org.apache.accumulo.examples.wikisearch.normalizer.NumberNormalizer.java Source code

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Here is the source code for org.apache.accumulo.examples.wikisearch.normalizer.NumberNormalizer.java

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/*
 * 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.accumulo.examples.wikisearch.normalizer;

import org.apache.commons.lang.math.NumberUtils;
import org.apache.lucene.util.NumericUtils;

public class NumberNormalizer implements Normalizer {

    public String normalizeFieldValue(String field, Object value) {
        if (NumberUtils.isNumber(value.toString())) {
            Number n = NumberUtils.createNumber(value.toString());
            if (n instanceof Integer)
                return NumericUtils.intToPrefixCoded((Integer) n);
            else if (n instanceof Long)
                return NumericUtils.longToPrefixCoded((Long) n);
            else if (n instanceof Float)
                return NumericUtils.floatToPrefixCoded((Float) n);
            else if (n instanceof Double)
                return NumericUtils.doubleToPrefixCoded((Double) n);
            else
                throw new IllegalArgumentException("Unhandled numeric type: " + n.getClass());
        } else {
            throw new IllegalArgumentException("Value is not a number: " + value);
        }
    }

}