--- /dev/null
+/* ====================================================================
+ 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.
+==================================================================== */
+
+package org.apache.poi.hssf.record.formula.functions;
+
+import org.apache.poi.hssf.record.formula.eval.AreaEval;
+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.RefEval;
+import org.apache.poi.hssf.record.formula.eval.ValueEval;
+import org.apache.poi.hssf.record.formula.functions.CountUtils.I_MatchPredicate;
+
+/**
+ * Implementation for the function COUNTBLANK
+ * <p>
+ * Syntax: COUNTBLANK ( range )
+ * <table border="0" cellpadding="1" cellspacing="0" summary="Parameter descriptions">
+ * <tr><th>range </th><td>is the range of cells to count blanks</td></tr>
+ * </table>
+ * </p>
+ *
+ * @author Mads Mohr Christensen
+ */
+public final class Countblank implements Function {
+
+ public ValueEval evaluate(ValueEval[] args, int srcRowIndex, short srcColumnIndex) {
+ if (args.length != 1) {
+ // TODO - it doesn't seem to be possible to enter COUNTBLANK() into Excel with the wrong arg count
+ // perhaps this should be an exception
+ return ErrorEval.VALUE_INVALID;
+ }
+
+ double result;
+ ValueEval arg0 = args[0];
+ if (arg0 instanceof RefEval) {
+ result = CountUtils.countMatchingCell((RefEval) arg0, predicate);
+ } else if (arg0 instanceof AreaEval) {
+ result = CountUtils.countMatchingCellsInArea((AreaEval) arg0, predicate);
+ } else {
+ throw new IllegalArgumentException("Bad range arg type (" + arg0.getClass().getName() + ")");
+ }
+ return new NumberEval(result);
+ }
+
+ private static final I_MatchPredicate predicate = new I_MatchPredicate() {
+
+ public boolean matches(ValueEval valueEval) {
+ // Note - only BlankEval counts
+ return valueEval == BlankEval.INSTANCE;
+ }
+ };
+}
private static final String NULL = null;
+ public void testCountBlank() {
+
+ AreaEval range;
+ ValueEval[] values;
+
+ values = new ValueEval[] {
+ new NumberEval(0),
+ new StringEval(""), // note - does not match blank
+ BoolEval.TRUE,
+ BoolEval.FALSE,
+ ErrorEval.DIV_ZERO,
+ BlankEval.INSTANCE,
+ };
+ range = EvalFactory.createAreaEval("A1:B3", values);
+ confirmCountBlank(1, range);
+
+ values = new ValueEval[] {
+ new NumberEval(0),
+ new StringEval(""), // note - does not match blank
+ BlankEval.INSTANCE,
+ BoolEval.FALSE,
+ BoolEval.TRUE,
+ BlankEval.INSTANCE,
+ };
+ range = EvalFactory.createAreaEval("A1:B3", values);
+ confirmCountBlank(2, range);
+ }
+
public void testCountA() {
ValueEval[] args;
double result = NumericFunctionInvoker.invoke(new Countif(), args);
assertEquals(expected, result, 0);
}
+ private static void confirmCountBlank(int expected, AreaEval range) {
+
+ ValueEval[] args = { range };
+ double result = NumericFunctionInvoker.invoke(new Countblank(), args);
+ assertEquals(expected, result, 0);
+ }
private static I_MatchPredicate createCriteriaPredicate(ValueEval ev) {
return Countif.createCriteriaPredicate(ev, 0, 0);
}
public void testCountifFromSpreadsheet() {
- final String FILE_NAME = "countifExamples.xls";
- final int START_ROW_IX = 1;
- final int COL_IX_ACTUAL = 2;
- final int COL_IX_EXPECTED = 3;
+ testCountFunctionFromSpreadsheet("countifExamples.xls", 1, 2, 3, "countif");
+ }
+
+ public void testCountBlankFromSpreadsheet() {
+ testCountFunctionFromSpreadsheet("countblankExamples.xls", 1, 3, 4, "countblank");
+ }
+
+ private static void testCountFunctionFromSpreadsheet(String FILE_NAME, int START_ROW_IX, int COL_IX_ACTUAL, int COL_IX_EXPECTED, String functionName) {
int failureCount = 0;
HSSFWorkbook wb = HSSFTestDataSamples.openSampleWorkbook(FILE_NAME);
}
if (failureCount > 0) {
- throw new AssertionFailedError(failureCount + " countif evaluations failed. See stderr for more details");
+ throw new AssertionFailedError(failureCount + " " + functionName
+ + " evaluations failed. See stderr for more details");
}
}
}