/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
*
* 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 org.apache.streams.twitter.converter;
import org.apache.streams.data.ActivityConverter;
import org.apache.streams.exceptions.ActivityConversionException;
import org.apache.streams.pojo.json.Activity;
import org.apache.streams.pojo.json.Provider;
import org.apache.streams.twitter.converter.util.TwitterActivityUtil;
import org.apache.streams.twitter.pojo.Follow;
import org.apache.commons.lang.NotImplementedException;
import java.io.Serializable;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class TwitterFollowActivityConverter implements ActivityConverter<Follow>, Serializable {
public TwitterFollowActivityConverter() {
}
private static TwitterFollowActivityConverter instance = new TwitterFollowActivityConverter();
public static TwitterFollowActivityConverter getInstance() {
return instance;
}
public static Class requiredClass = Follow.class;
@Override
public Class requiredClass() {
return requiredClass;
}
@Override
public String serializationFormat() {
return null;
}
@Override
public Follow fromActivity(Activity deserialized) throws ActivityConversionException {
throw new NotImplementedException();
}
@Override
public List<Follow> fromActivityList(List<Activity> list) {
throw new NotImplementedException();
}
@Override
public List<Activity> toActivityList(Follow event) throws ActivityConversionException {
Activity activity = new Activity();
activity.setVerb("follow");
activity.setActor(TwitterActivityUtil.buildActor(event.getFollower()));
activity.setObject(TwitterActivityUtil.buildActor(event.getFollowee()));
activity.setId(activity.getActor().getId() + "-follow->" + activity.getObject().getId());
activity.setProvider((Provider) new Provider().withId("twitter"));
return Stream.of(activity).collect(Collectors.toList());
}
@Override
public List<Activity> toActivityList(List<Follow> list) {
throw new NotImplementedException();
}
}