Package org.geotools.coverage.processing

Class Operation2D

Object

AbstractOperation

Operation2D

All Implemented Interfaces:

Serializable, Operation

Direct Known Subclasses:

Crop, Interpolate, OperationJAI, Resample, SelectSampleDimension

public abstract class Operation2D
extends AbstractOperation

An operation working on GridCoverage2D sources.

Since:

2.1

Author:

Martin Desruisseaux (IRD)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected static int	PRIMARY_SOURCE_INDEX	Index of the source GridCoverage2D to use as a model.
static ParameterDescriptor<GridCoverage2D>	SOURCE_0	Convenience constant for the first source GridCoverage2D.

Fields inherited from class AbstractOperation

descriptor

Constructor Summary

Constructors

Constructor	Description
Operation2D(ParameterDescriptorGroup descriptor)	Constructs an operation.

Method Summary

Modifier and Type	Method	Description
protected void	extractSources(ParameterValueGroup parameters, String[] sourceNames, GridCoverage2D[] sources)	Extracts and prepares the sources for this Operation2D
protected static GridCoverageFactory	getFactory(Hints hints)	Returns the factory to use for creating new GridCoverage2D objects.

Methods inherited from class AbstractOperation

doOperation, equals, getDescription, getDocURL, getName, getNumSources, getParameters, getVendor, getVersion, hashCode, toString

Methods inherited from class Object

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

Field Detail

PRIMARY_SOURCE_INDEX

protected static final int PRIMARY_SOURCE_INDEX

Index of the source GridCoverage2D to use as a model. The destination grid coverage will reuse the same coordinate reference system, envelope and qualitative categories than this primary source.

For operations expecting only one source, there is no ambiguity. But for operations expecting more than one source, the choice of a primary source is somewhat arbitrary. This constant is used merely as a flag for spotting those places in the code.

Since:

2.4

See Also:

Constant Field Values

SOURCE_0

public static final ParameterDescriptor<GridCoverage2D> SOURCE_0

Convenience constant for the first source GridCoverage2D. The parameter name is "Source" (as specified in OGC implementation specification) and the alias is "source0" (for compatibility with Java Advanced Imaging).

Constructor Detail

Operation2D

public Operation2D(ParameterDescriptorGroup descriptor)

Constructs an operation. The operation name will be the same than the parameter descriptor name.

Parameters:

descriptor - The parameters descriptor.

Method Detail

extractSources

protected void extractSources(ParameterValueGroup parameters,
                              String[] sourceNames,
                              GridCoverage2D[] sources)
                       throws ParameterNotFoundException,
                              InvalidParameterValueException

Extracts and prepares the sources for this Operation2D

This method fills the sources array with needed sources

Parameters:

parameters - Parameters that will control this operation.

sourceNames - Names of the sources to extract from ParameterValueGroup.

sources - On input, an array with the same length than sourceNames. On output, the GridCoverage2D to be used as sources for this operation.

Throws:

IllegalArgumentException - if an argument is null, or if sources and sourceNames doesn't have length.

ParameterNotFoundException - if a required source has not been found.

InvalidParameterValueException - if a source doesn't contain a value of type GridCoverage2D.

Since:

2.4

getFactory

protected static GridCoverageFactory getFactory(Hints hints)

Returns the factory to use for creating new GridCoverage2D objects.

Since:

2.2