public void startElement()

in openmeetings-service/src/main/java/org/apache/jackrabbit/webdav/xml/ResultHelper.java [292:364]
50 lines of code
16 McCabe index (conditional complexity)

        public void startElement(
                String eltUri, String eltLocalName, String eltQName, Attributes attrs)
                throws SAXException {
            // JCR-1767: Generate extra prefix mapping calls where needed
            addedPrefixMappings.add(null);
            checkPrefixMapping(eltUri, eltQName);
            for (int i = 0; i < attrs.getLength(); i++) {
                checkPrefixMapping(attrs.getURI(i), attrs.getQName(i));
            }

            // try to restore the qName. The map already contains the colon
            if (null != eltUri && eltUri.length() != 0 && this.uriToPrefixMap.containsKey(eltUri)) {
                eltQName = this.uriToPrefixMap.get(eltUri) + eltLocalName;
            }
            if (this.hasMappings) {
                // Add xmlns* attributes where needed

                // New Attributes if we have to add some.
                AttributesImpl newAttrs = null;

                int mappingCount = this.prefixList.size();
                int attrCount = attrs.getLength();

                for (int mapping = 0; mapping < mappingCount; mapping++) {

                    // Build infos for this namespace
                    String uri = (String) this.uriList.get(mapping);
                    String prefix = (String) this.prefixList.get(mapping);
                    String qName = prefix.equals("") ? "xmlns" : ("xmlns:" + prefix);

                    // Search for the corresponding xmlns* attribute
                    boolean found = false;
                    for (int attr = 0; attr < attrCount; attr++) {
                        if (qName.equals(attrs.getQName(attr))) {
                            // Check if mapping and attribute URI match
                            if (!uri.equals(attrs.getValue(attr))) {
                                throw new SAXException("URI in prefix mapping and attribute do not match");
                            }
                            found = true;
                            break;
                        }
                    }

                    if (!found) {
                        // Need to add this namespace
                        if (newAttrs == null) {
                            // Need to test if attrs is empty or we go into an infinite loop...
                            // Well know SAX bug which I spent 3 hours to remind of :-(
                            if (attrCount == 0) {
                                newAttrs = new AttributesImpl();
                            } else {
                                newAttrs = new AttributesImpl(attrs);
                            }
                        }

                        if (prefix.equals("")) {
                            newAttrs.addAttribute(XML, qName, qName, "CDATA", uri);
                        } else {
                            newAttrs.addAttribute(XML, prefix, qName, "CDATA", uri);
                        }
                    }
                } // end for mapping

                // Cleanup for the next element
                clearMappings();

                // Start element with new attributes, if any
                handler.startElement(eltUri, eltLocalName, eltQName, newAttrs == null ? attrs : newAttrs);                
            } else {
                // Normal job
                handler.startElement(eltUri, eltLocalName, eltQName, attrs);
            }
        }