<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD//EN"
        "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <property name="connection.url">jdbc:postgresql://localhost:5432/esea</property>
        <property name="connection.driver_class">org.postgresql.Driver</property>
        <mapping class="ais.TesttableEntity"/>
        <mapping resource="ais/TesttableEntity.hbm.xml"/>
        <!-- <property name="connection.username"/> -->
        <!-- <property name="connection.password"/> -->

        <!-- DB schema will be updated if needed -->
        <!-- <property name="hbm2ddl.auto">update</property> -->
    </session-factory>
</hibernate-configuration>

public static void main(final String[] args) throws Exception {
    final Session session = getSession();
    try {
        System.out.println("querying all the managed entities...");
        final Metamodel metamodel = session.getSessionFactory().getMetamodel();
        for (EntityType<?> entityType : metamodel.getEntities()) {
            final String entityName = entityType.getName();
            final Query query = session.createQuery("from " + entityName);
            System.out.println("executing: " + query.getQueryString());
            for (Object o : query.list()) {
                System.out.println("  " + o);
            }
        }
    } finally {
        session.close();
    }

Exception in thread "main" java.lang.ExceptionInInitializerError
    at Main.<clinit>(Main.java:22)
Caused by: org.hibernate.boot.InvalidMappingException: Could not parse mapping document: ais/TesttableEntity.hbm.xml (RESOURCE)
    at org.hibernate.boot.jaxb.internal.InputStreamXmlSource.doBind(InputStreamXmlSource.java:46)
    at org.hibernate.boot.jaxb.internal.UrlXmlSource.doBind(UrlXmlSource.java:36)
    at org.hibernate.boot.spi.XmlMappingBinderAccess.bind(XmlMappingBinderAccess.java:59)
    at org.hibernate.boot.MetadataSources.addResource(MetadataSources.java:274)
    at org.hibernate.boot.cfgxml.spi.MappingReference.apply(MappingReference.java:70)
    at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:413)
    at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:87)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:691)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:726)
    at Main.<clinit>(Main.java:20)
Caused by: org.hibernate.boot.MappingException: Unable to perform unmarshalling at line number 8 and column 46. Message: cvc-complex-type.2.4.a: Invalid content was found starting with element '{"http://www.hibernate.org/xsd/orm/hbm":property}'. One of '{"http://www.hibernate.org/xsd/orm/hbm":meta, "http://www.hibernate.org/xsd/orm/hbm":tuplizer, "http://www.hibernate.org/xsd/orm/hbm":subselect, "http://www.hibernate.org/xsd/orm/hbm":cache, "http://www.hibernate.org/xsd/orm/hbm":natural-id-cache, "http://www.hibernate.org/xsd/orm/hbm":synchronize, "http://www.hibernate.org/xsd/orm/hbm":comment, "http://www.hibernate.org/xsd/orm/hbm":id, "http://www.hibernate.org/xsd/orm/hbm":composite-id}' is expected. : origin(ais/TesttableEntity.hbm.xml)
    at org.hibernate.boot.jaxb.internal.AbstractBinder.jaxb(AbstractBinder.java:177)
    at org.hibernate.boot.jaxb.internal.MappingBinder.doBind(MappingBinder.java:61)
    at org.hibernate.boot.jaxb.internal.AbstractBinder.doBind(AbstractBinder.java:102)
    at org.hibernate.boot.jaxb.internal.AbstractBinder.bind(AbstractBinder.java:57)
    at org.hibernate.boot.jaxb.internal.InputStreamXmlSource.doBind(InputStreamXmlSource.java:43)
    ... 9 more