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- /*
- * ====================================================================
- * 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.examples.ss.formula;
-
- import java.io.FileOutputStream;
- import java.io.IOException;
- import java.util.HashMap;
- import java.util.Locale;
- import java.util.Map;
-
- import org.apache.poi.ss.formula.OperationEvaluationContext;
- import org.apache.poi.ss.formula.eval.ErrorEval;
- import org.apache.poi.ss.formula.eval.ValueEval;
- import org.apache.poi.ss.formula.functions.FreeRefFunction;
- import org.apache.poi.ss.formula.udf.UDFFinder;
- import org.apache.poi.ss.usermodel.Row;
- import org.apache.poi.ss.usermodel.Sheet;
- import org.apache.poi.ss.usermodel.Workbook;
- import org.apache.poi.xssf.usermodel.XSSFWorkbook;
-
- /**
- * Demonstrates how to use functions provided by third-party add-ins, e.g. Bloomberg Excel Add-in.
- *
- * There can be situations when you are not interested in formula evaluation,
- * you just need to set the formula and the workbook will be evaluation by the client.
- */
- public class SettingExternalFunction {
-
- /**
- * wrap external functions in a plugin
- */
- public static class BloombergAddIn implements UDFFinder {
- private final Map<String, FreeRefFunction> _functionsByName;
-
- public BloombergAddIn() {
- // dummy function that returns NA
- // don't care about the implementation, we are not interested in evaluation
- // and this method will never be called
- FreeRefFunction NA = new FreeRefFunction() {
- @Override
- public ValueEval evaluate(ValueEval[] args, OperationEvaluationContext ec) {
- return ErrorEval.NA;
- }
- };
- _functionsByName = new HashMap<>();
- _functionsByName.put("BDP", NA);
- _functionsByName.put("BDH", NA);
- _functionsByName.put("BDS", NA);
- }
-
- @Override
- public FreeRefFunction findFunction(String name) {
- return _functionsByName.get(name.toUpperCase(Locale.ROOT));
- }
-
- }
-
- public static void main( String[] args ) throws IOException {
-
- try (Workbook wb = new XSSFWorkbook()) { // or new HSSFWorkbook()
-
- // register the add-in
- wb.addToolPack(new BloombergAddIn());
-
- Sheet sheet = wb.createSheet();
- Row row = sheet.createRow(0);
- row.createCell(0).setCellFormula("BDP(\"GOOG Equity\",\"CHG_PCT_YTD\")/100");
- row.createCell(1).setCellFormula("BDH(\"goog us equity\",\"EBIT\",\"1/1/2005\",\"12/31/2009\",\"per=cy\",\"curr=USD\") ");
- row.createCell(2).setCellFormula("BDS(\"goog us equity\",\"top_20_holders_public_filings\") ");
-
- try (FileOutputStream out = new FileOutputStream("bloomberg-demo.xlsx")) {
- wb.write(out);
- }
- }
- }
- }
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