Github user jvwing commented on the issue:
https://github.com/apache/nifi/pull/929
@jdye64 I'm still confused by the disparity between the annotation docs and
the behavior of the processor, especially with respect to multiple sheets in
the incoming spreadsheet. From the annotations:
> Each sheet from the incoming Excel document will generate a new Flowfile
that will be output from this processor
This was not my experience, and I believe the single call to
`session.clone` on line 143, not performed in a loop, guarantees only a single
flowfile to the success relationship.
> @WritesAttribute(attribute="sheetname", description="The name of the
Excel sheet that this particular row of data came from in the Excel document")
But it has always been `UNKNOWN` for my tests.
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I created a unit test to help clarify how this is supposed to work. From
the docs, I believe the test below should pass, although it currently fails.
Am I misunderstanding?
Also see
[branch](https://github.com/jvwing/nifi/tree/NIFI-2613-poi-excel-3-tests)
[TwoSheets.xlsx](https://github.com/apache/nifi/files/778759/TwoSheets.xlsx)
@Test
public void testMultipleSheetsGeneratesMultipleFlowFiles() throws
Exception {
testRunner.enqueue(new
File("src/test/resources/TwoSheets.xlsx").toPath());
testRunner.run();
testRunner.assertTransferCount(ConvertExcelToCSVProcessor.SUCCESS,
2);
testRunner.assertTransferCount(ConvertExcelToCSVProcessor.ORIGINAL,
1);
testRunner.assertTransferCount(ConvertExcelToCSVProcessor.FAILURE,
0);
MockFlowFile ffSheetA =
testRunner.getFlowFilesForRelationship(ConvertExcelToCSVProcessor.SUCCESS).get(0);
Long rowsSheetA = new
Long(ffSheetA.getAttribute(ConvertExcelToCSVProcessor.ROW_NUM));
assertTrue(rowsSheetA == 4l);
assertTrue(ffSheetA.getAttribute(ConvertExcelToCSVProcessor.SHEET_NAME).equalsIgnoreCase("TestSheetA"));
MockFlowFile ffSheetB =
testRunner.getFlowFilesForRelationship(ConvertExcelToCSVProcessor.SUCCESS).get(1);
Long rowsSheetB = new
Long(ffSheetB.getAttribute(ConvertExcelToCSVProcessor.ROW_NUM));
assertTrue(rowsSheetB == 3l);
assertTrue(ffSheetB.getAttribute(ConvertExcelToCSVProcessor.SHEET_NAME).equalsIgnoreCase("TestSheetB"));
}
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