Can anyone add the following implementation? I couldn't commit.
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version
2.0
* (the "License"); you may not use this file except in compliance
with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied.
* 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;
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 pkrupets
*/
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;
}
}
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