org.elasticsearch.index.analysis.NumericFloatAnalyzer Maven / Gradle / Ivy
/*
* Licensed to ElasticSearch and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. ElasticSearch 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.elasticsearch.index.analysis;
import com.carrotsearch.hppc.IntObjectOpenHashMap;
import org.apache.lucene.util.NumericUtils;
import java.io.IOException;
import java.io.Reader;
/**
*
*/
public class NumericFloatAnalyzer extends NumericAnalyzer {
private final static IntObjectOpenHashMap builtIn;
static {
builtIn = new IntObjectOpenHashMap();
builtIn.put(Integer.MAX_VALUE, new NamedAnalyzer("_float/max", AnalyzerScope.GLOBAL, new NumericFloatAnalyzer(Integer.MAX_VALUE)));
for (int i = 0; i <= 64; i += 4) {
builtIn.put(i, new NamedAnalyzer("_float/" + i, AnalyzerScope.GLOBAL, new NumericFloatAnalyzer(i)));
}
}
public static NamedAnalyzer buildNamedAnalyzer(int precisionStep) {
NamedAnalyzer namedAnalyzer = builtIn.get(precisionStep);
if (namedAnalyzer == null) {
namedAnalyzer = new NamedAnalyzer("_float/" + precisionStep, AnalyzerScope.INDEX, new NumericFloatAnalyzer(precisionStep));
}
return namedAnalyzer;
}
private final int precisionStep;
public NumericFloatAnalyzer() {
this(NumericUtils.PRECISION_STEP_DEFAULT);
}
public NumericFloatAnalyzer(int precisionStep) {
this.precisionStep = precisionStep;
}
@Override
protected NumericFloatTokenizer createNumericTokenizer(Reader reader, char[] buffer) throws IOException {
return new NumericFloatTokenizer(reader, precisionStep, buffer);
}
}