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Implementation of the Day function from Pavel Krupets 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@576492 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Nick Burch 2007-09-17 15:58:54 +00:00
parent 7c257557fa
commit c4ca492849
1 changed files with 44 additions and 5 deletions
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49
src/scratchpad/src/org/apache/poi/hssf/record/formula/functions/Day.java
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@ -14,12 +14,51 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* Created on May 15, 2005
*
*/
package org.apache.poi.hssf.record.formula.functions;
public class Day extends NotImplementedFunction {
import org.apache.poi.hssf.usermodel.HSSFDateUtil;
import org.apache.poi.hssf.record.formula.eval.Eval;
import org.apache.poi.hssf.record.formula.eval.ValueEval;
import org.apache.poi.hssf.record.formula.eval.BlankEval;
import org.apache.poi.hssf.record.formula.eval.ErrorEval;
import org.apache.poi.hssf.record.formula.eval.NumberEval;
import org.apache.poi.hssf.record.formula.eval.NumericValueEval;
/**
* @author Pavel Krupets
*/
public class Day extends NumericFunction {
/**
* @see org.apache.poi.hssf.record.formula.functions.Function#evaluate(org.apache.poi.hssf.record.formula.eval.Eval[], int, short)
*/
public Eval evaluate(Eval[] operands, int srcCellRow, short
srcCellCol) {
ValueEval retval = null;
switch (operands.length) {
default:
retval = ErrorEval.VALUE_INVALID;
break;
case 1:
ValueEval ve = singleOperandEvaluate(operands[0],
srcCellRow, srcCellCol);
if (ve instanceof NumericValueEval) {
NumericValueEval ne = (NumericValueEval) ve;
if (HSSFDateUtil.isValidExcelDate(ne.getNumberValue())) {
java.util.Date d = HSSFDateUtil.getJavaDate(ne.getNumberValue());
java.util.Calendar c = java.util.Calendar.getInstance();
c.setTime(d);
retval = new NumberEval(c.get(java.util.Calendar.DAY_OF_MONTH));
} else {
retval = ErrorEval.NUM_ERROR;
}
} else if (ve instanceof BlankEval) {
// do nothing
} else {
retval = ErrorEval.NUM_ERROR;
}
}
return retval;
}
}