Package edu.gsu.cs.dmlab.databases

Class HelioviewerPullingAIAImageDBConnection

java.lang.Object

edu.gsu.cs.dmlab.databases.NonCacheImageDBConnection

edu.gsu.cs.dmlab.databases.ImageDBConnection

edu.gsu.cs.dmlab.databases.HelioviewerPullingAIAImageDBConnection

All Implemented Interfaces:

ISTImageDBConnection

public class HelioviewerPullingAIAImageDBConnection
extends ImageDBConnection

This class extends the ImageDBConnection to pull images that are not in the database already, from the Helioviewer API. It then converts the downloaded image from the JP2 format that is provided by the Helioviewer API to a JPEG format that is stored in the database that this class is connected to.

Author:

Dustin Kempton, Data Mining Lab, Georgia State University

Field Summary

Fields

Modifier and Type	Field	Description
static String	certificateString

Constructor Summary

Constructors

Constructor	Description
HelioviewerPullingAIAImageDBConnection(DataSource dsourc, IImageDBCreator creator, IImgParamNormalizer normalizer, org.slf4j.Logger logger, int maxCacheSize)	Constructor that assumes default values for parameter down sample and the number of parameters for each image cell.

Method Summary

Modifier and Type	Method	Description
void	finalize()
BufferedImage	getFirstFullImage(org.joda.time.Interval period, Waveband wavelength)	Gets the first full resolution image in the database that happens after the start time of the input interval, at a given wavelength.
BufferedImage	getFullImgForId(org.joda.time.Interval period, int id)	Gets the full resolution image in the month that the period begins that has the passed in id value.
boolean	readFileTypeBox(byte[] byteBuffer, int pos)	This method reads the File Type box.
int	readInt(byte[] byteBuffer, int pos)	Reads a signed int (i.e., 32 bit) from the input.

Methods inherited from class edu.gsu.cs.dmlab.databases.ImageDBConnection

getImageParamForWave

Methods inherited from class edu.gsu.cs.dmlab.databases.NonCacheImageDBConnection

getFirstImage, getFirstImageSparseVectForId, getHeaderForId, getImageIdsForInterval, getImageParamForEv, getImageParamForId, getImageSparseVectForId, getImgForId

Methods inherited from class java.lang.Object

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

Field Detail

certificateString

public static String certificateString

Constructor Detail

HelioviewerPullingAIAImageDBConnection

public HelioviewerPullingAIAImageDBConnection(DataSource dsourc,
                                              IImageDBCreator creator,
                                              IImgParamNormalizer normalizer,
                                              org.slf4j.Logger logger,
                                              int maxCacheSize)

Constructor that assumes default values for parameter down sample and the number of parameters for each image cell. Those values are a division by 64 for all coordinates of input events, and 10 image parameters per cell location.

Parameters:

dsourc - The data source connection that is used to connect to the database.

creator - The image DB creator object used to insert images and metadata into the tables used to store this information.

normalizer - The image parameter normalizer, can be null, and if it is, then no normalization is performed on the parameters before return. Else, parameters are normalized prior to return using this object.

logger - Logger used to report errors that occurred while processing data requests.

maxCacheSize - The number of input event and wavelength pairs to cache the image parameter cube for before replacing with LRU ordering.

Method Detail

finalize

public void finalize()
              throws Throwable

Overrides:

finalize in class ImageDBConnection

Throws:

Throwable

getFirstFullImage

public BufferedImage getFirstFullImage(org.joda.time.Interval period,
                                       Waveband wavelength)
                                throws SQLException,
                                       IOException

Description copied from interface: ISTImageDBConnection

Gets the first full resolution image in the database that happens after the start time of the input interval, at a given wavelength.

Specified by:

getFirstFullImage in interface ISTImageDBConnection

Overrides:

getFirstFullImage in class NonCacheImageDBConnection

Parameters:

period - The period to start the search from.

wavelength - The wavelength of Image we wish to get.

Returns:

The first image starting after the period begin time.

Throws:

SQLException - If something went wrong with the server.

IOException - If something went wrong with the decoding of the image.

getFullImgForId

public BufferedImage getFullImgForId(org.joda.time.Interval period,
                                     int id)
                              throws SQLException,
                                     IOException

Description copied from interface: ISTImageDBConnection

Gets the full resolution image in the month that the period begins that has the passed in id value.

Specified by:

getFullImgForId in interface ISTImageDBConnection

Overrides:

getFullImgForId in class NonCacheImageDBConnection

Parameters:

period - The month in which to get the image.

id - The id associated with the image we wish to get.

Returns:

The buffered image with the given id from the given month.

Throws:

SQLException - If something went wrong with the server.

IOException - If something went wrong with decoding of the image

readInt

public final int readInt(byte[] byteBuffer,
                         int pos)

Reads a signed int (i.e., 32 bit) from the input. Prior to reading, the input should be realigned at the byte level.

Returns:

The next byte-aligned signed int (32 bit) from the input.

readFileTypeBox

public boolean readFileTypeBox(byte[] byteBuffer,
                               int pos)

This method reads the File Type box.

Returns:

false if the File Type box was not found or invalid else true

Throws:

IOException - If an I/O error occurred.

EOFException - If the end of file was reached