Class GetImage

java.lang.Object

org.deltava.dao.DAO

org.deltava.dao.GetImage

public class GetImage
extends DAO

A Data Access Object to retrieve image data from the database.

Since:

1.0

Version:

10.5

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
GetImage(Connection c)	Initializes the DAO from a JDBC connection.

Method Summary

Modifier and Type	Method	Description
byte[]	getChart(int id)	Returns a Chart.
byte[]	getEventBanner(int id)	Returns an Online Event banner image.
byte[]	getExamResource(int id)	Returns a Testing Center resource image.
byte[]	getGalleryImage(int id, String dbName)	Returns a Picture Gallery image.
byte[]	getNews(int id)	Returns a System News banner image.
byte[]	getNOTAM(int id)	Returns a NOTAM banner image.
byte[]	getPartnerBanner(int id)	Returns a Partner banner image.
Instant	getSigModified(int id, String dbName)	Returns the last modification date of a Pilot signature.
byte[]	getSignatureImage(int id, String dbName)	Returns a signature image for a Pilot.
byte[]	getTile(TileAddress addr)	Returns an ACARS track tile.
boolean	isSignatureAuthorized(int id)	Returns if a Water Cooler signature image is officially approved.

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

GetImage

public GetImage(Connection c)

Initializes the DAO from a JDBC connection.

Parameters:

c - the JDBC connection

Method Details

getSignatureImage

public byte[] getSignatureImage(int id,
 String dbName)
                         throws DAOException

Returns a signature image for a Pilot.

Parameters:

id - the pilot ID

dbName - the database containing the signature

Returns:

the signature image data

Throws:

DAOException - if a JDBC error occurs

getSigModified

public Instant getSigModified(int id,
 String dbName)
                       throws DAOException

Returns the last modification date of a Pilot signature.

Parameters:

id - the Pilot's database ID

dbName - the database containing the signature

Returns:

the signature last modified date/time, or null if not found

Throws:

DAOException - if a JDBC error occurs

getEventBanner

public byte[] getEventBanner(int id)
                      throws DAOException

Returns an Online Event banner image.

Parameters:

id - the Event database ID

Returns:

the banner image data

Throws:

DAOException - if a JDBC error occurs

getPartnerBanner

public byte[] getPartnerBanner(int id)
                        throws DAOException

Returns a Partner banner image.

Parameters:

id - the Partner database ID

Returns:

the banner image data

Throws:

DAOException - if a JDBC error occurs

getChart

public byte[] getChart(int id)
                throws DAOException

Returns a Chart.

Parameters:

id - the chart ID

Returns:

the chart image data

Throws:

DAOException - if a JDBC error occurs

getNews

public byte[] getNews(int id)
               throws DAOException

Returns a System News banner image.

Parameters:

id - the News entry id

Returns:

the banner image data

Throws:

DAOException - if a JDBC error occurs

getNOTAM

public byte[] getNOTAM(int id)
                throws DAOException

Returns a NOTAM banner image.

Parameters:

id - the NOTAM id

Returns:

the banner image data

Throws:

DAOException - if a JDBC error occurs

getGalleryImage

public byte[] getGalleryImage(int id,
 String dbName)
                       throws DAOException

Returns a Picture Gallery image.

Parameters:

id - the gallery image ID

dbName - the database name

Returns:

the gallery image data

Throws:

DAOException - if a JDBC error occurs

getExamResource

public byte[] getExamResource(int id)
                       throws DAOException

Returns a Testing Center resource image.

Parameters:

id - the question ID

Returns:

the question image data

Throws:

DAOException - if a JDBC error occurs

getTile

public byte[] getTile(TileAddress addr)
               throws DAOException

Returns an ACARS track tile.

Parameters:

addr - the TileAddress

Returns:

the PNG tile data, or null if not found

Throws:

DAOException - if a JDBC error occurs

isSignatureAuthorized

public boolean isSignatureAuthorized(int id)
                              throws DAOException

Returns if a Water Cooler signature image is officially approved.

Parameters:

id - the Pilot's database ID

Returns:

TRUE if approved, otherwise FALSE

Throws:

DAOException - if a JDBC error occurs