[meghiddo]

hmm, I really have no idea how to do something like that unfortunately.
So you would say that is my only option though?

[nbelaevski]

Just create new class that will store your data and put your map there.

[meghiddo]

SO I would make a new class that uses the deviceID as the key, and then populates the List of channels in that fashion.

But then how would I bind that to the rich:tree correctly? I wish I could get a grasp on what your telling me here, I have till friday or all these months of project will be scrapped.

The way I see it, I would keep the class that has project name and the list of devioces, and then just use the rich:tree like this to display that:

<rich:tree>
 <rich:treeNodesAdaptor nodes="#{nodesBean.projects}" var="project">
 <rich:treeNode>
 <h:outputText value="#{project.projectName}" />
 </rich:treeNode>
 <rich:recursiveTreeNodesAdaptor roots="#{project.devicesList}" var="device">
 <rich:treeNode>
 <h:outputText value="#{device}" />
 </rich:treeNode>

 </rich:recursiveTreeNodesAdaptor>
 </rich:recursiveTreeNodesAdaptor>
 </rich:treeNodesAdaptor>
 </rich:tree>

I mean that is simple enough and that does work as it is right now. But then when I make a class to hold the channels, how will I be able to tell the tree which device to put the lst of channels underneath? It seems if I did something like:

<rich:tree>
 <rich:treeNodesAdaptor nodes="#{nodesBean.projects}" var="project">
 <rich:treeNode>
 <h:outputText value="#{project.projectName}" />
 </rich:treeNode>
 <rich:recursiveTreeNodesAdaptor roots="#{project.devicesList}" var="device">
 <rich:treeNode>
 <h:outputText value="#{device}" />
 </rich:treeNode>
 <rich:recursiveTreeNodesAdaptor roots="#{channelBean.channelsList}" var="channel">
 <rich:treeNode>
 <h:outputText value="#{channel}" />
 </rich:treeNode>
 </rich:recursiveTreeNodesAdaptor>
 </rich:recursiveTreeNodesAdaptor>
 </rich:treeNodesAdaptor>
 </rich:tree>

It would just display the full List of channles under each and every device, showing no actual owenership.

Please tell me what I can do here, I got screwed over with two lazy team mates and I have had to do all of this myself for 4 months now and I cannnot take losing all the work I have put into this

[nbelaevski]

From what I see, device has to contain list of channels, not some channelBean. Or channelBean should have method to filter channel by some device - then you'll use this method. As method expressions cannot accept parameters in JSF (if you are not using Seam), then you can use application.evaluateExpressionGet("#{device}", ...) to get the current device.

[meghiddo]

application.evaluateExpressionGet
will be used in my java code correct? I need a little more elaboration if possible, I am researching it now, but my time to finish this is very short

[meghiddo]

so far this is all I have lol :(

public void Application(){
 Application application = null;
 FacesContext context = null;
 String expression = null;
 Class expectedType = null;
 application.evaluateExpressionGet(context, expression, expectedType);

 }

[nbelaevski]

http://72.5.124.55/javaee/5/docs/api/javax/faces/application/Application.html

[meghiddo]

yeah I have been looking at that already, thats how I was able to even get this:

Application application;

 public ProjectHolder evaluateExpressionGet(FacesContext context, String expression, ProjectHolder expectedType){
 application.getExpressionFactory();
 ExpressionFactory.createValueExpression(#{device}, expectedType);

 application.evaluateExpressionGet(context, expression, expectedType);
 return null;

 }

But honestly I have no idea how to use this, Ive never been able to figure out how to use this stuff just using the java docs.

I don't know what class to put this in, I dont know what arguments to pass and how (it says FacesContext but I know absoluely nothing about FacesContext), I dont know what type of class to make this method (right now I have it set to ProjectHolder which is the class that holds the projectName and device variables)

But I am not going to be able to figure it out just using the javadoc, I guarantee that.

If only I had more time or my friggin team members were wortha crap and could have done some of the stuff I have been wasting my time on.

Now when it comes to tackling problems like this that will take research I dont have the freakin time. Man this sucks, I have till friday and this is just one of my many damn problems.


SOmeone else suggested using TreeNode and HtmlRecursiveTreeNode data types instead of using an Object bound to a list like I have been doing, do you think this might be easier? I looked at it and I couldnt get much out of it either.

Theres just not enough damn time man

[meghiddo]

I mean there has to be some kind of treenode data structures that I can use here.
First I would create soem tree data type. Then populate some nodes with all the projects. Then populate nodes under the projects with some device nodes that belong to each project, then I populate a third set of nodes with channels that belong to each device.

God if only i were only dealing with projects and devices this would be simple but these channels are killing me

[nbelaevski]

Ok, you can make your devices return channels-per-device instead. Then no evaluateExpressionGet() is necessary.

[meghiddo]

Thats what I dont know how to do though. Make the devices only list the channels that belong to them instead of every channel the code finds, which is what happens if I just make a generic deviceList and a generic channelList.

The generic deviceList is fine because that deviceList will only belong to one project, but the channelsList won't work because I will fill the channesList with values for a device, and then once the next device is found, the channelsList gets cleared and the channels for the davice are added. So I end up with a channelsList that only has channels loaded for the last device it found them for.

[meghiddo]

If it helps, and if you want to take the long time it will probably take to go over it, here is the code I am using to create the Objects I bind to my tree:

@PostConstruct
 public void loadValues(){
 //class instances that use SimpleXml to read and write Objects
 MeasurementProjectCollectionXMLAO accessProjectCollection = new MeasurementProjectCollectionXMLAO();
 MeasurementProjectXMLAO accessProject = new MeasurementProjectXMLAO();
 DeviceXMLAO accessDevice = new DeviceXMLAO();
 ChannelXMLAO accessChannel = new ChannelXMLAO();

 //class instances that use HttpClient to get xml from web service, which is passed to methods above
 HttpClientMethods httpMethod = new HttpClientMethods();
 ProjectHttpClient method = new ProjectHttpClient();
 ChannelHttpClient channelHttpMethod = new ChannelHttpClient();

 //instances of various Objects that will be set to xml from the web service thorugh above methods
 MeasurementProjectCollection measurementProjectCollection = null;
 MeasurementProject measurementProject = null;
 Device device = null;
 Channel channel = null;

 //sets measurementProjectCollection to the xml received from web service
 try {
 measurementProjectCollection = accessProjectCollection.readXML(method.Response(null));
 } catch (Exception e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }

 //start outer for loop, for every project found in the project COllection do this:
 for (MeasurementProject project : measurementProjectCollection.getMeasurementProjects()){
 //create an instance of ProjectHolder for each run through the for loop
 ProjectHolder projectHolder = new ProjectHolder();
 //sets projectName for use when needed
 projectHolder.setProjectId(project.getProjectId());
 //sets projectName variable for ProjectHolder class
 projectHolder.setProjectName(project.getName());
 //sets url value to be passed to ProjectHttpClient GetMethod in order to get devices for that project
 projectUrl = project.getProjectId();
 //check the values being set to projectName variable
 System.out.println("Value of ProjectName "+projectHolder.getProjectName());

 //starts process of populating devicesList and channelsListwith values
 if(project.getDevices() != null){
 //clear previous values from the devicesList
 projectHolder.devicesList.clear();
 //clear previous values from the channelsList
 projectHolder.channelsList.clear();

 //sets project to the xml received from web service
 try {
 measurementProject = accessProject.readXML(method.GetMethod(projectUrl));
 } catch (Exception e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }

 //start 1st nested for loop, for every device found in a project do this:
 for (ProjectDevice projectDevice : measurementProject.getDevices()){
 //sets deviceUrl to devices/deviceId to pass to GetMethod
 deviceUrl=projectDevice.getDeviceId();

 //sets device to the xml received from the web service using devices/devicesUrl
 try {
 device = accessDevice.readXML(httpMethod.GetDevice(deviceUrl));
 } catch (Exception e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }

 //add the deviceName to the deviceList for ProjectHolder class
 projectHolder.devicesList.add(device.getName());
 //check the values being sent to devicesList List
 System.out.println("Value of devicesList "+projectHolder.getDevicesList().toString());
 } //end of 1st nested for loop







 } //end process of populating devicesList and channelsList with values

 //adds each version of the ProjectHolder Object to the projectHolder List
 projects.add(projectHolder);

 } //end of outer for loop
 } //end of loadValues class

[meghiddo]

well 5am here, guess I better sleep, I will have 3 more late late nights to do this same thing anyway