downey
Class ReadOnlyDB

java.lang.Object
  downey.ErrorStore
      downey.SimpleDB
          downey.ReadOnlyDB

public class ReadOnlyDB

extends SimpleDB

This class allows for read access to a simple database. It is in a package named downey

The database is stored as a HashMap, so it can store any object. There are some helper functions to assist for changing a String[] to an ArrayList and from an ArrayList to a String[].

Field Summary

Fields inherited from class downey.SimpleDB

isOpen, m_database, m_fileName

Fields inherited from class downey.ErrorStore

m_strError

Constructor Summary

ReadOnlyDB()

Method Summary

void	eraseDatabase() Erasing is disabled in this class.
void	updateRecord(java.lang.String key, java.lang.Object obj) Update is disabled in this class.

Methods inherited from class downey.SimpleDB

getFileName, init, init, isError, keyIterator, makeArray, makeList, openDatabase, readRecord, saveDatabase, setFileName, valueIterator

Methods inherited from class downey.ErrorStore

addError, clearError, getError, setError

Methods inherited from class java.lang.Object

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

Constructor Detail

ReadOnlyDB

public ReadOnlyDB()

Method Detail

updateRecord

public void updateRecord(java.lang.String key,
                         java.lang.Object obj)

Update is disabled in this class.

Overrides:

updateRecord in class SimpleDB

Parameters:

key - The string used to access that database

obj - The object to be added to the database

It is not necessary to cast the parameter to any type, since all objects are derived from Object.

m_database.updateRecord("fred", record);

eraseDatabase

public void eraseDatabase()

Erasing is disabled in this class.

Overrides:

eraseDatabase in class SimpleDB