HHH-15358 Add test for issue

hibernate-core/src/test/bundles/prova/META-INF/persistence.xml

@@ -0,0 +1,38 @@
+<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence"
+             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+             xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence
+             http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"
+             version="2.1">
+
+    <persistence-unit name="NullWhere">
+        <description>
+            Persistence unit for Hibernate User Guide
+        </description>
+
+        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
+
+        <class>org.hibernate.orm.test.where.annotations.Nonce</class>
+
+        <properties>
+            <property name="jakarta.persistence.jdbc.driver"
+                      value="org.h2.Driver" />
+
+            <property name="jakarta.persistence.jdbc.url"
+                      value="jdbc:h2:mem:db1;DB_CLOSE_DELAY=-1" />
+
+            <property name="jakarta.persistence.jdbc.user"
+                      value="sa" />
+
+            <property name="jakarta.persistence.jdbc.password"
+                      value="" />
+
+            <property name="hibernate.show_sql"
+                      value="true" />
+
+            <property name="hibernate.hbm2ddl.auto"
+                      value="update" />
+        </properties>
+
+    </persistence-unit>
+
+</persistence>

hibernate-core/src/test/java/org/hibernate/orm/test/where/annotations/NullWhereClauseTest.java

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+package org.hibernate.orm.test.where.annotations;
+
+import org.hibernate.annotations.Where;
+import org.hibernate.cfg.AvailableSettings;
+
+import org.hibernate.testing.TestForIssue;
+import org.hibernate.testing.orm.junit.EntityManagerFactoryScope;
+import org.hibernate.testing.orm.junit.Jpa;
+import org.hibernate.testing.orm.junit.Setting;
+import org.junit.jupiter.api.Test;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+
+
+@Jpa(
+		annotatedClasses = NullWhereClauseTest.Person.class,
+		properties = {
+				@Setting(name = AvailableSettings.GLOBALLY_QUOTED_IDENTIFIERS, value = "true"),
+		}
+)
+@TestForIssue(jiraKey = "HHH-15358")
+public class NullWhereClauseTest {
+
+	@Test
+	public void testIt(EntityManagerFactoryScope scope) {
+		scope.inTransaction(
+				entityManager ->
+						entityManager.persist( new Person( 1, "Andrea" ) )
+		);
+	}
+
+	@Entity
+	@Table(name = "person")
+	@Where(clause = "`used` IS NULL")
+	public static class Person {
+		@Id
+		private Integer id;
+
+		private String name;
+
+		private String used;
+
+		public Person() {
+			super();
+		}
+
+		public Person(Integer id, String name) {
+			this.id = id;
+			this.name = name;
+		}
+	}
+}