Class SetExam

java.lang.Object

org.deltava.dao.DAO

org.deltava.dao.SetExam

public class SetExam
extends DAO

A Data Access Object to write Pilot Examinations and Check Rides to the database.

Since:

1.0

Version:

11.0

Author:

Luke

Field Summary

Fields inherited from class DAO

_queryMax, _queryStart, _queryTimeout, WGS84_SRID

Modifier and Type	Field	Description
protected int	_queryMax	The maximum number of rows to return.
protected int	_queryStart	The row number at which to start returning results.
protected int	_queryTimeout	The query timeout, in seconds.
protected static final int	WGS84_SRID	The SRID used for geolocation queries.

Constructor Summary

Constructors

Constructor	Description
SetExam(Connection c)	Initialize the Data Access Object.

Method Summary

Modifier and Type	Method	Description
void	answer(int examID, Question q)	Saves a single answer to an examination.
void	delete(Test t)	Deletes a Pilot Examination or Check Ride from the database.
void	deleteCheckRides(int courseID)	Deletes unflown Check Rides from a Flight Academy Course.
void	linkCheckRide(CheckRide cr)	Links a CheckRide to a Flight Academy course.
void	update(Examination ex)	Updates an existing Pilot Examination in the database.
void	updateStats(Examination e)	Updates Examination correct answer statistics.
void	write(CheckRide cr)	Writes a Check Ride to the database.
void	write(Examination ex)	Writes a new Pilot Examination to the database.

Methods inherited from class DAO

commitTransaction, createTimestamp, executeIDs, executeUpdate, executeUpdate, expandDate, formatDBName, formatLocation, getNewID, getQueryCount, prepare, prepareWithoutLimits, rollbackTransaction, setQueryMax, setQueryStart, setQueryTimeout, startTransaction, toID, toID, toInstant

Modifier and Type	Method	Description
protected void	commitTransaction()	Commits a multi-step transaction to the database.
protected static Timestamp	createTimestamp(Instant i)	Null-safe conversion of an Instant to a Timestamp.
protected static List<Integer>	executeIDs(PreparedStatement ps)	Helper method to extract database ID data from the result set.
protected static int	executeUpdate(PreparedStatement ps, int minUpdateCount)	Executes an UPDATE transaction on a prepared statement, and throws a SQLExceptionif less than the expected number of rows were updated.
protected static int	executeUpdate(PreparedStatement ps, int minPerUpdate, int minTotal)	Executes an batched UPDATE transaction on a prepared statement, and throws a SQLExceptionif less than the expected number of rows were updated per batch entry.
protected static Instant	expandDate(Date dt)	Converts a date-only JDBC value into a full timestamp.
protected static String	formatDBName(String db)	Formats a database name by converting to lowercase.
protected static String	formatLocation(GeoLocation loc)	Converts a geographic location into a MySQL WKT formatted point.
protected int	getNewID()	Returns the AUTO_INC column value generated by the previous JDBC transaction.
static final long	getQueryCount()	Returns the total number of queries executed since the JVM was started.
protected PreparedStatement	prepare(String sql)	Initialize the prepared statement with an arbitrary SQL statement.
protected PreparedStatement	prepareWithoutLimits(String sql)	Initialize the prepared statement with an abitrary SQL statement, without applying the DAO's query result limitations.
protected void	rollbackTransaction()	Rolls back a multi-step transaction before it is completed.
final void	setQueryMax(int maxRows)	Sets the maximum number of rows in the returned result set.
final void	setQueryStart(int rowStart)	Sets the first row of the results to return.
void	setQueryTimeout(int timeout)	Sets the timeout for any SQL operations.
protected void	startTransaction()	Marks the start of a multi-step database transaction.
protected static Integer	toID(Object o)	Converts a Database bean or an Integer into an Integer.
protected static Collection<Integer>	toID(Collection<?> ids)	Converts a collection of Objects into Integer IDs.
protected static Instant	toInstant(Timestamp dt)	Null-safe conversion of a Timestamp to an Instant.

Methods inherited from class Object

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

Constructor Details

SetExam

public SetExam(Connection c)

Initialize the Data Access Object.

Parameters:

c - the JDBC connection to use

Method Details

write

public void write(Examination ex)
           throws DAOException

Writes a new Pilot Examination to the database. This will update the database ID for the Examination bean with the automatically generated ID column value.

Parameters:

ex - the Examination to write

Throws:

DAOException - if a JDBC error occurs

update

public void update(Examination ex)
            throws DAOException

Updates an existing Pilot Examination in the database.

Parameters:

ex - the Examination to update

Throws:

DAOException - if a JDBC error occurs

write

public void write(CheckRide cr)
           throws DAOException

Writes a Check Ride to the database. This can handle inserts and updates.

Parameters:

cr - the Check Ride object

Throws:

DAOException - if a JDBC error occurs

linkCheckRide

public void linkCheckRide(CheckRide cr)
                   throws DAOException

Links a CheckRide to a Flight Academy course.

Parameters:

cr - the CheckRide bean

Throws:

DAOException - if a JDBC error occurs

answer

public void answer(int examID,
 Question q)
            throws DAOException

Saves a single answer to an examination. This is used by a web service

Parameters:

examID - the Examination database ID

q - the Question bean

Throws:

DAOException - if a JDBC error occurs

updateStats

public void updateStats(Examination e)
                 throws DAOException

Updates Examination correct answer statistics.

Parameters:

e - the Examination bean

Throws:

DAOException - if a JDBC error occurs

deleteCheckRides

public void deleteCheckRides(int courseID)
                      throws DAOException

Deletes unflown Check Rides from a Flight Academy Course.

Parameters:

courseID - the database ID of the Course

Throws:

DAOException - if a JDBC error occurs

delete

public void delete(Test t)
            throws DAOException

Deletes a Pilot Examination or Check Ride from the database.

Parameters:

t - the Examination/Checkride

Throws:

DAOException - if a JDBC error occurs