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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.ss.formula.udf;
-
- import java.util.HashMap;
- import java.util.Map;
-
- import org.apache.poi.ss.formula.functions.FreeRefFunction;
-
- /**
- * Default UDF finder - for adding your own user defined functions.
- *
- * @author PUdalau
- */
- public final class DefaultUDFFinder implements UDFFinder {
- private final Map<String, FreeRefFunction> _functionsByName;
-
- public DefaultUDFFinder(String[] functionNames, FreeRefFunction[] functionImpls) {
- int nFuncs = functionNames.length;
- if (functionImpls.length != nFuncs) {
- throw new IllegalArgumentException(
- "Mismatch in number of function names and implementations");
- }
- HashMap<String, FreeRefFunction> m = new HashMap<String, FreeRefFunction>(nFuncs * 3 / 2);
- for (int i = 0; i < functionImpls.length; i++) {
- m.put(functionNames[i].toUpperCase(), functionImpls[i]);
- }
- _functionsByName = m;
- }
-
- public FreeRefFunction findFunction(String name) {
- return _functionsByName.get(name.toUpperCase());
- }
- }
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