Package edu.pdx.cs410J.di

Class JaxbDatabase

java.lang.Object

edu.pdx.cs410J.di.JaxbDatabase

Direct Known Subclasses:

BookDatabase, CreditCardDatabase

public abstract class JaxbDatabase
extends Object

The superclass of classes that store objects serialized to a file using JAXB

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	JaxbDatabase(File directory, String fileName, Class<?>... jaxbClasses)

Method Summary

Modifier and Type	Method	Description
File	getDatabaseFile()
protected Object	readFile()	Read the XML data file and returns the unmarshalled object
protected void	writeXml(Object xml)	Writes an object as XML to the data file

Methods inherited from class java.lang.Object

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

Constructor Details

JaxbDatabase

protected JaxbDatabase(File directory,
 String fileName,
 Class<?>... jaxbClasses)
                throws IOException,
jakarta.xml.bind.JAXBException

Throws:

IOException

jakarta.xml.bind.JAXBException

Method Details

writeXml

protected void writeXml(Object xml)

Writes an object as XML to the data file

Parameters:

xml - The object to marshal

getDatabaseFile

public File getDatabaseFile()

readFile

protected Object readFile()
                   throws jakarta.xml.bind.JAXBException

Read the XML data file and returns the unmarshalled object

Returns:

The object in the XML file or null if the file doesn't exist

Throws:

jakarta.xml.bind.JAXBException - if we can't read the file