GerardDellemann commented on a change in pull request #234: MM-82 Detect Column
Types
URL: https://github.com/apache/metamodel/pull/234#discussion_r355971263
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File path: excel/src/main/java/org/apache/metamodel/excel/ExcelUtils.java
##########
@@ -232,53 +249,119 @@ public static String getCellValue(Workbook wb, Cell
cell) {
throw new IllegalStateException("Unknown cell type: " +
cell.getCellType());
}
- logger.debug("cell {} resolved to value: {}", cellCoordinate, result);
+ logger.debug("cell ({},{}) resolved to value: {}", cell.getRowIndex(),
cell.getColumnIndex(), result);
return result;
}
- private static String getFormulaCellValue(Workbook wb, Cell cell) {
+ private static Object getErrorResult(final Cell cell) {
+ String errorResult;
+ try {
+ errorResult =
FormulaError.forInt(cell.getErrorCellValue()).getString();
+ } catch (final RuntimeException e) {
+ logger
+ .debug("Getting error code for ({},{}) failed!: {}",
cell.getRowIndex(), cell.getColumnIndex(), e
+ .getMessage());
+ if (cell instanceof XSSFCell) {
+ // hack to get error string, which is available
+ errorResult = ((XSSFCell) cell).getErrorCellString();
+ } else {
+ logger
+ .error("Couldn't handle unexpected error scenario in
cell: ({},{})", cell.getRowIndex(), cell
+ .getColumnIndex());
+ throw e;
+ }
+ }
+ return errorResult;
+ }
+
+ private static Object getCellValueChecked(final Workbook workbook, final
Cell cell,
+ final ColumnType expectedColumnType) {
+ final Object value = getCellValueAsObject(workbook, cell);
+ if (value == null ||
value.getClass().equals(expectedColumnType.getJavaEquivalentClass())) {
+ return value;
+ }
+
+ // Don't log when an Integer value is in a Double column type
+ if (!(value.getClass().equals(Integer.class) && expectedColumnType
+ .getJavaEquivalentClass()
+ .equals(Double.class)) && logger.isWarnEnabled()) {
+ logger
+ .warn("Cell ({},{}) has the value '{}' of data type '{}',
which doesn't match the detected "
+ + "column's data type '{}'. This cell gets value
NULL in the DataSet.", cell.getRowIndex(),
+ cell.getColumnIndex(), value,
value.getClass().getSimpleName(), expectedColumnType);
+ }
+ return null;
+ }
+
+ private static String getFormulaCellValue(Workbook workbook, Cell cell) {
// first try with a cached/precalculated value
try {
double numericCellValue = cell.getNumericCellValue();
- // TODO: Consider not formatting it, but simple using
- // Double.toString(...)
- return _numberFormat.format(numericCellValue);
+ return getNumericCellValueAsString(cell.getCellStyle(),
numericCellValue);
} catch (Exception e) {
if (logger.isInfoEnabled()) {
logger.info("Failed to fetch cached/precalculated formula
value of cell: " + cell, e);
}
}
// evaluate cell first, if possible
+ final Cell evaluatedCell = getEvaluatedCell(workbook, cell);
+ if (evaluatedCell != null) {
+ return getCellValue(workbook, evaluatedCell);
+ } else {
+ // last resort: return the string formula
+ return cell.getCellFormula();
+ }
+ }
+
+ private static Object getFormulaCellValueAsObject(final Workbook workbook,
final Cell cell) {
+ // first try with a cached/precalculated value
+ try {
+ return getDoubleAsNumber(cell.getNumericCellValue());
+ } catch (final Exception e) {
+ if (logger.isInfoEnabled()) {
+ logger.info("Failed to fetch cached/precalculated formula
value of cell: " + cell, e);
+ }
+ }
+
+ // evaluate cell first, if possible
+ final Cell evaluatedCell = getEvaluatedCell(workbook, cell);
+ if (evaluatedCell != null) {
+ return getCellValueAsObject(workbook, evaluatedCell);
+ } else {
+ // last resort: return the string formula
+ return cell.getCellFormula();
+ }
+ }
+
+ private static Cell getEvaluatedCell(final Workbook workbook, final Cell
cell) {
Review comment:
sure
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