/******************************************************************************* | |
* Copyright (c) 1998, 2013 Oracle and/or its affiliates. All rights reserved. | |
* This program and the accompanying materials are made available under the | |
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 | |
* which accompanies this distribution. | |
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html | |
* and the Eclipse Distribution License is available at | |
* http://www.eclipse.org/org/documents/edl-v10.php. | |
* | |
* Contributors: | |
* dclarke - Dynamic Persistence | |
* http://wiki.eclipse.org/EclipseLink/Development/Dynamic | |
* (https://bugs.eclipse.org/bugs/show_bug.cgi?id=200045) | |
* mnorman - tweaks to work from Ant command-line, | |
* get database properties from System, etc. | |
* | |
******************************************************************************/ | |
package org.eclipse.persistence.testing.tests.dynamic.dynamicclassloader; | |
//javase imports | |
import static org.eclipse.persistence.exceptions.DynamicException.INCOMPATIBLE_DYNAMIC_CLASSWRITERS; | |
import static org.junit.Assert.assertEquals; | |
import static org.junit.Assert.assertNotNull; | |
import static org.junit.Assert.assertNull; | |
import static org.junit.Assert.assertSame; | |
import static org.junit.Assert.assertTrue; | |
import static org.junit.Assert.fail; | |
import java.io.ObjectStreamException; | |
import java.io.Serializable; | |
import java.lang.reflect.Constructor; | |
import org.eclipse.persistence.dynamic.DynamicClassLoader; | |
import org.eclipse.persistence.dynamic.DynamicClassWriter; | |
import org.eclipse.persistence.dynamic.DynamicEntity; | |
import org.eclipse.persistence.dynamic.EclipseLinkClassWriter; | |
import org.eclipse.persistence.exceptions.DynamicException; | |
import org.eclipse.persistence.internal.dynamic.DynamicEntityImpl; | |
import org.eclipse.persistence.internal.helper.ConversionManager; | |
import org.eclipse.persistence.internal.helper.SerializationHelper; | |
import org.junit.Test; | |
public class DynamicClassLoaderTestSuite { | |
public static final String PACKAGE_PREFIX = | |
DynamicClassLoaderTestSuite.class.getPackage().getName(); | |
static final String INCOMPATIBLE_CLASSNAME = Incompatible.class.getSimpleName(); | |
static final String COMPATIBLE_CLASSNAME = Compatible.class.getSimpleName(); | |
static final String MY_CLASSNAME = PACKAGE_PREFIX + ".MyClass"; | |
@Test | |
public void noParentLoader() throws Exception { | |
DynamicClassLoader dcl = new DynamicClassLoader(null); | |
assertNull(dcl.getParent()); | |
} | |
@Test | |
public void loadCoreClass() throws Exception { | |
DynamicClassLoader dcl = new DynamicClassLoader(null); | |
Class<?> stringClass = dcl.loadClass("java.lang.String"); | |
assertTrue("core class java.lang.String not found", String.class == stringClass); | |
} | |
@Test(expected=NoClassDefFoundError.class) | |
public void createDynamicClassWithNoParentLoader() { | |
DynamicClassLoader dcl = new DynamicClassLoader(null); | |
dcl.createDynamicClass(MY_CLASSNAME); | |
} | |
@Test(expected=IllegalArgumentException.class) | |
public void createIncompatibleClass() { | |
DynamicClassLoader dcl = new DynamicClassLoader(DynamicClassLoaderTestSuite.class.getClassLoader()); | |
dcl.createDynamicClass(PACKAGE_PREFIX + "." + INCOMPATIBLE_CLASSNAME); | |
} | |
@Test | |
public void createCompatibleClass() { | |
DynamicClassLoader dcl = new DynamicClassLoader(DynamicClassLoaderTestSuite.class.getClassLoader()); | |
Class<?> dynamicClass = dcl.createDynamicClass(PACKAGE_PREFIX + "." + COMPATIBLE_CLASSNAME); | |
assertNotNull(dynamicClass); | |
assertSame(Compatible.class, dynamicClass); | |
} | |
@SuppressWarnings("unchecked") | |
@Test | |
public void loadClass_DynamicEntityImpl() throws Exception { | |
DynamicClassLoader dcl = new DynamicClassLoader(DynamicClassLoaderTestSuite.class.getClassLoader()); | |
dcl.addClass(MY_CLASSNAME); | |
Class<?> myDynamicClass = dcl.loadClass(MY_CLASSNAME); | |
checkMyClass(dcl, myDynamicClass); | |
} | |
protected void checkMyClass(DynamicClassLoader dcl, Class<?> myDynamicClass) | |
throws ClassNotFoundException, InstantiationException, IllegalAccessException { | |
assertNotNull(myDynamicClass); | |
assertEquals(MY_CLASSNAME, myDynamicClass.getName()); | |
assertSame(DynamicEntityImpl.class, myDynamicClass.getSuperclass()); | |
assertSame(myDynamicClass, dcl.loadClass(MY_CLASSNAME)); | |
ConversionManager.setDefaultLoader(dcl); | |
ConversionManager.getDefaultManager().setLoader(dcl); | |
assertSame(myDynamicClass, ConversionManager.getDefaultManager().convertClassNameToClass(MY_CLASSNAME)); | |
assertSame(myDynamicClass, ConversionManager.getDefaultManager().convertObject(MY_CLASSNAME, Class.class)); | |
assertSame(myDynamicClass, ConversionManager.getDefaultLoader().loadClass(MY_CLASSNAME)); | |
assertSame(myDynamicClass, ConversionManager.loadClass(MY_CLASSNAME)); | |
Object newInstance = myDynamicClass.newInstance(); | |
assertNotNull("newInstance is null", newInstance); | |
Constructor<DynamicEntity>[] constructors = | |
(Constructor<DynamicEntity>[])myDynamicClass.getConstructors(); | |
assertEquals(1, constructors.length); | |
assertEquals(0, constructors[0].getParameterTypes().length); | |
} | |
@SuppressWarnings("unchecked") | |
@Test | |
public void createDynamicClass_DynamicEntityImpl() throws Exception { | |
DynamicClassLoader dcl = new DynamicClassLoader(DynamicClassLoaderTestSuite.class.getClassLoader()); | |
Class<?> myDynamicClass = dcl.createDynamicClass(MY_CLASSNAME); | |
checkMyClass(dcl, myDynamicClass); | |
} | |
@Test | |
public void createDynamicClass_Twice() throws Exception { | |
DynamicClassLoader dcl = new DynamicClassLoader(DynamicClassLoaderTestSuite.class.getClassLoader()); | |
assertNull(dcl.getClassWriter(MY_CLASSNAME)); | |
Class<?> dynamicClass = dcl.createDynamicClass(MY_CLASSNAME); | |
assertNotNull(dynamicClass); | |
assertEquals(MY_CLASSNAME, dynamicClass.getName()); | |
EclipseLinkClassWriter writer = dcl.getClassWriter(MY_CLASSNAME); | |
assertNotNull(writer); | |
Class<?> dynamicClass2 = dcl.createDynamicClass(MY_CLASSNAME); | |
assertSame(dynamicClass, dynamicClass2); | |
EclipseLinkClassWriter writer2 = dcl.getClassWriter(MY_CLASSNAME); | |
assertNotNull(writer); | |
assertSame(writer, writer2); | |
} | |
@Test | |
public void defaultWriter() throws Exception { | |
DynamicClassLoader dcl = new DynamicClassLoader(DynamicClassLoaderTestSuite.class.getClassLoader()); | |
assertEquals(DynamicClassWriter.class, dcl.getDefaultWriter().getClass()); | |
} | |
@Test | |
public void loadClass_DefaultConstructor() throws Exception { | |
DynamicClassLoader dcl = new DynamicClassLoader(DynamicClassLoaderTestSuite.class.getClassLoader()); | |
dcl.addClass(MY_CLASSNAME, DefaultConstructor.class); | |
Class<?> dynamicClass = dcl.loadClass(MY_CLASSNAME); | |
assertNotNull(dynamicClass); | |
assertSame(dynamicClass, dcl.loadClass(MY_CLASSNAME)); | |
assertSame(DefaultConstructor.class, dynamicClass.getSuperclass()); | |
DefaultConstructor entity = (DefaultConstructor) dynamicClass.newInstance(); | |
assertNotNull(entity); | |
} | |
@Test | |
public void loadClass_WriteReplace() throws Exception { | |
DynamicClassLoader dcl = new DynamicClassLoader(DynamicClassLoaderTestSuite.class.getClassLoader()); | |
dcl.addClass(MY_CLASSNAME, WriteReplace.class); | |
Class<?> dynamicClass = dcl.loadClass(MY_CLASSNAME); | |
assertNotNull(dynamicClass); | |
assertEquals(MY_CLASSNAME, dynamicClass.getName()); | |
assertSame(WriteReplace.class, dynamicClass.getSuperclass()); | |
assertSame(dynamicClass, dcl.loadClass(MY_CLASSNAME)); | |
WriteReplace entity = (WriteReplace) dynamicClass.newInstance(); | |
assertNotNull(entity); | |
byte[] entityBytes = SerializationHelper.serialize(entity); | |
byte[] stringBytes = SerializationHelper.serialize(entity.getClass().getName()); | |
assertEquals(stringBytes.length, entityBytes.length); | |
for (int index = 0; index < stringBytes.length; index++) { | |
assertEquals(stringBytes[index], entityBytes[index]); | |
} | |
Object deserializedValue = SerializationHelper.deserialize(entityBytes); | |
assertNotNull(deserializedValue); | |
assertEquals(String.class, deserializedValue.getClass()); | |
assertEquals(dynamicClass.getName(), deserializedValue); | |
} | |
@Test | |
public void createDynamicClass_WriteReplace() throws Exception { | |
DynamicClassLoader dcl = new DynamicClassLoader(DynamicClassLoaderTestSuite.class.getClassLoader()); | |
Class<?> dynamicClass = dcl.createDynamicClass(MY_CLASSNAME, WriteReplace.class); | |
assertNotNull(dynamicClass); | |
assertEquals(MY_CLASSNAME, dynamicClass.getName()); | |
assertSame(WriteReplace.class, dynamicClass.getSuperclass()); | |
assertSame(dynamicClass, dcl.loadClass(MY_CLASSNAME)); | |
WriteReplace entity = (WriteReplace) dynamicClass.newInstance(); | |
assertNotNull(entity); | |
byte[] entityBytes = SerializationHelper.serialize(entity); | |
byte[] stringBytes = SerializationHelper.serialize(entity.getClass().getName()); | |
assertEquals(stringBytes.length, entityBytes.length); | |
for (int index = 0; index < stringBytes.length; index++) { | |
assertEquals(stringBytes[index], entityBytes[index]); | |
} | |
Object deserializedValue = SerializationHelper.deserialize(entityBytes); | |
assertNotNull(deserializedValue); | |
assertEquals(String.class, deserializedValue.getClass()); | |
assertEquals(dynamicClass.getName(), deserializedValue); | |
} | |
@Test | |
public void duplicateAddClassWithSameParent() throws Exception { | |
DynamicClassLoader dcl = new DynamicClassLoader(Thread.currentThread().getContextClassLoader()); | |
dcl.addClass(MY_CLASSNAME, DefaultConstructor.class); | |
Class<?> dynamicClass = dcl.loadClass(MY_CLASSNAME); | |
assertNotNull(dynamicClass); | |
assertSame(dynamicClass, dcl.loadClass(MY_CLASSNAME)); | |
assertSame(DefaultConstructor.class, dynamicClass.getSuperclass()); | |
EclipseLinkClassWriter firstWriter = dcl.getClassWriter(MY_CLASSNAME); | |
DefaultConstructor entity = (DefaultConstructor) dynamicClass.newInstance(); | |
assertNotNull(entity); | |
assertNotNull("DCL does not contain expected writer", dcl.getClassWriter(MY_CLASSNAME)); | |
dcl.addClass(MY_CLASSNAME, DefaultConstructor.class); | |
EclipseLinkClassWriter secondWriter = dcl.getClassWriter(MY_CLASSNAME); | |
assertSame(firstWriter, secondWriter); | |
} | |
/** | |
* Verify that a second request to create a class with the same name and | |
* different parents fails. | |
*/ | |
@Test | |
public void duplicateAddClassWithDifferentParent() throws Exception { | |
DynamicClassLoader dcl = new DynamicClassLoader(Thread.currentThread().getContextClassLoader()); | |
dcl.addClass(MY_CLASSNAME, DefaultConstructor.class); | |
Class<?> dynamicClass = dcl.loadClass(MY_CLASSNAME); | |
assertNotNull(dynamicClass); | |
assertSame(dynamicClass, dcl.loadClass(MY_CLASSNAME)); | |
assertSame(DefaultConstructor.class, dynamicClass.getSuperclass()); | |
DefaultConstructor entity = (DefaultConstructor) dynamicClass.newInstance(); | |
assertNotNull(entity); | |
assertNotNull("DCL does not contain expected writer", dcl.getClassWriter(MY_CLASSNAME)); | |
try { | |
dcl.addClass(MY_CLASSNAME, WriteReplace.class); | |
} catch (DynamicException de) { | |
String errorMessage = de.getMessage(); | |
int errorCode = de.getErrorCode(); | |
assertTrue("Incorrect dynamic exception", errorMessage.startsWith("\r\nException Description: Duplicate addClass request with incompatible writer:")); | |
assertEquals("Unexpected error code", INCOMPATIBLE_DYNAMIC_CLASSWRITERS, errorCode); | |
return; | |
} | |
fail("No DynamicException thrown for duplicate addClass with different parent"); | |
} | |
public static class DefaultConstructor { | |
} | |
public static class StringConstructor { | |
public StringConstructor(String arg) { | |
} | |
} | |
public static class WriteReplace implements Serializable { | |
protected Object writeReplace() throws ObjectStreamException { | |
return getClass().getName(); | |
} | |
} | |
} |