semorg.sql.tables
Class Instructor

java.lang.Object
  semorg.sql.tables.AbstractTable
      semorg.sql.tables.Instructor

public class Instructor
extends AbstractTable

Models the association "Instructor" between the classes Lecturer and Presentation: a Lecturer is an Instructor of a Presentation (association has a * cardinality).

Field Summary

private static String	createTableSQLString SQL statement for creating the table "instructor" (if not exists).
protected int	lecturerId The id of the lecturer.
static List<KeyPair>	lockedIds A list of id-pairs of locked records.
protected int	presentationId The id of the presentation.
protected static String	supervisorDeleteString SQL query to delete a instructor record.
protected static String	supervisorInsertString SQL query to insert a instructor record.
private static String	tableName The name of the corresponding table in the database.

Fields inherited from class semorg.sql.tables.AbstractTable

creationDate, modificationDate, NULL_ID

Constructor Summary

Instructor(int lecturerId, int presentationId, Timestamp creationDate, Timestamp modificationDate)
Creates an instance of the class Instructor with the given parameters.

Method Summary

static void	createInstructorTable(Statement statement) Creates the table "instructor" if it does not exist.
void	deleteFromDB() Delets a instructor record from the db using the supervisorDeleteString.
static Vector<DBColumn>	getColumns() Returns a vector of DBColumn instances according to the properties of the table "instructor".
int	getLecturerId()
int	getPresentationId()
void	insertIntoDB() Inserts a instructor record into the db using the supervisorInsertString.
static boolean	tableOK() Checks if the according DB table exists.

Methods inherited from class semorg.sql.tables.AbstractTable

addDBTableChangedListener, createExtendedQueryString, fireTableChangedEvent, getColumns, getCreationDate, getModificationDate, getNext, getPrevious, removeDBTableChangedListener, setModificationDate, tableOK

Methods inherited from class java.lang.Object

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

Field Detail

lockedIds

public static List<KeyPair> lockedIds

A list of id-pairs of locked records. This list is meant to prevent the manipulation / deletion of records whose association is currently edited.

lecturerId

protected int lecturerId

The id of the lecturer.

presentationId

protected int presentationId

The id of the presentation.

tableName

private static String tableName

The name of the corresponding table in the database.

supervisorInsertString

protected static String supervisorInsertString

SQL query to insert a instructor record.

supervisorDeleteString

protected static String supervisorDeleteString

SQL query to delete a instructor record.

createTableSQLString

private static String createTableSQLString

SQL statement for creating the table "instructor" (if not exists).

Constructor Detail

Instructor

public Instructor(int lecturerId,
                  int presentationId,
                  Timestamp creationDate,
                  Timestamp modificationDate)

Creates an instance of the class Instructor with the given parameters.

Method Detail

tableOK

public static boolean tableOK()

Checks if the according DB table exists.

Returns:

true, if the table is ok, false otherwise.

See Also:

AbstractTable.tableOK(String)

createInstructorTable

public static void createInstructorTable(Statement statement)
                                  throws SQLException

Creates the table "instructor" if it does not exist.

Parameters:

statement - instance of the class Statement, which is used for executing the SQL statement createTableSQLString.

Throws:

SQLException - If the execution or closing of the given statement fails.

insertIntoDB

public void insertIntoDB()
                  throws SQLException

Inserts a instructor record into the db using the supervisorInsertString. Finally it fires a TableChangedEvent-Listener with the appropriate type.

Throws:

SQLException - If the creation, manipulation, execution or closing of a PreparedStatement instance used for querying the database fails.

See Also:

- overview of all listener types

deleteFromDB

public void deleteFromDB()
                  throws SQLException

Delets a instructor record from the db using the supervisorDeleteString. Finally it fires a TableChangedEvent-Listener with the appropriate type.

Throws:

SQLException - If the creation, manipulation, execution or closing of a PreparedStatement instance used for querying the database fails.

See Also:

- overview of all listener types

getColumns

public static Vector<DBColumn> getColumns()

Returns a vector of DBColumn instances according to the properties of the table "instructor".

Returns:

the vector of DBColumn instances according to the properties of the class Instructor.

See Also:

AbstractTable.getColumns(String tableAbbreviation)

getLecturerId

public int getLecturerId()

getPresentationId

public int getPresentationId()