com.stratio.cassandra.lucene.schema.analysis.ClasspathAnalyzerBuilder Maven / Gradle / Ivy
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/*
* Copyright (C) 2014 Stratio (http://stratio.com)
*
* Licensed 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 com.stratio.cassandra.lucene.schema.analysis;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.stratio.cassandra.lucene.IndexException;
import org.apache.lucene.analysis.Analyzer;
import java.lang.reflect.Constructor;
/**
* {@link AnalyzerBuilder} for building {@link Analyzer}s in classpath using its default (no args) constructor.
*
* @author Andres de la Pena {@literal }
*/
public class ClasspathAnalyzerBuilder extends AnalyzerBuilder {
@JsonProperty("class")
private final String className;
/**
* Builds a new {@link AnalyzerBuilder} using the specified {@link Analyzer} full class name.
*
* @param className an {@link Analyzer} full qualified class name
*/
@JsonCreator
public ClasspathAnalyzerBuilder(@JsonProperty("class") String className) {
this.className = className;
}
/** {@inheritDoc} */
@Override
public Analyzer analyzer() {
try {
Class analyzerClass = Class.forName(className);
Constructor constructor = analyzerClass.getConstructor();
return (Analyzer) constructor.newInstance();
} catch (Exception e) {
throw new IndexException(e, "Not found analyzer '{}'", className);
}
}
}