Package ghidra.framework.store.db

Class VersionedDatabase

java.lang.Object

db.Database

ghidra.framework.store.db.VersionedDatabase

public class VersionedDatabase
extends Database

VersionedDatabase corresponds to a versioned database.

Nested Class Summary

Nested classes/interfaces inherited from class db.Database

Database.DBBufferFileManager

Field Summary

Fields

Modifier and Type	Field	Description
static final long	DEFAULT_CHECKOUT_ID
final int	LATEST_VERSION
protected VersionedDBListener	verDBListener	Change listener

Fields inherited from class db.Database

bfMgr, CHANGE_FILE_PREFIX, CUMULATIVE_CHANGE_FILENAME, CUMULATIVE_MODMAP_FILENAME, currentVersion, DATABASE_FILE_PREFIX, dbDir, dbDirCreated, dbFileListener, isCheckOutCopy, isVersioned, lastModified, minVersion, syncObject, updateAllowed, VERSION_FILE_PREFIX

Constructor Summary

Constructors

Constructor	Description
VersionedDatabase(File dbDir, BufferFile srcFile, VersionedDBListener verDBListener, long checkoutId, String comment, TaskMonitor monitor)	Construct a new "Versioned" Database from an existing srcFile.
VersionedDatabase(File dbDir, VersionedDBListener verDBListener)	Constructor for an existing "Versioned" Database.
VersionedDatabase(File dbDir, File packedFile, VersionedDBListener verDBListener, long checkoutId, String comment, TaskMonitor monitor)	Construct a new "Versioned" Database from a packed database file

Method Summary

Modifier and Type	Method	Description
static LocalManagedBufferFile	createVersionedDatabase(File dbDir, int bufferSize, VersionedDBListener verDBListener, long checkoutId)	Create a new database and provide the initial buffer file for writing.
void	dbMoved(File dbDir)	Following a move of the database directory, this method should be invoked if this instance will continue to be used.
void	deleteCurrentVersion()	Delete latest version.
void	deleteMinimumVersion()	Delete oldest version.
int	getCurrentVersion()	Returns the version number associated with the latest buffer file version.
int	getMinimumVersion()	Returns the version number associated with the oldest buffer file version.
DBHandle	open(int version, int minChangeDataVer, TaskMonitor monitor)	Open a specific version of the stored database for non-update use.
LocalManagedBufferFile	openBufferFile(int version, int minChangeDataVer)	Open a specific version of this database for non-update use.
LocalManagedBufferFile	openBufferFileForUpdate(long checkoutId)	Open the current version of this database for update use.
DBHandle	openForUpdate(TaskMonitor monitor)	Open the stored database for update use.
void	output(int version, File outputFile, String name, int filetype, String contentType, TaskMonitor monitor)	Output the current version of this database to a packed storage file.
protected void	scanFiles(boolean repair)	Scan files and update state.

Methods inherited from class db.Database

deleteDir, lastModified, length, open, refresh, setSynchronizationObject

Methods inherited from class java.lang.Object

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

Field Details

LATEST_VERSION

public final int LATEST_VERSION

See Also:

• Constant Field Values

DEFAULT_CHECKOUT_ID

public static final long DEFAULT_CHECKOUT_ID

See Also:

• Constant Field Values

verDBListener

protected VersionedDBListener verDBListener

Change listener

Constructor Details

VersionedDatabase

public VersionedDatabase(File dbDir,
 VersionedDBListener verDBListener)
                  throws IOException

Constructor for an existing "Versioned" Database.

Parameters:

dbDir - database directory

verDBListener -

Throws:

IOException

VersionedDatabase

public VersionedDatabase(File dbDir,
 BufferFile srcFile,
 VersionedDBListener verDBListener,
 long checkoutId,
 String comment,
 TaskMonitor monitor)
                  throws IOException,
CancelledException

Construct a new "Versioned" Database from an existing srcFile.

Parameters:

dbDir -

srcFile -

monitor -

Throws:

IOException

CancelledException

VersionedDatabase

public VersionedDatabase(File dbDir,
 File packedFile,
 VersionedDBListener verDBListener,
 long checkoutId,
 String comment,
 TaskMonitor monitor)
                  throws IOException,
CancelledException

Construct a new "Versioned" Database from a packed database file

Parameters:

dbDir -

packedFile -

verDBListener -

checkoutId -

comment -

monitor -

Throws:

IOException

CancelledException

Method Details

createVersionedDatabase

public static LocalManagedBufferFile createVersionedDatabase(File dbDir,
 int bufferSize,
 VersionedDBListener verDBListener,
 long checkoutId)
                                                      throws IOException

Create a new database and provide the initial buffer file for writing.

Parameters:

dbDir -

bufferSize -

Returns:

initial buffer file

Throws:

IOException

getMinimumVersion

public int getMinimumVersion()

Returns the version number associated with the oldest buffer file version.

getCurrentVersion

public int getCurrentVersion()

Returns the version number associated with the latest buffer file version.

Overrides:

getCurrentVersion in class Database

deleteMinimumVersion

public void deleteMinimumVersion()
                          throws IOException

Delete oldest version.

Throws:

IOException - if an error occurs or this is the only version.

deleteCurrentVersion

public void deleteCurrentVersion()
                          throws IOException

Delete latest version.

Throws:

IOException - if an error occurs or this is the only version.

openBufferFile

public LocalManagedBufferFile openBufferFile(int version,
 int minChangeDataVer)
                                      throws IOException

Open a specific version of this database for non-update use.

Parameters:

version - database version or LATEST_VERSION for current version

minChangeDataVer - the minimum database version whose change data should be associated with the returned buffer file. A value of -1 indicates that change data is not required.

Returns:

buffer file for non-update use.

Throws:

IOException

open

public DBHandle open(int version,
 int minChangeDataVer,
 TaskMonitor monitor)
              throws IOException

Open a specific version of the stored database for non-update use. The returned handle does not support the Save operation.

Parameters:

version - database version

monitor - task monitor (may be null)

Returns:

database handle

Throws:

FileInUseException - thrown if unable to obtain the required database lock(s).

IOException - thrown if IO error occurs.

openForUpdate

public DBHandle openForUpdate(TaskMonitor monitor)
                       throws IOException

Description copied from class: Database

Open the stored database for update use.

Overrides:

openForUpdate in class Database

Parameters:

monitor - task monitor (may be null)

Returns:

buffer file

Throws:

IOException - thrown if IO error occurs.

openBufferFileForUpdate

public LocalManagedBufferFile openBufferFileForUpdate(long checkoutId)
                                               throws IOException

Open the current version of this database for update use.

Parameters:

checkoutId - checkout ID

Returns:

updateable buffer file

Throws:

IOException - if update not permitted or other error occurs

dbMoved

public void dbMoved(File dbDir)
             throws FileNotFoundException

Following a move of the database directory, this method should be invoked if this instance will continue to be used.

Parameters:

dbDir - new database directory

Throws:

FileNotFoundException

scanFiles

protected void scanFiles(boolean repair)
                  throws FileNotFoundException

Scan files and update state.

Overrides:

scanFiles in class Database

Parameters:

repair - if true files are repaired if needed.

Throws:

FileNotFoundException

output

public void output(int version,
 File outputFile,
 String name,
 int filetype,
 String contentType,
 TaskMonitor monitor)
            throws IOException,
CancelledException

Output the current version of this database to a packed storage file.

Parameters:

outputFile - packed storage file to be written

name - database name

filetype - application file type

contentType - user content type

monitor -

Throws:

IOException

CancelledException