com.ibm.common.activitystreams.legacy.MediaLinkAdapter.java Source code

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Here is the source code for com.ibm.common.activitystreams.legacy.MediaLinkAdapter.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.legacy;

import java.lang.reflect.Type;
import java.util.Map;

import static com.google.common.base.Preconditions.checkArgument;

import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;
import com.google.gson.JsonSerializationContext;
import com.ibm.common.activitystreams.ASObject;
import static com.ibm.common.activitystreams.internal.ASObjectAdapter.primConverter;
import com.ibm.common.activitystreams.internal.Adapter;

public final class MediaLinkAdapter extends Adapter<MediaLink> {

    public JsonElement serialize(MediaLink src, Type typeOfSrc, JsonSerializationContext context) {
        JsonObject el = new JsonObject();
        for (String key : src) {
            Object val = src.get(key);
            if (val != null)
                el.add(key, context.serialize(val, val.getClass()));
        }
        return el;
    }

    public MediaLink deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
            throws JsonParseException {

        checkArgument(json.isJsonObject());
        JsonObject obj = (JsonObject) json;
        MediaLink.Builder builder = LegacyMakers.mediaLink();
        for (Map.Entry<String, JsonElement> entry : obj.entrySet()) {
            String name = entry.getKey();
            JsonElement val = entry.getValue();
            if (val.isJsonPrimitive())
                builder.set(name, primConverter.convert(val.getAsJsonPrimitive()));
            else if (val.isJsonArray())
                builder.set(name, context.deserialize(val, Iterable.class));
            else if (val.isJsonObject())
                builder.set(name, context.deserialize(val, ASObject.class));
        }
        return builder.get();
    }

}