/*
* 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.solr.ltr.norm;
import java.util.LinkedHashMap;
/**
* A Normalizer that normalizes a feature value to itself. This is the
* default normalizer class, if no normalizer is configured then the
* IdentityNormalizer will be used.
*/
public class IdentityNormalizer extends Normalizer {
public static final IdentityNormalizer INSTANCE = new IdentityNormalizer();
public IdentityNormalizer() {
}
@Override
public float normalize(float value) {
return value;
}
@Override
public LinkedHashMap<String,Object> paramsToMap() {
return null;
}
@Override
protected void validate() throws NormalizerException {
}
@Override
public String toString() {
return getClass().getSimpleName();
}
}