org.griphyn.vdl.directive
Class Connect

java.lang.Object
  org.griphyn.vdl.directive.Directive
      org.griphyn.vdl.directive.Connect

public class Connect

extends Directive

The class dynamically loads a databaseschema

See Also:

DatabaseSchema

Field Summary

Fields inherited from class org.griphyn.vdl.directive.Directive

m_logger, m_props, m_verbose

Constructor Summary

Connect()
Constructor

Method Summary

DatabaseSchema	connectDatabase(String schemaName) Connects the database backend.
DatabaseSchema	connectDatabase(String schemaName, String dbDriverName) Connects the database backend.

Methods inherited from class org.griphyn.vdl.directive.Directive

getLogger, getProperties, getVerbose, setLogger, setProperties, setVerbose

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Connect

public Connect()
        throws IOException,
               MissingResourceException

Constructor

Method Detail

connectDatabase

public DatabaseSchema connectDatabase(String schemaName)
                               throws ClassNotFoundException,
                                      IOException,
                                      NoSuchMethodException,
                                      InstantiationException,
                                      IllegalAccessException,
                                      InvocationTargetException

Connects the database backend. This is not done in the c'tor, because some apps don't need this heavyweight instructions.

Parameters:

schemaName - is the name of the schema class to load. This better be the fully-qualified name in-sync with properties.

Returns:

the schema class on success, null on non-exceptional failure. The result is to be cast to appropriate catalog classes.

Throws:

ClassNotFoundException

IOException

NoSuchMethodException

InstantiationException

IllegalAccessException

InvocationTargetException

See Also:

ChimeraProperties.getVDCSchemaName(), ChimeraProperties.getPTCSchemaName()

connectDatabase

public DatabaseSchema connectDatabase(String schemaName,
                                      String dbDriverName)
                               throws ClassNotFoundException,
                                      IOException,
                                      NoSuchMethodException,
                                      InstantiationException,
                                      IllegalAccessException,
                                      InvocationTargetException

Connects the database backend. This is not done in the c'tor, because some apps don't need this heavyweight instructions.

Parameters:

schemaName - is the name of the schema class to load. This better be the fully-qualified name in-sync with properties.

dbDriverName - is the name of the database driver

Returns:

the schema class on success, null on non-exceptional failure. The result is to be cast to appropriate catalog classes.

Throws:

ClassNotFoundException

IOException

NoSuchMethodException

InstantiationException

IllegalAccessException

InvocationTargetException

See Also:

ChimeraProperties.getVDCSchemaName(), ChimeraProperties.getPTCSchemaName()