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CSNode to read xml nodes

Bhargav Coca

I am on 7.x on linux, trying to read the DCR, what would be a easy way to do that. Is there any example OOTB? I was doing this snippet to see what all it spits out, it does spit out a whole lot of info about the file.

If i want the contents of the dcr i need to use CSXMLDocument, but i am using CSFile not CSSimpleFile. What difference its gonna make?

Snippet:

CSVPath v1 = new CSVPath(s1);
CSFile f1 = csclient.getFile(v1);
CSNode n1 = csclient.getRoot().lookupByVPaths(new CSVPath[]{ v1 })[0];
System.out.println("File S1 path :"+n1);

Any Directions on how to read my DCR in CSSDK?

Thank You

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Comments

Rick Poulin

Here's some code that I last used on 7.1/RHEL5.. This uses the w3c Document, but if I were to redo it today, I'd strongly consider using dom4j instead..

[PHP]
public Document parseFile(CSSimpleFile file) throws CSException, IOException, SAXException, ParserConfigurationException {
// Need to read this ourselves instead of just passing path.getInputStream to the parser, because
// it looks like the IWOV API introduces some spacing before the <?xml ?>, causing the parse to fail
StringBuffer xml = new StringBuffer();
BufferedReader in = new BufferedReader(new InputStreamReader(file.getInputStream(true)));
String line = null;
while ((line = in.readLine()) != null) {
xml.append(line).append("\n");
}
in.close();

// just to be sure, remove anything that might have been before the processing instruction
String xmlOut = xml.toString();
xmlOut = xmlOut.replaceFirst("^.*<","<");
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(false);
return dbf.newDocumentBuilder().parse(new InputSource(new StringReader(xml)));
}
[/PHP]

Bhargav Coca

Thank you, after you said that I did some coding on Dom4j and its very easy to do it that way.

Thank You

Bhargav Coca

Reading any xml file is pretty simple, but while reading the DCR because of the DTD declaration i am getting an exception when ever I try to read it, Is there any other way we can read the xml using dom4J.

Snippet
[html]
public static void main(String[] args) throws DocumentException {
SAXReader reader = new SAXReader();
Document document = reader.read("Test.xml");
Element root = document.getRootElement();

for ( Iterator i = root.elementIterator(); i.hasNext(); )
{
Element element = (Element) i.next();
System.out.println("Element Name:"+element.getQualifiedName() );
System.out.println("Element Value:"+element.getText());
System.out.println("Element String Value:"+element.getStringValue());
}
[/html]

And I want to pass an attribute name to get value of that node.

Thanks

Rick Poulin

What you're looking to do is skip DTD validation. My setNamespaceAware(false) on the w3c parser seemed to do that. In Dom4j, you might have to go parser implementation-specific and specify it like this:

[PHP]
SAXReader reader = new SAXReader();
reader.setEncoding("UTF-8");
// this this first
reader.setValidation(false);
// and this is your fallback
reader.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false );
Document document = reader.read("Test.xml");
// the following line is strongly recommended before using document
document.setXMLEncoding("UTF-8");
[/PHP]

(Lookup documentation for Xerces, which LiveSite has been always been using)

Last Month in Quarter.rptdesign

Bhargav Coca

this works fine, going furthur on this, i tried this snippet to get all the value and i am getting it, but is there a function under attribs object which wen passed with name or type or id gives me the value of that node.


List list = document.selectNodes("//*[name() = 'item']"); // or "//while"
        int numberOfNodes = list.size();
        System.out.println("Number of Nodes :"+ numberOfNodes);
        for (Iterator iter = list.iterator(); iter.hasNext(); ) {
            Element element = (Element) iter.next();
            System.out.println("Element String Value:"+element.getStringValue());
        }

Thanks

Rick Poulin

Not sure what you're asking for... are you looking for element.getAttribute("id") ?

Javadoc is here: http://dom4j.sourceforge.net/dom4j-1.6.1/apidocs/

Bhargav Coca

Yes, I was looking at API, I am trying to get the value of an element with attribute passed to it as mentioned by you.

Well there is no function called getAttributes on an element though. So say if you xml is like mentioned below

[html]

My Title

MyContent

[/html]

So if I do

element.getAttributes("Content").getValue();

should return me "MyContent", just trying to figure out a way to do this.

Thanks

Bhargav Coca

I got this correctly, just need to sue proper xpath expression.

I just did this line,

List list = document.selectNodes("//item[@name='Title']");

You can Iterate on the list to get all your nodes with that attribute.