org.xacml4j.v30.marshal.json.GsonUtil.java Source code

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Here is the source code for org.xacml4j.v30.marshal.json.GsonUtil.java

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package org.xacml4j.v30.marshal.json;

/*
 * #%L
 * Xacml4J Gson Integration
 * %%
 * Copyright (C) 2009 - 2014 Xacml4J.org
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/lgpl-3.0.html>.
 * #L%
 */

import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonPrimitive;
import com.google.gson.reflect.TypeToken;

class GsonUtil {
    /** Private constructor for utility class */
    private GsonUtil() {
    }

    public static boolean getAsBoolean(JsonObject o, String memberName, boolean defaultValue) {
        JsonPrimitive v = o.getAsJsonPrimitive(memberName);
        return (v != null) ? v.getAsBoolean() : defaultValue;
    }

    public static String getAsString(JsonObject o, String memberName, String defaultValue) {
        JsonPrimitive v = o.getAsJsonPrimitive(memberName);
        return (v != null) ? v.getAsString() : defaultValue;
    }

    public static <T> T deserialize(JsonElement e, JsonDeserializationContext context) {
        return (e != null) ? context.<T>deserialize(e, new TypeToken<T>() {
        }.getType()) : null;
    }
}