javax.imageio.spi.ServiceRegistry#getServiceProviderByClass ( )源码实例Demo

下面列出了javax.imageio.spi.ServiceRegistry#getServiceProviderByClass ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： healthcare-dicom-dicomweb-adapter 文件： J2KImageReaderSpi.java

public void onRegistration(ServiceRegistry registry,
                           Class category) {
    if (registered) {
        return;
    }
	
    registered = true;

    // Set pairwise ordering to give codecLib reader precedence.
    Class codecLibReaderSPIClass = null;
    try {
        codecLibReaderSPIClass =
            Class.forName("com.github.jaiimageio.jpeg2000.impl.J2KImageReaderCodecLibSpi");
    } catch(Throwable t) {
        // Ignore it.
    }

    if(codecLibReaderSPIClass != null) {
        Object codecLibReaderSPI =
            registry.getServiceProviderByClass(codecLibReaderSPIClass);
        if(codecLibReaderSPI != null) {
            registry.setOrdering(category, codecLibReaderSPI, this);
        }
    }
}

源代码2 项目： healthcare-dicom-dicomweb-adapter 文件： J2KImageWriterSpi.java

public void onRegistration(ServiceRegistry registry,
                           Class category) {
    if (registered) {
        return;
    }
	
    registered = true;

    // Set pairwise ordering to give codecLib writer precedence.
    Class codecLibWriterSPIClass = null;
    try {
        codecLibWriterSPIClass =
            Class.forName("com.github.jaiimageio.jpeg2000.impl.J2KImageWriterCodecLibSpi");
    } catch(Throwable t) {
        // Ignore it.
    }

    if(codecLibWriterSPIClass != null) {
        Object codecLibWriterSPI =
            registry.getServiceProviderByClass(codecLibWriterSPIClass);
        if(codecLibWriterSPI != null) {
            registry.setOrdering(category, codecLibWriterSPI, this);
        }
    }
}

源代码3 项目： openjdk-jdk9 文件： OrderingTest.java

public OrderingTest() {

         ServiceRegistry reg = IIORegistry.getDefaultInstance();
         ImageReaderSpi gifSpi = (ImageReaderSpi) reg.getServiceProviderByClass(com.sun.imageio.plugins.gif.GIFImageReaderSpi.class);
         ImageReaderSpi pngSpi = (ImageReaderSpi) reg.getServiceProviderByClass(com.sun.imageio.plugins.png.PNGImageReaderSpi.class);

         boolean ordered = reg.setOrdering(ImageReaderSpi.class, gifSpi, pngSpi);

         ordered = reg.setOrdering(ImageReaderSpi.class, pngSpi, gifSpi);

         boolean unordered = reg.unsetOrdering(ImageReaderSpi.class, gifSpi,
                                               pngSpi);
         boolean unordered1 = reg.unsetOrdering(ImageReaderSpi.class, gifSpi,
                                                pngSpi);

         if (unordered1) {
             throw new RuntimeException("FAIL: Ordering 2 spi objects in the  "
                                        + "reverse direction does not remove the previous ordering "
                                        + "set between the spi objects and hence unsetOrdering() "
                                        + "returns true for the same spi objects when called consecutively");
         } else {
             System.out.println("PASS");
         }

     }

源代码4 项目： openjdk-jdk9 文件： DeregisterOrderedSpiTest.java

public DeregisterOrderedSpiTest() {

         try {

             ServiceRegistry reg = IIORegistry.getDefaultInstance();
             ImageReaderSpi gifSpi = (ImageReaderSpi) reg.getServiceProviderByClass(com.sun.imageio.plugins.gif.GIFImageReaderSpi.class);
             ImageReaderSpi pngSpi = (ImageReaderSpi) reg.getServiceProviderByClass(com.sun.imageio.plugins.png.PNGImageReaderSpi.class);
             ImageReaderSpi jpgSpi = (ImageReaderSpi) reg.getServiceProviderByClass(com.sun.imageio.plugins.jpeg.JPEGImageReaderSpi.class);
             ImageReaderSpi bmpSpi = (ImageReaderSpi) reg.getServiceProviderByClass(com.sun.imageio.plugins.bmp.BMPImageReaderSpi.class);

             boolean ordered = reg.setOrdering(ImageReaderSpi.class, pngSpi,
                                               gifSpi);

             ordered = reg.setOrdering(ImageReaderSpi.class, gifSpi, jpgSpi);
             ordered = reg.setOrdering(ImageReaderSpi.class, bmpSpi, gifSpi);
             reg.deregisterServiceProvider(gifSpi);
             System.out.println("PASS");

         } catch (Exception e) {
             System.out.println("FAIL");
             throw new RuntimeException("Deregistering a spi object involved in some "
                                        + "ordering throws the following exception: " + e.toString());
         }
     }

源代码5 项目： jdk8u_jdk 文件： OrderingTest.java

public OrderingTest() {

         ServiceRegistry reg = IIORegistry.getDefaultInstance();
         ImageReaderSpi gifSpi = (ImageReaderSpi) reg.getServiceProviderByClass(com.sun.imageio.plugins.gif.GIFImageReaderSpi.class);
         ImageReaderSpi pngSpi = (ImageReaderSpi) reg.getServiceProviderByClass(com.sun.imageio.plugins.png.PNGImageReaderSpi.class);

         boolean ordered = reg.setOrdering(ImageReaderSpi.class, gifSpi, pngSpi);

         ordered = reg.setOrdering(ImageReaderSpi.class, pngSpi, gifSpi);

         boolean unordered = reg.unsetOrdering(ImageReaderSpi.class, gifSpi,
                                               pngSpi);
         boolean unordered1 = reg.unsetOrdering(ImageReaderSpi.class, gifSpi,
                                                pngSpi);

         if (unordered1) {
             throw new RuntimeException("FAIL: Ordering 2 spi objects in the  "
                                        + "reverse direction does not remove the previous ordering "
                                        + "set between the spi objects and hence unsetOrdering() "
                                        + "returns true for the same spi objects when called consecutively");
         } else {
             System.out.println("PASS");
         }

     }

源代码6 项目： jdk8u_jdk 文件： DeregisterOrderedSpiTest.java

public DeregisterOrderedSpiTest() {

         try {

             ServiceRegistry reg = IIORegistry.getDefaultInstance();
             ImageReaderSpi gifSpi = (ImageReaderSpi) reg.getServiceProviderByClass(com.sun.imageio.plugins.gif.GIFImageReaderSpi.class);
             ImageReaderSpi pngSpi = (ImageReaderSpi) reg.getServiceProviderByClass(com.sun.imageio.plugins.png.PNGImageReaderSpi.class);
             ImageReaderSpi jpgSpi = (ImageReaderSpi) reg.getServiceProviderByClass(com.sun.imageio.plugins.jpeg.JPEGImageReaderSpi.class);
             ImageReaderSpi bmpSpi = (ImageReaderSpi) reg.getServiceProviderByClass(com.sun.imageio.plugins.bmp.BMPImageReaderSpi.class);

             boolean ordered = reg.setOrdering(ImageReaderSpi.class, pngSpi,
                                               gifSpi);

             ordered = reg.setOrdering(ImageReaderSpi.class, gifSpi, jpgSpi);
             ordered = reg.setOrdering(ImageReaderSpi.class, bmpSpi, gifSpi);
             reg.deregisterServiceProvider(gifSpi);
             System.out.println("PASS");

         } catch (Exception e) {
             System.out.println("FAIL");
             throw new RuntimeException("Deregistering a spi object involved in some "
                                        + "ordering throws the following exception: " + e.toString());
         }
     }

方法所在类

javax.imageio.spi.ServiceRegistry