Hei Ole,
thanx for the fix. I´ve done a bug report so i won`t forget to include it
stefan
Ole Rahn schrieb:
> Our users recently had a problem: When you use ColorTheming for
> attribute "A" values and then change the attribute type of attribute "A"
> (edit schema, e.g. double to string, ...) the whole layer disappears,
> because the ColorTheming is messed up (a bunch of exceptions is thrown,
> etc.)
>
> A quick solution would be to check if an attribute's type was changed
> and if so, if there is a ColorTheming for that attribute in the layer
> and if so, remove the ColorTheming.
>
> Code for that can be found in
> com.vividsolutions.jump.workbench.ui.plugin.ViewSchemaPlugIn#applyChanges(final
>
> Layer layer, final SchemaPanel panel) and could like this:
>
> private void applyChanges(final Layer layer, final SchemaPanel panel)
> throws Exception {
> if (!panel.isModified()) {
> //User just pressed the Apply button even though he made no
> edits.
> //Don't truncate the undo history; instead, exit. [Jon Aquino]
> return;
> }
>
> if (panel.validateInput() != null) {
> throw new Exception(panel.validateInput());
> }
>
> panel.getModel().removeBlankRows();
>
> FeatureSchema newSchema = new FeatureSchema();
>
> // START: added by Ole
> FeatureSchema oldSchema =
> layer.getFeatureCollectionWrapper().getFeatureSchema();
> String attributeName = null;
> // END: added by Ole
>
> for (int i = 0; i < panel.getModel().getRowCount(); i++) {
> // START: added/modyfied by Ole
> attributeName = panel.getModel().get(i).getName();
>
> newSchema.addAttribute(attributeName,
> panel.getModel().get(i).getType());
>
> if ( oldSchema.hasAttribute(attributeName) &&
>
> !newSchema.getAttributeType(attributeName).equals(oldSchema.getAttributeType(attributeName))
>
> ){
> if (ColorThemingStyle.get(layer) != null){
> layer.removeStyle(ColorThemingStyle.get(layer));
> layer.getBasicStyle().setEnabled(true);
> layer.fireAppearanceChanged();
> }
> }
> // END: added/modyfied by Ole
>
> }
>
> (...)
>
> If this code is used, there is still a ClassCastException thrown, but
> the layer stays visible and OJ stays functional.
>
>
> Best regards
> Ole
>
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Ole Rahn
> FH Osnabrück
> Forschungsschwerpunkt PIROL
>
> Raum SD-107
> Tel.: 0541 969 3617
> mail.: [EMAIL PROTECTED]
> web: www.projekt-pirol.de/pirol-datenmanagement.html
>
>
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