org.esa.snap.core.gpf

Class GPF

java.lang.Object

org.esa.snap.core.gpf.GPF

public class GPF
extends Object

The facade for the Graph Processing Framework.

The Graph Processing Framework makes extensive use of Java Advanced Imaging (JAI). Therefore, configuring the JAI TileCache and TileScheduler will also affect the overall performance of the Graph Processing Framework.

This class may be overridden in order to alter product creation behaviour of the static createProduct methods of the GPF instance. The current instance can be set by setDefaultInstance(GPF).

Since:

4.1

Field Summary

Fields

Modifier and Type	Field and Description
static String	DISABLE_TILE_CACHE_PROPERTY
static RenderingHints.Key	KEY_TILE_SIZE Key for GPF tile size RenderingHints.
static Map<String,Object>	NO_PARAMS An unmodifiable empty Map.
static Map<String,Product>	NO_SOURCES An unmodifiable empty Map.
static String	SOURCE_PRODUCT_FIELD_NAME
static String	TARGET_PRODUCT_FIELD_NAME
static String	TILE_COMPUTATION_OBSERVER_PROPERTY
static String	USE_FILE_TILE_CACHE_PROPERTY

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	GPF() Constructor.

Method Summary

Modifier and Type	Method and Description
Operator	createOperator(String operatorName, Map<String,Object> parameters, Map<String,Product> sourceProducts, RenderingHints renderingHints) Creates an operator instance by using the given operator (alias) name.
static Product	createProduct(String operatorName, Map<String,Object> parameters) Creates a product by using the operator specified by the given name.
static Product	createProduct(String operatorName, Map<String,Object> parameters, Map<String,Product> sourceProducts) Creates a product by using the operator specified by the given name.
static Product	createProduct(String operatorName, Map<String,Object> parameters, Map<String,Product> sourceProducts, RenderingHints renderingHints) Creates a product by using the operator specified by the given name.
static Product	createProduct(String operatorName, Map<String,Object> parameters, Product... sourceProducts) Creates a product by using the operator specified by the given name.
static Product	createProduct(String operatorName, Map<String,Object> parameters, Product sourceProduct) Creates a product by using the operator specified by the given name.
static Product	createProduct(String operatorName, Map<String,Object> parameters, Product[] sourceProducts, RenderingHints renderingHints) Creates a product by using the operator specified by the given name.
static Product	createProduct(String operatorName, Map<String,Object> parameters, Product sourceProduct, RenderingHints renderingHints) Creates a product by using the operator specified by the given name.
static Product	createProduct(String operatorName, Map<String,Object> parameters, RenderingHints renderingHints) Creates a product by using the operator specified by the given name.
Product	createProductNS(String operatorName, Map<String,Object> parameters, Map<String,Product> sourceProducts, RenderingHints renderingHints) Creates a product by using the operator specified by the given name.
static GPF	getDefaultInstance() Gets the default GPF instance.
OperatorSpiRegistry	getOperatorSpiRegistry() Gets the registry for operator SPIs.
ProductManager	getProductManager() Gets the context product manager which can be used to exchange product instances across operators or allow (reading) operators to check if a given product is already opened.
static void	setDefaultInstance(GPF defaultInstance) Sets the default GPF instance.
void	setOperatorSpiRegistry(OperatorSpiRegistry spiRegistry) Sets the registry for operator SPIs.
void	setProductManager(ProductManager productManager) Sets the context product manager which can be used to exchange product instances across operators or allow (reading) operators to check if a given product is already opened.
static void	writeProduct(Product product, File file, String formatName, boolean clearCacheAfterRowWrite, boolean incremental, ProgressMonitor pm) Writes a product with the specified format to the given file.
static void	writeProduct(Product product, File file, String formatName, boolean incremental, ProgressMonitor pm) Writes a product with the specified format to the given file.

Methods inherited from class java.lang.Object

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

Field Detail

DISABLE_TILE_CACHE_PROPERTY

public static final String DISABLE_TILE_CACHE_PROPERTY

See Also:

Constant Field Values

USE_FILE_TILE_CACHE_PROPERTY

public static final String USE_FILE_TILE_CACHE_PROPERTY

See Also:

Constant Field Values

TILE_COMPUTATION_OBSERVER_PROPERTY

public static final String TILE_COMPUTATION_OBSERVER_PROPERTY

See Also:

Constant Field Values

SOURCE_PRODUCT_FIELD_NAME

public static final String SOURCE_PRODUCT_FIELD_NAME

See Also:

Constant Field Values

TARGET_PRODUCT_FIELD_NAME

public static final String TARGET_PRODUCT_FIELD_NAME

See Also:

Constant Field Values

KEY_TILE_SIZE

public static final RenderingHints.Key KEY_TILE_SIZE

Key for GPF tile size RenderingHints.

The value for this key must be an instance of Dimension with both width and height positive.

NO_PARAMS

public static final Map<String,Object> NO_PARAMS

An unmodifiable empty Map.

Can be used for convenience as a parameter for createProduct() if no parameters are needed for the operator.

See Also:

createProduct(String, Map), createProduct(String, Map, Product ...), createProduct(String, Map, Map)

NO_SOURCES

public static final Map<String,Product> NO_SOURCES

An unmodifiable empty Map.

Can be used for convenience as a parameter for createProduct(String, Map, Map) if no source products are needed for the operator.

See Also:

createProduct(String, Map, Map)

Constructor Detail

GPF

protected GPF()

Constructor.

Method Detail

createProduct

public static Product createProduct(String operatorName,
                                    Map<String,Object> parameters)
                             throws OperatorException

Creates a product by using the operator specified by the given name. The resulting product can be used as input product for a further call to createProduct(). By concatenating multiple calls it is possible to set up a processing graph.

Parameters:

operatorName - the name of the operator to use.

parameters - the named parameters needed by the operator.

Returns:

the product created by the operator.

Throws:

OperatorException - if the product could not be created.

createProduct

public static Product createProduct(String operatorName,
                                    Map<String,Object> parameters,
                                    RenderingHints renderingHints)
                             throws OperatorException

Creates a product by using the operator specified by the given name. The resulting product can be used as input product for a further call to createProduct(). By concatenating multiple calls it is possible to set up a processing graph.

Parameters:

operatorName - the name of the operator to use.

parameters - the named parameters needed by the operator.

renderingHints - the rendering hints may be null.

Returns:

the product created by the operator.

Throws:

OperatorException - if the product could not be created.

createProduct

public static Product createProduct(String operatorName,
                                    Map<String,Object> parameters,
                                    Product sourceProduct)
                             throws OperatorException

Creates a product by using the operator specified by the given name. The resulting product can be used as input product for a further call to createProduct(). By concatenating multiple calls it is possible to set up a processing graph.

Parameters:

operatorName - the name of the operator to use.

parameters - the named parameters needed by the operator.

sourceProduct - a source product.

Returns:

the product created by the operator.

Throws:

OperatorException - if the product could not be created.

createProduct

public static Product createProduct(String operatorName,
                                    Map<String,Object> parameters,
                                    Product sourceProduct,
                                    RenderingHints renderingHints)
                             throws OperatorException

Creates a product by using the operator specified by the given name. The resulting product can be used as input product for a further call to createProduct(). By concatenating multiple calls it is possible to set up a processing graph.

Parameters:

operatorName - the name of the operator to use.

parameters - the named parameters needed by the operator.

sourceProduct - the source product.

renderingHints - the rendering hints may be null.

Returns:

the product created by the operator.

Throws:

OperatorException - if the product could not be created.

createProduct

public static Product createProduct(String operatorName,
                                    Map<String,Object> parameters,
                                    Product... sourceProducts)
                             throws OperatorException

Creates a product by using the operator specified by the given name. The resulting product can be used as input product for a further call to createProduct(). By concatenating multiple calls it is possible to set up a processing graph.

Parameters:

operatorName - the name of the operator to use.

parameters - the named parameters needed by the operator.

sourceProducts - the source products.

Returns:

the product created by the operator.

Throws:

OperatorException - if the product could not be created.

createProduct

public static Product createProduct(String operatorName,
                                    Map<String,Object> parameters,
                                    Product[] sourceProducts,
                                    RenderingHints renderingHints)
                             throws OperatorException

Creates a product by using the operator specified by the given name. The resulting product can be used as input product for a further call to createProduct(). By concatenating multiple calls it is possible to set up a processing graph.

Parameters:

operatorName - the name of the operator to use.

parameters - the named parameters needed by the operator.

sourceProducts - the source products.

renderingHints - the rendering hints may be null.

Returns:

the product created by the operator.

Throws:

OperatorException - if the product could not be created.

createProduct

public static Product createProduct(String operatorName,
                                    Map<String,Object> parameters,
                                    Map<String,Product> sourceProducts)
                             throws OperatorException

Creates a product by using the operator specified by the given name. The resulting product can be used as input product for a further call to createProduct(). By concatenating multiple calls it is possible to set up a processing graph.

Parameters:

operatorName - the name of the operator to use.

parameters - the named parameters needed by the operator.

sourceProducts - the map of named source products.

Returns:

the product created by the operator.

Throws:

OperatorException - if the product could not be created.

createProduct

public static Product createProduct(String operatorName,
                                    Map<String,Object> parameters,
                                    Map<String,Product> sourceProducts,
                                    RenderingHints renderingHints)
                             throws OperatorException

Creates a product by using the operator specified by the given name. The resulting product can be used as input product for a further call to createProduct(). By concatenating multiple calls it is possible to set up a processing graph.

Parameters:

operatorName - the name of the operator to use.

parameters - the named parameters needed by the operator.

sourceProducts - the map of named source products.

renderingHints - the rendering hints, may be null.

Returns:

the product created by the operator.

Throws:

OperatorException - if the product could not be created.

createProductNS

public Product createProductNS(String operatorName,
                               Map<String,Object> parameters,
                               Map<String,Product> sourceProducts,
                               RenderingHints renderingHints)

Creates a product by using the operator specified by the given name. The resulting product can be used as input product for a further call to createProduct(). By concatenating multiple calls it is possible to set up a processing graph.

All static createProduct methods delegate to this non-static (= NS) version. It can be overriden by clients in order to alter product creation behaviour of the static createProduct methods of the current GPF instance.

Parameters:

operatorName - the name of the operator to use.

parameters - the named parameters needed by the operator.

sourceProducts - the map of named source products.

renderingHints - the rendering hints, may be null.

Returns:

the product created by the operator.

Throws:

OperatorException - if the product could not be created.

createOperator

public Operator createOperator(String operatorName,
                               Map<String,Object> parameters,
                               Map<String,Product> sourceProducts,
                               RenderingHints renderingHints)

Creates an operator instance by using the given operator (alias) name.

Parameters:

operatorName - the name of the operator to use.

parameters - the named parameters needed by the operator.

sourceProducts - the map of named source products.

renderingHints - the rendering hints, may be null.

Returns:

the product created by the operator.

Throws:

OperatorException - if the product could not be created.

Since:

BEAM 4.9

getOperatorSpiRegistry

public OperatorSpiRegistry getOperatorSpiRegistry()

Gets the registry for operator SPIs.

Returns:

the registry for operator SPIs.

setOperatorSpiRegistry

public void setOperatorSpiRegistry(OperatorSpiRegistry spiRegistry)

Sets the registry for operator SPIs.

Parameters:

spiRegistry - the registry for operator SPIs.

getDefaultInstance

public static GPF getDefaultInstance()

Gets the default GPF instance.

Returns:

the singelton instance.

setDefaultInstance

public static void setDefaultInstance(GPF defaultInstance)

Sets the default GPF instance.

Parameters:

defaultInstance - the GPF default instance.

writeProduct

public static void writeProduct(Product product,
                                File file,
                                String formatName,
                                boolean incremental,
                                ProgressMonitor pm)

Writes a product with the specified format to the given file.

Parameters:

product - the product

file - the product file

formatName - the name of a supported product format, e.g. "HDF5". If null, the default format "BEAM-DIMAP" will be used

incremental - switch the product writer in incremental mode or not.

pm - a monitor to inform the user about progress

writeProduct

public static void writeProduct(Product product,
                                File file,
                                String formatName,
                                boolean clearCacheAfterRowWrite,
                                boolean incremental,
                                ProgressMonitor pm)

Writes a product with the specified format to the given file.

Parameters:

product - the product

file - the product file

formatName - the name of a supported product format, e.g. "HDF5". If null, the default format "BEAM-DIMAP" will be used

clearCacheAfterRowWrite - if true, the internal tile cache is cleared after a tile row has been written.

incremental - switch the product writer in incremental mode or not.

pm - a monitor to inform the user about progress

getProductManager

public ProductManager getProductManager()

Gets the context product manager which can be used to exchange product instances across operators or allow (reading) operators to check if a given product is already opened.

Returns:

The context product manager.

Since:

SNAP 3.0

setProductManager

public void setProductManager(ProductManager productManager)

Sets the context product manager which can be used to exchange product instances across operators or allow (reading) operators to check if a given product is already opened.

Parameters:

productManager - The new context product manager.

Since:

SNAP 3.0