org.geotools.geopkg.mosaic

Class GeoPackageReader

Object

AbstractGridCoverage2DReader

GeoPackageReader

All Implemented Interfaces:

GridCoverage2DReader, GridCoverageReader

public class GeoPackageReader
extends AbstractGridCoverage2DReader

GeoPackage Grid Reader (supports the GP mosaic datastore).

Author:

Justin Deoliveira, Niels Charlier

Field Summary

Fields

Modifier and Type	Field and Description
protected GridCoverageFactory	coverageFactory
protected static int	DEFAULT_TILE_SIZE
protected File	sourceFile
protected Map<String,TileEntry>	tiles
protected static int	ZOOM_LEVEL_BASE

Fields inherited from class AbstractGridCoverage2DReader

closeMe, coverageName, crs, dtLayout, EPS, gzipped, highestRes, hints, inStream, inStreamSPI, numOverviews, originalEnvelope, originalGridRange, overViewResolutions, raster2Model, source

Fields inherited from interface GridCoverage2DReader

ELEVATION_DOMAIN, ELEVATION_DOMAIN_MAXIMUM, ELEVATION_DOMAIN_MINIMUM, ELEVATION_DOMAIN_RESOLUTION, FILE_SOURCE_PROPERTY, HAS_ELEVATION_DOMAIN, HAS_TIME_DOMAIN, MULTICRS_READER, REPROJECTING_READER, SOURCE_URL_PROPERTY, TIME_DOMAIN, TIME_DOMAIN_MAXIMUM, TIME_DOMAIN_MINIMUM, TIME_DOMAIN_RESOLUTION

Constructor Summary

Constructors

Constructor and Description
GeoPackageReader(Object source, Hints hints)

Method Summary

Modifier and Type	Method and Description
protected boolean	checkName(String coverageName) This method is responsible for checking the provided coverage name against the coverage name for this GridCoverage2DReader.
void	dispose() Disposes this reader.
CoordinateReferenceSystem	getCoordinateReferenceSystem(String coverageName) Retrieves the GeneralEnvelope for this AbstractGridCoverage2DReader.
Format	getFormat() Returns the format handled by this GridCoverageReader.
int	getGridCoverageCount() Retrieve the number of coverages contained within the input source.
String[]	getGridCoverageNames() Retrieve the list of coverages contained within the input source.
protected double[]	getHighestRes(String coverageName)
GeneralEnvelope	getOriginalEnvelope(String coverageName) Retrieves the GeneralEnvelope for this AbstractGridCoverage2DReader.
GridEnvelope	getOriginalGridRange(String coverageName) Retrieves the GeneralGridEnvelope that represents the raster grid dimensions of the highest resolution level in this dataset.
protected BufferedImage	getStartImage(BufferedImage copyFrom, int width, int height)
protected BufferedImage	getStartImage(int width, int height)
protected BufferedImage	getStartImage(int imageType, int width, int height)
GridCoverage2D	read(GeneralParameterValue[] parameters) Read the current grid coverage from the stream.
GridCoverage2D	read(String coverageName, GeneralParameterValue[] parameters) Retrieves the GridEnvelope associated to the specified coverageName for this GridCoverage2DReader.

Methods inherited from class AbstractGridCoverage2DReader

addAllSiblings, addSiblings, createImageCoverage, createImageCoverage, createImageCoverage, createImageCoverage, decimationOnReadingControl, decimationOnReadingControl, finalize, getCoordinateReferenceSystem, getCrs, getCurrentSubname, getDatasetLayout, getDatasetLayout, getDynamicParameters, getDynamicParameters, getFiles, getGroundControlPoints, getGroundControlPoints, getImageLayout, getImageLayout, getInfo, getInfo, getMetadataNames, getMetadataNames, getMetadataValue, getMetadataValue, getMultiLevelROIProvider, getNumOverviews, getNumOverviews, getOriginalEnvelope, getOriginalGridRange, getOriginalGridToWorld, getOriginalGridToWorld, getOverviewGridEnvelope, getOverviewGridEnvelope, getReadingResolutions, getReadingResolutions, getRescaledRasterToModel, getResolution, getResolutionLevels, getResolutionLevels, getSibling, getSource, getSourceAsFile, hasMoreGridCoverages, listSubNames, setlayout, setLayout, setReadParams, setReadParams, skip

Methods inherited from class Object

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

Field Detail

DEFAULT_TILE_SIZE

protected static final int DEFAULT_TILE_SIZE

See Also:

Constant Field Values

ZOOM_LEVEL_BASE

protected static final int ZOOM_LEVEL_BASE

See Also:

Constant Field Values

coverageFactory

protected GridCoverageFactory coverageFactory

sourceFile

protected File sourceFile

tiles

protected Map<String,TileEntry> tiles

Constructor Detail

GeoPackageReader

public GeoPackageReader(Object source,
                        Hints hints)
                 throws IOException

Throws:

IOException

Method Detail

getFormat

public Format getFormat()

Description copied from interface: GridCoverageReader

Returns the format handled by this GridCoverageReader.

checkName

protected boolean checkName(String coverageName)

Description copied from class: AbstractGridCoverage2DReader

This method is responsible for checking the provided coverage name against the coverage name for this GridCoverage2DReader.

Overrides:

checkName in class AbstractGridCoverage2DReader

Parameters:

coverageName - the coverage name to check.

Returns:

true if this GridCoverage2DReader contains the provided coverage name, false otherwise.

getOriginalEnvelope

public GeneralEnvelope getOriginalEnvelope(String coverageName)

Description copied from class: AbstractGridCoverage2DReader

Retrieves the GeneralEnvelope for this AbstractGridCoverage2DReader.

Specified by:

getOriginalEnvelope in interface GridCoverage2DReader

Overrides:

getOriginalEnvelope in class AbstractGridCoverage2DReader

Parameters:

coverageName - the name of the coverage to work on.

Returns:

the GeneralEnvelope for this AbstractGridCoverage2DReader.

getHighestRes

protected double[] getHighestRes(String coverageName)

Overrides:

getHighestRes in class AbstractGridCoverage2DReader

getOriginalGridRange

public GridEnvelope getOriginalGridRange(String coverageName)

Description copied from class: AbstractGridCoverage2DReader

Retrieves the GeneralGridEnvelope that represents the raster grid dimensions of the highest resolution level in this dataset.

Specified by:

getOriginalGridRange in interface GridCoverage2DReader

Overrides:

getOriginalGridRange in class AbstractGridCoverage2DReader

Parameters:

coverageName - the name of the coverage to work with

Returns:

the GeneralGridEnvelope that represents the raster grid dimensions of the highest resolution level in this dataset.

getCoordinateReferenceSystem

public CoordinateReferenceSystem getCoordinateReferenceSystem(String coverageName)

Description copied from class: AbstractGridCoverage2DReader

Retrieves the GeneralEnvelope for this AbstractGridCoverage2DReader.

Specified by:

getCoordinateReferenceSystem in interface GridCoverage2DReader

Overrides:

getCoordinateReferenceSystem in class AbstractGridCoverage2DReader

Returns:

the GeneralEnvelope for this AbstractGridCoverage2DReader.

getGridCoverageNames

public String[] getGridCoverageNames()

Description copied from interface: GridCoverageReader

Retrieve the list of coverages contained within the input source. Each grid can have a different coordinate system, number of dimensions and grid geometry. For example, a HDF-EOS file (GRID.HDF) contains 6 grid coverages each having a different projection. An empty array will be returned if no sub names exist.

Specified by:

getGridCoverageNames in interface GridCoverageReader

Overrides:

getGridCoverageNames in class AbstractGridCoverage2DReader

Returns:

The list of grid coverages contained within the input source.

getGridCoverageCount

public int getGridCoverageCount()

Description copied from interface: GridCoverageReader

Retrieve the number of coverages contained within the input source.

Specified by:

getGridCoverageCount in interface GridCoverageReader

Overrides:

getGridCoverageCount in class AbstractGridCoverage2DReader

Returns:

The number of coverages contained within the input source.

See Also:

GridCoverageReader.getGridCoverageCount()

read

public GridCoverage2D read(String coverageName,
                           GeneralParameterValue[] parameters)
                    throws IllegalArgumentException,
                           IOException

Description copied from interface: GridCoverage2DReader

Retrieves the GridEnvelope associated to the specified coverageName for this GridCoverage2DReader.

Specified by:

read in interface GridCoverage2DReader

Specified by:

read in interface GridCoverageReader

Overrides:

read in class AbstractGridCoverage2DReader

Parameters:

coverageName - the name of the coverage to work with

parameters - an array of GeneralParameterValue that uses a subset of the available read params for this GridCoverage2DReader as specified by the Format

Returns:

a GridCoverage2D for the underlying default coverage for this GridCoverage2DReader or null in case no GridCoverage2D can be read for the provided parameters.

Throws:

IllegalArgumentException - if the specified coverageName does not exist

IOException - if a read operation failed for some other input/output reason, including FileNotFoundException if no file with the given name can be found, or IIOException if an error was thrown by the underlying image library.

getStartImage

protected BufferedImage getStartImage(BufferedImage copyFrom,
                                      int width,
                                      int height)

getStartImage

protected BufferedImage getStartImage(int imageType,
                                      int width,
                                      int height)

getStartImage

protected BufferedImage getStartImage(int width,
                                      int height)

read

public GridCoverage2D read(GeneralParameterValue[] parameters)
                    throws IllegalArgumentException,
                           IOException

Description copied from class: AbstractGridCoverage2DReader

Read the current grid coverage from the stream.

Example:

The method AbstractGridCoverage2DReader.hasMoreGridCoverages() should be invoked first in order to verify that a coverage is available.

Specified by:

read in interface GridCoverage2DReader

Specified by:

read in interface GridCoverageReader

Specified by:

read in class AbstractGridCoverage2DReader

Parameters:

parameters - Optional parameters matching Format.getReadParameters().

Returns:

a grid coverage from the input source.

Throws:

InvalidParameterNameException - if a parameter in parameters doesn't have a recognized name.

InvalidParameterValueException - if a parameter in parameters doesn't have a valid value.

ParameterNotFoundException - if a parameter was required for the operation but was not provided in the parameters list.

IOException - if a read operation failed for some other input/output reason, including FileNotFoundException if no file with the given name can be found, or IIOException if an error was thrown by the underlying image library.

IllegalArgumentException

dispose

public void dispose()

Description copied from class: AbstractGridCoverage2DReader

Disposes this reader.

This method just tries to close the underlying ImageInputStream.

Specified by:

dispose in interface GridCoverageReader

Overrides:

dispose in class AbstractGridCoverage2DReader