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Re: [platform-swt-dev] getElement from database
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hi bryan, LabelProvider implements ITableProvider.
That error was a typing error, the best i can get is to populate my table
just with the last element from the select(i didn't understan how to let the
table viewer read for example a vector of array, or an bidimensional array).
Also, the row is written in every columns of my table.
something like
a a a
b b b
c c c
instead of a b c
a b c
a b c
Thanks,
gabriele
Bryan Hunt-2 wrote:
>
> Gabriele, this type of question is best asked in the newsgroups. I
> don't see any obvious problems with the code below other than your
> content provider returning a length instead of Object[], but I'm
> guessing that's a typo as that won't even compile. My guess is that
> the problem is with your label provider. Does your label provider
> implement ITableLabelProvider?
>
> Bryan
>
> On Jun 13, 2008, at 6:43 AM, gaghi wrote:
>
>>
>> hi guys, i'm writing a plugin for udig(based on eclipse). I have to
>> show a
>> table which rows are the result of a DB selection. I'm able to get
>> the rows
>> from the database, but I think I'm doing something wrong in getting
>> them
>> back to the table.
>> Following a skeleton of my code.
>> CollectionItem defines the type of data.
>> getElement is a Content Provider method.
>> I don't really know how move on.
>> I have problems with LabelProvider which doesn't allow me to show
>> the column
>> name because of a casting problem from CollectionItem, but i have a
>> method
>> like this: String[] colName= coll_It.getColumnName(); this method
>> returns a
>> string array. Trying instead to print a string array {from 1 to 10}
>> the
>> label are printed all in the first column filling 10 rows.
>> i hope you could help.
>>
>> public class CollectionItem {
>> private ArrayList<Object[]> items= new ArrayList<Object[]>();
>> private String collection;
>> Object dbRow[]=null;
>> public CollectionItem(String collection){
>> this.collection=collection;
>> extractData();
>> }
>>
>> public ArrayList<Object[]> getItem(){
>> return items;
>> }
>> public void extractData(){
>> String query = "SELECT I.* FROM Items as I Inner Join
>> CollectionItems AS
>> CI ON I.ItemID = CI.ItemID where CI.CollectionID like \""+collection
>> +"\"";
>> System.out.println(query);
>> try {
>> DbAction db= new DbAction("Collezione");
>> Statement s = db.openConnection();
>> ResultSet rs = s.executeQuery(query);
>> ResultSetMetaData rsmd = rs.getMetaData();
>> dbRow= new Object[rsmd.getColumnCount()];
>> columnName= new Object[rsmd.getColumnCount()];
>> boolean done=false;
>> while( rs.next() )
>> {
>> for(int i =1; i <= rsmd.getColumnCount(); i++){
>> dbRow[i-1]=rs.getString(i);
>>
>> }
>>
>> items.add(dbRow);//fill vector with array containing rows
>>
>> }
>>
>> db.closeConnection();
>> }
>> catch (SQLException e) {
>> // TODO Auto-generated catch block
>> e.printStackTrace();
>> }
>>
>> }
>>
>> Inside TableContentProvider:
>>
>> public Object[] getElements(Object inputElement) {
>>
>> CollectionItem ci = new CollectionItem(inputElement.toString());
>> return ci.getItem().toArray().length;
>>
>> }
>>
>> Thanks,
>> Gabriele
>> --
>> View this message in context:
>> http://www.nabble.com/getElement-from-database-tp17820811p17820811.html
>> Sent from the Eclipse Platform - swt mailing list archive at
>> Nabble.com.
>>
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>
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>
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