/**
* 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 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 org.apache.camel.component.twitter.producer;
import java.util.List;
import org.apache.camel.CamelExchangeException;
import org.apache.camel.Exchange;
import org.apache.camel.component.twitter.TwitterConstants;
import org.apache.camel.component.twitter.TwitterEndpoint;
import twitter4j.Query;
import twitter4j.QueryResult;
import twitter4j.Tweet;
import twitter4j.Twitter;
public class SearchProducer extends Twitter4JProducer {
private long lastId;
public SearchProducer(TwitterEndpoint te) {
super(te);
}
@Override
public void process(Exchange exchange) throws Exception {
// keywords from header take precedence
String keywords = exchange.getIn().getHeader(TwitterConstants.TWITTER_KEYWORDS, String.class);
if (keywords == null) {
keywords = te.getProperties().getKeywords();
}
if (keywords == null) {
throw new CamelExchangeException("No keywords to use for query", exchange);
}
Query query = new Query(keywords);
if (lastId != 0) {
query.setSinceId(lastId);
}
Twitter twitter = te.getProperties().getTwitter();
log.debug("Searching twitter with keywords: {}", keywords);
QueryResult results = twitter.search(query);
List<Tweet> list = results.getTweets();
for (Tweet t : list) {
long newId = t.getId();
if (newId > lastId) {
lastId = newId;
}
}
exchange.getIn().setBody(list);
}
}