com.zphinx.spine.data.impl
Class FileProxy

java.lang.Object
  com.zphinx.spine.data.AbstractDataProxy
      com.zphinx.spine.data.impl.FileProxy

public class FileProxy
extends AbstractDataProxy

FileProxy serves as a proxy for DataAccessObjects which require a file or a properties file for data persistence.

It automatically retrieves the file at a known file path and loads it into an AbstractFileDAO either as a byte[] array or as a properties object which can then be used directly by the client programmer.

Version:

1.0

copyright ©Zphinx Software Solutions

Author:

David Ladapo

Field Summary

Fields inherited from class com.zphinx.spine.data.AbstractDataProxy

DATA_DATABASE, DATA_EJB, DATA_HIBERNATE, DATA_JAVASPACE, DATA_LDAP, DATA_PROPERTIES_FILE

Constructor Summary

FileProxy()

Method Summary

void	close(DataAccessObject dao) Close and dispose of all opened resources.
protected DataAccessObject	open(Object obj1, String className, DAOInput daoCons) Open the datastore and fetch the correct type of persistence.

Methods inherited from class com.zphinx.spine.data.AbstractDataProxy

createDataAccessImpl, execute, getDataAccessObject, getInstance, getStoreType, init

Methods inherited from class java.lang.Object

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

Constructor Detail

FileProxy

public FileProxy()

Method Detail

open

protected DataAccessObject open(Object obj1,
                                String className,
                                DAOInput daoCons)

Open the datastore and fetch the correct type of persistence.

This method will initialize the file referenced at the stated path, load the file and save it in object format either as a properties file or as a byte[] array in AbstractFileDAO.

This can latter be retrieved by the client programmer who simply makes a call to AbstractFileDAO.getFileBytes() or AbstractFileDAO.getProperties() to retrieve the constituents of the file.

The developer does not need to write the object to the file system but must ensure that if changes are made to the object form of the file, these changes must be represented in the object form which this proxy will persist automatically.

Specified by:

open in class AbstractDataProxy

Parameters:

obj1 - Arbitary object to pass to this method

className - A String representing the type of DAO to create.

daoCons - The DaoConstructor passed to this object

Returns:

A suitable DataAccessObject object if the operation succeeds

Throws:

Throws - a SpineApplicationException if unable to load a the appropriate DataAbstract Object

See Also:

AbstractDataProxy.open(java.lang.Object, java.lang.String, com.zphinx.spine.vo.DAOInput)

close

public void close(DataAccessObject dao)

Close and dispose of all opened resources.

Persists the contents of the file or properties file back to the file system. Any changes made to the object obtained from AbstractFileDAO.getProperties() or AbstractFileDAO.getFileBytes() will be automatically persisted by this method.

Specified by:

close in class AbstractDataProxy

Parameters:

dao - The DataAccessObject associated with this proxy

Throws:

SpineApplicationException

See Also:

AbstractDataProxy.close(com.zphinx.spine.data.DataAccessObject)