org.dlese.dpc.vocab
Class DLESEMetadataVocabTracker

java.lang.Object
  org.dlese.dpc.vocab.DLESEMetadataVocabTracker

All Implemented Interfaces:

MetadataVocabTracker

public class DLESEMetadataVocabTracker

extends Object

implements MetadataVocabTracker

DLESE metadata vocabulary tracker (Id assignment, tracking of changes). This implementation uses an SQL database.

Author:

Ryan Deardorff

Constructor Summary

DLESEMetadataVocabTracker(MetadataVocab vocab, String sqlDriver, String sqlURL, String sqlUser, String sqlPassword)
Constructor for the DLESEMetadataVocabTracker object

Method Summary

String	assignNewSystemId(String metadataFieldId, String metadataValue) Assign a unique system Id for a new vocabulary value.
void	closeConnection() Close the connection to SQL database
String	getId(String metadataFieldId, String metadataValue) Does the current fieldId/value pair already exist in the database? If so, return the Id, if not, return "" (empty string).
boolean	isUsingDatabase() Is the system using this tracker connected to a database that handles ensuring Id consistency and UI label changes?
void	registerUiLabels(HashMap uiSystems, HashMap uiLabelOfSystemIds) Step through all of the current (non-retired) values in the vocab_values table and examine the UI labels, comparing what is in the DB with what was just loaded from the XML

Methods inherited from class java.lang.Object

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

Constructor Detail

DLESEMetadataVocabTracker

public DLESEMetadataVocabTracker(MetadataVocab vocab,
                                 String sqlDriver,
                                 String sqlURL,
                                 String sqlUser,
                                 String sqlPassword)

Constructor for the DLESEMetadataVocabTracker object

Parameters:

vocab - MetadataVocab instance using this tracker

sqlDriver - driver class for SQL DB

sqlURL - URL of SQL DB

sqlUser - SQL user

sqlPassword - SQL user password

Method Detail

isUsingDatabase

public boolean isUsingDatabase()

Is the system using this tracker connected to a database that handles ensuring Id consistency and UI label changes?

Specified by:

isUsingDatabase in interface MetadataVocabTracker

closeConnection

public void closeConnection()

Close the connection to SQL database

Specified by:

closeConnection in interface MetadataVocabTracker

assignNewSystemId

public String assignNewSystemId(String metadataFieldId,
                                String metadataValue)

Assign a unique system Id for a new vocabulary value. ALL Ids will start with 0, so that Lucene * queries will be possible.

Specified by:

assignNewSystemId in interface MetadataVocabTracker

Parameters:

metadataFieldId - field encoded Id

metadataValue - metadata value name

Returns:

the new Id

getId

public String getId(String metadataFieldId,
                    String metadataValue)

Does the current fieldId/value pair already exist in the database? If so, return the Id, if not, return "" (empty string).

Specified by:

getId in interface MetadataVocabTracker

Parameters:

metadataFieldId - encoded field Id

metadataValue - metadata value name

registerUiLabels

public void registerUiLabels(HashMap uiSystems,
                             HashMap uiLabelOfSystemIds)

Step through all of the current (non-retired) values in the vocab_values table and examine the UI labels, comparing what is in the DB with what was just loaded from the XML

Specified by:

registerUiLabels in interface MetadataVocabTracker

Parameters:

uiSystems -

uiLabelOfSystemIds -