org.vanilladb.core.server

Class VanillaDb

java.lang.Object

org.vanilladb.core.server.VanillaDb

public class VanillaDb
extends Object

The class that provides system-wide static global values. These values must be initialized by the method init before use. The methods initFileMgr, initFileAndLogMgr, initTaskMgr, initTxMgr, initCatalogMgr, initStatMgr, and initCheckpointingTask provide limited initialization, and are useful for debugging purposes.

Constructor Summary

Constructors

Constructor and Description
VanillaDb()

Method Summary

Modifier and Type	Method and Description
static CatalogMgr	catalogMgr()
static FileMgr	fileMgr()
static void	init(String dirName) Initializes the system.
static void	init(String dirName, StoredProcedureFactory factory) Initializes the system.
static void	initAndStartProfiler() Initialize profiler and start collecting profiling data.
static void	initCatalogMgr(boolean isNew, Transaction tx) Initializes the catalog manager.
static void	initCheckpointingTask() Initialize a background checkpointing task.
static void	initFileAndLogMgr(String dirName) Initializes the file and log managers.
static void	initFileMgr(String dirName) Initializes only the file manager.
static void	initStatMgr(Transaction tx) Initializes the statistics manager.
static void	initTaskMgr() Initializes the task manager.
static void	initTxMgr() Initializes the transaction manager.
static boolean	isInited() Is VanillaDB initialized ?
static LogMgr	logMgr()
static Planner	newPlanner() Creates a planner for SQL commands.
static StoredProcedureFactory	spFactory()
static StatMgr	statMgr()
static void	stopProfilerAndReport() Stop profiler and generate report file.
static TaskMgr	taskMgr()
static TransactionMgr	txMgr()

Methods inherited from class java.lang.Object

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

Constructor Detail

VanillaDb

public VanillaDb()

Method Detail

init

public static void init(String dirName)

Initializes the system. This method is called during system startup.

Parameters:

dirName - the name of the database directory

init

public static void init(String dirName,
                        StoredProcedureFactory factory)

Initializes the system. This method is called during system startup.

Parameters:

dirName - the name of the database directory

factory - the stored procedure factory for generating stored procedures

isInited

public static boolean isInited()

Is VanillaDB initialized ?

Returns:

true if it is initialized, otherwise false.

initFileMgr

public static void initFileMgr(String dirName)

Initializes only the file manager.

Parameters:

dirName - the name of the database directory

initFileAndLogMgr

public static void initFileAndLogMgr(String dirName)

Initializes the file and log managers.

Parameters:

dirName - the name of the database directory

initTaskMgr

public static void initTaskMgr()

Initializes the task manager.

initTxMgr

public static void initTxMgr()

Initializes the transaction manager.

initCatalogMgr

public static void initCatalogMgr(boolean isNew,
                                  Transaction tx)

Initializes the catalog manager. Note that the catalog manager should be initialized before system recovery.

Parameters:

isNew - an indication of whether a new database needs to be created.

tx - the transaction performing the initialization

initStatMgr

public static void initStatMgr(Transaction tx)

Initializes the statistics manager. Note that this manager should be initialized after system recovery.

Parameters:

tx - the transaction performing the initialization

initCheckpointingTask

public static void initCheckpointingTask()

Initialize a background checkpointing task.

fileMgr

public static FileMgr fileMgr()

logMgr

public static LogMgr logMgr()

catalogMgr

public static CatalogMgr catalogMgr()

statMgr

public static StatMgr statMgr()

taskMgr

public static TaskMgr taskMgr()

txMgr

public static TransactionMgr txMgr()

spFactory

public static StoredProcedureFactory spFactory()

newPlanner

public static Planner newPlanner()

Creates a planner for SQL commands. To change how the planner works, modify this method.

Returns:

the system's planner for SQL commands

initAndStartProfiler

public static void initAndStartProfiler()

Initialize profiler and start collecting profiling data.

stopProfilerAndReport

public static void stopProfilerAndReport()

Stop profiler and generate report file.