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  1. #1
    Ext User fother's Avatar
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    Default NullPointer in BarDataProvider

    NullPointer in BarDataProvider


    change the content of the class for

    Code:
    public class AdvancedChartExample extends LayoutContainer {
    
    	public class Example extends BaseModel {
    
    		public Example(String month, Integer value) {
    			setMonth(month);
    			setValue(value);
    		}
    
    		public String getMonth() {
    			return get("month");
    		}
    
    		public Integer getValue() {
    			return get("value");
    		}
    
    		public void setMonth(String month) {
    			set("month", month);
    		}
    
    		public void setValue(Integer value) {
    			set("value", value);
    		}
    
    	}
    
    	@Override
    	protected void onRender(Element parent, int index) {
    		super.onRender(parent, index);
    
    		List<Example> examples = new ArrayList<Example>();
    		examples.add(new Example("Jan", 6));
    		examples.add(new Example("Fev", null));
    
    		final ListStore<Example> store = new ListStore<Example>();
    		store.add(examples);
    
    		// chart
    		String url = !Examples.isExplorer() ? "../../" : "";
    		url += "gxt/chart/open-flash-chart.swf";
    		final Chart chart = new Chart(url);
    
    		ChartModel model = new ChartModel("Title");
    		model.setBackgroundColour("#fefefe");
    		model.setLegend(new Legend(Position.TOP, true));
    		model.setScaleProvider(ScaleProvider.ROUNDED_NEAREST_SCALE_PROVIDER);
    
    		BarChart bar = new BarChart(BarStyle.GLASS);
    		bar.setColour("#00aa00");
    		BarDataProvider barProvider = new BarDataProvider("value", "month");
    		barProvider.bind(store);
    		bar.setDataProvider(barProvider);
    		model.addChartConfig(bar);
    
    		chart.setChartModel(model);
    
    		LayoutContainer lc = new LayoutContainer();
    		RowLayout rl = new RowLayout();
    		lc.setLayout(rl);
    		lc.setSize(800, 600);
    
    		RowData data;
    		data = new RowData(1, 300, new Margins(10));
    		ContentPanel cp = new ContentPanel(new FitLayout());
    		cp.setHeading("Chart");
    		cp.add(chart);
    		cp.setCollapsible(true);
    		lc.add(cp, data);
    
    		add(lc);
    
    	}
    }
    stacktrace
    HTML Code:
    java.lang.NullPointerException: null
    	at com.extjs.gxt.charts.client.model.BarDataProvider.populateData(BarDataProvider.java:52)
    	at com.extjs.gxt.charts.client.Chart.processModel(Chart.java:234)
    	at com.extjs.gxt.charts.client.Chart.setChartModel(Chart.java:168)

  2. #2
    Ext User fother's Avatar
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    Default


    according to sven this "issue" its fixed in SVN...