javax.media.jai.operator
Class URLDescriptor

java.lang.Object
  javax.media.jai.OperationDescriptorImpl
      javax.media.jai.operator.URLDescriptor

All Implemented Interfaces:

OperationDescriptor, RegistryElementDescriptor, Serializable

public class URLDescriptor

extends OperationDescriptorImpl

An OperationDescriptor describing the "URL" operation.

The URL operation creates an output image whose source is specified by a Uniform Resource Locator (URL).

The allowable formats are those registered with the com.sun.media.jai.codec.ImageCodec class.

The second parameter contains an instance of ImageDecodeParam to be used during the decoding. It may be set to null in order to perform default decoding, or equivalently may be omitted.

The classes in the com.sun.media.jai.codec package are not a committed part of the JAI API. Future releases of JAI will make use of new classes in their place. This class will change accordingly.

Resource List

Name	Value
GlobalName	fileload
LocalName	fileload
Vendor	com.sun.media.jai
Description	Reads an image from a file.
DocURL	http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/operator/URLDescriptor.html
Version	1.0
arg0Desc	The path of the file to read from.
arg1Desc	The ImageDecodeParam to use.

Parameter List

Name	Class Type	Default Value
URL	java.net.URL	NO_PARAMETER_DEFAULT
param	com.sun.media.jai.codec.ImageDecodeParam	null

See Also:

OperationDescriptor, Serialized Form

Field Summary

Fields inherited from class javax.media.jai.OperationDescriptorImpl

sourceNames, supportedModes

Fields inherited from interface javax.media.jai.OperationDescriptor

NO_PARAMETER_DEFAULT

Constructor Summary

URLDescriptor()
Constructor.

Method Summary

static RenderedOp

create(URL URL, ImageDecodeParam param, RenderingHints hints) Reads an image from a URL.

Methods inherited from class javax.media.jai.OperationDescriptorImpl

arePropertiesSupported, getDefaultSourceClass, getDestClass, getDestClass, getInvalidRegion, getName, getNumParameters, getNumSources, getParamClasses, getParamDefaults, getParamDefaultValue, getParameterListDescriptor, getParamMaxValue, getParamMinValue, getParamNames, getPropertyGenerators, getPropertyGenerators, getRenderableDestClass, getRenderableSourceClasses, getResourceBundle, getResources, getSourceClasses, getSourceClasses, getSourceNames, getSupportedModes, isImmediate, isModeSupported, isRenderableSupported, isRenderedSupported, makeDefaultSourceClassList, validateArguments, validateArguments, validateParameters, validateParameters, validateRenderableArguments, validateRenderableSources, validateSources, validateSources

Methods inherited from class java.lang.Object

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

Constructor Detail

URLDescriptor

public URLDescriptor()

Constructor.

Method Detail

create

public static RenderedOp create(URL URL,
                                ImageDecodeParam param,
                                RenderingHints hints)

Reads an image from a URL.

Creates a ParameterBlockJAI from all supplied arguments except hints and invokes JAI.create(String,ParameterBlock,RenderingHints).

Parameters:

URL - The URL to read from.

param - The ImageDecodeParam to use. May be null.

hints - The RenderingHints to use. May be null.

Returns:

The RenderedOp destination.

Throws:

IllegalArgumentException - if URL is null.

See Also:

JAI, ParameterBlockJAI, RenderedOp