Examples of org.apache.xmlgraphics.image.loader.pipeline.ImageProviderPipeline.execute()

Package org.apache.xmlgraphics.image.loader.pipeline

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

Examples of org.apache.xmlgraphics.image.loader.pipeline.ImageProviderPipeline.execute()

org.apache.xmlgraphics.image.loader.pipeline.ImageProviderPipeline.execute()
Executes the image converter pipeline. First, the image indicated by the ImageInfo instance is loaded through an ImageLoader and then optionally converted by a series of ImageConverters. At the end of the pipeline, the fully loaded and converted image is returned. @param info the image info object indicating the image to load @param hints a Map of image conversion hints @param context the session context @return the requested image @throws ImageException if an error occurs while loader or converting the image @throws IOException if an I/O error occurs

        
        Image img = null;
        ImageProviderPipeline pipeline = getPipelineFactory().newImageConverterPipeline(
                info, flavor);
        if (pipeline != null) {
            img = pipeline.execute(info, hints, session);
        }
        if (img == null) {
            throw new ImageException(
                    "Cannot load image (no suitable loader/converter combination available) for "
                        + info);

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        ImageProviderPipeline[] candidates = getPipelineFactory().determineCandidatePipelines(
                info, flavors);
        ImageProviderPipeline pipeline = choosePipeline(candidates);
        
        if (pipeline != null) {
            img = pipeline.execute(info, hints, session);
        }
        if (img == null) {
            throw new ImageException(
                    "Cannot load image (no suitable loader/converter combination available) for "
                            + info);

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        ImageProviderPipeline[] candidates = getPipelineFactory().determineCandidatePipelines(
                image, flavors);
        ImageProviderPipeline pipeline = choosePipeline(candidates);
        
        if (pipeline != null) {
            img = pipeline.execute(info, image, hints, null);
        }
        if (img == null) {
            throw new ImageException(
                    "Cannot convert image " + image 
                    + " (no suitable converter combination available)");

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        ImageLoader loader = new ImageLoaderImageIO(ImageFlavor.RENDERED_IMAGE);
        ImageProviderPipeline pipeline = new ImageProviderPipeline(manager.getCache(), loader);
        pipeline.addConverter(new ImageConverterRendered2PNG());
        
        Image img = pipeline.execute(info, null, sessionContext);
        assertNotNull("Image must not be null", img);
        assertEquals(ImageFlavor.RAW_PNG, img.getFlavor());
        assertTrue(img instanceof ImageRawStream);
    }

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        ImageProviderPipeline pipeline = new ImageProviderPipeline(manager.getCache(), null);
        pipeline.addConverter(new ImageConverterG2D2Bitmap());
        pipeline.addConverter(new ImageConverterBuffered2Rendered());
        pipeline.addConverter(new ImageConverterRendered2PNG());
        
        Image img = pipeline.execute(original.getInfo(), original, null,
                sessionContext);
        assertNotNull("Image must not be null", img);
        assertEquals(ImageFlavor.RAW_PNG, img.getFlavor());
        assertTrue(img instanceof ImageRawStream);
    }

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        ImageLoader loader = new ImageLoaderImageIO(ImageFlavor.RENDERED_IMAGE);
        ImageProviderPipeline pipeline = new ImageProviderPipeline(manager.getCache(), loader);
        pipeline.addConverter(new ImageConverterRendered2PNG());


        Image img = pipeline.execute(info, null, sessionContext);
        assertNotNull("Image must not be null", img);
        assertEquals(ImageFlavor.RAW_PNG, img.getFlavor());
        assertTrue(img instanceof ImageRawStream);


        //Original MIME type stays the same, but the flavor MIME changes

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        ImageProviderPipeline pipeline = new ImageProviderPipeline(manager.getCache(), null);
        pipeline.addConverter(new ImageConverterG2D2Bitmap());
        pipeline.addConverter(new ImageConverterBuffered2Rendered());
        pipeline.addConverter(new ImageConverterRendered2PNG());


        Image img = pipeline.execute(original.getInfo(), original, null,
                sessionContext);
        assertNotNull("Image must not be null", img);
        assertEquals(ImageFlavor.RAW_PNG, img.getFlavor());
        assertTrue(img instanceof ImageRawStream);

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        Image img = null;
        ImageProviderPipeline pipeline = getPipelineFactory().newImageConverterPipeline(
                info, flavor);
        if (pipeline != null) {
            img = pipeline.execute(info, hints, session);
        }
        if (img == null) {
            throw new ImageException(
                    "Cannot load image (no suitable loader/converter combination available) for "
                        + info);

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        ImageProviderPipeline[] candidates = getPipelineFactory().determineCandidatePipelines(
                info, flavors);
        ImageProviderPipeline pipeline = choosePipeline(candidates);


        if (pipeline != null) {
            img = pipeline.execute(info, hints, session);
        }
        if (img == null) {
            throw new ImageException(
                    "Cannot load image (no suitable loader/converter combination available) for "
                            + info);

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        ImageProviderPipeline[] candidates = getPipelineFactory().determineCandidatePipelines(
                image, flavors);
        ImageProviderPipeline pipeline = choosePipeline(candidates);


        if (pipeline != null) {
            img = pipeline.execute(info, image, hints, null);
        }
        if (img == null) {
            throw new ImageException(
                    "Cannot convert image " + image
                    + " (no suitable converter combination available)");

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