net.sf.farrago.namespace.impl
Class MedAbstractNameDirectory

java.lang.Object
  net.sf.farrago.plugin.FarragoAbstractPluginBase
      net.sf.farrago.namespace.impl.MedAbstractBase
          net.sf.farrago.namespace.impl.MedAbstractNameDirectory

All Implemented Interfaces:

FarragoMedNameDirectory

Direct Known Subclasses:

FlatFileNameDirectory, MedJdbcNameDirectory, MedMdrNameDirectory, MedMockNameDirectory

public abstract class MedAbstractNameDirectory
extends MedAbstractBase
implements FarragoMedNameDirectory

MedAbstractNameDirectory is an abstract base class for implementations of the FarragoMedNameDirectory interface.

Version:

$Id: //open/dev/farrago/src/net/sf/farrago/namespace/impl/MedAbstractNameDirectory.java#14 $

Author:

John V. Sichi

Field Summary

Fields inherited from class net.sf.farrago.plugin.FarragoAbstractPluginBase

BOOLEAN_CHOICES_DEFAULT_FALSE, BOOLEAN_CHOICES_DEFAULT_TRUE, EMPTY_DRIVER_PROPERTIES

Constructor Summary

MedAbstractNameDirectory()

Method Summary

FarragoMedNameDirectory	lookupSubdirectory(String foreignName) Looks up an immediate subdirectory by name.
FemBaseColumnSet	newImportedColumnSet(FarragoRepos repos, String tableName) Creates a new instance of FemBaseColumnSet in the catalog to represent an imported table.
boolean	queryMetadata(FarragoMedMetadataQuery query, FarragoMedMetadataSink sink) Executes a query against the metadata contained by this directory.

Methods inherited from class net.sf.farrago.plugin.FarragoAbstractPluginBase

getBooleanProperty, getByteProperty, getDoubleProperty, getFloatProperty, getIntProperty, getLongProperty, getShortProperty, requireProperty

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.sf.farrago.namespace.FarragoMedNameDirectory

lookupColumnSet

Constructor Detail

MedAbstractNameDirectory

public MedAbstractNameDirectory()

Method Detail

lookupSubdirectory

public FarragoMedNameDirectory lookupSubdirectory(String foreignName)
                                           throws SQLException

Description copied from interface: FarragoMedNameDirectory

Looks up an immediate subdirectory by name.

Specified by:

lookupSubdirectory in interface FarragoMedNameDirectory

Parameters:

foreignName - identifier for subdirectory

Returns:

subdirectory, or null if none found

Throws:

SQLException - if metadata access is unsuccessful

queryMetadata

public boolean queryMetadata(FarragoMedMetadataQuery query,
                             FarragoMedMetadataSink sink)
                      throws SQLException

Description copied from interface: FarragoMedNameDirectory

Executes a query against the metadata contained by this directory. This method supports the SQL/MED IMPORT FOREIGN SCHEMA statement, and general metadata browsing.

NOTE: the supplied sink may be used to implement passive aborts by throwing an unchecked exception when an abort request is detected.

Specified by:

queryMetadata in interface FarragoMedNameDirectory

Parameters:

query - the query to execute

sink - target which receives the query results

Returns:

true if the query executed successfully; false if the requested query type was not supported

Throws:

SQLException - if metadata access is unsuccessful (but not if query is unsupported)

newImportedColumnSet

public FemBaseColumnSet newImportedColumnSet(FarragoRepos repos,
                                             String tableName)

Description copied from interface: FarragoMedNameDirectory

Creates a new instance of FemBaseColumnSet in the catalog to represent an imported table.

Specified by:

newImportedColumnSet in interface FarragoMedNameDirectory

Parameters:

repos - repository storing catalog

tableName - name of imported table

Returns:

new object in catalog