/* ====================================================================
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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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namespace HH.WMS.Utils.NPOI.SS.Formula.Udf
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{
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using System;
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using HH.WMS.Utils.NPOI.SS.Formula.Functions;
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using System.Collections.Generic;
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/**
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* Collects Add-in libraries and VB macro functions toGether into one UDF Finder
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*
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* @author PUdalau
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*/
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public class AggregatingUDFFinder : UDFFinder
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{
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private List<UDFFinder> _usedToolPacks = new List<UDFFinder>();
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public AggregatingUDFFinder(params UDFFinder[] usedToolPacks)
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{
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_usedToolPacks = new List<UDFFinder>(usedToolPacks.Length);
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_usedToolPacks.AddRange(usedToolPacks);
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}
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/// <summary>
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/// Returns executor by specified name.
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/// </summary>
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/// <param name="name">Name of function.</param>
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/// <returns>Function executor. null if not found</returns>
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public override FreeRefFunction FindFunction(String name)
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{
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FreeRefFunction evaluatorForFunction;
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foreach (UDFFinder pack in _usedToolPacks)
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{
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evaluatorForFunction = pack.FindFunction(name);
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if (evaluatorForFunction != null)
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{
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return evaluatorForFunction;
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}
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}
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return null;
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}
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/// <summary>
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/// Add a new toolpack
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/// </summary>
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/// <param name="toolPack"></param>
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public void Add(UDFFinder toolPack)
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{
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_usedToolPacks.Add(toolPack);
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}
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}
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}
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