net.sf.farrago.namespace.mdr
Class MedMdrNameDirectory

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

All Implemented Interfaces:

FarragoMedNameDirectory

 class MedMdrNameDirectory
extends MedAbstractNameDirectory

MedMdrNameDirectory implements the FarragoMedNameDirectory interface by mapping the package structure of an MDR repository.

Version:

$Id: //open/dev/farrago/src/net/sf/farrago/namespace/mdr/MedMdrNameDirectory.java#22 $

Author:

John V. Sichi

Field Summary

(package private) RefPackage	rootPackage
(package private) MedMdrDataServer	server

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

BOOLEAN_CHOICES_DEFAULT_FALSE, BOOLEAN_CHOICES_DEFAULT_TRUE, EMPTY_DRIVER_PROPERTIES

Constructor Summary

MedMdrNameDirectory(MedMdrDataServer server, RefPackage rootPackage)
Instantiates a MedMdrNameDirectory.

Method Summary

private RelDataType	computeRowType(FarragoTypeFactory typeFactory, RefClass refClass)
FarragoMedColumnSet	lookupColumnSet(FarragoTypeFactory typeFactory, String foreignName, String[] localName) Looks up a FarragoMedColumnSet by name.
(package private) FarragoMedColumnSet	lookupColumnSetAndImposeType(FarragoTypeFactory typeFactory, String[] foreignName, String[] localName, RelDataType rowType)
(package private) RefBaseObject	lookupRefBaseObject(String[] foreignName)
(package private) RefClass	lookupRefClass(String[] foreignName) Looks up a RefClass from its qualified name.
(package private) RefPackage	lookupRefPackage(String[] names, int prefix)
FarragoMedNameDirectory	lookupSubdirectory(String foreignName) Looks up an immediate subdirectory by name.

Methods inherited from class net.sf.farrago.namespace.impl.MedAbstractNameDirectory

newImportedColumnSet, queryMetadata

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

Field Detail

server

final MedMdrDataServer server

rootPackage

final RefPackage rootPackage

Constructor Detail

MedMdrNameDirectory

MedMdrNameDirectory(MedMdrDataServer server,
                    RefPackage rootPackage)

Instantiates a MedMdrNameDirectory.

Parameters:

server - MedMdrDataServer from which this directory was opened

rootPackage - root package from which to map names in repository; so, when a table name like x.y.z is looked up, rootPackage will be searched for subpackage x, which will be searched for subpackage y, which will be searched for class z

Method Detail

lookupRefPackage

RefPackage lookupRefPackage(String[] names,
                            int prefix)

lookupRefClass

RefClass lookupRefClass(String[] foreignName)

Looks up a RefClass from its qualified name.

Parameters:

foreignName - name of this class relative to this directory's root package

lookupRefBaseObject

RefBaseObject lookupRefBaseObject(String[] foreignName)

lookupColumnSet

public FarragoMedColumnSet lookupColumnSet(FarragoTypeFactory typeFactory,
                                           String foreignName,
                                           String[] localName)
                                    throws SQLException

Description copied from interface: FarragoMedNameDirectory

Looks up a FarragoMedColumnSet by name. This method supports Farrago's capability to reference a foreign table directly without having to create local metadata about it.

Parameters:

typeFactory - FarragoTypeFactory to use for defining types

foreignName - simple name of foreign ColumnSet to lookup as a direct child of this directory

localName - compound identifier by which FarragoMedColumnSet will be referenced locally

Returns:

FarragoMedColumnSet, or null if none found

Throws:

SQLException - if metadata access is unsuccessful

lookupColumnSetAndImposeType

FarragoMedColumnSet lookupColumnSetAndImposeType(FarragoTypeFactory typeFactory,
                                                 String[] foreignName,
                                                 String[] localName,
                                                 RelDataType rowType)
                                           throws SQLException

Throws:

SQLException

computeRowType

private RelDataType computeRowType(FarragoTypeFactory typeFactory,
                                   RefClass refClass)

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

Overrides:

lookupSubdirectory in class MedAbstractNameDirectory

Parameters:

foreignName - identifier for subdirectory

Returns:

subdirectory, or null if none found

Throws:

SQLException - if metadata access is unsuccessful