Package org.openquark.cal.foreignsupport.module.DataGems

The datagems package is for Java-side implementations of standard black-box 'data access' primitives.

See:
Description

Interface Summary

JDBCPreparedStatement
QueryResult	A common interface for accessing resultset information.

Class Summary

DataContext
JDBC	The JDBC class provides primitive foreign functions for SQL database access Creation: Aug 15, 2002 at 10:52:13 AM
JDBC.Connection	Wrapper around a JDBC Connection to hold specfic connection-oriented properties for JDBC use in Quark.
JDBC.Connection.JDBCPreparedStatementImpl	A standard implementation of the JDBCPreparedStatement interface.
JDBC.Connection.JDBCQueryResult	QueryResult is a wrapper around a JDBC result set.
RecordPlaceholder	RecordPlaceholder represents a single resultset record within a QueryResult.
RestartableQueryResults	This class adds random access support to a forward-only resultset.

Exception Summary

DatabaseException

An exception used by the various data-access foreign functions.

Package org.openquark.cal.foreignsupport.module.DataGems Description

The datagems package is for Java-side implementations of standard black-box 'data access' primitives. These are then exposed to the CAL language through foreign functions. It is important that CAL is only extended through the foreign function interface in this way when there is no advantage to having a CAL representation of the algorithm (for inspection, customization or extension). Routines added through the foreign interface must be considered 'core' as their Java implementation has to follow their CAL declarations. However, general purpose primitives are suitable for this treatment, and data access is essentially a set of IO operations.