Configuration.generateSchemaCreationScript（） 在 Hibernate 5 中去了哪里

多亏了 Vlad 和 Gunnar 的回答，我设法通过新的配置 API 找到了自己的方式，以生成具有以下等效的导出逻辑。当然，历史表明这个API会再次中断，所以一定要选择合适的版本：

休眠 5.2：

MetadataSources metadata = new MetadataSources(
    new StandardServiceRegistryBuilder()
        .applySetting("hibernate.dialect", "org.hibernate.dialect.H2Dialect")
        .applySetting("javax.persistence.schema-generation-connection", connection)
        .build());

// [...] adding annotated classes to metadata here...
metadata.addAnnotatedClass(...);

SchemaExport export = new SchemaExport();
export.create(EnumSet.of(TargetType.DATABASE), metadata.buildMetadata());

休眠 5.2（无警告）：

以上将产生一些令人讨厌的警告，这些警告可以忽略：

Okt 20， 2016 2：57：16 PM org.hibernate.engine.jdbc.connections.internal.ConnectionProviderInitiator initiateService
WARN： HHH000181： 未遇到适当的连接提供程序，假设应用程序将提供连接
Okt 20， 2016 2：57：16 PM org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator initiateService
WARN： HHH000342： 无法获取查询元数据的连接： 应用程序必须提供 JDBC 连接

...或者您可以通过将以下内容黑客入侵到设置中来绕过它们（在我看来，这不应该是必需的）ConnectionProvider

        .applySetting(AvailableSettings.CONNECTION_PROVIDER, new ConnectionProvider() {
            @Override
            public boolean isUnwrappableAs(Class unwrapType) {
                return false;
            }
            @Override
            public <T> T unwrap(Class<T> unwrapType) {
                return null;
            }
            @Override
            public Connection getConnection() {
                return connection; // Interesting part here
            }
            @Override
            public void closeConnection(Connection conn) throws SQLException {}

            @Override
            public boolean supportsAggressiveRelease() {
                return true;
            }
        })

休眠 5.0：

MetadataSources metadata = new MetadataSources(
    new StandardServiceRegistryBuilder()
        .applySetting("hibernate.dialect", "org.hibernate.dialect.H2Dialect")
        .build());

// [...] adding annotated classes to metadata here...
metadata.addAnnotatedClass(...);

SchemaExport export = new SchemaExport(
    (MetadataImplementor) metadata.buildMetadata(),
    connection // pre-configured Connection here
);
export.create(true, true);

休眠 4：

提醒一下，这是在Hibernate 4中的工作原理：

Configuration configuration = new Configuration()
    .setProperty("hibernate.dialect", "org.hibernate.dialect.H2Dialect");

// [...] adding annotated classes to metadata here...
configuration.addAnnotatedClass(...);

configuration.generateSchemaCreationScript(
    Dialect.getDialect(configuration.getProperties()));
SchemaExport export = new SchemaExport(configuration, connection);
export.create(true, true);

新初始化的一个示例位于 SchemaExportTask 中：SchemaExport

final BootstrapServiceRegistry bsr = new BootstrapServiceRegistryBuilder().build();

final MetadataSources metadataSources = new MetadataSources( bsr );
final StandardServiceRegistryBuilder ssrBuilder = new StandardServiceRegistryBuilder( bsr );

if ( configurationFile != null ) {
    ssrBuilder.configure( configurationFile );
}
if ( propertiesFile != null ) {
    ssrBuilder.loadProperties( propertiesFile );
}
ssrBuilder.applySettings( getProject().getProperties() );

for ( String fileName : getFiles() ) {
    if ( fileName.endsWith(".jar") ) {
        metadataSources.addJar( new File( fileName ) );
    }
    else {
        metadataSources.addFile( fileName );
    }
}


final StandardServiceRegistryImpl ssr = (StandardServiceRegistryImpl) ssrBuilder.build();
final MetadataBuilder metadataBuilder = metadataSources.getMetadataBuilder( ssr );

ClassLoaderService classLoaderService = bsr.getService( ClassLoaderService.class );
if ( implicitNamingStrategy != null ) {
    metadataBuilder.applyImplicitNamingStrategy(
            (ImplicitNamingStrategy) classLoaderService.classForName( implicitNamingStrategy ).newInstance()
    );
}
if ( physicalNamingStrategy != null ) {
    metadataBuilder.applyPhysicalNamingStrategy(
            (PhysicalNamingStrategy) classLoaderService.classForName( physicalNamingStrategy ).newInstance()
    );
}

return new SchemaExport( (MetadataImplementor) metadataBuilder.build() )
    .setHaltOnError( haltOnError )
    .setOutputFile( outputFile.getPath() )
    .setDelimiter( delimiter );

当然，您可以根据需要进行自定义。