Package com.pnfsoftware.jeb.core.dao.impl

Class ProjectFileStore

java.lang.Object

com.pnfsoftware.jeb.core.dao.impl.ProjectFileStore

All Implemented Interfaces:

IFileDatabase

public class ProjectFileStore
extends Object
implements IFileDatabase

A project store backed by the file system.

Constructor Summary

Constructors

Constructor	Description
ProjectFileStore(IFileStore fstore)

Method Summary

Modifier and Type	Method	Description
boolean	deleteFile(String key)	Delete a file.
IFileDatabaseReader	getDatabaseReader(String key)	Get a database record reader.
IFileDatabaseWriter	getDatabaseWriter(String key)	Get a database record writer.
File	getFileObject(String key)	Attempt to get the filesystem object backing this db file entry.
InputStream	getFileReader(String key)	Get an input stream reader for low-level reading from a file.
OutputStream	getFileWriter(String key)	Get an output stream reader for low-level writing to a file.
boolean	hasFile(String key)	Determine if the database contains the given file (the file must exist).
byte[]	loadFile(String key)	Retrieve the contents of a file.
boolean	saveFile(String key, byte[] data)	Store the contents of a file.

Methods inherited from class java.lang.Object

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

Constructor Details

ProjectFileStore

public ProjectFileStore(IFileStore fstore)

Method Details

hasFile

public boolean hasFile(String key)

Description copied from interface: IFileDatabase

Determine if the database contains the given file (the file must exist).

Specified by:

hasFile in interface IFileDatabase

Parameters:

key - file key

Returns:

presence indicator

saveFile

public boolean saveFile(String key,
 byte[] data)

Description copied from interface: IFileDatabase

Store the contents of a file.

Specified by:

saveFile in interface IFileDatabase

Parameters:

key - file key

data - file data

Returns:

success indicator

loadFile

public byte[] loadFile(String key)

Description copied from interface: IFileDatabase

Retrieve the contents of a file.

Specified by:

loadFile in interface IFileDatabase

Parameters:

key - file key

Returns:

file data, null on error

deleteFile

public boolean deleteFile(String key)

Description copied from interface: IFileDatabase

Delete a file.

Specified by:

deleteFile in interface IFileDatabase

Parameters:

key - file key

Returns:

success indicator

getFileObject

public File getFileObject(String key)

Description copied from interface: IFileDatabase

Attempt to get the filesystem object backing this db file entry.

This method may not be implemented (e.g. if this database is not backed by on-disk files), in which case the implementation may throw an UnsupportedOperationException.

Specified by:

getFileObject in interface IFileDatabase

Returns:

getFileWriter

public OutputStream getFileWriter(String key)
                           throws IOException

Description copied from interface: IFileDatabase

Get an output stream reader for low-level writing to a file. The client is responsible for closing the stream after usage.

This method may not be implemented, in which case the implementation may throw an UnsupportedOperationException.

Specified by:

getFileWriter in interface IFileDatabase

Returns:

Throws:

IOException

getFileReader

public InputStream getFileReader(String key)
                          throws IOException

Description copied from interface: IFileDatabase

Get an input stream reader for low-level reading from a file. The client is responsible for closing the stream after usage.

This method may not be implemented, in which case the implementation may throw an UnsupportedOperationException.

Specified by:

getFileReader in interface IFileDatabase

Returns:

Throws:

IOException

getDatabaseWriter

public IFileDatabaseWriter getDatabaseWriter(String key)
                                      throws IOException

Description copied from interface: IFileDatabase

Get a database record writer.

This method may not be implemented, in which case the implementation may throw an UnsupportedOperationException.

Specified by:

getDatabaseWriter in interface IFileDatabase

Returns:

Throws:

IOException

getDatabaseReader

public IFileDatabaseReader getDatabaseReader(String key)
                                      throws IOException

Description copied from interface: IFileDatabase

Get a database record reader.

This method may not be implemented, in which case the implementation may throw an UnsupportedOperationException.

Specified by:

getDatabaseReader in interface IFileDatabase

Returns:

Throws:

IOException