The ISG+IRT/JIM System - Overview (Appendix)

Appendix

A. InfopipeSpec.dtd

<!ELEMENT InfopipeSpec (InputDTD?, OutputDTD?, Method+)>
<!ATTLIST InfopipeSpec id CDATA #REQUIRED>

  <!ELEMENT InputDTD (#PCDATA)>
  <!ELEMENT OutputDTD (#PCDATA)>

  <!ELEMENT Method (InArgs?, InoutArgs?, OutArgs?)>
  <!ATTLIST Method id    CDATA #REQUIRED>
  <!ATTLIST Method match CDATA #REQUIRED>

    <!ELEMENT InArgs (Arg+)>
    <!ATTLIST InArgs id CDATA #REQUIRED>

    <!ELEMENT InoutArgs (Arg+)>
    <!ATTLIST InoutArgs id CDATA #REQUIRED>

    <!ELEMENT OutArgs (Arg+)>
    <!ATTLIST OutArgs id CDATA #REQUIRED>

      <!ELEMENT Arg (#PCDATA)>
      <!ATTLIST Arg type CDATA #REQUIRED>
      <!ATTLIST Arg id CDATA #REQUIRED>

B. Example of the Jabber Messaging XML Stream

The following example of the Jabber messaging stream is not exactly the same as the authors use.

<stream:stream to="infosphere.org" xmlns="jabber:client" ...>
<iq type="set" id="1">
  <query xmlns="jabber:iq:auth">
    <username>morimori</username>
    <digest>2E4E..fadjkf;asd...</digest> <!--  encoded password -->
    <resource>JIM-J/Palm</resource>
  </query>
</iq>
<presence/>
<message to="chikako@infosphere.org">
  <subject>Testing</subject>
  <body>This is a test message...</body>
</message>
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C. Infopipe Spec for the Image Converter Infopipe

Here is the XML representation of the Infopipe Spec for the Image Converter Infopipe

<?xml version="1.0"?>
<!DOCTYPE InfopipeSpec SYSTEM "InfopipeSpec.dtd">
<InfopipeSpec id="ImageConverter">
  <Method id="convert" match="image">
    <InoutArgs id="Inout">
       <Arg type="text" id="contentType">Content-Type/text()</Arg>
       <Arg type="text" id="contentTransferEncoding">Content-Transfer-Encoding/text()</Arg>
       <Arg type="text" id="contentBody">Content-Body/text()</Arg>
    </InoutArgs>
  </Method>
</InfopipeSpec>

D. The Generated Java Files from the Image Converter Infopipe Spec

D.1 ImageConverter.java

The following is the main part of ImageConverter.java.

import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class ImageConverter {

    /** inout arguments for convert() */
    public class Inout {
        public String contentType;
        public String contentTransferEncoding;
        public String contentBody;
    }

    /** method convert  */
    public void convert(Inout inout) throws ImageConverterException {
    }
}

D.2 ImageConverterException.java

The following is the main part of ImageConverterException.java.

public class ImageConverterException extends Exception {
    ImageConverterException(String msg) {
        super("ImageConverterException: " + msg);
    }
}

D.3 ImageConverterStub.java

The following is the part of ImageConverterStub.java.

document = parser.getDocument();
Node root = document.getDocumentElement();
Node node = null;
NodeList nl = null;
try {
    nl = XPathAPI.selectNodeList(root, "image");
    ImageConverter.Inout imageConverter_Inout = imageConverter.new Inout();
    for (int i = 0; i < nl.getLength(); i ++) {
        node = XPathAPI.selectSingleNode(nl.item(i), "Content-Type/text()");
        if (node != null) {
            if (node.getNodeType() == Node.TEXT_NODE) {
                imageConverter_Inout.contentType = node.getNodeValue();
            } else if (node.getNodeType() == Node.ATTRIBUTE_NODE) {
                imageConverter_Inout.contentType = ((Attr)node).getValue();
            } else {
                throw new ImageConverterException("this node type cannot be treated...");
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