Uses of Class
proper.database.ConnectorObject

Packages that use ConnectorObject

proper.database	All classes concerning Database access and traversal or related structures can be found here.
proper.relaggs	contains the core classes of RELAGGS, without the GUI components

Uses of ConnectorObject in proper.database

Subclasses of ConnectorObject in proper.database

class	ColumnLister This class retrieves a list of column names for a given table.
class	DatabaseLister Lists all available Databases on the given host
class	Dropper This class is just a convenient way for dropping tables.
class	Executor This class executes SQL-Statements (try-catch-wrapper to avoid long code).
class	ExecutorObject This abstract class is an ancestor to all classes that want to use an Executor instance.
class	Joiner This class can perform different kinds of joins: NATURAL, LEFT OUTER and RIGHT OUTER the two tables are joined via some keys like in SQL BEST before the join is performed the class checks whether a LEFT OUTER or a RIGHT OUTER join is better
class	Modifier A small helper class e.g.
class	Reader This class reads all the data from a given SQL table and creates WEKA instances from that. A verbose level of 2 prints also the SQL statements for retrieving the instances.
class	RelationDiscoverer This class discovers from a table all the tables that are dependent on it, i.e.
class	Sparser This class retrieves a certain percentage of data from a table.
class	TableLister This class retrieves a list of table names for the current database.
class	Writer This class is used for writing a table to an ARFF-file.

Uses of ConnectorObject in proper.relaggs

Subclasses of ConnectorObject in proper.relaggs

class

RelaggsStructure Title: RelaggsStructure Description: Stores the information about the attributes of an aggregated table. ChangeLog: FracPete (2004-05-28): changed data types in getAlterTableColumns to ANSI types INT and DOUBLE PRECISION

class

SqlEngine Title: SqlEngine Description: Connection to database system. Changelog: FracPete: LEFT OUTER JOIN introduced (optional) see setLeftOuterJoin FracPete: can use any index instead of primary key (optional) see setUseAnyIndex FracPete: can use specific index for aggregation (optional) see setUseIndex FracPete: list of tables to exclude from aggregation possible (optional) see setExcludedTables FracPete (2004-05-27): broke down STDDEV into aggregate functions, since implementations differ (MySQL: population, PostgreSQL: sample) see getStddev, USE_BUILTIN_STDDEV, USE_SAMPLE_STDDEV FracPete (2004-05-28): removed limitation for tables with no schema getTables returns only tables now (with PostgreSQL it also returned the Indices) uses DB-independent DATA_TYPE instead TYPE_NAME, see RelaggsAttribute LIMIT %ROWS% implemented, see getLimit implemented method that generates a CREATE TABLE statement from a SELECT, since "CREATE TABLE ...