype being re-registered

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@934712 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index fbb0dcc..272bff3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -127,6 +127,16 @@
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-api</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-simple</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
 </project>
diff --git a/src/main/java/org/apache/sling/jcr/base/NodeTypeLoader.java b/src/main/java/org/apache/sling/jcr/base/NodeTypeLoader.java
index c4b05f8..fe1b8b3 100644
--- a/src/main/java/org/apache/sling/jcr/base/NodeTypeLoader.java
+++ b/src/main/java/org/apache/sling/jcr/base/NodeTypeLoader.java
@@ -76,7 +76,11 @@
         } catch (IOException ioe) {
             log.error("Cannot register node types from " + source, ioe);
         } catch (RepositoryException re) {
-            log.error("Cannot register node types from " + source, re);
+            if(isReRegisterBuiltinNodeType(re)) {
+                log.debug("Attempt to re-register built-in node type from " + source, re);
+            } else {
+                log.error("Cannot register node types from " + source, re);
+            }
         } finally {
             if (ins != null) {
                 try {
@@ -118,9 +122,22 @@
         try {
             Workspace wsp = session.getWorkspace();
             CndImporter.registerNodeTypes(reader, systemId, wsp.getNodeTypeManager(), wsp.getNamespaceRegistry(), session.getValueFactory(), reregisterExisting);
+        } catch(RepositoryException re) {
+            if(isReRegisterBuiltinNodeType(re)) {
+                log.debug("Attempt to re-register built-in node type, RepositoryException ignored", re);
+            } else {
+                throw re;
+            }
         } catch (ParseException e) {
             throw new IOException("Unable to parse CND Input: " + e.getMessage());
         }
         return true;
     }
+    
+    /** True if we think e was caused by an attempt to reregister a built-in node type */
+    static boolean isReRegisterBuiltinNodeType(Exception e) {
+        return 
+            (e instanceof RepositoryException)
+            & (e.getMessage() != null && e.getMessage().contains("reregister built-in node type"));
+    }
 }
diff --git a/src/test/java/org/apache/sling/jcr/base/NodeTypeLoaderTest.java b/src/test/java/org/apache/sling/jcr/base/NodeTypeLoaderTest.java
new file mode 100644
index 0000000..a71a67d
--- /dev/null
+++ b/src/test/java/org/apache/sling/jcr/base/NodeTypeLoaderTest.java
@@ -0,0 +1,41 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 org.apache.sling.jcr.base;
+
+import javax.jcr.RepositoryException;
+
+import org.junit.Test;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+public class NodeTypeLoaderTest {
+    
+    @Test
+    public void testisReRegisterBuiltinNodeType() {
+        assertFalse("Exception does not match", 
+                NodeTypeLoader.isReRegisterBuiltinNodeType(new Exception()));
+        assertFalse("Plain RepositoryException does not match", 
+                NodeTypeLoader.isReRegisterBuiltinNodeType(new RepositoryException()));
+        assertFalse("Non-reregister RepositoryException does not match", 
+                NodeTypeLoader.isReRegisterBuiltinNodeType(new RepositoryException("builtin that's it")));
+        assertTrue("Reregister RepositoryException matches", 
+                NodeTypeLoader.isReRegisterBuiltinNodeType(
+                        new RepositoryException("{http://www.jcp.org/jcr/mix/1.0}language: can't reregister built-in node type")));
+    }
+}