org.memex.GunAdsParser.java Source code

Introduction

Here is the source code for org.memex.GunAdsParser.java

Source

/*
 * 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.memex;

import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.util.HashMap;
import java.util.Map;

import org.apache.http.client.HttpClient;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.SystemDefaultHttpClient;
import org.apache.solr.client.solrj.SolrClient;
import org.apache.solr.client.solrj.SolrQuery;
import org.apache.solr.client.solrj.SolrServerException;
import org.apache.solr.client.solrj.impl.HttpSolrClient;
import org.apache.solr.client.solrj.response.QueryResponse;
import org.apache.solr.common.SolrDocument;
import org.apache.solr.common.SolrDocumentList;
import org.apache.solr.common.SolrInputDocument;

import opennlp.tools.sentiment.SentimentME;
import opennlp.tools.sentiment.SentimentModel;

public class GunAdsParser {

    private static String fq = "mainType:text";
    private static int start = 0;
    private static int rows = 10;
    private SolrClient solrCore;
    private static File modelFile = null;

    public GunAdsParser(String url) throws MalformedURLException {
        SystemDefaultHttpClient httpClient = new SystemDefaultHttpClient();
        solrCore = new HttpSolrClient(url, httpClient);
    }

    public void getAds(String modelFilePath, int start) throws SolrServerException, IOException {
        File modelFile = new File(modelFilePath);

        // Construct a SolrQuery
        SolrQuery query = new SolrQuery();
        query.setQuery("*:*");
        query.setFields("content", "id");
        query.addFilterQuery(fq);
        query.setStart(start);
        query.setRows(rows);

        QueryResponse rsp = this.solrCore.query(query);
        SolrDocumentList list = rsp.getResults();

        SentimentModel model = new SentimentModel(modelFile);
        SentimentME sentiment = new SentimentME(model);

        while (list.getNumFound() > list.getStart() + rows) {
            long index = list.getStart();
            for (SolrDocument doc : list) {
                String result = sentiment.predict((doc.getFieldValue("content")).toString());
                SolrInputDocument document = new SolrInputDocument();
                Map<String, Object> operation = new HashMap<>();
                operation.put("set", result);
                document.addField("id", doc.getFieldValue("id"));
                document.addField("sentiment_s_md", operation);
                System.out.println(doc.getFieldValue("id"));
                solrCore.add(document);
                solrCore.commit();
                if (true) {
                    return;
                }
                System.out.println(index + ": " + result);
                index++;
            }
            //commit
            solrCore.commit();
            if (list.getNumFound() > list.getStart() + rows) {
                query.setStart((int) (list.getStart() + rows));
                rsp = this.solrCore.query(query);
                list = rsp.getResults();
            }
        }

    }

    public static void main(String[] args) throws SolrServerException, IOException {
        GunAdsParser parser = new GunAdsParser(args[0]);
        parser.getAds(args[1], Integer.valueOf(args[2]));
    }

}