OPENJPA-380

git-svn-id: https://svn.apache.org/repos/asf/openjpa/trunk@578260 13f79535-47bb-0310-9956-ffa450edef68

openjpa-kernel/src/main/java/org/apache/openjpa/conf/OpenJPAConfiguration.java

@@ -611,6 +611,14 @@ public interface OpenJPAConfiguration
      * @since 0.3.0
      */
     public MetaDataRepository getMetaDataRepositoryInstance();
+    
+    /**
+     * Returns true if a metaDataRepository has been created for this 
+     * configuration.
+     * 
+     * @since 1.1.0 1.0.1
+     */
+    public boolean metaDataRepositoryAvailable();
 
     /**
      * Create a new empty metadata repository of the configured type.

openjpa-kernel/src/main/java/org/apache/openjpa/conf/OpenJPAConfigurationImpl.java

@@ -834,6 +834,10 @@ public class OpenJPAConfigurationImpl
             metaRepository = newMetaDataRepositoryInstance();
         return metaRepository;
     }
+    
+    public boolean metaDataRepositoryAvailable(){ 
+        return metaRepository != null; 
+    }
 
     public MetaDataRepository newMetaDataRepositoryInstance() {
         return (MetaDataRepository) metaRepositoryPlugin.instantiate(

openjpa-kernel/src/main/java/org/apache/openjpa/kernel/AbstractBrokerFactory.java

@@ -389,9 +389,11 @@ public abstract class AbstractBrokerFactory
                     broker.close();
             }
 
-            // remove metadata repository from listener list
+            if(_conf.metaDataRepositoryAvailable()) {
-            PCRegistry.removeRegisterClassListener
+                // remove metadata repository from listener list
-                (_conf.getMetaDataRepositoryInstance());
+                PCRegistry.removeRegisterClassListener
+                    (_conf.getMetaDataRepositoryInstance());
+            }
 
             _conf.close();
             _closed = true;

openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/persistence/simple/TestEntityManagerFactory.java

@@ -0,0 +1,37 @@
+/*
+ * 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.openjpa.persistence.simple;
+
+import javax.persistence.EntityManagerFactory;
+import javax.persistence.Persistence;
+
+import junit.framework.TestCase;
+
+public class TestEntityManagerFactory extends TestCase {
+
+    /*
+     * This test uses a mis-configured persistence unit to verify that we will
+     * not connect to the database when an unused emf is closed.  
+     */
+    public void testCloseUnusedEMF() {
+        EntityManagerFactory emf =
+                Persistence.createEntityManagerFactory("invalid");
+        emf.close();
+    }
+}

openjpa-persistence-jdbc/src/test/resources/META-INF/persistence.xml

@@ -54,4 +54,13 @@
                 value="buildSchema(ForeignKeys=true)"/>
         </properties>
     </persistence-unit>
+    
+    <persistence-unit name="invalid">
+        <properties>
+            <property name="openjpa.ConnectionDriverName"
+                value="org.apache.commons.dbcp.BasicDataSource" />
+            <property name="openjpa.ConnectionProperties"
+                value="DriverClassName=not.a.real.Driver,Url=jdbc:notreal://"/>
+        </properties>
+    </persistence-unit>
 </persistence>