Re: A question about rebuild the tree after refresh the rdf datasource!

On Jun 26, 7:19=A0pm, Neil Deakin <[email protected]> wrote:
> BenKwan wrote:
> > why the tree doesn't rebuild itself in the second condition!
>
> Hard to tell without seeing what is being changed. If the new data
> doesn't relate to what's already in the tree, nothing will happen.
>
> Note that changing the datasource never rebuilds the template. It only
> updates the pieces that would need changing.

My RDF file is :
<?xml version=3D"1.0"?>
<RDF:RDF xmlns:NS1=3D"http://netDisck.desktopx.org/rdf#"
         xmlns:NC=3D"http://home.netscape.com/NC-rdf#"
         xmlns:RDF=3D"http://www.w3.org/1999/02/22-rdf-syntax-ns#">

  <RDF:Seq RDF:about=3D"http://netDisck.desktopx.org/rdf#LogicalRoot">
    <RDF:li RDF:resource=3D"http://netDisck.desktopx.org/rdf#ll"/>
    <RDF:li RDF:resource=3D"http://netDisck.desktopx.org/rdf#22"/>
    <RDF:li RDF:resource=3D"http://netDisck.desktopx.org/rdf#33"/>
    <RDF:li RDF:resource=3D"http://netDisck.desktopx.org/rdf#44"/>
    <RDF:li RDF:resource=3D"http://netDisck.desktopx.org/rdf#55"/>
  </RDF:Seq>
  <RDF:Description RDF:about=3D"http://netDisck.desktopx.org/
rdf#LogicalRoot"
                   NS1:path=3D"/alfresco/webdav/Users/126162/Files/"
                   NS1:id=3D"/alfresco/webdav/Users/126162/Files/"
                   NS1:name=3D"root"
                   NS1:parent=3D""/>
  <RDF:Description RDF:about=3D"http://netDisck.desktopx.org/rdf#ll"
                   NS1:path=3D"/alfresco/webdav/Users/126162/Files/ll/"
                   NS1:id=3D"/alfresco/webdav/Users/126162/Files/ll/"
                   NS1:name=3D"ll"
                   NS1:parent=3D"" />
  <RDF:Description RDF:about=3D"http://netDisck.desktopx.org/rdf#22"
                   NS1:path=3D"/alfresco/webdav/Users/126162/Files/ll/"
                   NS1:id=3D"/alfresco/webdav/Users/126162/Files/ll/"
                   NS1:name=3D"22"
                   NS1:parent=3D"" />
  <RDF:Description RDF:about=3D"http://netDisck.desktopx.org/rdf#33"
                   NS1:path=3D"/alfresco/webdav/Users/126162/Files/ll/"
                   NS1:id=3D"/alfresco/webdav/Users/126162/Files/ll/"
                   NS1:name=3D"33"
                   NS1:parent=3D"" />
  <RDF:Description RDF:about=3D"http://netDisck.desktopx.org/rdf#44"
                   NS1:path=3D"/alfresco/webdav/Users/126162/Files/ll/"
                   NS1:id=3D"/alfresco/webdav/Users/126162/Files/ll/"
                   NS1:name=3D"44"
                   NS1:parent=3D"" />
  <RDF:Description RDF:about=3D"http://netDisck.desktopx.org/rdf#55"
                   NS1:path=3D"/alfresco/webdav/Users/126162/Files/ll/"
                   NS1:id=3D"/alfresco/webdav/Users/126162/Files/ll/"
                   NS1:name=3D"55"
                   NS1:parent=3D"" />
</RDF:RDF>

my tree:
<tree id=3D"root-tree" flex=3D"1"  context=3D"clipmenu"
datasources=3D"netDisckSource.rdf"  ref=3D"http://netDisck.desktopx.org/
rdf#root" >

when i delete <RDF:li RDF:resource=3D"http://netDisck.desktopx.org/
rdf#55"/> and <RDF:Description RDF:about=3D"http://netDisck.desktopx.org/
rdf#55" from the rdf file.my refresh js code is :
function refresh()
{
var RDF =3D Components.classes["@mozilla.org/rdf/rdf-service;
1"].getService(Components.interfaces.nsIRDFService);
var ds =3D RDF.GetDataSource("chrome://treeroot/content/
netDisckSource.rdf");
ds.QueryInterface(Components.interfaces.nsIRDFRemoteDataSource);
ds.Refresh(false);
}

the tree displays all right.the node "55" is remove, and now i add
<RDF:li RDF:resource=3D"http://netDisck.desktopx.org/rdf#66"/> and
<RDF:Description RDF:about=3D"http://netDisck.desktopx.org/rdf#66" to
the rdf file and invoke refresh(),nothing is changed. But if add this
to the end of the refresh() function:
"var tree =3D document.getElementById("root-tree");
  tree.builder.rebuild();"
the tree display all right,too!

This is the situation i meet.