https://bz.apache.org/bugzilla/show_bug.cgi?id=65366
Bug ID: 65366
Summary: NullPointerException in XDDFDataSourcesFactory
Product: POI
Version: 5.0.0-FINAL
Hardware: PC
Status: NEW
Severity: normal
Priority: P2
Component: XDDF
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 37894
--> https://bz.apache.org/bugzilla/attachment.cgi?id=37894&action=edit
File containing the model chart
categoryDS.getNumRef() and valuesDS.getNumRef() are null in the case of an
existing .xlsx file containing a copied chart for which the links were removed
by the user.
Result: when reading this file, copying the model chart in order to use it in
another file, we have a NullPointerException in XDDFDataSourcesFactory when
calling xssfChart.getChartSeries()
CTChartSpace chartSpace =
ChartSpaceDocument.Factory.parse(modelChart.getPackagePart().getInputStream(),
POIXMLTypeLoader.DEFAULT_XML_OPTIONS).getChartSpace();
CTChart ctc = chartSpace.getChart();
final CreationHelper helper = wb.getCreationHelper();
final XSSFClientAnchor anchor = (XSSFClientAnchor)
helper.createClientAnchor();
anchor.setAnchorType(AnchorType.MOVE_AND_RESIZE);
anchor.setCol1(x);
anchor.setCol2(x + w - 1);
anchor.setRow1(y);
anchor.setRow2(y + h - 1);
xssfChart = drawing.createChart(anchor);
xssfChart.getCTChart().set(ctc);
existingSeries = xssfChart.getChartSeries();
java.lang.NullPointerException
at
org.apache.poi.xddf.usermodel.chart.XDDFDataSourcesFactory$1.<init>(XDDFDataSourcesFactory.java:28)
at
org.apache.poi.xddf.usermodel.chart.XDDFDataSourcesFactory.fromDataSource(XDDFDataSourcesFactory.java:27)
at
org.apache.poi.xddf.usermodel.chart.XDDFScatterChartData$Series.<init>(XDDFScatterChartData.java:125)
at
org.apache.poi.xddf.usermodel.chart.XDDFScatterChartData.<init>(XDDFScatterChartData.java:46)
at
org.apache.poi.xddf.usermodel.chart.XDDFChart.getChartSeries(XDDFChart.java:488)
The solution was easy on my part: I copied XDDFDataSourcesFactory.java and
modified it, checking if getNumRef() returns null everywhere and handling the
resulting null category and values CTNumData
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