/*
* 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 org.apache.lucene.queries.function.FunctionValues;
import org.apache.lucene.queries.function.ValueSource;
/**
* <code>MaxFloatFunction</code> returns the max of it's components.
*/
public class MaxFloatFunction extends MultiFloatFunction {
public MaxFloatFunction(ValueSource[] sources) {
super(sources);
}
@Override
protected String name() {
return "max";
}
@Override
protected float func(int doc, FunctionValues[] valsArr) {
if (valsArr.length == 0) return 0.0f;
float val = Float.NEGATIVE_INFINITY;
for (FunctionValues vals : valsArr) {
val = Math.max(vals.floatVal(doc), val);
}
return val;
}
}