com.ikanow.infinit.e.data_model.api.gui.UIModulePojoApiMap.java Source code

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Here is the source code for com.ikanow.infinit.e.data_model.api.gui.UIModulePojoApiMap.java

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/*******************************************************************************
 * Copyright 2012 The Infinit.e Open Source Project
 * 
 * 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 com.ikanow.infinit.e.data_model.api.gui;

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

import org.bson.types.ObjectId;

import com.google.gson.GsonBuilder;
import com.google.gson.JsonElement;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;
import com.ikanow.infinit.e.data_model.api.BaseApiPojo;
import com.ikanow.infinit.e.data_model.api.BasePojoApiMap;
import com.ikanow.infinit.e.data_model.store.social.gui.UIModulePojo;

public class UIModulePojoApiMap implements BasePojoApiMap<UIModulePojo> {

    public UIModulePojoApiMap(Set<ObjectId> allowedCommunityIds) {
        _allowedCommunityIds = allowedCommunityIds;
    }

    private Set<ObjectId> _allowedCommunityIds = null;

    public GsonBuilder extendBuilder(GsonBuilder gp) {
        return gp.registerTypeAdapter(UIModulePojo.class, new UIModulePojoSerializer(_allowedCommunityIds));
    }

    protected static class UIModulePojoSerializer implements JsonSerializer<UIModulePojo> {
        private Set<ObjectId> _allowedCommunityIds = null;

        UIModulePojoSerializer(Set<ObjectId> allowedCommunityIds) {
            _allowedCommunityIds = allowedCommunityIds;
        }

        @Override
        public JsonElement serialize(UIModulePojo module, Type typeOfT, JsonSerializationContext context) {
            Set<ObjectId> tmp = module.getCommunityIds();
            if (null != tmp) {
                module.setCommunityIds(null);
                for (ObjectId communityID : tmp) {
                    if ((null == _allowedCommunityIds) || _allowedCommunityIds.contains(communityID)) {
                        // (if allowed community ids == null, some sort of admin condition)
                        module.addToCommunityIds(communityID);
                    }
                }
            }
            JsonElement json = BaseApiPojo.getDefaultBuilder().create().toJsonTree(module);
            if (null != tmp) { // (this just ensures that the pojo isn't modified by the mapping)
                module.setCommunityIds(tmp);
            }
            return json;
        }
    }
}//TESTED