Package org.geotools.coverageio.gdal

Class BaseGDALGridFormat

Object

AbstractGridFormat

BaseGDALGridFormat

All Implemented Interfaces:

Format

Direct Known Subclasses:

AIGFormat, DTEDFormat, ECWFormat, EnviHdrFormat, ErdasImgFormat, EsriHdrFormat, IDRISIFormat, JP2ECWFormat, JP2KFormat, JP2MrSIDFormat, MrSIDFormat, NITFFormat, RPFTOCFormat, SRPFormat, VRTFormat, VSIFormat

public abstract class BaseGDALGridFormat
extends AbstractGridFormat
implements Format

A Base abstract class implementing Format, to be extended by Formats leveraging on GDAL.

Author:

Daniele Romagnoli, GeoSolutions, Simone Giannecchini, GeoSolutions

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	BaseGDALGridFormat.InfoWrapper

Field Summary

Fields

Modifier and Type	Field	Description
protected static final GeneralParameterDescriptor[]	PARAM_DESCRIPTOR	Base Parameter Descriptor
static final DefaultParameterDescriptor<Boolean>	USE_MULTITHREADING	This GeneralParameterValue can be provided to the GridCoverageReaders through the GridCoverageReader.read(GeneralParameterValue[]) method in order to specify to use multithreading when leveraging on a JAI ImageRead operation.

Fields inherited from class AbstractGridFormat

BACKGROUND_COLOR, BANDS, DECIMATION_POLICY, ELEVATION, FOOTPRINT_BEHAVIOR, GEOTOOLS_WRITE_PARAMS, INPUT_TRANSPARENT_COLOR, INTERPOLATION, mInfo, OVERVIEW_POLICY, PROGRESS_LISTENER, READ_GRIDGEOMETRY2D, readParameters, RESCALE_PIXELS, SUGGESTED_TILE_SIZE, TILE_SIZE_SEPARATOR, TIME, USE_JAI_IMAGEREAD, writeParameters

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	BaseGDALGridFormat(ImageReaderSpi spi)	Constructor for the BaseGDALGridFormat.

Method Summary

Modifier and Type	Method	Description
boolean	accepts(Object input, Hints hints)	Tells me if this Format can read the provided input.
GeoToolsWriteParams	getDefaultImageIOWriteParameters()	Returns an instance of ImageWriteParam that can be used to control a subsequent GridCoverageWriter.write(org.geotools.api.coverage.grid.GridCoverage, org.geotools.api.parameter.GeneralParameterValue[]);
protected static ParameterGroup	getDefaultParameterGroup(Map<String,String> mInfo)	Return a ParameterGroup with default General Parameter Descriptors.
AbstractGridCoverage2DReader	getReader(Object source)	Gets a GridCoverageReader for this format able to create coverages out of the source object.
GridCoverageWriter	getWriter(Object destination)	Retrieves a GridCoverageWriter suitable for writing to the provided destination with this format.
GridCoverageWriter	getWriter(Object destination, Hints hints)	Call the accepts() method before asking for a writer to determine if the current object is supported.
protected abstract void	setInfo()	Each plugin needs to implement this method defining format specific properties
protected void	setInfo(BaseGDALGridFormat.InfoWrapper infoWrapper)

Methods inherited from class AbstractGridFormat

accepts, equals, getDefaultCRS, getDescription, getDocURL, getName, getReader, getReadParameters, getVendor, getVersion, getWriteParameters

Methods inherited from class Object

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

Methods inherited from interface Format

getDescription, getDocURL, getName, getReadParameters, getVendor, getVersion, getWriteParameters

Field Details

USE_MULTITHREADING

public static final DefaultParameterDescriptor<Boolean> USE_MULTITHREADING

This GeneralParameterValue can be provided to the GridCoverageReaders through the GridCoverageReader.read(GeneralParameterValue[]) method in order to specify to use multithreading when leveraging on a JAI ImageRead operation. This will be achieved with the use of the ImageReadMT operation of the ImageIO-Ext.

PARAM_DESCRIPTOR

protected static final GeneralParameterDescriptor[] PARAM_DESCRIPTOR

Base Parameter Descriptor

Constructor Details

BaseGDALGridFormat

protected BaseGDALGridFormat(ImageReaderSpi spi)

Constructor for the BaseGDALGridFormat. It is invoked by the underlying implementations.

Parameters:

spi - the format specific ImageReaderSpi instance

Method Details

setInfo

protected abstract void setInfo()

Each plugin needs to implement this method defining format specific properties

getWriter

public GridCoverageWriter getWriter(Object destination)

Description copied from class: AbstractGridFormat

Retrieves a GridCoverageWriter suitable for writing to the provided destination with this format.

In case no writers are available null is returned.

Specified by:

getWriter in class AbstractGridFormat

Parameters:

destination - The destinatin where to write.

Returns:

A GridCoverageWriter suitable for writing to the provided destination with this format.

See Also:

• Actually, the plugin does not support write capabilities. The method throws an UnsupportedOperationException.

getDefaultImageIOWriteParameters

public GeoToolsWriteParams getDefaultImageIOWriteParameters()

Description copied from class: AbstractGridFormat

Returns an instance of ImageWriteParam that can be used to control a subsequent GridCoverageWriter.write(org.geotools.api.coverage.grid.GridCoverage, org.geotools.api.parameter.GeneralParameterValue[]);

Be careful with using the ImageWriteParam since their usage is still experimental.

Specified by:

getDefaultImageIOWriteParameters in class AbstractGridFormat

Returns:

an instance of ImageWriteParam.

See Also:

• Actually, the plugin does not support write capabilities. The method throws an UnsupportedOperationException.

getWriter

public GridCoverageWriter getWriter(Object destination,
 Hints hints)

Description copied from class: AbstractGridFormat

Call the accepts() method before asking for a writer to determine if the current object is supported.

Specified by:

getWriter in class AbstractGridFormat

Parameters:

destination - the destination object to write a WorldImage to

hints - Hints to control the internal machinery.

Returns:

a new WorldImageWriter for the destination

See Also:

• Actually, the plugin does not support write capabilities. The method throws an UnsupportedOperationException.

accepts

public boolean accepts(Object input,
 Hints hints)

Description copied from class: AbstractGridFormat

Tells me if this Format can read the provided input.

Specified by:

accepts in class AbstractGridFormat

Parameters:

input - The input object to test for suitability.

hints - Hints to control the accepts internal machinery.

Returns:

True if this format can read this object, False otherwise.

See Also:

• org.geotools.data.coverage.grid.AbstractGridFormat#accepts(java.lang.Object input)

getDefaultParameterGroup

protected static ParameterGroup getDefaultParameterGroup(Map<String,String> mInfo)

Return a ParameterGroup with default General Parameter Descriptors.

Parameters:

mInfo - Set of properties info

Returns:

a ParameterGroup with Default GeneralParameterDescriptors.

getReader

public AbstractGridCoverage2DReader getReader(Object source)

Description copied from class: AbstractGridFormat

Gets a GridCoverageReader for this format able to create coverages out of the source object.

In case this Format cannot reader the provided source object null is returned.

Specified by:

getReader in class AbstractGridFormat

Parameters:

source - The source object to parse.

Returns:

A reader for this Format or null.

See Also:

• org.geotools.data.coverage.grid.AbstractGridFormat#getReader(Object source)

setInfo

protected void setInfo(BaseGDALGridFormat.InfoWrapper infoWrapper)