Package org.tentackle.db

Database Abstraction Layer.

See:
Description

Interface Summary

CommitTxRunnable	A Runnable that gets invoked before commit.
ConnectionManager	Connection Manager for local connections. JDBC connections are never used directly.
DbCursor<T extends DbObject>	A database cursor. Provides a cursor operating on a set of data objects retrieved from a server.
DbObject.CopyAllToDbLogger	The logger for DbObject.copyAllToDb(org.tentackle.db.Db, boolean, org.tentackle.db.DbObject.CopyAllToDbLogger).
DbPool	A pool of logical Db connections.
ErrorHandler	Interface for an error handler, i.e.
IdSource	Abstraction for a generic source of ID numbers.
IdSourceConnector	The connector establishes a connection to an IdSource.
ModificationThread.SerialRunnable	Special runnable invoked from within the ModificationThread whenever a serial on a table has changed.
RollbackTxRunnable	A Runnable that gets invoked before rollback.

Class Summary

Binary	Datatype for storing arbitrary (binary) data in a database.
CachedDbCursor<T extends DbObject>	A caching cursor.
Db	A logical database connection.
DbGlobal	Db globals.
DbObject	Database object.
DbObject.IdComparator<T extends DbObject>	Compares the IDs.
DbObject.NameComparator<T extends DbObject>	Compares the string representation (toString()).
DbObject.NameIdComparator<T extends DbObject>	Compares the names + IDs.
DbObjectClassVariables	Holds static class variables for classes derived from DbObject.
DbOperation	A DbOperation provides methods that are not part of DbObjects and is associated to a Db-connection.
DbPreferences	Database backend for the Preferences API. Tentackle preferences are stored in a database rather than a file(unix) or registry(windows).
DbPreferencesFactory	Factory for DbPreferences.
DbPreferencesKey	A preferences key/value pair stored in the database.
DbPreferencesNode	Preferences Node stored in the database.
DefaultConnectionManager	The default implementation of a connection manager. Each Db will get its own physical connection.
DefaultDbPool	An implementation of a database pool. It allows min/max sizes, fixed increments and timeouts for unused instances.
DefaultErrorHandler	The default database error handler.
IdSourceConfigurator	Configurator for an IdSource.
LegacyDbObject	Abstract class defining some essential basics for objects *not* derived from DbObject. Useful to access non-tentackle-based database tables.
LegacyDbObjectClassVariables	Minimal class variables for LegacyDbObjects.
Locales	Localized strings for the db package.
ManagedConnection	A jdbc connection managed by the ConnectionManager. The connection provides some additional features such as a prepared statement cache and translates SQLExceptions to DbRuntimeExceptions.
ModificationCounter	Counter to track modifications for a class/table. There is one ModificationCounter-object per DbObject-class *AND* Db-connection.
ModificationLog	Logging for object modifications. Modifications to DbObjects can be logged to a so-called modification log (aka: modlog). Most applications will use the modlog for asynchroneous database coupling.
ModificationThread	Thread to monitor the modification table. Runs on a separate db connection and invokes runnables if modifications are detected.
MpxConnectionManager	Multiplexing connection manager. A connection manager for applications with a large number of Db instances, e.g.
ObjectId	A DbObject implementing IdSource used to create unique object IDs.
OracleHelper	Oracle-specific utility methods.
PartialDbObject	Partial implementation of a DbObject that is an abstract super class in a table-per-class mapping.
PooledPreparedStatement	Pooled prepared statement.
PreparedStatementWrapper	A wrapper for prepared statements. Will catch and report SQLExceptions and keep track of being used only once after Db.getPreparedStatement(int).
Query	A database query. Combines the generation of an sql-string and parameter set for the ResultSetWrapper.
ResultSetWrapper	A wrapper for ResultSets.
SimpleDbCursor<T extends DbObject>	A simple implementation of a DbCursor. The cursor operates on a ResultSetWrapper for local connections and on a RemoteDbCursor for remote connections to an application server.
SqlHelper	Some common methods for SQL-Processing.
StatementWrapper	A wrapper for sql statements. Will catch and report SQLExceptions and keep track of being used only once after Db.createStatement().
TableSerialExpirationBacklog	Keeps a backlog of expiration sets. Used in RMI-servers to reduce database roundtrips for clients requesting the expiration info for their local caches.
UserInfo	Information about the user connecting to a database.

Exception Summary

DbRuntimeException

Database runtime exception.

Package org.tentackle.db Description

Database Abstraction Layer.

Provides the persistence layer for java objects, the so-called O/R-mapping.