org.apache.accumulo.examples.wikisearch.function.QueryFunctions.java Source code

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Here is the source code for org.apache.accumulo.examples.wikisearch.function.QueryFunctions.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.function;

import org.apache.commons.lang.math.NumberUtils;
import org.apache.log4j.Logger;

public class QueryFunctions {

    protected static Logger log = Logger.getLogger(QueryFunctions.class);

    public static boolean between(String fieldValue, double left, double right) {
        try {
            Double value = Double.parseDouble(fieldValue);
            if (value >= left && value <= right)
                return true;
            return false;
        } catch (NumberFormatException nfe) {
            return false;
        }
    }

    public static boolean between(String fieldValue, long left, long right) {
        try {
            Long value = Long.parseLong(fieldValue);
            if (value >= left && value <= right)
                return true;
            return false;
        } catch (NumberFormatException nfe) {
            return false;
        }
    }

    public static Number abs(String fieldValue) {
        Number retval = null;
        try {
            Number value = NumberUtils.createNumber(fieldValue);
            if (null == value)
                retval = (Number) Integer.MIN_VALUE;
            else if (value instanceof Long)
                retval = Math.abs(value.longValue());
            else if (value instanceof Double)
                retval = Math.abs(value.doubleValue());
            else if (value instanceof Float)
                retval = Math.abs(value.floatValue());
            else if (value instanceof Integer)
                retval = Math.abs(value.intValue());
        } catch (NumberFormatException nfe) {
            return (Number) Integer.MIN_VALUE;
        }
        return retval;
    }

}