Name: dkR10031 Date: 04/10/2001


Specification of the method
javax.imageio.metadata.IIOMetadataFormatImpl.getAttributeDescription says:

"Throws: ...
         IllegalArgumentException - if attrName is null or is not a legal
         attribute name for this element."

However, the implementation (JDK 1.4.0beta, build b59) of the method does
not throw IllegalArgumentException when given non-existent attribute name.

This bug causes failure of new JCK test:
api/javax_imageio/metadata/IIOMetadataFormatImpl/index.html#getAttributeDescription

To reproduce the bug run the following test:

------------ test04.java ------------------------
import javax.imageio.metadata.IIOMetadataFormatImpl;
import javax.imageio.ImageTypeSpecifier;

class test04 {

    public static void main(String argv[]) {
        String result;
        
        MyFormatImpl fmt = new MyFormatImpl("root", 1, 10);
        fmt.addAttribute("root", "attr", fmt.DATATYPE_INTEGER, true, 2, 5);

        try {
            result = fmt.getAttributeDescription("root", "non-existent", null);
            System.out.println("failed: no IllegalArgumentException");
        } catch(IllegalArgumentException e) {
            System.out.println("passed");
        }
    }
}


class MyFormatImpl extends IIOMetadataFormatImpl {

    MyFormatImpl(String root, int minChildren, int maxChildren) {
        super(root, minChildren, maxChildren);
    }

    public void addAttribute(String elementName, String attrName, int dataType,
                             boolean required, int listMinLength, int listMaxLength) {
        super.addAttribute(elementName, attrName, dataType, required, listMinLength,
listMaxLength);
    }

    public boolean canNodeAppear(String elementName, ImageTypeSpecifier imageType) {
        return true;
    }
}
------------ Logs -----------------------------
$ java -version
java version "1.4.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta-b59)
Java HotSpot(TM) Client VM (build 1.4.0-beta-b59, mixed mode)

$ javac test04.java

$ java test04
failed: no IllegalArgumentException

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