Package adams.db

Class AbstractTable

java.lang.Object

adams.core.logging.LoggingObject

adams.db.generic.SQL

adams.db.AbstractTable

All Implemented Interfaces:

LoggingSupporter, SizeOfHandler, DatabaseConnectionProvider, DatabaseConnectionUser, SQLIntf, TableInterface, DatabaseConnectionChangeListener, Serializable

Direct Known Subclasses:

AbstractIndexedTable

public abstract class AbstractTable
extends SQL
implements TableInterface, DatabaseConnectionChangeListener

Ancestor for all table classes.

Author:

fracpete (fracpete at waikato dot ac dot nz)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static String	FILENAME	the name of the props file.
protected static Properties	m_Properties	the properties file.
protected String	m_TableName	name of the table.

Fields inherited from class adams.db.generic.SQL

m_DatabaseConnection, m_Debug, m_TableManager

Fields inherited from class adams.core.logging.LoggingObject

m_Logger, m_LoggingIsEnabled, m_LoggingLevel

Fields inherited from interface adams.db.SQLIntf

FAKE_TABLE_NAME

Constructor Summary

Constructors

Constructor	Description
AbstractTable(AbstractDatabaseConnection dbcon, String tableName)	Initializes the table.

Method Summary

Modifier and Type	Method	Description
boolean	columnExists(String column)	Checks that a given column exists.
void	databaseConnectionStateChanged(DatabaseConnectionChangeEvent e)	A change in the database connection occurred.
protected static Properties	getProperties()	Returns the properties.
String	getTableName()	Get name of table.
static String[]	getTables()	Returns a list with classnames of tables.
abstract boolean	init()	Initialize table, e.g., creating.
static boolean	isEnabled(Class cls)	Returns whether the specified table is enabled and should get created if non-existent.
boolean	tableExists()	Checks that a given table exists.
String	toString()	Returns a short string representation.

Methods inherited from class adams.db.generic.SQL

columnExists, doSelect, drop, execute, executeGeneratedKeys, getDatabaseConnection, getDebug, getMaxColumnNameLength, getResultSet, getSimpleResultSet, prepareStatement, prepareStatement, prepareStatement, select, selectDistinct, selectDouble, selectInt, selectLong, selectString, selectStrings, setDebug, singleton, tableExists, truncate, update, updatePrefix

Methods inherited from class adams.core.logging.LoggingObject

configureLogger, getLogger, getLoggingLevel, initializeLogging, isLoggingEnabled, sizeOf

Methods inherited from class java.lang.Object

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

Methods inherited from interface adams.core.logging.LoggingSupporter

getLogger, isLoggingEnabled

Field Detail

FILENAME

public static final String FILENAME

the name of the props file.

See Also:

Constant Field Values

m_Properties

protected static Properties m_Properties

the properties file.

m_TableName

protected String m_TableName

name of the table.

Constructor Detail

AbstractTable

public AbstractTable(AbstractDatabaseConnection dbcon,
                     String tableName)

Initializes the table.

Parameters:

dbcon - the database context this table is used in

tableName - the name of the table

Method Detail

isEnabled

public static boolean isEnabled(Class cls)

Returns whether the specified table is enabled and should get created if non-existent.

Parameters:

cls - the table class to check

Returns:

true if table is to be available

getTableName

public String getTableName()

Get name of table.

Specified by:

getTableName in interface TableInterface

Overrides:

getTableName in class SQL

Returns:

table name

tableExists

public boolean tableExists()

Checks that a given table exists.

Returns:

true if the table exists.

columnExists

public boolean columnExists(String column)

Checks that a given column exists.

Parameters:

column - the column to look for

Returns:

true if the column exists.

init

public abstract boolean init()

Initialize table, e.g., creating.

Returns:

successful initialization

databaseConnectionStateChanged

public void databaseConnectionStateChanged(DatabaseConnectionChangeEvent e)

A change in the database connection occurred. Derived classes can override this method to react to changes in the connection.

Specified by:

databaseConnectionStateChanged in interface DatabaseConnectionChangeListener

Parameters:

e - the event

toString

public String toString()

Returns a short string representation.

Overrides:

toString in class SQL

Returns:

the string representation

getTables

public static String[] getTables()

Returns a list with classnames of tables.

Returns:

the table classnames

getProperties

protected static Properties getProperties()

Returns the properties. Loads them if necessary.

Returns:

the properties