org.apache.xmlgraphics.image.loader.pipeline
Class PipelineFactory

java.lang.Object
  org.apache.xmlgraphics.image.loader.pipeline.PipelineFactory

public class PipelineFactory
extends Object

Factory class for image processing pipelines.

Field Summary

protected static org.apache.commons.logging.Log

log logger

Constructor Summary

PipelineFactory(ImageManager manager)
Main constructor.

Method Summary

ImageProviderPipeline[]	determineCandidatePipelines(Image sourceImage, ImageFlavor[] flavors) Finds and returns an array of ImageProviderPipeline instances which can handle the convert the given Image and return one of the given ImageFlavors.
ImageProviderPipeline[]	determineCandidatePipelines(ImageInfo imageInfo, ImageFlavor targetFlavor) Determines all possible pipelines for the given image that can produce the requested target flavor.
ImageProviderPipeline[]	determineCandidatePipelines(ImageInfo imageInfo, ImageFlavor[] flavors) Finds and returns an array of ImageProviderPipeline instances which can handle the given MIME type and return one of the given ImageFlavors.
ImageProviderPipeline	newImageConverterPipeline(Image originalImage, ImageFlavor targetFlavor) Creates and returns an ImageProviderPipeline that allows to load an image of the given MIME type and present it in the requested image flavor.
ImageProviderPipeline	newImageConverterPipeline(ImageInfo imageInfo, ImageFlavor targetFlavor) Creates and returns an ImageProviderPipeline that allows to load an image of the given MIME type and present it in the requested image flavor.

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static org.apache.commons.logging.Log log

logger

Constructor Detail

PipelineFactory

public PipelineFactory(ImageManager manager)

Main constructor.

Parameters:

manager - the ImageManager instance

Method Detail

newImageConverterPipeline

public ImageProviderPipeline newImageConverterPipeline(Image originalImage,
                                                       ImageFlavor targetFlavor)

Creates and returns an ImageProviderPipeline that allows to load an image of the given MIME type and present it in the requested image flavor.

Parameters:

originalImage - the original image that serves as the origin point of the conversion

targetFlavor - the requested image flavor

Returns:

an ImageProviderPipeline or null if no suitable pipeline could be assembled

newImageConverterPipeline

public ImageProviderPipeline newImageConverterPipeline(ImageInfo imageInfo,
                                                       ImageFlavor targetFlavor)

Creates and returns an ImageProviderPipeline that allows to load an image of the given MIME type and present it in the requested image flavor.

Parameters:

imageInfo - the image info object of the original image

targetFlavor - the requested image flavor

Returns:

an ImageProviderPipeline or null if no suitable pipeline could be assembled

determineCandidatePipelines

public ImageProviderPipeline[] determineCandidatePipelines(ImageInfo imageInfo,
                                                           ImageFlavor targetFlavor)

Determines all possible pipelines for the given image that can produce the requested target flavor.

Parameters:

imageInfo - the image information

targetFlavor - the target flavor

Returns:

the candidate pipelines

determineCandidatePipelines

public ImageProviderPipeline[] determineCandidatePipelines(ImageInfo imageInfo,
                                                           ImageFlavor[] flavors)

Finds and returns an array of ImageProviderPipeline instances which can handle the given MIME type and return one of the given ImageFlavors.

Parameters:

imageInfo - the image info object

flavors - the possible target flavors

Returns:

an array of pipelines

determineCandidatePipelines

public ImageProviderPipeline[] determineCandidatePipelines(Image sourceImage,
                                                           ImageFlavor[] flavors)

Finds and returns an array of ImageProviderPipeline instances which can handle the convert the given Image and return one of the given ImageFlavors.

Parameters:

sourceImage - the image to be converted

flavors - the possible target flavors

Returns:

an array of pipelines