HBX-2390: Create a JBoss Tools adaptation layer in Hibernate Tools

  - Add new initial test class 'org.hibernate.tool.orm.jbt.wrp.CollectionPersisterWrapperFactoryTest'
  - Create new implementation class 'org.hibernate.tool.orm.jbt.wrp.CollectionPersisterWrapperFactory'

Signed-off-by: Koen Aers <[email protected]>

jbt/src/main/java/org/hibernate/tool/orm/jbt/wrp/CollectionPersisterWrapperFactory.java

@@ -0,0 +1,41 @@
+package org.hibernate.tool.orm.jbt.wrp;
+
+import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.Method;
+import java.lang.reflect.Proxy;
+
+import org.hibernate.persister.collection.CollectionPersister;
+
+public class CollectionPersisterWrapperFactory {
+
+	public static Object create(CollectionPersister delegate) {
+		return Proxy.newProxyInstance(
+				CollectionPersisterWrapperFactory.class.getClassLoader(), 
+				new Class[] { CollectionPersisterWrapper.class }, 
+				new CollectionPersisterInvocationHandler(delegate));
+	}
+
+	static interface CollectionPersisterWrapper extends CollectionPersister, Wrapper {}
+
+	static class CollectionPersisterInvocationHandler implements InvocationHandler {
+
+		private CollectionPersister delegate;
+
+		private CollectionPersisterInvocationHandler(CollectionPersister delegate) {
+			this.delegate = delegate;
+		}
+
+		@Override
+		public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
+			if ("getWrappedObject".equals(method.getName())) {
+				return delegate;
+			} else if ("getElementType".equals(method.getName())) {
+				return TypeWrapperFactory.createTypeWrapper(delegate.getElementType());
+			} else {
+				return method.invoke(delegate, args);
+			}
+		}
+
+	}
+
+}

jbt/src/test/java/org/hibernate/tool/orm/jbt/wrp/CollectionPersisterWrapperFactoryTest.java

@@ -0,0 +1,79 @@
+package org.hibernate.tool.orm.jbt.wrp;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+import java.io.File;
+import java.io.FileWriter;
+import java.nio.file.Files;
+import java.util.HashSet;
+import java.util.Set;
+
+import org.hibernate.cfg.AvailableSettings;
+import org.hibernate.cfg.Configuration;
+import org.hibernate.persister.collection.CollectionPersister;
+import org.hibernate.tool.orm.jbt.util.MockConnectionProvider;
+import org.hibernate.tool.orm.jbt.util.MockDialect;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+
+public class CollectionPersisterWrapperFactoryTest {
+
+	private static final String TEST_CFG_XML_STRING =
+			"<hibernate-configuration>" +
+			"  <session-factory>" + 
+			"    <property name='" + AvailableSettings.DIALECT + "'>" + MockDialect.class.getName() + "</property>" +
+			"    <property name='" + AvailableSettings.CONNECTION_PROVIDER + "'>" + MockConnectionProvider.class.getName() + "</property>" +
+			"  </session-factory>" +
+			"</hibernate-configuration>";
+
+	private static final String TEST_HBM_XML_STRING =
+			"<hibernate-mapping package='org.hibernate.tool.orm.jbt.wrp'>" +
+			"  <class name='CollectionPersisterWrapperFactoryTest$Foo'>" + 
+			"    <id name='id' access='field' />" +
+			"    <set name='bars' access='field' >" +
+			"      <key column='barId' />" +
+			"      <element column='barVal' type='string' />" +
+			"    </set>" +
+			"  </class>" +
+			"</hibernate-mapping>";
+
+	public static class Foo {
+		public String id;
+		public Set<String> bars = new HashSet<String>();
+	}
+
+	@TempDir
+	public File tempDir;
+
+	private CollectionPersister collectionPersisterWrapper = null;
+	private CollectionPersister wrappedCollectionPersister = null;
+
+	private SessionFactoryWrapper sessionFactory = null;
+
+	@BeforeEach
+	public void beforeEach() throws Exception {
+		tempDir = Files.createTempDirectory("temp").toFile();
+		File cfgXmlFile = new File(tempDir, "hibernate.cfg.xml");
+		FileWriter fileWriter = new FileWriter(cfgXmlFile);
+		fileWriter.write(TEST_CFG_XML_STRING);
+		fileWriter.close();
+		File hbmXmlFile = new File(tempDir, "Foo.hbm.xml");
+		fileWriter = new FileWriter(hbmXmlFile);
+		fileWriter.write(TEST_HBM_XML_STRING);
+		fileWriter.close();
+		Configuration configuration = (Configuration)WrapperFactory.createNativeConfigurationWrapper();
+		configuration.addFile(hbmXmlFile);
+		configuration.configure(cfgXmlFile);
+		sessionFactory = (SessionFactoryWrapper)configuration.buildSessionFactory();
+		collectionPersisterWrapper = sessionFactory.getCollectionMetadata(Foo.class.getName() + ".bars");
+	    wrappedCollectionPersister = (CollectionPersister)((Wrapper)collectionPersisterWrapper).getWrappedObject();
+	}
+
+	@Test
+	public void testConstruction() {
+		assertNotNull(collectionPersisterWrapper);
+		assertNotNull(wrappedCollectionPersister);
+	}
+
+}