Question

Could someone please tell me why the Iterator in this code does not return with he Element Object?!? Can’t cast to Element Object! This is a JDOM implementation of SAX!

        org.xml.sax.InputSource inStream = new org.xml.sax.InputSource();

        inStream.setCharacterStream(new java.io.StringReader(temp));


        SAXBuilder builder = new SAXBuilder();

        Document doc = builder.build(inStream);   
        ArrayList<String> queries = new ArrayList<String>();
        Element root = doc.getRootElement();

        Iterator elemIter = root.getDescendants();

        while (elemIter.hasNext()) {

            **Element tempElem = (Element)elemIter.next();** 
            String CDATA = tempElem.getChildText("ZQuery");
            queries.add(CDATA);
            elemIter.next();
        }

Answer 1

You need to pass an ElementFilter to getDescentdents(Filter filter)

XML

<?xml version="1.0" encoding="UTF-8"?>
<root>
    <child1>
        <child11></child11>
        <child12></child12>
    </child1>
    <child2></child2>
</root>

Example

 SAXBuilder builder = new SAXBuilder();
 Document document = builder.build(new File("src/com/foo/test.xml"));
 Element root = document.getRootElement();
 ElementFilter filter = new ElementFilter();
 Iterator i = root.getDescendants(filter);
 while (i.hasNext()) {
     Element element = (Element) i.next();
     System.out.println(element);
 }

Output

[Element: <child1/>]
[Element: <child11/>]
[Element: <child12/>]
[Element: <child2/>]