Java example source code file (UserPluginMetadataFormatTest.java)
The UserPluginMetadataFormatTest.java Java example source code
/*
* Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 4929170
* @summary Tests that user-supplied IIOMetadata implementations loaded by
* system class loader (i.e. corresponding classes are available via
* classpath) is able to load correspnding IIOMetadataFormat
* implementations.
* @run main UserPluginMetadataFormatTest
*/
import java.awt.Rectangle;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.ByteArrayInputStream;
import java.util.Iterator;
import java.util.ListResourceBundle;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.Vector;
import javax.imageio.ImageIO;
import javax.imageio.ImageReader;
import javax.imageio.ImageReadParam;
import javax.imageio.IIOException;
import javax.imageio.ImageTypeSpecifier;
import javax.imageio.event.IIOReadWarningListener;
import javax.imageio.metadata.IIOMetadata;
import javax.imageio.metadata.IIOMetadataFormat;
import javax.imageio.metadata.IIOMetadataFormatImpl;
import javax.imageio.metadata.IIOInvalidTreeException;
import javax.imageio.spi.ImageReaderSpi;
import org.w3c.dom.Node;
public class UserPluginMetadataFormatTest implements MetadataTest {
public static void main(String[] argv) throws IOException {
new UserPluginMetadataFormatTest().doTest();
}
public void doTest() throws IOException {
DummyImageReaderImpl reader;
reader = new DummyImageReaderImpl(new DummyImageReaderSpiImpl());
byte[] data = new byte[1024];
ByteArrayInputStream bais =
new ByteArrayInputStream(data);
reader.setInput(ImageIO.createImageInputStream(bais));
IIOMetadata metadata = reader.getImageMetadata(1);
if(metadata == null) {
throw new RuntimeException("IIOMetada is NULL");
}
String[] formatNames = metadata.getMetadataFormatNames();
for(int j=0; j<formatNames.length; j++) {
String formatName = formatNames[j];
System.out.println("\nFormat Names : " + formatName);
try {
IIOMetadataFormat metadataFormat =
metadata.getMetadataFormat(formatName);
System.out.println(" Class Name " +
metadataFormat.getClass());
} catch(IllegalStateException ise) {
Throwable t = ise;
t.printStackTrace();
while(t.getCause() != null) {
t = t.getCause();
t.printStackTrace();
}
// test failed!
// stop applet!
System.out.println("Test faied.");
throw new RuntimeException("Test failed.", ise);
}
}
}
public static class DummyImageReaderImpl extends ImageReader {
public DummyImageReaderImpl(ImageReaderSpi originatingProvider) {
super(originatingProvider);
}
public int getNumImages(boolean allowSearch) throws IOException {
return 5;
}
public int getWidth(int imageIndex) throws IOException {
if (input == null)
throw new IllegalStateException();
if (imageIndex >= 5 || imageIndex < 0)
throw new IndexOutOfBoundsException();
return 10;
}
public int getHeight(int imageIndex) throws IOException {
if (input == null)
throw new IllegalStateException();
if (imageIndex >= 5 || imageIndex < 0)
throw new IndexOutOfBoundsException();
return 15;
}
public Iterator getImageTypes(int imageIndex) throws IOException {
if (input == null)
throw new IllegalStateException();
if (imageIndex >= 5 || imageIndex < 0)
throw new IndexOutOfBoundsException();
Vector imageTypes = new Vector();
imageTypes.add(ImageTypeSpecifier.createFromBufferedImageType
(BufferedImage.TYPE_BYTE_GRAY ));
return imageTypes.iterator();
}
public IIOMetadata getStreamMetadata() throws IOException {
return new DummyIIOMetadataImpl(true, null, null, null, null);
}
public IIOMetadata getImageMetadata(int imageIndex) throws IOException {
if (input == null)
throw new IllegalStateException();
if (imageIndex >= 5 || imageIndex < 0)
throw new IndexOutOfBoundsException();
if (seekForwardOnly) {
if (imageIndex < minIndex)
throw new IndexOutOfBoundsException();
minIndex = imageIndex;
}
System.out.println("Current format class name " + DummyIIOMetadataFormatImpl.class.getName());
return new DummyIIOMetadataImpl(true,
DummyIIOMetadataFormatImpl.nativeMetadataFormatName,
DummyIIOMetadataFormatImpl.class.getName(),
null, null);
}
public BufferedImage read(int imageIndex, ImageReadParam param)
throws IOException {
if (input == null)
throw new IllegalStateException();
if (imageIndex >= 5 || imageIndex < 0)
throw new IndexOutOfBoundsException();
if (seekForwardOnly) {
if (imageIndex < minIndex)
throw new IndexOutOfBoundsException();
minIndex = imageIndex;
}
return getDestination(param, getImageTypes(imageIndex), 10, 15);
}
// protected methods - now public
public boolean abortRequested() {
return super.abortRequested();
}
public void clearAbortRequest() {
super.clearAbortRequest();
}
public void processImageComplete() {
super.processImageComplete();
}
public void processImageProgress(float percentageDone) {
super.processImageProgress(percentageDone);
}
public void processImageStarted(int imageIndex) {
super.processImageStarted(imageIndex);
}
public void processImageUpdate(BufferedImage theImage,
int minX,
int minY,
int width,
int height,
int periodX,
int periodY,
int[] bands) {
super.processImageUpdate(theImage,
minX,
minY,
width,
height,
periodX,
periodY,
bands);
}
public void processPassComplete(BufferedImage theImage) {
super. processPassComplete(theImage);
}
public void processPassStarted(BufferedImage theImage,
int pass, int minPass,
int maxPass,
int minX,
int minY,
int periodX,
int periodY,
int[] bands) {
super.processPassStarted(theImage,
pass,
minPass,
maxPass,
minX,
minY,
periodX,
periodY,
bands);
}
public void processReadAborted() {
super.processReadAborted();
}
public void processSequenceComplete() {
super.processSequenceComplete();
}
public void processSequenceStarted(int minIndex) {
super.processSequenceStarted(minIndex);
}
public void processThumbnailComplete() {
super.processThumbnailComplete();
}
public void processThumbnailPassComplete(BufferedImage theThumbnail) {
super.processThumbnailPassComplete(theThumbnail);
}
public void processThumbnailPassStarted(BufferedImage theThumbnail,
int pass,
int minPass,
int maxPass,
int minX,
int minY,
int periodX,
int periodY,
int[] bands) {
super.processThumbnailPassStarted(theThumbnail,
pass,
minPass,
maxPass,
minX,
minY,
periodX,
periodY,
bands);
}
public void processThumbnailProgress(float percentageDone) {
super.processThumbnailProgress(percentageDone);
}
public void processThumbnailStarted(int imageIndex, int thumbnailIndex) {
super.processThumbnailStarted(imageIndex, thumbnailIndex);
}
public void processThumbnailUpdate(BufferedImage theThumbnail,
int minX,
int minY,
int width,
int height,
int periodX,
int periodY,
int[] bands) {
super.processThumbnailUpdate(theThumbnail,
minX,
minY,
width,
height,
periodX,
periodY,
bands);
}
public void processWarningOccurred(String warning) {
super.processWarningOccurred(warning);
}
public static Rectangle getSourceRegion(ImageReadParam param,
int srcWidth,
int srcHeight) {
return ImageReader.getSourceRegion(param, srcWidth, srcHeight);
}
public static void computeRegions(ImageReadParam param,
int srcWidth,
int srcHeight,
BufferedImage image,
Rectangle srcRegion,
Rectangle destRegion) {
ImageReader.computeRegions(param,
srcWidth,
srcHeight,
image,
srcRegion,
destRegion);
}
public static void checkReadParamBandSettings(ImageReadParam param,
int numSrcBands,
int numDstBands) {
ImageReader.checkReadParamBandSettings( param,
numSrcBands,
numDstBands);
}
public static BufferedImage getDestination(ImageReadParam param,
Iterator imageTypes,
int width,
int height)
throws IIOException {
return ImageReader.getDestination(param,
imageTypes,
width,
height);
}
public void setAvailableLocales(Locale[] locales) {
if (locales == null || locales.length == 0)
availableLocales = null;
else
availableLocales = (Locale[])locales.clone();
}
public void processWarningOccurred(String baseName, String keyword) {
super.processWarningOccurred(baseName, keyword);
}
}
public static class DummyIIOMetadataFormatImpl
extends IIOMetadataFormatImpl {
public static String nativeMetadataFormatName =
"javax_imageio_dummy_1.0";
private static IIOMetadataFormat instance = null;
private DummyIIOMetadataFormatImpl() {
super(DummyIIOMetadataFormatImpl.nativeMetadataFormatName,
CHILD_POLICY_SOME);
}
public boolean canNodeAppear(String elementName,
ImageTypeSpecifier imageType) {
return false;
}
public static synchronized IIOMetadataFormat getInstance() {
if (instance == null) {
instance = new DummyIIOMetadataFormatImpl();
}
return instance;
}
}
public static class DummyIIOMetadataImpl extends IIOMetadata {
public DummyIIOMetadataImpl() {
super();
}
public DummyIIOMetadataImpl(boolean standardMetadataFormatSupported,
String nativeMetadataFormatName,
String nativeMetadataFormatClassName,
String[] extraMetadataFormatNames,
String[] extraMetadataFormatClassNames) {
super(standardMetadataFormatSupported,
nativeMetadataFormatName,
nativeMetadataFormatClassName,
extraMetadataFormatNames,
extraMetadataFormatClassNames);
}
public boolean isReadOnly() {
return true;
}
public Node getAsTree(String formatName) {
return null;
}
public void mergeTree(String formatName, Node root)
throws IIOInvalidTreeException {
throw new IllegalStateException();
}
public void reset() {
throw new IllegalStateException();
}
}
public static class DummyImageReaderSpiImpl extends ImageReaderSpi {
static final String[] names ={ "myformat" };
public DummyImageReaderSpiImpl() {
super("vendorName",
"version",
names,
null,
null,
"DummyImageReaderImpl",
STANDARD_INPUT_TYPE,
null,
true,
null,
null,
null,
null,
true,
null,
null,
null,
null);
}
public boolean canDecodeInput(Object source)
throws IOException {
return true;
}
public ImageReader createReaderInstance(Object extension)
throws IOException {
return new DummyImageReaderImpl(this);
}
public String getDescription(Locale locale) {
return "DummyImageReaderSpiImpl";
}
}
}
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