将 Hibernate 升级到 5.4.1 后如何导出架构？

Question

我最近将 Hibernate 从 4.3.7 更新到 5.4.1，并且SchemaExport自 5.1 以来 API 发生了变化。此代码现在显示编译问题（在SchemaExport构造函数和execute方法上）。/** * Method to generate a SQL script which aim is to create SQL tables for the * entities indicated as parameters. */private void generateScript(Class<?>... classes) {    Configuration configuration = new Configuration();    configuration.setProperty(Environment.DIALECT, entityManagerFactory.getProperties().get(DIALECT_PROPERTY).toString());    for (Class<?> entityClass : classes) {        configuration.addAnnotatedClass(entityClass);    }    SchemaExport schemaExport = new SchemaExport(configuration);    schemaExport.setDelimiter(SCRIPT_DELIMITER);    schemaExport.setOutputFile(getScriptPath());    schemaExport.setFormat(true);    boolean consolePrint = false;    boolean exportInDatabase = false;    schemaExport.execute(consolePrint, exportInDatabase, false, true);}我已经看到与此问题相关的其他问题，但没有足够具体的内容来帮助我重写此函数。

Answer 1

这是我所做的并且有效：

private void genererScript(Class<?>... classes) {

    StandardServiceRegistry standardRegistry = new StandardServiceRegistryBuilder()

            .applySetting(Environment.DIALECT, entityManagerFactory.getProperties().get(DIALECT_PROPERTY).toString())

            .build();

    MetadataSources sources = new MetadataSources( standardRegistry );

    for (Class<?> entityClass : classes) {

        sources.addAnnotatedClass(entityClass);

    }

    MetadataImplementor metadata = (MetadataImplementor) sources

            .getMetadataBuilder()

            .build();

    EnumSet<TargetType> targetTypes = EnumSet.of(TargetType.SCRIPT);

    try {

        Files.delete(Paths.get(getScriptPath()));

    } catch (IOException e) {

        /*

         * The file did not exist...

         * we do nothing.

         */

    }

    SchemaExport schemaExport = new SchemaExport();

    schemaExport.setDelimiter(SCRIPT_DELIMITER);

    schemaExport.setOutputFile(getScriptPath());

    schemaExport.setFormat(true);

    schemaExport.createOnly(targetTypes, metadata);

}