Question

Using one Jtable to change the model of another

Asked by: Drace


Hello all,

I'm having trouble getting my application to modify the Jtables appropriately.

I have :

1) Main Jframe window with a Jtable that lists web site URL's --> (WebSiteListTableModel)

2) Child Jdialog with Jtable listing all the available sites (with a checkbox to select the site(s) )  --> (PreferencesTableModel)


When I make modifications to the  PreferencesTableModel the values from WebSiteListTableModel get affected instantly.

I don't want this effect because I want them to "choose the URL's they want" then APPLY the changes when they press the APPLY jButton, not as soon as a site get's checked.


how can I setup the PreferencesTableModel to allow changes to be made separate from WebSiteListTableModel?  

// Lists all the web sites available 
public class PreferencesTableModel  extends AbstractTableModel {
	
	private static final String[] columnNames = { "",
							  "Web Site",
		                                          "User Name",
		                                          "Password",
		                                          "Other" };
        private  HashMap<DataSite,Integer> siteToIndexMap = new HashMap<DataSite,Integer>();
}  
// Lists only the site you chose from the PreferencesTableModel
public class SearchSitesTableModel extends AbstractTableModel {  
	private static final String[] columnNames = { "Successful",
							 "Web Site",
		                                          "Results",		                                          
		                                          "Seconds" };  
	private Map<DataSite,Integer> siteToIndexMap = new HashMap<DataSite,Integer>();
} 

public class DataSite { 
	private String siteName;
	private String baseURL;
	private String userId;
	private String userName;
	private String userPassword;
	private Boolean preffered; // True = should be shown in Main JTable (WebSiteTableModel)
}

                                  
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Asked On
2009-11-05 at 10:02:08ID24875362
Tags

Jtable

,

Model

,

AbstractTableModel

,

Swing

,

modify Jtable

Topics

Java Programming Language

,

Java AWT & Swing

Participating Experts
1
Points
250
Comments
8

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Answers

 

by: CEHJPosted on 2009-11-05 at 10:06:22ID: 25752157

Difficult to say exactly as you haven't given much code, but check that the same DataSite objects are not appearing in both models

 

by: DracePosted on 2009-11-05 at 10:16:51ID: 25752258


Yes the DataSite objects are in both models , so how would I be able to separate them?

Will adding STATIC to private Map<DataSite,Integer> siteToIndexMap = new HashMap<DataSite,Integer>(); in the PreferencesTableModel accomplish that?

 

by: CEHJPosted on 2009-11-05 at 11:59:51ID: 25753293

No - that'll make it worse ;-)

You need to make copies of them all and one model should have the copies

 

by: DracePosted on 2009-11-05 at 12:08:38ID: 25753388


OK so If I'll try make a Separate DataSiteList Object (which hold many Sites)

but is there a way I can assign the DataSiteList object from PreferencesTableModel to the DataSiteList in WebSiteTableModel?

DataSiteList is a Hashmap that hold many site objects (each site is basically a web site name, url, etc)

I was thinking along the lines of :

WebSiteTableModel model = (WebSiteTableModel) myPreferencesTableModel;

is that possible in any way so I can "Tell" the WebSiteTableModel the changes made from the PreferencesTableModel?

If you can give me an example of the code which would let me assign the underlying object(DataSite) from the Preferences to WebSiteList model.

Thanks again, I'm getting warmer!

 

by: CEHJPosted on 2009-11-05 at 12:25:30ID: 25753572

You could use a copy constructor:

public DataSite(DateSite other) {
   //
}

or depending on the nature of the class itself, it might be possible just to make it Cloneable. But beware! Even with a clone, you could end up with a shallow clone when you need a deep one. Look into shallow/deep copy or clone and check the references in each object's reference tree

 

by: DracePosted on 2009-11-12 at 10:11:14ID: 31650623


You were on the ball!! I made a Datasite(new Datasite) and I was able to make a new copy using the newly build constructor!

Thanks!

 

by: CEHJPosted on 2009-11-12 at 10:55:34ID: 25807563

:-)

 

by: DracePosted on 2009-11-12 at 11:02:37ID: 25807643


Did you really think I forgot you?

I just needed time to figure it out ^_^

20120131-EE-VQP-002

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