at.orz.arangodb.util.JsonUtils.java Source code

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Here is the source code for at.orz.arangodb.util.JsonUtils.java

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/*
 * Copyright (C) 2012 tamtam180
 *
 * 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 at.orz.arangodb.util;

import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonPrimitive;

/**
 * @author tamtam180 - kirscheless at gmail.com
 *
 */
public class JsonUtils {

    public static int[] toArray(JsonArray array) {
        int len = array.size();
        int[] iarray = new int[len];
        for (int i = 0; i < len; i++) {
            iarray[i] = array.get(i).getAsInt();
        }
        return iarray;
    }

    public static double[] toDoubleArray(JsonArray array) {
        int len = array.size();
        double[] darray = new double[len];
        for (int i = 0; i < len; i++) {
            darray[i] = toDouble(array.get(i));
        }
        return darray;
    }

    public static double toDouble(JsonElement elem) {
        if (elem != null && !elem.isJsonNull()) {
            JsonPrimitive primitive = elem.getAsJsonPrimitive();
            if (primitive.isNumber()) {
                return primitive.getAsDouble();
            } else if (primitive.isString()) {
                if ("INF".equals(primitive.getAsString())) {
                    return Double.POSITIVE_INFINITY;
                } else if ("NaN".equals(primitive.getAsString())) {
                    return Double.NaN;
                }
            }
        }
        return Double.NaN;
    }

}