| /* |
| * 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.lucene.queries.function.valuesource; |
| |
| import java.io.IOException; |
| |
| import org.apache.lucene.queries.function.FunctionValues; |
| import org.apache.lucene.queries.function.ValueSource; |
| |
| /** |
| * <code>MinFloatFunction</code> returns the min of its components. |
| */ |
| public class MinFloatFunction extends MultiFloatFunction { |
| public MinFloatFunction(ValueSource[] sources) { |
| super(sources); |
| } |
| |
| @Override |
| protected String name() { |
| return "min"; |
| } |
| |
| @Override |
| protected float func(int doc, FunctionValues[] valsArr) throws IOException { |
| if ( ! exists(doc, valsArr) ) return 0.0f; |
| |
| float val = Float.POSITIVE_INFINITY; |
| for (FunctionValues vals : valsArr) { |
| if (vals.exists(doc)) { |
| val = Math.min(vals.floatVal(doc), val); |
| } |
| } |
| return val; |
| } |
| |
| /** |
| * True if <em>any</em> of the specified <code>values</code> |
| * {@link FunctionValues#exists} for the specified doc, else false. |
| * |
| * @see MultiFunction#anyExists |
| */ |
| @Override |
| protected boolean exists(int doc, FunctionValues[] valsArr) throws IOException { |
| return MultiFunction.anyExists(doc, valsArr); |
| } |
| |
| } |