Hello,
Thanks for the response. I understand the restriction of using
XPath for updates now. However I am wondering if there is an
intermediate step that I can achieve table editing. Basically the method
of using a 'TableTemplate' is what I find most useful.
I am wondering if it would be possible for me through the use of
extending/customising the TableDefinition/Column definitions classes to
be able to handle editing in the tablemodel set up using the current
mechanism.
I mean could I get an XPath expression that indicates the current cell I
am in and use that expression to GET the Element/Node in the document
that this cell represents so that I can then modify it directly....
i.e. XMLTableModel.java
1) override isCellEditable to return true...
2) override setValueAt(Object aValue, int rowIndex, int columnIndex)
Now in this method
Object row = getRowValue(rowIndex);
Object cell = definition.getValueAt(row, columnIndex);
But how can I find out / map back to what this cell means in the
original document... ?
Thanks in advance,
-Alan
-----Original Message-----
From: James Strachan [mailto:[EMAIL PROTECTED]]
Sent: 22 February 2002 00:32
To: Alan O'Leary; [EMAIL PROTECTED]
Subject: Re: [dom4j-user] TableModel.
Hey Alan
Displaying the table using XPath expressions is pretty easy. Right now
though updating a document via an XPath expression is pretty hard stuff.
XPath is generally used to evaluate expressions on existing documents -
its
rarely used to actually update documents 'in place'.
Though I think it'd be cool to support a subset of XPath for update
purposes. Quite a few people seem to want this feature. e.g. you could
do
something like
update( document, "/foo/bar/@x", "Some value" );
For some xpath expressions this makes sense, though for others like
'count(/foo/bar)' don't make sense though. It'd take some hacking to get
the
Jaxen XPath engine to be able to support this but it would be kinda cool
if
we could do this.
James
----- Original Message -----
From: "Alan O'Leary" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, February 21, 2002 9:30 AM
Subject: [dom4j-user] TableModel.
> Hello,
> I am currently looking at the new TableModel approach that is in
> the latest release. I am trying to extend this TableDemo example to
make
> it editable etc...
>
> This is as a Swing/<dom4j> learning exercise...
>
> What I have set up is a Tree and Table and the Tree uses the tree
model
> and on node selection the 'branch' of the tree is used to display a
> table (using a table definition)
>
> All this works now BUT I when I edit a cell I cannot get back a node
> within the document...
>
> (Basically I am building a little XML editor as I thought that would
be
> a good way to learn this stuff quickly)
>
> What I am wondering is that I have access to a Row XPath and Column
> XPath expression ....
>
> Is this the key or is there a better way ?
>
> So I have overridden the :
>
> 'public void setValueAt(Object aValue, int rowIndex, int columnIndex)'
>
> but don't know how to modify / access the correct cell the document...
>
> Any help appreciated ...
>
> Basically I would like to use the TableDefinition approach rather than
> hard coding a table model...
>
> Regards
> Alan
>
>
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