HHH-13061 Introduce a 'none' option for BytecodeProvider implementation choice

hibernate-core/src/main/java/org/hibernate/bytecode/internal/none/BytecodeProviderImpl.java

@@ -0,0 +1,47 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
+ * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ */
+package org.hibernate.bytecode.internal.none;
+
+import org.hibernate.HibernateException;
+import org.hibernate.bytecode.enhance.spi.EnhancementContext;
+import org.hibernate.bytecode.enhance.spi.Enhancer;
+import org.hibernate.bytecode.spi.BytecodeProvider;
+import org.hibernate.bytecode.spi.ProxyFactoryFactory;
+import org.hibernate.bytecode.spi.ReflectionOptimizer;
+import org.hibernate.cfg.AvailableSettings;
+
+/**
+ * This BytecodeProvider represents the "no-op" enhancer; mostly useful
+ * as an optimisation when not needing any byte code optimisation applied,
+ * for example when the entities have been enhanced at compile time.
+ * Choosing this BytecodeProvider allows to exclude the bytecode enhancement
+ * libraries from the runtime classpath, but is not compatible
+ * with the option AvailableSettings#USE_REFLECTION_OPTIMIZER .
+ *
+ * @since 5.4
+ */
+public final class BytecodeProviderImpl implements BytecodeProvider {
+
+	@Override
+	public ProxyFactoryFactory getProxyFactoryFactory() {
+		return new NoProxyFactoryFactory();
+	}
+
+	@Override
+	public ReflectionOptimizer getReflectionOptimizer(
+			Class clazz,
+			String[] getterNames,
+			String[] setterNames,
+			Class[] types) {
+		throw new HibernateException( "Using the ReflectionOptimizer is not possible when the configured BytecodeProvider is 'none'. Disable " + AvailableSettings.USE_REFLECTION_OPTIMIZER + " or use a different BytecodeProvider");
+	}
+
+	@Override
+	public Enhancer getEnhancer(EnhancementContext enhancementContext) {
+		return null;
+	}
+}

hibernate-core/src/main/java/org/hibernate/bytecode/internal/none/DisallowedProxyFactory.java

@@ -0,0 +1,40 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
+ * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ */
+package org.hibernate.bytecode.internal.none;
+
+import java.io.Serializable;
+import java.lang.reflect.Method;
+import java.util.Set;
+
+import org.hibernate.HibernateException;
+import org.hibernate.engine.spi.SessionFactoryImplementor;
+import org.hibernate.engine.spi.SharedSessionContractImplementor;
+import org.hibernate.proxy.HibernateProxy;
+import org.hibernate.proxy.ProxyFactory;
+import org.hibernate.type.CompositeType;
+
+final class DisallowedProxyFactory implements ProxyFactory {
+
+	static final DisallowedProxyFactory INSTANCE = new DisallowedProxyFactory();
+
+	@Override
+	public void postInstantiate(
+			String entityName,
+			Class persistentClass,
+			Set<Class> interfaces,
+			Method getIdentifierMethod,
+			Method setIdentifierMethod,
+			CompositeType componentIdType) throws HibernateException {
+
+	}
+
+	@Override
+	public HibernateProxy getProxy(Serializable id, SharedSessionContractImplementor session) throws HibernateException {
+		throw new HibernateException( "Generation of HibernateProxy instances at runtime is not allowed when the configured BytecodeProvider is 'none'; your model requires a more advanced BytecodeProvider to be enabled." );
+	}
+
+}

hibernate-core/src/main/java/org/hibernate/bytecode/internal/none/NoProxyFactoryFactory.java

@@ -0,0 +1,29 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
+ * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ */
+package org.hibernate.bytecode.internal.none;
+
+import org.hibernate.bytecode.spi.BasicProxyFactory;
+import org.hibernate.bytecode.spi.ProxyFactoryFactory;
+import org.hibernate.engine.spi.SessionFactoryImplementor;
+import org.hibernate.proxy.ProxyFactory;
+
+
+/**
+ * When entities are enhanced in advance, proxies are not needed.
+ */
+final class NoProxyFactoryFactory implements ProxyFactoryFactory {
+
+	@Override
+	public ProxyFactory buildProxyFactory(SessionFactoryImplementor sessionFactory) {
+		return DisallowedProxyFactory.INSTANCE;
+	}
+
+	@Override
+	public BasicProxyFactory buildBasicProxyFactory(Class superClass, Class[] interfaces) {
+		return new NoneBasicProxyFactory( superClass, interfaces );
+	}
+}

hibernate-core/src/main/java/org/hibernate/bytecode/internal/none/NoneBasicProxyFactory.java

@@ -0,0 +1,32 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
+ * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ */
+package org.hibernate.bytecode.internal.none;
+
+import java.util.Arrays;
+
+import org.hibernate.HibernateException;
+import org.hibernate.bytecode.spi.BasicProxyFactory;
+
+/**
+ * This is used to instantiate "components" which are either Abstract or defined by an Interface.
+ */
+final class NoneBasicProxyFactory implements BasicProxyFactory {
+
+	private final Class superClass;
+	private final Class[] interfaces;
+
+	public NoneBasicProxyFactory(Class superClass, Class[] interfaces) {
+		this.superClass = superClass;
+		this.interfaces = interfaces;
+	}
+
+	@Override
+	public Object getProxy() {
+		throw new HibernateException( "NoneBasicProxyFactory is unable to generate a BasicProxy for type " + superClass + " and interfaces " + Arrays.toString( interfaces ) + ". Enable a different BytecodeProvider." );
+	}
+
+}

hibernate-core/src/main/java/org/hibernate/cfg/Environment.java

@@ -329,6 +329,7 @@ public final class Environment implements AvailableSettings {
 
 	public static final String BYTECODE_PROVIDER_NAME_JAVASSIST = "javassist";
 	public static final String BYTECODE_PROVIDER_NAME_BYTEBUDDY = "bytebuddy";
+	public static final String BYTECODE_PROVIDER_NAME_NONE = "none";
 	public static final String BYTECODE_PROVIDER_NAME_DEFAULT = BYTECODE_PROVIDER_NAME_BYTEBUDDY;
 
 	public static BytecodeProvider buildBytecodeProvider(Properties properties) {
@@ -337,6 +338,9 @@ public final class Environment implements AvailableSettings {
 	}
 
 	private static BytecodeProvider buildBytecodeProvider(String providerName) {
+		if ( BYTECODE_PROVIDER_NAME_NONE.equals( providerName ) ) {
+			return new org.hibernate.bytecode.internal.none.BytecodeProviderImpl();
+		}
 		if ( BYTECODE_PROVIDER_NAME_BYTEBUDDY.equals( providerName ) ) {
 			return new org.hibernate.bytecode.internal.bytebuddy.BytecodeProviderImpl();
 		}