Adding elements at the same level of an XML document

[John Paul Hoey]

Hi all,

I was wondering if someone could help me with my query please.

I have an XML document very similar to the following (this is just a snippet):

<Vehicle> <LevelOneA> <CodeValue>12345</CodeValue> <Description>Car</Description> </LevelOneA> <LevelOneC> <CodeValue>67890</CodeValue> <Description>Van</Description> </LevelOneC> </Vehicle>

What i want to do is have my programme create a few lines of XML i.e <LevelOneB> between <LevelOneA> and <LevelOneC> so that the eventual XML looks like this:

<Vehicle> <LevelOneA> <CodeValue>12345</CodeValue> <Description>Car</Description> </LevelOneA> <LevelOneB> <CodeValue>99999</CodeValue> <Description>Bike</Description> </LevelOneB> <LevelOneC> <CodeValue>67890</CodeValue> <Description>Van</Description> </LevelOneC> </Vehicle>

The problem i have however is that the code i have written adds <LevelOneB> AFTER <LevelOneC> (which i suppose makes sense as im using the .appendChild() method).

This is what i get as the outcome:

<Vehicle> <LevelOneA> <CodeValue>12345</CodeValue> <Description>Car</Description> </LevelOneA> <LevelOneC> <CodeValue>67890</CodeValue> <Description>Van</Description> </LevelOneC> <LevelOneB> <CodeValue>99999</CodeValue> <Description>Bike</Description> </LevelOneB> </Vehicle>


Here is a snippet of the code that im currently using:

Document LevelB (Document doc, String P_EndValue, String P_EndText) {
            
             
                        //==================
                        // Add LevelOneB Node
                        //==================
                                          
                        XPathFactory factory_Name = XPathFactory.newInstance();
                        XPath xpath_Name = factory_Name.newXPath();
                        XPathExpression Vehicle_Name = xpath_Name.compile("//Transport/Vehicle");
                       
                        Object output_VehicleName  = Vehicle_Name.evaluate(doc, XPathConstants.NODESET);
                        NodeList nodes_Name = (NodeList) output_VehicleName ;
                        
                        Element Name = doc.createElement("LevelOneB");
                        Element Value = doc.createElement("CodeValue");
                        Element Text = doc.createElement("Description");
                           
                        nodes_Name.item(0).appendChild(Name);
                        Name.appendChild(Value);
                        Name.appendChild(Text);
                        
                        Value.setTextContent(P_EndValue); 
                        Text.setTextContent(P_EndText);                                         
                        
                        Document Doc1 = doc;
                        
                        return Doc1;
                        
                    }

Ive been at this all night and I cant seem to figure out how to do this therefore if anyone could help me with my problem that would be very much appreciated.

Regards

John

[John Jai]

Consider the insertBefore() method in the org.w3c.dom.Node class.

My step will be to find Node C (LevelOneC), and insert the Level B node just before it.

// Find node C
Node nodeC = doc1.getElementsByTagName("LevelOneC").item(0);

// Insert before node C
nodeC.getParentNode().insertBefore(nodeB, nodeC);

[John Paul Hoey]

Hi John,

Thanks for the reply and apologies it has taken me a few days to respond.

I implemented the advice you have given and it worked successfully.

I had actually tried to use the .insertBefore() but being a relatively novice at Java i wasnt sure how it would have worked ... and by looking at your supplied code i was actually missing the .getParentNode() part of it.

So once again thanks for your help which is very much appreciated

Regards

John Paul

[John Jai]

You 're welcome.