| using System; |
| |
| namespace Lucene.Net.Queries.Function.ValueSources |
| { |
| /* |
| * 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. |
| */ |
| |
| /// <summary> |
| /// <see cref="MaxSingleFunction"/> returns the max of it's components. |
| /// <para/> |
| /// NOTE: This was MaxFloatFunction in Lucene |
| /// </summary> |
| public class MaxSingleFunction : MultiSingleFunction |
| { |
| public MaxSingleFunction(ValueSource[] sources) |
| : base(sources) |
| { |
| } |
| |
| protected override string Name => "max"; |
| |
| protected override float Func(int doc, FunctionValues[] valsArr) |
| { |
| if (valsArr.Length == 0) |
| { |
| return 0.0f; |
| } |
| float val = float.NegativeInfinity; |
| foreach (FunctionValues vals in valsArr) |
| { |
| val = Math.Max(vals.SingleVal(doc), val); |
| } |
| return val; |
| } |
| } |
| } |