introduce @Suppress annotation to disable processor

hibernate-core/src/main/java/org/hibernate/annotations/processing/Suppress.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.annotations.processing;
+
+import org.hibernate.Incubating;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+import static java.lang.annotation.ElementType.PACKAGE;
+import static java.lang.annotation.ElementType.TYPE;
+import static java.lang.annotation.RetentionPolicy.CLASS;
+
+/**
+ * Indicates that a package or top-level type should be ignored
+ * by the Hibernate annotation processor.
+ *
+ * @author Gavin King
+ * @since 6.5
+ */
+@Target({PACKAGE, TYPE})
+@Retention(CLASS)
+@Incubating
+public @interface Suppress {
+}

hibernate-core/src/test/java/org/hibernate/orm/test/annotations/onetoone/ShowDescription.java

@@ -10,10 +10,12 @@ package org.hibernate.orm.test.annotations.onetoone;
 import jakarta.persistence.Entity;
 import jakarta.persistence.Id;
 import jakarta.persistence.OneToOne;
+import org.hibernate.annotations.processing.Suppress;
 
 /**
  * @author Emmanuel Bernard
  */
+@Suppress
 @Entity
 public class ShowDescription {
 	@Id

tooling/metamodel-generator/src/main/java/org/hibernate/processor/HibernateProcessor.java

@@ -279,7 +279,11 @@ public class HibernateProcessor extends AbstractProcessor {
 
 		for ( Element element : roundEnvironment.getRootElements() ) {
 			try {
-				if ( isEntityOrEmbeddable( element ) ) {
+				if ( hasAnnotation( element, SUPPRESS)
+						|| hasAnnotation( context.getElementUtils().getPackageOf(element), SUPPRESS ) ) {
+					// skip it completely
+				}
+				else if ( isEntityOrEmbeddable( element ) ) {
 					context.logMessage( Diagnostic.Kind.OTHER, "Processing annotated entity class '" + element + "'" );
 					handleRootElementAnnotationMirrors( element );
 				}

tooling/metamodel-generator/src/main/java/org/hibernate/processor/util/Constants.java

@@ -61,6 +61,7 @@ public final class Constants {
 	public static final String SQL = "org.hibernate.annotations.processing.SQL";
 	public static final String FIND = "org.hibernate.annotations.processing.Find";
 	public static final String PATTERN = "org.hibernate.annotations.processing.Pattern";
+	public static final String SUPPRESS = "org.hibernate.annotations.processing.Suppress";
 
 	public static final String JD_REPOSITORY = "jakarta.data.repository.Repository";
 	public static final String JD_QUERY = "jakarta.data.repository.Query";