protected  void createAnchorEvent(Attributes attributes) throws SAXException 
{
        AttributesImpl newAttributes = new AttributesImpl(attributes);
        newAttributes.removeAttribute("href");
        newAttributes.removeAttribute("external");
        String link = attributes.getValue("href");
        CopletInstanceData cid = this.getCopletInstanceData();
        link = this.getLink((String)cid.getTemporaryAttribute(this.attributeName), link);
        newAttributes.addCDATAAttribute("path", this.jxPath);
        newAttributes.addCDATAAttribute("value", link);
        newAttributes.addCDATAAttribute("coplet", cid.getId());
        newAttributes.addCDATAAttribute("format", "html-link");
        this.xmlConsumer.startPrefixMapping("coplet", CopletTransformer.NAMESPACE_URI);
        this.xmlConsumer.startElement(CopletTransformer.NAMESPACE_URI,
                                      CopletTransformer.LINK_ELEM,
                                      "coplet:" + CopletTransformer.LINK_ELEM,
                                      newAttributes);
}

 protected  void createFormEvent(Attributes attributes) throws SAXException 
{
        AttributesImpl newAttributes = new AttributesImpl(attributes);
        newAttributes.removeAttribute("action");
        String link = attributes.getValue("action");
        CopletInstanceData cid = this.getCopletInstanceData();
        link = this.getLink((String)cid.getTemporaryAttribute(this.attributeName), link);
        newAttributes.addCDATAAttribute("path", this.jxPath);
        newAttributes.addCDATAAttribute("value", link);
        newAttributes.addCDATAAttribute("coplet", cid.getId());
        newAttributes.addCDATAAttribute("format", "html-form");
        if ( newAttributes.getIndex("method") == -1 ) {
            newAttributes.addCDATAAttribute("method", "POST");
        }
        this.xmlConsumer.startPrefixMapping("coplet", CopletTransformer.NAMESPACE_URI);
        this.xmlConsumer.startElement(CopletTransformer.NAMESPACE_URI,
                CopletTransformer.LINK_ELEM,
                "coplet:" + CopletTransformer.LINK_ELEM,
                newAttributes);
}

 public  void endElement(String uri,
    String name,
    String raw) throws SAXException 
{
        boolean processed = false;
        if ( "a".equals(name) ) {
            final Boolean converted = (Boolean)this.stack.pop();
            if ( converted.booleanValue() ) {
                this.xmlConsumer.endElement(CopletTransformer.NAMESPACE_URI,
                                            CopletTransformer.LINK_ELEM,
                                            "coplet:" + CopletTransformer.LINK_ELEM);
                this.xmlConsumer.endPrefixMapping("coplet");
                processed = true;
            }
        } else if ( "form".equals(name) ) {
            final Boolean converted = (Boolean)this.stack.pop();
            if ( converted.booleanValue() ) {
                this.xmlConsumer.endElement(CopletTransformer.NAMESPACE_URI,
                        CopletTransformer.LINK_ELEM,
                        "coplet:" + CopletTransformer.LINK_ELEM);
                this.xmlConsumer.endPrefixMapping("coplet");
                processed = true;
            }
        }
        if ( !processed ) {
            super.endElement(uri, name, raw);
        }
}

 protected String getLink(String base,
    String link) 
{
        final String v = SourceUtil.absolutize(base, link);
        return v;
}

 protected boolean isRemoteAnchor(Attributes attributes) 
{
        String link = attributes.getValue("href");
        // no empty link to current document
        if (link != null && link.trim().length()  > 0) {
            // check reference to document fragment
            if (!link.trim().startsWith("#")) {
                return true;
            }
        }
        return false;
}

Determine if the element is an url and if the url points to some remote source.

 public  void setup(SourceResolver resolver,
    Map objectModel,
    String src,
    Parameters par) throws IOException, SAXException, ProcessingException 
{
        super.setup(resolver, objectModel, src, par);
        this.attributeName = par.getParameter("attribute-name", "application-uri");
        this.jxPath = "temporaryAttributes/" + this.attributeName;
}

 public  void startElement(String uri,
    String name,
    String raw,
    Attributes attr) throws SAXException 
{
        boolean processed = false;
        if ("a".equals(name) ) {
            final AttributesImpl a = this.getMutableAttributes(attr);
            attr = a;
            boolean convert = false;
            final boolean isRemoteAnchor = this.isRemoteAnchor(attr);
            if ( isRemoteAnchor ) {
                convert = !this.isExternalLink(a);
            }
            this.stack.push(convert ? Boolean.TRUE: Boolean.FALSE);
            if ( convert ) {
                this.createAnchorEvent(attr);
                processed = true;
            }
        } else if ("form".equals(name) ) {
            final AttributesImpl a = this.getMutableAttributes(attr);
            attr = a;
            boolean convert = !this.isExternalForm(a);
            this.stack.push(convert ? Boolean.TRUE: Boolean.FALSE);
            if ( convert ) {
                this.createFormEvent(attr);
                processed = true;
            }
        }
        if ( !processed ) {
            super.startElement(uri, name, raw, attr);
        }
}