Consider the following XML file:
<project>
<props>
<prop name="currency" value="USD" />
<prop name="user-type" value="admin" />
</props>
<plans>
<plan name="-" showFirst="false" showSecond="false">
<props>
<prop name="moneyback" value="true" />
<prop name="capacity" value="5" />
</props>
<section id="setup"/>
<section id="hardware" defaultChoice="machines">
<parts level="1">
<part choice="machine_001" name="DAP010" />
<part choice="machine_002" name="DAP011" />
</parts>
</section>
<section id="software" />
<queues>
<queue type="q2" minPlan="CC_Q" />
</queues>
</plan>
<plan name="A" showFirst="true" showSecond="true">
<users>
<user planName="classic" cost="$20.00" />
<user planName="lite" cost="$10.00" />
</users>
</plan>
<plan name="B" showFirst="true" showSecond="false">
<props>
<prop name="moneyback" value="false" />
<prop name="capacity" value="2" />
</props>
<section id="setup"/>
<section id="software" />
<queues>
<queue type="q2" minPlan="CC_Q" />
</queues>
</plan>
</plans>
</project>
Using the "JDOM2",
public void actionPerformed(ActionEvent e) {
JFileChooser ServiceOfferFileChooser = new JFileChooser();
ServiceOfferFileChooser.setCurrentDirectory(new File(System.getProperty("user.home")));
ServiceOfferFileChooser.setAcceptAllFileFilterUsed(false);
FileNameExtensionFilter filter = new FileNameExtensionFilter("*.xml", "xml");
ServiceOfferFileChooser.addChoosableFileFilter(filter);
int resultChangeServiceOfferFileChooser = ServiceOfferFileChooser.showOpenDialog(null);
if (resultChangeServiceOfferFileChooser == JFileChooser.APPROVE_OPTION) {
File selectedServiceOfferFile = ServiceOfferFileChooser.getSelectedFile();
SAXBuilder soRead = new SAXBuilder();
Document ReadSO;
try {
ReadSO = soRead.build(new File(selectedServiceOfferFile.getPath()));
JTree loadedTree = new JTree();
loadedTree.setModel(new DefaultTreeModel(
new DefaultMutableTreeNode("Service Offer") {
private static final long serialVersionUID = 1L;
{
add(new DefaultMutableTreeNode("Service Offer Properties"));
List<Element> soPlans = ReadSO.getRootElement().getChild("plans").getChildren();
for(int i=0;i<soPlans.size();i++){
Element soPlan = soPlans.get(i);
DefaultMutableTreeNode node_soPlan = new DefaultMutableTreeNode("Plan: "+soPlan.getAttributeValue("name"));
add(node_soPlan);
List<Element> plansProps = soPlans.get(i).getChildren();
for (int ii=0;ii<=plansProps.size()-1;ii++){
Element plansProp = plansProps.get(ii);
node_soPlan.add(new DefaultMutableTreeNode(plansProp));
}
}
}
}
));
newTree.setVisible(false);
westNorthPanel.add(loadedTree);
This is how my JTree looks like
Regarding that I need each of the Children "props", "section", "queues", and "user" has their own label as I define, So I have to count each of these Child Element in their parent element Plan.
I created a loop which counts number of the Child "Plan" in its parent "Plans". How?
List<Element> soPlans = ReadSO.getRootElement().getChild("plans").getChildren();
for(int i=0;i<soPlans.size();i++){
Element soPlan = soPlans.get(i);
Please note that the "List<Element>" implies a "list" which is satisfied by ensemble of "children".
Now the issue and my question is that in the second loop I want that the codes visits all "Plans" and when it find a "props" creates JTree node with desired text.
The problem is that if I use the method [.getChild("props")] after the method ".getChildren()", compiler correctly complains that I need to change "List<Element>" into "Elemen"; and by doing so, the method ".size()" is not defined for the "PlansProps"
List<Element> plansProps = soPlans.get(i).getChildren();
for (int ii=0;ii<=plansProps.size()-1;ii++){
Element plansProp = plansProps.get(ii);
node_soPlan.add(new DefaultMutableTreeNode(plansProp));
}
How can I use a "for (int)" loop to count a certain "Element" and not a "List of Elements"
I found a way to achieve my goal through implementing another method [.getQualifiedName()] for the Element declared inside the second loop where we can use the method [.getSize()] for the loop counter:
SAXBuilder soRead = new SAXBuilder();
Document ReadSO;
try {
ReadSO = soRead.build(new File(selectedServiceOfferFile.getPath()));
JTree loadedTree = new JTree();
loadedTree.setModel(new DefaultTreeModel(
new DefaultMutableTreeNode("Service Offer") {
private static final long serialVersionUID = 1L;
{
add(new DefaultMutableTreeNode("Service Offer Properties"));
List<Element> soPlans = ReadSO.getRootElement().getChild("plans").getChildren();
for(int i=0;i<soPlans.size();i++){
Element soPlan = soPlans.get(i);
DefaultMutableTreeNode node_soPlan = new DefaultMutableTreeNode("Plan: "+soPlan.getAttributeValue("name"));
add(node_soPlan);
**List<Element> plansProps = soPlans.get(i).getChildren();**
for (int ii=0;ii<=plansProps.size()-1;ii++){
Element plansProp = plansProps.get(ii);
**if (plansProp.getQualifiedName()** == "props"){
node_soPlan.add(new DefaultMutableTreeNode("Plan Properties"));
}
else if (plansProp.getQualifiedName() == "section"){
//System.out.println(plansProp.getAttributeValue("id"));
node_soPlan.add(new DefaultMutableTreeNode("Section: "+plansProp.getAttributeValue("id")));
}
else if (plansProp.getQualifiedName() == "queues"){
node_soPlan.add(new DefaultMutableTreeNode("Queue Licences: "));
}
else if (plansProp.getQualifiedName() == "users"){
node_soPlan.add(new DefaultMutableTreeNode("Users: "));
}
else {
node_soPlan.add(new DefaultMutableTreeNode(plansProp));
}
System.out.println(plansProp.getAttributeValue("id"));
}
}
}
}
