com.ibm.common.activitystreams.internal.SimpleAdapter.java Source code

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Here is the source code for com.ibm.common.activitystreams.internal.SimpleAdapter.java

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/**
 * Copyright 2013 OpenSocial Foundation
 * Copyright 2013 International Business Machines Corporation
 *
 * 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.
 *
 * Utility library for working with Activity Streams Actions
 * Requires underscorejs.
 *
 * @author James M Snell (jasnell@us.ibm.com)
 */

package com.ibm.common.activitystreams.internal;

import java.lang.reflect.Type;

import com.google.common.base.Function;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonElement;
import com.google.gson.JsonParseException;
import com.google.gson.JsonSerializationContext;

/**
 * @author james
 * @version $Revision: 1.0 $
 */
public abstract class SimpleAdapter<T> extends Adapter<T> implements Function<String, T> {

    /**
     * Method serialize.
     * @param t T
     * @param type Type
     * @param context JsonSerializationContext
        
        
     * @return JsonElement * @see com.google.gson.JsonSerializer#serialize(T, Type, JsonSerializationContext) */
    public JsonElement serialize(T t, Type type, JsonSerializationContext context) {
        return context.serialize(serialize(t));
    }

    /**
     * Method serialize.
     * @param t T
        
     * @return String */
    protected String serialize(T t) {
        return t != null ? t.toString() : null;
    }

    /**
     * Method deserialize.
     * @param v String
        
     * @return T */
    protected T deserialize(String v) {
        return apply(v);
    }

    /**
     * Method deserialize.
     * @param json JsonElement
     * @param type Type
     * @param context JsonDeserializationContext
        
        
        
     * @return T * @throws JsonParseException * @see com.google.gson.JsonDeserializer#deserialize(JsonElement, Type, JsonDeserializationContext) */
    public T deserialize(JsonElement json, Type type, JsonDeserializationContext context)
            throws JsonParseException {
        return deserialize(json.getAsJsonPrimitive().getAsString());
    }
}