50 lines
1.9 KiB
Java
50 lines
1.9 KiB
Java
/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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package org.apache.poi.ss.formula.udf;
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import java.util.HashMap;
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import java.util.Map;
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import org.apache.poi.ss.formula.functions.FreeRefFunction;
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/**
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* Default UDF finder - for adding your own user defined functions.
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*
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* @author PUdalau
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*/
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public final class DefaultUDFFinder implements UDFFinder {
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private final Map<String, FreeRefFunction> _functionsByName;
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public DefaultUDFFinder(String[] functionNames, FreeRefFunction[] functionImpls) {
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int nFuncs = functionNames.length;
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if (functionImpls.length != nFuncs) {
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throw new IllegalArgumentException(
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"Mismatch in number of function names and implementations");
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}
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HashMap<String, FreeRefFunction> m = new HashMap<String, FreeRefFunction>(nFuncs * 3 / 2);
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for (int i = 0; i < functionImpls.length; i++) {
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m.put(functionNames[i].toUpperCase(), functionImpls[i]);
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}
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_functionsByName = m;
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}
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public FreeRefFunction findFunction(String name) {
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return _functionsByName.get(name.toUpperCase());
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}
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}
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