Hibernate 5. Generate SQL DDL into file

Question

I tried using this class:

Hibernate/JPA: Check generated sql before updating DB Schema (like .NET EF migrations)

I have the following code:

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Answer 1

The solution of felix don't work anymore on hibernate 5.2 here is a version which is compatible

private void generate(Class dialect, String directory, String... packagesName) throws Exception {

    MetadataSources metadata = new MetadataSources(
            new StandardServiceRegistryBuilder()
                    .applySetting("hibernate.dialect", dialect.getName())
                    .build());

    for (String packageName : packagesName) {
        LOG.info("packageName: " + packageName);
        for (Class clazz : getClasses(packageName)) {
            LOG.info("Class: " + clazz);
            metadata.addAnnotatedClass(clazz);
        }
    }

    MetadataImplementor metadataImplementor = (MetadataImplementor) metadata.buildMetadata();
    SchemaExport export = new SchemaExport();

    export.setDelimiter(";");
    String filename = directory + "ddl_" + dialect.getSimpleName().toLowerCase() + ".sql";
    export.setOutputFile(filename);
    export.setFormat(true);

    //can change the output here
    EnumSet enumSet = EnumSet.of(TargetType.STDOUT);
    export.execute(enumSet, SchemaExport.Action.CREATE, metadataImplementor);
}