public SchemaExport(Configuration cfg) throws HibernateException 
{
	                           	 
		this( cfg, cfg.getProperties() );
}

Create a schema exporter for the given Configuration

Parameters:

cfg - The configuration from which to build a schema export.

Throws:

HibernateException - Indicates problem preparing for schema export.

 public SchemaExport(Configuration cfg,
    Settings settings) throws HibernateException 
{
		dialect = settings.getDialect();
		connectionHelper = new SuppliedConnectionProviderConnectionHelper( settings.getConnectionProvider() );
		dropSQL = cfg.generateDropSchemaScript( dialect );
		createSQL = cfg.generateSchemaCreationScript( dialect );
		sqlStatementLogger = settings.getSqlStatementLogger();
		formatter = ( sqlStatementLogger.isFormatSql() ? FormatStyle.DDL : FormatStyle.NONE ).getFormatter();
}

Create a schema exporter for the given Configuration and given settings

Parameters:

cfg - The configuration from which to build a schema export.

settings - The 'parsed' settings.

Throws:

HibernateException - Indicates problem preparing for schema export.

 public SchemaExport(Configuration cfg,
    Properties properties) throws HibernateException 
{
		dialect = Dialect.getDialect( properties );
		Properties props = new Properties();
		props.putAll( dialect.getDefaultProperties() );
		props.putAll( properties );
		connectionHelper = new ManagedProviderConnectionHelper( props );
		dropSQL = cfg.generateDropSchemaScript( dialect );
		createSQL = cfg.generateSchemaCreationScript( dialect );
		formatter = ( PropertiesHelper.getBoolean( Environment.FORMAT_SQL, props ) ? FormatStyle.DDL : FormatStyle.NONE ).getFormatter();
}

Create a schema exporter for the given Configuration, with the given database connection properties.

Parameters:

cfg - The configuration from which to build a schema export.

properties - The properties from which to configure connectivity etc.

Throws:

HibernateException - Indicates problem preparing for schema export.

 public SchemaExport(Configuration cfg,
    Connection connection) throws HibernateException 
{
		this.connectionHelper = new SuppliedConnectionHelper( connection );
		dialect = Dialect.getDialect( cfg.getProperties() );
		dropSQL = cfg.generateDropSchemaScript( dialect );
		createSQL = cfg.generateSchemaCreationScript( dialect );
		formatter = ( PropertiesHelper.getBoolean( Environment.FORMAT_SQL, cfg.getProperties() ) ? FormatStyle.DDL : FormatStyle.NONE ).getFormatter();
}

Create a schema exporter for the given Configuration, using the supplied connection for connectivity.

Parameters:

cfg - The configuration to use.

connection - The JDBC connection to use.

Throws:

HibernateException - Indicates problem preparing for schema export.

 public  void create(boolean script,
    boolean export) 
{
		execute( script, export, false, false );
}

Run the schema creation script.

 public  void drop(boolean script,
    boolean export) 
{
		execute( script, export, true, false );
}

Run the drop schema script.

 public  void execute(boolean script,
    boolean export,
    boolean justDrop,
    boolean justCreate) 
{
		log.info( "Running hbm2ddl schema export" );
		Connection connection = null;
		Writer outputFileWriter = null;
		Reader importFileReader = null;
		Statement statement = null;
		exceptions.clear();
		try {
			try {
				InputStream stream = ConfigHelper.getResourceAsStream( importFile );
				importFileReader = new InputStreamReader( stream );
			}
			catch ( HibernateException e ) {
				log.debug( "import file not found: " + importFile );
			}
			if ( outputFile != null ) {
				log.info( "writing generated schema to file: " + outputFile );
				outputFileWriter = new FileWriter( outputFile );
			}
			if ( export ) {
				log.info( "exporting generated schema to database" );
				connectionHelper.prepare( true );
				connection = connectionHelper.getConnection();
				statement = connection.createStatement();
			}
			if ( !justCreate ) {
				drop( script, export, outputFileWriter, statement );
			}
			if ( !justDrop ) {
				create( script, export, outputFileWriter, statement );
				if ( export && importFileReader != null ) {
					importScript( importFileReader, statement );
				}
			}
			log.info( "schema export complete" );
		}
		catch ( Exception e ) {
			exceptions.add( e );
			log.error( "schema export unsuccessful", e );
		}
		finally {
			try {
				if ( statement != null ) {
					statement.close();
				}
				if ( connection != null ) {
					connectionHelper.release();
				}
			}
			catch ( Exception e ) {
				exceptions.add( e );
				log.error( "Could not close connection", e );
			}
			try {
				if ( outputFileWriter != null ) {
					outputFileWriter.close();
				}
				if ( importFileReader != null ) {
					importFileReader.close();
				}
			}
			catch ( IOException ioe ) {
				exceptions.add( ioe );
				log.error( "Error closing output file: " + outputFile, ioe );
			}
		}
}

 public List getExceptions() 
{
		return exceptions;
}

Returns a List of all Exceptions which occured during the export.

 public static  void main(String[] args) 
{
		try {
			Configuration cfg = new Configuration();
			boolean script = true;
			boolean drop = false;
			boolean create = false;
			boolean halt = false;
			boolean export = true;
			String outFile = null;
			String importFile = "/import.sql";
			String propFile = null;
			boolean format = false;
			String delim = null;
			for ( int i = 0; i <  args.length; i++ ) {
				if ( args[i].startsWith( "--" ) ) {
					if ( args[i].equals( "--quiet" ) ) {
						script = false;
					}
					else if ( args[i].equals( "--drop" ) ) {
						drop = true;
					}
					else if ( args[i].equals( "--create" ) ) {
						create = true;
					}
					else if ( args[i].equals( "--haltonerror" ) ) {
						halt = true;
					}
					else if ( args[i].equals( "--text" ) ) {
						export = false;
					}
					else if ( args[i].startsWith( "--output=" ) ) {
						outFile = args[i].substring( 9 );
					}
					else if ( args[i].startsWith( "--import=" ) ) {
						importFile = args[i].substring( 9 );
					}
					else if ( args[i].startsWith( "--properties=" ) ) {
						propFile = args[i].substring( 13 );
					}
					else if ( args[i].equals( "--format" ) ) {
						format = true;
					}
					else if ( args[i].startsWith( "--delimiter=" ) ) {
						delim = args[i].substring( 12 );
					}
					else if ( args[i].startsWith( "--config=" ) ) {
						cfg.configure( args[i].substring( 9 ) );
					}
					else if ( args[i].startsWith( "--naming=" ) ) {
						cfg.setNamingStrategy(
								( NamingStrategy ) ReflectHelper.classForName( args[i].substring( 9 ) )
										.newInstance()
						);
					}
				}
				else {
					String filename = args[i];
					if ( filename.endsWith( ".jar" ) ) {
						cfg.addJar( new File( filename ) );
					}
					else {
						cfg.addFile( filename );
					}
				}
			}
			if ( propFile != null ) {
				Properties props = new Properties();
				props.putAll( cfg.getProperties() );
				props.load( new FileInputStream( propFile ) );
				cfg.setProperties( props );
			}
			SchemaExport se = new SchemaExport( cfg )
					.setHaltOnError( halt )
					.setOutputFile( outFile )
					.setImportFile( importFile )
					.setDelimiter( delim );
			if ( format ) {
				se.setFormat( true );
			}
			se.execute( script, export, drop, create );
		}
		catch ( Exception e ) {
			log.error( "Error creating schema ", e );
			e.printStackTrace();
		}
}

 public SchemaExport setDelimiter(String delimiter) 
{
		this.delimiter = delimiter;
		return this;
}

Set the end of statement delimiter

 public SchemaExport setFormat(boolean format) 
{
		this.formatter = ( format ? FormatStyle.DDL : FormatStyle.NONE ).getFormatter();
		return this;
}

Should we format the sql strings?

 public SchemaExport setHaltOnError(boolean haltOnError) 
{
		this.haltOnError = haltOnError;
		return this;
}

Should we stop once an error occurs?

 public SchemaExport setImportFile(String filename) 
{
		importFile = filename;
		return this;
}

An import file, containing raw SQL statements to be executed.

 public SchemaExport setOutputFile(String filename) 
{
		outputFile = filename;
		return this;
}

For generating a export script file, this is the file which will be written.