Re: InMethod Grid: resizing rowcount

2010-03-16 Thread Pointbreak 
On Mon, 15 Mar 2010 16:06 +0100, Thierry Peng p...@glue.ch wrote:
 Pointbreak schrieb:
  On Mon, 15 Mar 2010 15:06 +0100, Thierry Peng p...@glue.ch wrote:

  Pointbreak schrieb:
  
  The public interface of the inmethod DataGrid/DefaultDataGrid does not
  seem to provide functionality to expand the number of rows after an
  ajax-call that e.g. adds data to the underlying datasource. Is there a
  way to tell the DataGrid that the underlying datasource may have
  changed, to the effect that the existing row count is not valid anymore?
  I.e. like markAllItemsDirty(), but then telling the grid to reload the
  entire underlying model, including rowcount, instead of only the
  individual rows?
 
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  I tackled a similar problem (an add button for an editable datagrid) 
  the following way:
 
  - create a new object with reflection
  - insert it in the backing list (model)
  - call update on the grid
  - add the grid to the requesttarget
 
  public class MyDataGrid extends DecoratedDataGrid
  {
   protected List rawList;
 
   protected final Class modelAsClass;
 
  public MyDataGrid(String id, String title, String buttonTitle, List?
  list,
ListIGridColumn columns, final Class? modelAsClass)
{
  super(id, title, buttonTitle, new MyDataProviderAdapter(new 
  ListDataProvider(list)),
  columns, modelAsClass);
  log.debug(creating grid for type  + modelAsClass.getSimpleName()
  +  no of columns:  + columns.size() +  size of datalist:  + 
  list.size());
  this.rawList = list;
}
 
   @Override
   protected void onAddRow(AjaxRequestTarget target, Form? form)
{
  Object obj = modelAsClass.newInstance();
 
  rawList.add(obj);
  log.debug(object of class  + modelAsClass.getName() +  
  successfully inserted);
  update();
  target.addComponent(getGrid());
}
  }
 
  This takes place in a custom subclass of the defaultdatagrid. The 
  onAddRow method is called from an ajaxbutton (onsubmit)
  I hope this helps
 
  -- 
  Thierry Peng
  
 
  You must be doing something else in addition to that (or I am missing
  something). As far as I can see, the DefaultDataGrid class will not ask
  its model/datasource for a new rowcount when you call update(). Hence
  the call to update() will not result in the addition of a row to the
  grid, even though you added the row to your model. Are you sure you are
  not replacing the entire dataGrid in e.g. your getGrid() call?
 
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 nope, there is no magic in the getGrid() method. it only returns the 
 grid. If I read the update() method
 correctly I may even omit that call. So, the target.addComponent(grid) 
 is sufficient
 I'm using the inmethod-grid-1.4-rc7 with some extensions. wicket version 
 is 1.4.6

Ok thanks for your help. The problem is that inmethod 's call to
IDataSource.query() asks for the rows upto the last known total row
count. In your case that probably does not matter, since you just return
an iterator over the entire datasource, and update the rowcount
accordingly. I work with very large datasources, and unknown rowcounts.
I can workaround this issue by providing the page-size to my datasource,
so that I can fix the IQuery.getCount() asked by inmethod. Not a nice
solution, but will work for now.


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Re: InMethod Grid: resizing rowcount

2010-03-16 Thread Erik van Oosten 

I can confirm this. It took me a few days of debugging before I found out :(

Another solution is to just replace the inmethod grid with a freshly 
created instance after data changes. You can share the DataSource, and 
you may have to copy over the set of selected items.


Regards,
   Erik.


Pointbreak wrote:

...
Ok thanks for your help. The problem is that inmethod 's call to
IDataSource.query() asks for the rows upto the last known total row
count. In your case that probably does not matter, since you just return
an iterator over the entire datasource, and update the rowcount
accordingly. I work with very large datasources, and unknown rowcounts.
I can workaround this issue by providing the page-size to my datasource,
so that I can fix the IQuery.getCount() asked by inmethod. Not a nice
solution, but will work for now.
  


--
Sent from my SMTP compliant software
Erik van Oosten
http://day-to-day-stuff.blogspot.com/



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InMethod Grid: resizing rowcount

2010-03-15 Thread Pointbreak 
The public interface of the inmethod DataGrid/DefaultDataGrid does not
seem to provide functionality to expand the number of rows after an
ajax-call that e.g. adds data to the underlying datasource. Is there a
way to tell the DataGrid that the underlying datasource may have
changed, to the effect that the existing row count is not valid anymore?
I.e. like markAllItemsDirty(), but then telling the grid to reload the
entire underlying model, including rowcount, instead of only the
individual rows?

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Re: InMethod Grid: resizing rowcount

2010-03-15 Thread Thierry Peng 

Pointbreak schrieb:

The public interface of the inmethod DataGrid/DefaultDataGrid does not
seem to provide functionality to expand the number of rows after an
ajax-call that e.g. adds data to the underlying datasource. Is there a
way to tell the DataGrid that the underlying datasource may have
changed, to the effect that the existing row count is not valid anymore?
I.e. like markAllItemsDirty(), but then telling the grid to reload the
entire underlying model, including rowcount, instead of only the
individual rows?

-
To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
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I tackled a similar problem (an add button for an editable datagrid) 
the following way:


- create a new object with reflection
- insert it in the backing list (model)
- call update on the grid
- add the grid to the requesttarget

public class MyDataGrid extends DecoratedDataGrid
{
protected List rawList;

protected final Class modelAsClass;

public MyDataGrid(String id, String title, String buttonTitle, List? list,
 ListIGridColumn columns, final Class? modelAsClass)
 {
   super(id, title, buttonTitle, new MyDataProviderAdapter(new 
ListDataProvider(list)),

   columns, modelAsClass);
   log.debug(creating grid for type  + modelAsClass.getSimpleName()
   +  no of columns:  + columns.size() +  size of datalist:  + 
list.size());

   this.rawList = list;
 }

@Override
protected void onAddRow(AjaxRequestTarget target, Form? form)
 {
   Object obj = modelAsClass.newInstance();

   rawList.add(obj);
   log.debug(object of class  + modelAsClass.getName() +  
successfully inserted);

   update();
   target.addComponent(getGrid());
 }
}

This takes place in a custom subclass of the defaultdatagrid. The 
onAddRow method is called from an ajaxbutton (onsubmit)

I hope this helps

--
Thierry Peng
  __  _
 / / /   / / / / /   GLUE Software Engineering AG
/ / __/ /   / / / / __/ Zieglerstr. 34, 3007 Bern,  Switzerland
/ /_/ / /___/ /_/ / /___Phone: +41-(0)31/385 30 34Fax: 30 18
\/_/\/_/___mailto: p...@glue.ch


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Re: InMethod Grid: resizing rowcount

2010-03-15 Thread Pointbreak 
On Mon, 15 Mar 2010 15:06 +0100, Thierry Peng p...@glue.ch wrote:
 Pointbreak schrieb:
  The public interface of the inmethod DataGrid/DefaultDataGrid does not
  seem to provide functionality to expand the number of rows after an
  ajax-call that e.g. adds data to the underlying datasource. Is there a
  way to tell the DataGrid that the underlying datasource may have
  changed, to the effect that the existing row count is not valid anymore?
  I.e. like markAllItemsDirty(), but then telling the grid to reload the
  entire underlying model, including rowcount, instead of only the
  individual rows?
 
  -
  To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
  For additional commands, e-mail: users-h...@wicket.apache.org
 

 I tackled a similar problem (an add button for an editable datagrid) 
 the following way:
 
 - create a new object with reflection
 - insert it in the backing list (model)
 - call update on the grid
 - add the grid to the requesttarget
 
 public class MyDataGrid extends DecoratedDataGrid
 {
  protected List rawList;
 
  protected final Class modelAsClass;
 
 public MyDataGrid(String id, String title, String buttonTitle, List?
 list,
   ListIGridColumn columns, final Class? modelAsClass)
   {
 super(id, title, buttonTitle, new MyDataProviderAdapter(new 
 ListDataProvider(list)),
 columns, modelAsClass);
 log.debug(creating grid for type  + modelAsClass.getSimpleName()
 +  no of columns:  + columns.size() +  size of datalist:  + 
 list.size());
 this.rawList = list;
   }
 
  @Override
  protected void onAddRow(AjaxRequestTarget target, Form? form)
   {
 Object obj = modelAsClass.newInstance();
 
 rawList.add(obj);
 log.debug(object of class  + modelAsClass.getName() +  
 successfully inserted);
 update();
 target.addComponent(getGrid());
   }
 }
 
 This takes place in a custom subclass of the defaultdatagrid. The 
 onAddRow method is called from an ajaxbutton (onsubmit)
 I hope this helps
 
 -- 
 Thierry Peng

You must be doing something else in addition to that (or I am missing
something). As far as I can see, the DefaultDataGrid class will not ask
its model/datasource for a new rowcount when you call update(). Hence
the call to update() will not result in the addition of a row to the
grid, even though you added the row to your model. Are you sure you are
not replacing the entire dataGrid in e.g. your getGrid() call?

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Re: InMethod Grid: resizing rowcount

2010-03-15 Thread Thierry Peng 

Pointbreak schrieb:

On Mon, 15 Mar 2010 15:06 +0100, Thierry Peng p...@glue.ch wrote:
  

Pointbreak schrieb:


The public interface of the inmethod DataGrid/DefaultDataGrid does not
seem to provide functionality to expand the number of rows after an
ajax-call that e.g. adds data to the underlying datasource. Is there a
way to tell the DataGrid that the underlying datasource may have
changed, to the effect that the existing row count is not valid anymore?
I.e. like markAllItemsDirty(), but then telling the grid to reload the
entire underlying model, including rowcount, instead of only the
individual rows?

-
To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
For additional commands, e-mail: users-h...@wicket.apache.org

  
  
I tackled a similar problem (an add button for an editable datagrid) 
the following way:


- create a new object with reflection
- insert it in the backing list (model)
- call update on the grid
- add the grid to the requesttarget

public class MyDataGrid extends DecoratedDataGrid
{
 protected List rawList;

 protected final Class modelAsClass;

public MyDataGrid(String id, String title, String buttonTitle, List?
list,
  ListIGridColumn columns, final Class? modelAsClass)
  {
super(id, title, buttonTitle, new MyDataProviderAdapter(new 
ListDataProvider(list)),

columns, modelAsClass);
log.debug(creating grid for type  + modelAsClass.getSimpleName()
+  no of columns:  + columns.size() +  size of datalist:  + 
list.size());

this.rawList = list;
  }

 @Override
 protected void onAddRow(AjaxRequestTarget target, Form? form)
  {
Object obj = modelAsClass.newInstance();

rawList.add(obj);
log.debug(object of class  + modelAsClass.getName() +  
successfully inserted);

update();
target.addComponent(getGrid());
  }
}

This takes place in a custom subclass of the defaultdatagrid. The 
onAddRow method is called from an ajaxbutton (onsubmit)

I hope this helps

--
Thierry Peng



You must be doing something else in addition to that (or I am missing
something). As far as I can see, the DefaultDataGrid class will not ask
its model/datasource for a new rowcount when you call update(). Hence
the call to update() will not result in the addition of a row to the
grid, even though you added the row to your model. Are you sure you are
not replacing the entire dataGrid in e.g. your getGrid() call?

-
To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
For additional commands, e-mail: users-h...@wicket.apache.org

  
nope, there is no magic in the getGrid() method. it only returns the 
grid. If I read the update() method
correctly I may even omit that call. So, the target.addComponent(grid) 
is sufficient
I'm using the inmethod-grid-1.4-rc7 with some extensions. wicket version 
is 1.4.6


--
Thierry Peng
  __  _
 / / /   / / / / /   GLUE Software Engineering AG
/ / __/ /   / / / / __/ Zieglerstr. 34, 3007 Bern,  Switzerland
/ /_/ / /___/ /_/ / /___Phone: +41-(0)31/385 30 34Fax: 30 18
\/_/\/_/___mailto: p...@glue.ch


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