ucar.unidata.data.imagery
Class ImageXmlDataSource

java.lang.Object
  ucar.unidata.collab.SharableImpl
      ucar.unidata.data.DataSourceImpl
          ucar.unidata.data.FilesDataSource
              ucar.unidata.data.imagery.ImageXmlDataSource

All Implemented Interfaces:

Sharable, DataSource, DataSourceFactory, XmlPersistable

public class ImageXmlDataSource
extends FilesDataSource

This is an implementation that will read in a generic data file and return a single Data choice that is a VisAD Data object.

Field Summary

static String	ATTR_BASE xml attr name
static String	ATTR_BYTES xml attr name
static String	ATTR_DATE xml attr name
static String	ATTR_FORMAT xml attr name
static String	ATTR_ID xml attr name
static String	ATTR_NAME xml attr name
static String	ATTR_URL xml attr name
static String	EXT_XIMG For ximg files
static PatternFileFilter	FILTER_XIMG For ximg files
static String	TAG_BYTES xml tag name
static String	TAG_COLLECTION xml tag name
static String	TAG_GROUP xml tag name
static String	TAG_IMAGE xml tag name
static String	TAG_SHAPE xml tag name

Fields inherited from class ucar.unidata.data.FilesDataSource

adapters, oldSourceFromBundles, sources

Fields inherited from class ucar.unidata.data.DataSourceImpl

changeDataPathsCbx, dataCacheKey, dataChoices, geoSelectionPanel, haveBeenUnPersisted, okToContinue, PARAM_SHOW_HIDE, PARAM_SHOW_NO, PARAM_SHOW_YES

Fields inherited from interface ucar.unidata.data.DataSource

MOST_RECENT, ordinalNames, PROP_AUTOCREATEDISPLAY, PROP_BASEDIRECTORY, PROP_CACHEABLE, PROP_DATACHOICENAME, PROP_DISPLAYPROPERTIES, PROP_DOCUMENTLINKS, PROP_FILEPATTERN, PROP_GEOLOCATION, PROP_ICON, PROP_NAME, PROP_POLLINFO, PROP_RESOLVERURL, PROP_SERVICE_HTTP, PROP_SUBPROPERTIES, PROP_TIMELABELS, PROP_TITLE

Constructor Summary

ImageXmlDataSource()
Parameterless ctor for xml encoding.

ImageXmlDataSource(DataSourceDescriptor descriptor, String filename, Hashtable properties)
Just pass through to the base class the ctor arguments.

Method Summary

boolean	canSaveDataToLocalDisk() Is this data source capable of saving its data to local disk
protected void	doMakeDataChoices() This method is called at initialization time and should create a set of DirectDataChoice-s and add them into the base class managed list of DataChoice-s with the method addDataChoice.
protected List	doMakeDateTimes() You can also override the base class method to return the list of all date/times that this DataSource holds.
List	getAllDateTimes(DataChoice dataChoice) Override the base class method to return the times for the data choice
protected Data	getDataInner(DataChoice dataChoice, DataCategory category, DataSelection dataSelection, Hashtable requestProperties) This method should create and return the visad.Data that is identified by the given DataChoice.
List	getDataPaths() tmp
protected void	recurseXml(Element root, CompositeDataChoice cdc) Process the xml
protected List	saveDataToLocalDisk(String prefix, Object loadId, boolean changeLinks) Save remote data to local disk.
void	setXmlFile(String value) Set the XmlFile property.
static void	writeToFile(String filename, GeoLocationInfo bounds, byte[] bytes, String format) A utility method that writes out the given image bytes and the ximg file
static void	writeToFile(String filename, GeoLocationInfo bounds, String imageFileName) A utility method that writes out the given image bytes and the ximg file

Methods inherited from class ucar.unidata.data.FilesDataSource

doRemove, equals, getDataFileExtension, getFilePath, getFullDescription, getInputStreams, getLocationsForPolling, getPartialDescription, getSource, getSources, haveSources, initAfterCreation, initAfterUnpersistence, initWithPollingInfo, isFileBased, newFilesFromPolling, processDataFilename, propertiesChanged, reloadData, setNewFiles, setSource, setSources, sourcesChanged, updateState

Methods inherited from class ucar.unidata.data.DataSourceImpl

addActions, addDataChangeListener, addDataChoice, addPropertiesTabs, applyFieldMask, applyProperties, beginWritingDataToLocalDisk, canCacheDataToDisk, canChangeData, canDoFieldMask, canDoGeoSelection, canDoGeoSelectionMap, canDoGeoSelectionStride, canPoll, canShowParameter, checkForInitAfterUnPersistence, clearCachedData, clearFileCache, clearTimes, convertToFilesIfDirectory, createAutoDisplay, createCacheKey, createElement, decrOutstandingGetDataCalls, doDirectory, doMakeGeoSelectionPanel, doMakeGeoSelectionPanel, doMakeGeoSelectionPanel, doMakeGeoSubsetPropertiesComponent, endWritingDataToLocalDisk, expandIfNeeded, findDataChoice, findDataChoices, flushCache, getAbsoluteDateTimes, getActions, getAlias, getAllDateTimes, getAllLevels, getAllLevels, getCache, getCacheClearDelay, getCacheDataToDisk, getCompositeDataChoices, getData, getData, getDataCachePath, getDataChangeListeners, getDataChoices, getDataContext, getDataInner, getDataIsEditable, getDataPrefix, getDataSelection, getDataSelectionComponents, getDataSource, getDateTimes, getDateTimeSelection, getDescription, getDescriptor, getErrorMessage, getExtraGeoSelectionComponent, getFileFilterForPolling, getid, getInError, getLocalDirectory, getLocationForPolling, getMostRecentFiles, getName, getNameForDataSource, getNeedToShowErrorToUser, getNextId, getOutstandingGetDataCalls, getPassword, getPathsThatCanBeRelative, getPollingInfo, getProperties, getPropertiesComponents, getPropertiesHeader, getProperty, getProperty, getProperty, getProperty, getProperty, getProperty, getProperty, getRelativePaths, getSampleDataProjection, getSaveDataFileLabel, getSelectedDateTimes, getSelectedDateTimes, getTimesFromDataSelection, getTmpPaths, getTypeName, getUserName, handlePropertiesAction, hasPollingInfo, holdsDateTimes, holdsIndices, identifiedBy, identifiedByName, incrOutstandingGetDataCalls, initAfter, initDataChoice, initDataSelectionComponents, initFromXml, isPolling, loadFieldMask, loadFieldMask, loadLatestFile, logException, logException, makeDerivedDataChoices, makeSaveLocalActions, newFileFromPolling, notifyDataChange, putCache, removeCache, removeDataChangeListener, removeDataChoice, removeProperty, replaceDataChoice, resetTmpState, saveDataToLocalDisk, saveDataToLocalDisk, setAlias, setAskToUpdate, setCacheClearDelay, setCacheDataToDisk, setDataEditableStrings, setDataIsEditable, setDataIsRelative, setDataRelativeStrings, setDataSelection, setDateTimeSelection, setDescription, setDescriptor, setDirectory, setInError, setInError, setInError, setName, setObjectProperties, setObjectProperty, setPassword, setPollingInfo, setPollLocation, setProperties, setProperty, setProperty, setRelativePaths, setTemplateName, setTmpPaths, setUserName, shouldCache, showPasswordDialog, showPropertiesDialog, showPropertiesDialog, showPropertiesDialog, showWaitDialog, tick, toString, toStringTruncated, updateDetailsText, writeFieldMaskFile, writeFieldMaskFile

Methods inherited from class ucar.unidata.collab.SharableImpl

applySharableProperties, doShare, doShare, doShareExternal, doShareInternal, getSharablePropertiesComponent, getShareGroup, getSharing, getUniqueId, initSharable, receiveShareData, removeSharable, setShareGroup, setSharing, setUniqueId, showSharableDialog

Methods inherited from class java.lang.Object

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

Methods inherited from interface ucar.unidata.data.DataSource

getUniqueId

Field Detail

FILTER_XIMG

public static final PatternFileFilter FILTER_XIMG

For ximg files

EXT_XIMG

public static final String EXT_XIMG

For ximg files

See Also:

Constant Field Values

TAG_COLLECTION

public static final String TAG_COLLECTION

xml tag name

See Also:

Constant Field Values

TAG_GROUP

public static final String TAG_GROUP

xml tag name

See Also:

Constant Field Values

TAG_IMAGE

public static final String TAG_IMAGE

xml tag name

See Also:

Constant Field Values

TAG_BYTES

public static final String TAG_BYTES

xml tag name

See Also:

Constant Field Values

TAG_SHAPE

public static final String TAG_SHAPE

xml tag name

See Also:

Constant Field Values

ATTR_BASE

public static final String ATTR_BASE

xml attr name

See Also:

Constant Field Values

ATTR_ID

public static final String ATTR_ID

xml attr name

See Also:

Constant Field Values

ATTR_FORMAT

public static final String ATTR_FORMAT

xml attr name

See Also:

Constant Field Values

ATTR_BYTES

public static final String ATTR_BYTES

xml attr name

See Also:

Constant Field Values

ATTR_DATE

public static final String ATTR_DATE

xml attr name

See Also:

Constant Field Values

ATTR_URL

public static final String ATTR_URL

xml attr name

See Also:

Constant Field Values

ATTR_NAME

public static final String ATTR_NAME

xml attr name

See Also:

Constant Field Values

Constructor Detail

ImageXmlDataSource

public ImageXmlDataSource()

Parameterless ctor for xml encoding.

ImageXmlDataSource

public ImageXmlDataSource(DataSourceDescriptor descriptor,
                          String filename,
                          Hashtable properties)
                   throws VisADException

Just pass through to the base class the ctor arguments.

Parameters:

descriptor - Describes this data source, has a label etc.

filename - This is the filename (or url) that points to the actual data source.

properties - General properties used in the base class idv * @throws VisADException problem getting the data

Throws:

VisADException

Method Detail

getDataPaths

public List getDataPaths()

tmp

Specified by:

getDataPaths in interface DataSource

Overrides:

getDataPaths in class FilesDataSource

Returns:

tmp

canSaveDataToLocalDisk

public boolean canSaveDataToLocalDisk()

Is this data source capable of saving its data to local disk

Specified by:

canSaveDataToLocalDisk in interface DataSource

Overrides:

canSaveDataToLocalDisk in class DataSourceImpl

Returns:

Can save to local disk

saveDataToLocalDisk

protected List saveDataToLocalDisk(String prefix,
                                   Object loadId,
                                   boolean changeLinks)
                            throws Exception

Save remote data to local disk. This is a NOOP.

Overrides:

saveDataToLocalDisk in class FilesDataSource

Parameters:

prefix - file dir and prefix

loadId - For JobManager

changeLinks - Change internal references

Returns:

List of files

Throws:

Exception - On badness

getAllDateTimes

public List getAllDateTimes(DataChoice dataChoice)

Override the base class method to return the times for the data choice

Specified by:

getAllDateTimes in interface DataSource

Overrides:

getAllDateTimes in class DataSourceImpl

Parameters:

dataChoice - DataChoice in question

Returns:

List of all times for that choice

doMakeDataChoices

protected void doMakeDataChoices()

This method is called at initialization time and should create a set of DirectDataChoice-s and add them into the base class managed list of DataChoice-s with the method addDataChoice.

Overrides:

doMakeDataChoices in class DataSourceImpl

recurseXml

protected void recurseXml(Element root,
                          CompositeDataChoice cdc)
                   throws Exception

Process the xml

Parameters:

root - xml node

cdc - The parent data choice

Throws:

Exception - On badness

getDataInner

protected Data getDataInner(DataChoice dataChoice,
                            DataCategory category,
                            DataSelection dataSelection,
                            Hashtable requestProperties)
                     throws VisADException,
                            RemoteException

This method should create and return the visad.Data that is identified by the given DataChoice.

Overrides:

getDataInner in class DataSourceImpl

Parameters:

dataChoice - This is one of the DataChoice-s that was created in the doMakeDataChoices call above.

category - The specific DataCategory which the DisplayControl was instantiated with. Usually can be ignored.

dataSelection - This may contain a list of times which subsets the request.

requestProperties - extra request properties

Returns:

The Data object represented by the given dataChoice

Throws:

RemoteException - Java RMI problem

VisADException - VisAD problem

doMakeDateTimes

protected List doMakeDateTimes()

You can also override the base class method to return the list of all date/times that this DataSource holds.

Overrides:

doMakeDateTimes in class DataSourceImpl

Returns:

This should be an List of DateTime objects.

setXmlFile

public void setXmlFile(String value)

Set the XmlFile property.

Parameters:

value - The new value for XmlFile

writeToFile

public static void writeToFile(String filename,
                               GeoLocationInfo bounds,
                               byte[] bytes,
                               String format)
                        throws FileNotFoundException,
                               IOException

A utility method that writes out the given image bytes and the ximg file

Parameters:

filename - Filename to write to. Will use this to write the image.

bounds - The lat/lon bounds

bytes - The image bytes

format - Image format

Throws:

FileNotFoundException - On badness

IOException - On badness

writeToFile

public static void writeToFile(String filename,
                               GeoLocationInfo bounds,
                               String imageFileName)
                        throws FileNotFoundException,
                               IOException

A utility method that writes out the given image bytes and the ximg file

Parameters:

filename - Filename to write to. Will use this to write the image.

bounds - The lat/lon bounds

imageFileName - The image file this represents

Throws:

FileNotFoundException - On badness

IOException - On badness