1 | package org.greenstone.atea;
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2 |
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3 | //import org.bson.BSONObject;
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4 |
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5 | import com.mongodb.client.AggregateIterable;
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6 | import com.mongodb.client.MongoCollection;
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7 | import com.mongodb.client.MongoDatabase;
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8 | //import com.mongodb.client.MongoIterable;
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9 |
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10 | // to use collection.find() filters like eq(), regex() etc
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11 | import static com.mongodb.client.model.Filters.*;
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12 | // to use collection.find().projection() filters like include() etc
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13 | import static com.mongodb.client.model.Projections.*;
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14 | // to use aggregation functions like unwind(), match(), sort() etc
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15 | import static com.mongodb.client.model.Aggregates.*;
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16 | // to use functions like sum() and addToSet() within aggregation functions
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17 | import static com.mongodb.client.model.Accumulators.*;
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18 |
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19 | //import org.bson.conversions.Bson;
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20 | import com.mongodb.BasicDBObject;
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21 | import com.mongodb.MongoClient;
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22 | import com.mongodb.MongoCredential;
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23 | import com.mongodb.ServerAddress;
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24 | import com.mongodb.MongoClientOptions;
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25 |
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26 | import com.mongodb.Block;
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27 |
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28 | import org.bson.Document;
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29 | import org.bson.conversions.Bson;
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30 | import org.bson.json.JsonMode;
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31 | import org.bson.json.JsonWriterSettings;
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32 |
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33 | import com.mongodb.util.JSON;
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34 | //import com.mongodb.DBObject;
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35 |
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36 |
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37 | import com.google.gson.*; // for pretty printing
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38 |
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39 | import java.io.BufferedReader;
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40 | import java.io.BufferedWriter;
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41 | import java.io.File;
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42 | import java.io.FileReader;
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43 | import java.io.FileWriter;
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44 | import java.io.IOException;
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45 | import java.io.UncheckedIOException;
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46 | import java.io.Writer;
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47 |
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48 | import java.util.Arrays;
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49 | import java.util.ArrayList;
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50 | import java.util.List;
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51 | import java.util.Properties;
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52 | import java.util.regex.Pattern;
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53 |
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54 | import org.apache.log4j.Logger;
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55 |
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56 | import org.greenstone.atea.morphia.*;
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57 | import dev.morphia.*;
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58 |
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59 | import org.apache.commons.csv.*;
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60 |
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61 | /**
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62 | * https://www.tutorialspoint.com/mongodb/mongodb_java.htm
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63 | *
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64 | * TO COMPILE:
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65 | * maori-lang-detection/src$
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66 | * javac -cp ".:../conf:../lib/*" org/greenstone/atea/MongoDBAccess.java
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67 | *
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68 | * TO RUN:
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69 | * java -cp ".:../conf:../lib/*" org.greenstone.atea.MongoDBAccess
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70 | *
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71 | * Manually connecting to mongodb from client:
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72 | * mongo 'mongodb://mongodb.cms.waikato.ac.nz:27017' -u USERNAME -p
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73 | * Then after connecting with pwd, type:
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74 | * use DBNAME
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75 | *
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76 | * Or connect to mongodb and specify db in one statement:
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77 | * mongo 'mongodb://mongodb.cms.waikato.ac.nz:27017/DBNAME?authSource=admin' -u USERNAME -p
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78 | *
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79 | * Some links:
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80 | * - https://stackoverflow.com/questions/19938153/do-i-need-to-explicitly-close-connection
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81 | * - https://docs.mongodb.com/manual/reference/glossary/ (particularly "collection")
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82 | * - https://tecadmin.net/tutorial/mongodb/drop-collection/
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83 | * IMPORTANT LINK:
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84 | * - https://www.mongodb.com/blog/post/6-rules-of-thumb-for-mongodb-schema-design-part-1
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85 | *
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86 | * API:
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87 | * - https://mongodb.github.io/mongo-java-driver/3.4/javadoc/?com/mongodb/client/MongoCollection.html#find--
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88 | * - examples: https://mongodb.github.io/mongo-java-driver/3.4/driver/getting-started/quick-start/
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89 | */
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90 | public class MongoDBAccess implements AutoCloseable {
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91 |
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92 | private static Logger logger = Logger.getLogger(org.greenstone.atea.MongoDBAccess.class.getName());
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93 |
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94 | static final String PROPS_FILENAME = "config.properties";
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95 | public static final String WEBPAGES_COLLECTION = "Webpages";
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96 | public static final String WEBSITES_COLLECTION = "Websites";
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97 |
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98 | public static final String NEWLINE = System.getProperty("line.separator");
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99 |
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100 | /** mongodb filter types to execute */
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101 | public static final int IS_MRI = 0;
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102 | public static final int CONTAINS_MRI = 1;
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103 |
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104 | /** Some reused fieldnames in the Websites collection */
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105 | private static final String FILTER_NUMPAGES_IN_MRI = "numPagesInMRI";
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106 | private static final String FILTER_NUMPAGES_CONTAINING_MRI = "numPagesContainingMRI";
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107 |
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108 | // configuration details, some with fallback values
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109 | private String HOST = "localhost";
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110 | private int PORT = 27017; // mongodb port
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111 | private String USERNAME;
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112 | private String PASSWORD;
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113 | private String DB_NAME ="ateacrawldata";
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114 |
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115 | private MongoClient mongo = null;
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116 | private MongoDatabase database = null;
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117 |
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118 | /**
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119 | * Mongodb Client handle via morphia, which handles the ODM (object document mapper)
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120 | * for MongoDB
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121 | */
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122 | public Datastore datastore = null;
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123 |
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124 | public MongoDBAccess() throws Exception {
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125 | boolean success = false;
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126 |
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127 | // Read in the username and password from our props file
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128 | Properties props = new Properties();
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129 |
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130 | //File propsFile = new File(PROPS_FILENAME);
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131 | //logger.debug("*** Conf props filename: " + propsFile.getAbsolutePath());
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132 | try {
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133 | props.load(getClass().getClassLoader().getResourceAsStream(PROPS_FILENAME));
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134 | } catch(Exception e) {
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135 | logger.error(e);
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136 | }
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137 |
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138 |
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139 | USERNAME = props.getProperty("mongodb.user", "");
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140 | if(USERNAME.equals("")) {
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141 | USERNAME = "root";
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142 | logger.warn("WARNING: No sensible value for mongodb.user specified in " + PROPS_FILENAME + ". Attempting to use: " + USERNAME);
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143 | }
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144 | PASSWORD = props.getProperty("mongodb.pwd");
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145 |
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146 | logger.debug("Got pwd: " + PASSWORD);
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147 |
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148 | if(PASSWORD != null && PASSWORD.equals("CHANGEME")) {
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149 |
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150 | success = false;
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151 | throw new Exception("************ FATAL ERROR: Change DB password in properties file " + PROPS_FILENAME);
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152 | }
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153 |
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154 | HOST = props.getProperty("mongodb.host", HOST);
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155 | String port = props.getProperty("mongodb.port", Integer.toString(PORT));
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156 | PORT = Integer.parseInt(port);
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157 | DB_NAME = props.getProperty("mongodb.dbname", DB_NAME);
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158 |
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159 | logger.info("Connecting to mongodb with:");
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160 | logger.info(" - host: " + HOST);
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161 | logger.info(" - port: " + PORT);
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162 | logger.info(" - user: " + USERNAME);
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163 | logger.info(" - db name: " + DB_NAME);
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164 | }
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165 |
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166 | /**
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167 | * Since we have only a single MongoClient, don't need to call close/disconnect on it as per
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168 | * https://stackoverflow.com/questions/19938153/do-i-need-to-explicitly-close-connection
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169 | */
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170 | public void connectToDB() throws Exception {
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171 |
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172 | // Creating a Mongo client
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173 | mongo = new MongoClient( HOST, PORT );
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174 |
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175 | // Creating Credentials
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176 | MongoCredential credential;
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177 | credential = MongoCredential.createCredential(USERNAME, DB_NAME, PASSWORD.toCharArray());
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178 | System.out.println("Connected to the database successfully");
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179 |
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180 | // Accessing the database
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181 | this.database = mongo.getDatabase(DB_NAME);
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182 | logger.info("Credentials: "+ credential);
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183 |
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184 | /*
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185 | MongoCredential credential;
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186 | credential = MongoCredential.createCredential(USERNAME, DB_NAME, PASSWORD.toCharArray());
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187 | logger.info("Credentials: "+ credential);
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188 |
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189 | // Create our Mongo client
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190 | mongo = new MongoClient( new ServerAddress(HOST, PORT), credential, new MongoClientOptions.Builder().build());
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191 | System.out.println("Connected to the database successfully");
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192 |
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193 | this.database = mongo.getDatabase(DB_NAME);
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194 | */
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195 |
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196 | Morphia morphia = new Morphia();
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197 | morphia.mapPackage("com.greenstone.atea.morphia");
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198 | datastore = morphia.createDatastore(mongo, DB_NAME);
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199 | datastore.ensureIndexes();
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200 |
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201 | }
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202 |
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203 | // TODO: which fields should be indexed?
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204 |
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205 | public void showCollections() {
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206 | //MongoIterable<String> colls = this.database.listCollectionNames();
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207 | for(String coll : this.database.listCollectionNames()) {
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208 | System.err.println("coll: " + coll);
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209 | }
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210 | }
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211 |
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212 | /*
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213 | public void insertWebsiteInfo(WebsiteInfo website)
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214 | {
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215 | MongoCollection<Document> collection = this.database.getCollection(WEBSITES_COLLECTION);
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216 | Document document = new Document("_id", website.id)
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217 | .append("siteFolderName", website.siteFolderName)
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218 | .append("domain", website.domain)
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219 | .append("totalPages", website.totalPages)
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220 | .append("numPagesWithBodyText", website.countOfWebPagesWithBodyText)
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221 | .append("numPagesInMRI", website.numPagesInMRI)
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222 | .append("siteCrawledTimestamp", website.siteCrawledTimestamp)
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223 | .append("siteCrawlUnfinished", website.siteCrawlUnfinished)
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224 | .append("redoCrawl", website.redoCrawl);
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225 |
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226 | document.put("urlContainsLangCodeInpath", website.urlContainsLangCodeInpath);
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227 | if(website.geoLocationCountryCode != null && !website.geoLocationCountryCode.equals("")) {
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228 | document.put("countryCode", website.geoLocationCountryCode);
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229 | }
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230 |
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231 | collection.insertOne(document);
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232 | logger.debug("Website info for " + website.id + "(" + website.siteFolderName + ")"
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233 | + " inserted successfully into " + WEBSITES_COLLECTION);
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234 | }
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235 | */
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236 |
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237 | /**
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238 | * Inserts a web page into the mongodb. Besides page related metadata and full body text
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239 | * the language information per sentence and per 2 adjacent sentences also get stored
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240 | * into the mongodb.
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241 | */
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242 | /*
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243 | public void insertWebpageInfo(WebpageInfo webpage)
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244 | {
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245 | int mri_sentence_count = 0;
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246 |
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247 | // load the webpages db 'table'
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248 | // in mongodb, the equivalent of db tables are called 'collections'
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249 | MongoCollection<Document> collection = this.database.getCollection(WEBPAGES_COLLECTION);
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250 |
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251 | Document document = new Document("_id", webpage.webpageID)
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252 | .append("siteid", webpage.websiteID)
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253 | .append("url", webpage.URL)
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254 | .append("isMRI", webpage.isMRI)
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255 | .append("totalSentences", webpage.totalSentences)
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256 | .append("charEncoding", webpage.charEncoding)
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257 | .append("modTime", webpage.modifiedTime)
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258 | .append("fetchTime", webpage.fetchTime);
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259 |
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260 | // INSTEAD, ARRAY OF OBJECTS TO BE INSERTED AS PER:
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261 | // https://stackoverflow.com/questions/15371839/how-to-add-an-array-to-a-mongodb-document-using-java
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262 | List<BasicDBObject> sentencesList = new ArrayList<>();
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263 | for(SentenceInfo sentenceInfo : webpage.singleSentences) {
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264 |
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265 | BasicDBObject bsonRecord = new BasicDBObject("langCode", sentenceInfo.langCode);
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266 |
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267 | bsonRecord.put("confidence", sentenceInfo.confidenceLevel);
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268 | bsonRecord.put("sentence", sentenceInfo.sentence);
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269 |
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270 | sentencesList.add(bsonRecord);
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271 |
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272 | if(sentenceInfo.langCode.equals(MaoriTextDetector.MAORI_3LETTER_CODE)) {
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273 | mri_sentence_count++;
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274 | }
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275 |
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276 | }
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277 | document.put("singleSentences", sentencesList);
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278 |
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279 | List<BasicDBObject> overlappingSentencesList = new ArrayList<>();
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280 | for(SentenceInfo sentenceInfo : webpage.overlappingSentences) {
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281 |
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282 | BasicDBObject bsonRecord = new BasicDBObject("langCode", sentenceInfo.langCode);
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283 | bsonRecord.put("confidence", sentenceInfo.confidenceLevel);
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284 | bsonRecord.put("sentence", sentenceInfo.sentence);
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285 |
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286 | overlappingSentencesList.add(bsonRecord);
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287 | }
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288 | document.put("overlappingSentences", overlappingSentencesList);
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289 |
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290 | // also put the full text in there
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291 | document.put("text", webpage.text);
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292 |
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293 | // also store the count of sentences in MRI
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294 | webpage.setMRISentenceCount(mri_sentence_count);
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295 | document.put("mriSentenceCount", mri_sentence_count);
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296 |
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297 |
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298 | collection.insertOne(document);
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299 | logger.debug("\nwebpage info for " + webpage.webpageID + " inserted successfully into " + WEBPAGES_COLLECTION);
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300 | }
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301 | */
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302 |
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303 | public ArrayList<String> queryAllMatchingIsMRIURLs(String domain) {
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304 | return queryAllMatchingURLsFilteredBy(domain, IS_MRI);
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305 | }
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306 | public ArrayList<String> queryAllMatchingcontainsMRIURLs(String domain) {
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307 | return queryAllMatchingURLsFilteredBy(domain, CONTAINS_MRI);
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308 | }
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309 |
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310 | /**
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311 | * Java mongodb find: https://mongodb.github.io/mongo-java-driver/3.4/driver/getting-started/quick-start/
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312 | * Java mongodb find filters: https://mongodb.github.io/mongo-java-driver/3.4/javadoc/?com/mongodb/client/model/Filters.html
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313 | * Java mongodb projection: https://stackoverflow.com/questions/44894497/retrieving-data-with-mongodb-java-driver-3-4-using-find-method-with-projection
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314 | * mongodb projection: https://docs.mongodb.com/v3.2/reference/method/db.collection.find/#db.collection.find
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315 | *
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316 | * Parse MongoDB query into Java: https://stackoverflow.com/questions/17326747/parsing-strings-to-mongodb-query-documents-with-operators-in-java
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317 | * Maybe also https://stackoverflow.com/questions/48000891/parse-mongodb-json-query-in-java-with-multiple-criteria
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318 | * https://stackoverflow.com/questions/55029222/parse-mongodb-query-to-java
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319 | * http://pingax.com/trick-convert-mongo-shell-query-equivalent-java-objects/
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320 | */
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321 | public ArrayList<String> queryAllMatchingURLsFilteredBy(String domain, int filterType) {
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322 |
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323 | final ArrayList<String> urlsList = new ArrayList<String>();
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324 |
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325 | // remove any http(s)://(www.) from the start of URL first
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326 | // since it goes into a regex
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327 | domain = Utility.stripProtocolAndWWWFromURL(domain);
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328 |
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329 | // load the "webpages" db table
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330 | // in mongodb, the equivalent of db tables are called 'collections'
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331 | MongoCollection<Document> collection = this.database.getCollection(WEBPAGES_COLLECTION);
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332 |
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333 | // code we'll execute in Iterable.forEach() below
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334 | // see also https://www.baeldung.com/foreach-java
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335 | Block<Document> storeURL = new Block<Document>() {
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336 | @Override
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337 | public void apply(final Document document) {
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338 | //System.out.println(document.toJson());
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339 | String url = document.getString("URL");
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340 | // add to our urlsList
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341 | //System.out.println(url);
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342 | urlsList.add(url);
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343 | }
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344 | };
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345 |
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346 |
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347 | // Run the following mongodb query:
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348 | // db.getCollection('Webpages').find({URL: /domain/, isMRI: true}, {URL: 1, _id: 0})
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349 |
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350 | // 1. One way that works:
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351 | //collection.find(and(eq("isMRI", true), regex("URL", pattern))).projection(fields(include("URL"), excludeId())).forEach(storeURL);
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352 |
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353 | // 2. Another way:
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354 | //String query = "{URL: /DOMAIN/, isMRI: true}";
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355 | String query = "{URL: /DOMAIN/, ";
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356 | if(filterType == IS_MRI) {
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357 | query += "isMRI: true}";
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358 | } else if(filterType == CONTAINS_MRI) {
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359 | query += "containsMRI: true}";
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360 | }
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361 |
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362 | domain = domain.replace(".", "\\."); // escape dots in domain for regex
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363 | query = query.replace("DOMAIN", domain);
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364 |
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365 | //System.err.println("Executing find query: " + query);
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366 |
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367 | BasicDBObject findObj = BasicDBObject.parse(query);
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368 | BasicDBObject projectionObj = BasicDBObject.parse("{URL: 1, _id: 0}");
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369 |
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370 |
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371 | collection.find(findObj).projection(projectionObj).forEach(storeURL);
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372 |
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373 | return urlsList;
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374 | }
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375 |
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376 | /**
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377 | * RUNNING A MONGODB COLLECTION.AGGREGATE() in JAVA:
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378 | *
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379 | * https://stackoverflow.com/questions/31643109/mongodb-aggregation-with-java-driver
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380 | * https://stackoverflow.com/questions/48000891/parse-mongodb-json-query-in-java-with-multiple-criteria
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381 | * Not Java: https://stackoverflow.com/questions/39060221/a-pipeline-stage-specification-object-must-contain-exactly-one-field-with-php-mo
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382 | *
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383 | * (https://stackoverflow.com/questions/55029222/parse-mongodb-query-to-java)
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384 | * https://www.programcreek.com/java-api-examples/?api=com.mongodb.client.model.Aggregates
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385 | * On using group(TExpression) inside collection.aggregate().
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386 | *
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387 | * For forEach lamba expressions, see also https://www.baeldung.com/foreach-java
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388 | * and https://www.javatpoint.com/java-8-foreach
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389 | * and https://stackoverflow.com/questions/47979978/ambiguous-reference-to-foreach-when-listing-mongodbs-database-in-java
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390 | *
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391 | *
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392 | * The mongodb aggregate() we want to run this time:
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393 | *
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394 | db.Websites.aggregate([
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395 | {
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396 | $match: {
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397 | $and: [
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398 | {numPagesContainingMRI: {$gt: 0}},
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399 | {$or: [{geoLocationCountryCode:"NZ"},{domain: /\.nz/}]}
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400 | ]
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401 | }
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402 | },
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403 | { $unwind: "$geoLocationCountryCode" },
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404 | {
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405 | $group: {
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406 | _id: "nz",
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407 | count: { $sum: 1 },
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408 | domain: { $addToSet: '$domain' }
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409 | }
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410 | },
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411 | { $sort : { count : -1} }
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412 | ]);
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413 | */
|
---|
414 | public void aggregateContainsMRIForNZ(Writer writer, int filterType) throws IOException {
|
---|
415 | // working with the WebSites collection, not WebPages collection!
|
---|
416 | MongoCollection<Document> collection = this.database.getCollection(WEBSITES_COLLECTION);
|
---|
417 |
|
---|
418 | String mriFilterString = (filterType == CONTAINS_MRI) ? "{numPagesContainingMRI: {$gt: 0}}" : "{numPagesInMRI: {$gt: 0}}";
|
---|
419 |
|
---|
420 | Bson orQuery = or(
|
---|
421 | BasicDBObject.parse("{geoLocationCountryCode: \"NZ\"}"),
|
---|
422 | BasicDBObject.parse("{domain: /\\.nz/}")
|
---|
423 | );
|
---|
424 | Bson andQuery = and(
|
---|
425 | BasicDBObject.parse(mriFilterString),
|
---|
426 | orQuery);
|
---|
427 |
|
---|
428 | // Hopefully the lambda expression (forEach()) at end means
|
---|
429 | // we write out each result Document as we get it
|
---|
430 | collection.aggregate(Arrays.asList(
|
---|
431 | match(andQuery),
|
---|
432 | unwind("$geoLocationCountryCode"),
|
---|
433 | group("NZ", Arrays.asList(sum("count", 1), addToSet("domain", "$domain"))),
|
---|
434 | sort(BasicDBObject.parse("{count : -1}"))
|
---|
435 | )).forEach((Block<Document>)doc -> writeDoc(doc, writer));
|
---|
436 |
|
---|
437 | // should only have one doc for NZ since it's a count by geolocation.
|
---|
438 |
|
---|
439 | return;
|
---|
440 | }
|
---|
441 |
|
---|
442 | /**
|
---|
443 | * The aggregate() we want to run this time:
|
---|
444 | *
|
---|
445 | db.Websites.aggregate([
|
---|
446 | {
|
---|
447 | $match: {
|
---|
448 | $and: [
|
---|
449 | {geoLocationCountryCode: {$ne: "NZ"}},
|
---|
450 | {domain: {$not: /\.nz/}},
|
---|
451 | {numPagesContainingMRI: {$gt: 0}},
|
---|
452 | {$or: [{geoLocationCountryCode: "AU"}, {urlContainsLangCodeInPath: false}]}
|
---|
453 | ]
|
---|
454 | }
|
---|
455 | },
|
---|
456 | { $unwind: "$geoLocationCountryCode" },
|
---|
457 | {
|
---|
458 | $group: {
|
---|
459 | _id: {$toLower: '$geoLocationCountryCode'},
|
---|
460 | count: { $sum: 1 },
|
---|
461 | domain: { $addToSet: '$domain' }
|
---|
462 | }
|
---|
463 | },
|
---|
464 | { $sort : { count : -1} }
|
---|
465 | ]);
|
---|
466 | */
|
---|
467 | public void aggregateContainsMRIForOverseas(Writer writer, int filterType,
|
---|
468 | boolean isMiInURLPath) throws UncheckedIOException
|
---|
469 | {
|
---|
470 | // working with the WebSites collection, not WebPages collection!
|
---|
471 | MongoCollection<Document> collection = this.database.getCollection(WEBSITES_COLLECTION);
|
---|
472 |
|
---|
473 | String mriFilterString = (filterType == CONTAINS_MRI) ? "{numPagesContainingMRI: {$gt: 0}}" : "{numPagesInMRI: {$gt: 0}}";
|
---|
474 |
|
---|
475 | Bson orQuery = or(
|
---|
476 | BasicDBObject.parse("{geoLocationCountryCode: \"AU\"}"),
|
---|
477 | BasicDBObject.parse("{urlContainsLangCodeInPath: "+ isMiInURLPath +"}")
|
---|
478 | // e.g. "{urlContainsLangCodeInPath: false}"
|
---|
479 | );
|
---|
480 | Bson andQuery = and(
|
---|
481 | BasicDBObject.parse("{geoLocationCountryCode: {$ne: \"NZ\"}}"),
|
---|
482 | BasicDBObject.parse("{domain: {$not: /\\.nz/}}"),
|
---|
483 | BasicDBObject.parse(mriFilterString),
|
---|
484 | orQuery);
|
---|
485 |
|
---|
486 |
|
---|
487 | collection.aggregate(Arrays.asList(
|
---|
488 | match(andQuery), //match(BasicDBObject.parse(matchQuery))
|
---|
489 | // match((List<DBObject>)JSON.parse(matchQuery)),
|
---|
490 | unwind("$geoLocationCountryCode"),
|
---|
491 | group("$geoLocationCountryCode", Arrays.asList(sum("count", 1), addToSet("domain", "$domain"))),
|
---|
492 | sort(BasicDBObject.parse("{count : -1}"))
|
---|
493 | )).forEach((Block<Document>)doc -> writeDoc(doc, writer));
|
---|
494 |
|
---|
495 | // casting to Block<Document> necessary because otherwise we see the error at
|
---|
496 | // https://stackoverflow.com/questions/47979978/ambiguous-reference-to-foreach-when-listing-mongodbs-database-in-java
|
---|
497 |
|
---|
498 | // Less efficient way is to keep all the results in memory and then
|
---|
499 | // write them out one at a time
|
---|
500 | /*
|
---|
501 | AggregateIterable<Document> output
|
---|
502 | = collection.aggregate(Arrays.asList(
|
---|
503 | match(andQuery), //match(BasicDBObject.parse(matchQuery))
|
---|
504 | // match((List<DBObject>)JSON.parse(matchQuery)),
|
---|
505 | unwind("$geoLocationCountryCode"),
|
---|
506 | group("$geoLocationCountryCode", Arrays.asList(sum("count", 1), addToSet("domain", "$domain"))),
|
---|
507 | sort(BasicDBObject.parse("{count : -1}"))
|
---|
508 | ));
|
---|
509 |
|
---|
510 |
|
---|
511 | for (Document doc : output) {
|
---|
512 | //System.out.println(doc);
|
---|
513 | System.out.println(doc.toJson());
|
---|
514 |
|
---|
515 | }
|
---|
516 | */
|
---|
517 | return;
|
---|
518 | }
|
---|
519 |
|
---|
520 | /** Do the aggregates for writing out tables.
|
---|
521 | Table1:
|
---|
522 |
|
---|
523 | */
|
---|
524 | public void writeTables(File outFolder) {
|
---|
525 | // In this function, we're always dealing with the Websites mongodb collection.
|
---|
526 | MongoCollection<Document> collection = this.database.getCollection(WEBSITES_COLLECTION);
|
---|
527 |
|
---|
528 | String[] tableNames = { "", "1table_allCrawledSites", "2table_sitesWithPagesInMRI"};
|
---|
529 | for (int tableNum = 1; tableNum < tableNames.length; tableNum++) {
|
---|
530 | File outFile = new File(outFolder, tableNames[tableNum] + ".json");
|
---|
531 | File csvFile = new File(outFolder, tableNames[tableNum] + ".csv");
|
---|
532 | try (
|
---|
533 | Writer writer = new BufferedWriter(new FileWriter(outFile));
|
---|
534 | CSVPrinter csvWriter = new CSVPrinter(new FileWriter(csvFile), CSVFormat.DEFAULT);
|
---|
535 | ) {
|
---|
536 |
|
---|
537 | // Write out the CSV column headings
|
---|
538 | // https://commons.apache.org/proper/commons-csv/apidocs/org/apache/commons/csv/CSVPrinter.html
|
---|
539 | csvWriter.printRecord("countryCode", "siteCount",
|
---|
540 | "numPagesInMRI count","numPagesContainingMRICount"/*, "domain"*/);
|
---|
541 |
|
---|
542 | AggregateIterable<Document> output = getTable(collection, tableNum); //doTable1().forEach((Block<Document>)doc -> writeDoc(doc, writer));
|
---|
543 |
|
---|
544 | int docNum = 0;
|
---|
545 | for (Document doc : output) {
|
---|
546 | //System.out.println(doc);
|
---|
547 | writeDocAsJsonRecord(++docNum, doc, writer);
|
---|
548 | writeDocAsCSVRecord(++docNum, doc, csvWriter);
|
---|
549 | }
|
---|
550 | logger.info("@@@ Wrote out table into file: " + Utility.getFilePath(outFile) + " and .csv");
|
---|
551 | } catch(UncheckedIOException ioe) {
|
---|
552 | logger.error("Caught UncheckedIOException: " + ioe.getMessage(), ioe);
|
---|
553 | }
|
---|
554 | catch(Exception e) {
|
---|
555 | logger.error("Could not write table to file " + outFile + " or .csv equivalent" , e);
|
---|
556 | }
|
---|
557 | }
|
---|
558 | }
|
---|
559 |
|
---|
560 | public AggregateIterable<Document> getTable(MongoCollection<Document> collection, int tableNum) {
|
---|
561 |
|
---|
562 | AggregateIterable<Document> output = null;
|
---|
563 |
|
---|
564 | switch(tableNum) {
|
---|
565 |
|
---|
566 | case 1:
|
---|
567 | /* 1table_allCrawledSites -
|
---|
568 |
|
---|
569 | db.Websites.aggregate([
|
---|
570 | { $unwind: "$geoLocationCountryCode" },
|
---|
571 | {
|
---|
572 | $group: {
|
---|
573 | _id: "$geoLocationCountryCode",
|
---|
574 | count: { $sum: 1 },
|
---|
575 | //domain: { $addToSet: '$domain' },
|
---|
576 | numPagesInMRICount: { $sum: '$numPagesInMRI' },
|
---|
577 | numPagesContainingMRICount: { $sum: '$numPagesContainingMRI' }
|
---|
578 | }
|
---|
579 | },
|
---|
580 | { $sort : { count : -1} }
|
---|
581 | ]);
|
---|
582 | */
|
---|
583 | output = collection.aggregate(Arrays.asList(
|
---|
584 | //match(BasicDBObject.parse("{urlContainsLangCodeInPath:true}")),
|
---|
585 | unwind("$geoLocationCountryCode"),
|
---|
586 | group("$geoLocationCountryCode", Arrays.asList(
|
---|
587 | sum("count", 1),
|
---|
588 | /*addToSet("domain", "$domain"),*/
|
---|
589 | sum("numPagesInMRICount", "$numPagesInMRI"),
|
---|
590 | sum("numPagesContainingMRICount", "$numPagesContainingMRI"))),
|
---|
591 | sort(BasicDBObject.parse("{count : -1}"))
|
---|
592 | ));
|
---|
593 | break;
|
---|
594 |
|
---|
595 | case 2:
|
---|
596 | /*
|
---|
597 | db.Websites.aggregate([
|
---|
598 | { $match: { numPagesInMRI: {$gt: 0} } },
|
---|
599 | { $unwind: "$geoLocationCountryCode" },
|
---|
600 | {
|
---|
601 | $group: {
|
---|
602 | _id: {$toLower: '$geoLocationCountryCode'}, // ignore toLower
|
---|
603 | count: { $sum: 1 },
|
---|
604 | //domain: { $addToSet: '$domain' },
|
---|
605 | numPagesInMRICount: { $sum: '$numPagesInMRI' },
|
---|
606 | numPagesContainingMRICount: { $sum: '$numPagesContainingMRI' }
|
---|
607 | }
|
---|
608 | },
|
---|
609 | { $sort : { count : -1} }
|
---|
610 | ]);
|
---|
611 | */
|
---|
612 | output = collection.aggregate(Arrays.asList(
|
---|
613 | match(BasicDBObject.parse("{ numPagesInMRI: {$gt: 0} }")),
|
---|
614 | unwind("$geoLocationCountryCode"),
|
---|
615 | group("$geoLocationCountryCode", Arrays.asList(
|
---|
616 | sum("count", 1),
|
---|
617 | /*addToSet("domain", "$domain"),*/
|
---|
618 | sum("numPagesInMRICount", "$numPagesInMRI"),
|
---|
619 | sum("numPagesContainingMRICount", "$numPagesContainingMRI"))),
|
---|
620 | sort(BasicDBObject.parse("{count : -1}"))
|
---|
621 | ));
|
---|
622 | break;
|
---|
623 |
|
---|
624 | default: logger.error("Unknown table number: " + tableNum);
|
---|
625 |
|
---|
626 | }
|
---|
627 |
|
---|
628 | return output;
|
---|
629 |
|
---|
630 | }
|
---|
631 |
|
---|
632 |
|
---|
633 |
|
---|
634 | /**
|
---|
635 | * called by lambda forEach() call on Document objects to write them out to a file.
|
---|
636 | * Have to deal with unreported exceptions here that can't be dealt with when doing
|
---|
637 | * the actual forEach(). See
|
---|
638 | * https://stackoverflow.com/questions/39090292/how-to-cleanly-deal-with-unreported-exception-ioexception-in-stream-foreach
|
---|
639 | */
|
---|
640 | public void writeDoc(Document doc, Writer writer) throws UncheckedIOException {
|
---|
641 | //OLD WAY: writer.write(doc.toJson(new JsonWriterSettings(JsonMode.STRICT, true)) + NEWLINE);
|
---|
642 | // Can't control json output to add newlines after each array element,
|
---|
643 | // no matter which JsonMode is used.
|
---|
644 |
|
---|
645 | // https://mongodb.github.io/mongo-java-driver/3.9/javadoc/index.html?org/bson/json/JsonWriterSettings.html
|
---|
646 | // Still can't control array element output,
|
---|
647 | // but this way uses newer mongo java driver 3.9(.1). Tried its various JsonModes too:
|
---|
648 | //JsonWriterSettings writeSettings = new JsonWriterSettings();
|
---|
649 | //writeSettings.builder().outputMode(JsonMode.SHELL).indent(true).build();
|
---|
650 | //writer.write(doc.toJson(writeSettings) + NEWLINE);
|
---|
651 |
|
---|
652 | // Not the JsonWriter of mongodb java driver:
|
---|
653 | // https://stackoverflow.com/questions/54746814/jsonwriter-add-a-new-line
|
---|
654 |
|
---|
655 | // Have to use gson's pretty print to produce a json string that contains
|
---|
656 | // newlines after every array element in the json:
|
---|
657 | String jsonStr = prettyPrintJson(doc.toJson());
|
---|
658 | //System.err.println(jsonStr);
|
---|
659 | try {
|
---|
660 | writer.write(jsonStr + NEWLINE);
|
---|
661 | } catch (IOException ex) {
|
---|
662 | //throw ex;
|
---|
663 | throw new UncheckedIOException(ex);
|
---|
664 | }
|
---|
665 | }
|
---|
666 |
|
---|
667 | public void writeDocAsJsonRecord(int docNum, Document doc, Writer writer) throws UncheckedIOException {
|
---|
668 | String jsonStr = prettyPrintJson(doc.toJson());
|
---|
669 | //System.err.println(jsonStr);
|
---|
670 | try {
|
---|
671 | writer.write("/* " + docNum + " */\n" + jsonStr + NEWLINE);
|
---|
672 | } catch (IOException ex) {
|
---|
673 | //throw ex;
|
---|
674 | throw new UncheckedIOException(ex);
|
---|
675 | }
|
---|
676 | }
|
---|
677 |
|
---|
678 | // TODO
|
---|
679 | //public void writeDocToJsonAndCSV(int docNum, Document doc, Writer writer, CSVPrinter csvWriter) throws UncheckedIOException {
|
---|
680 | public void writeDocAsCSVRecord(int docNum, Document doc, CSVPrinter csvWriter) throws UncheckedIOException {
|
---|
681 | String jsonStr = doc.toJson();
|
---|
682 | JsonParser parser = new JsonParser();
|
---|
683 | JsonElement json = parser.parse(jsonStr);
|
---|
684 |
|
---|
685 | JsonObject jsonObj = (JsonObject)json;
|
---|
686 |
|
---|
687 | String countryCode = jsonObj.get("_id").getAsString();
|
---|
688 | int siteCount = jsonObj.get("count").getAsInt();
|
---|
689 | int numPagesInMRICount = jsonObj.get("numPagesInMRICount").getAsInt();
|
---|
690 | int numPagesContainingMRICount = jsonObj.get("numPagesContainingMRICount").getAsInt();
|
---|
691 |
|
---|
692 | //System.err.println(jsonStr);
|
---|
693 | try {
|
---|
694 | //writer.write("/* " + docNum + " */\n" + prettyPrintJson(jsonStr) + NEWLINE);
|
---|
695 | csvWriter.printRecord(countryCode, siteCount, numPagesInMRICount, numPagesContainingMRICount);
|
---|
696 | } catch (IOException ex) {
|
---|
697 | //throw ex;
|
---|
698 | throw new UncheckedIOException(ex);
|
---|
699 | }
|
---|
700 | }
|
---|
701 |
|
---|
702 | public String prettyPrintJson(String jsonStr) {
|
---|
703 | Gson gson = new GsonBuilder().setPrettyPrinting().create();
|
---|
704 | JsonParser jp = new JsonParser();
|
---|
705 | JsonElement je = jp.parse(jsonStr);
|
---|
706 | String prettyJsonString = gson.toJson(je);
|
---|
707 | return prettyJsonString;
|
---|
708 | }
|
---|
709 |
|
---|
710 |
|
---|
711 | /** https://stackoverflow.com/questions/19938153/do-i-need-to-explicitly-close-connection */
|
---|
712 | public void close() {}
|
---|
713 |
|
---|
714 |
|
---|
715 | // TODO:
|
---|
716 | // In the database, need to ensure we have else
|
---|
717 | // create collection (table in RDBMS) websites, create collection webpages.
|
---|
718 | // The webpages collection will have sentences embedded based on my decisions from
|
---|
719 | // reading the series
|
---|
720 | // https://www.mongodb.com/blog/post/6-rules-of-thumb-for-mongodb-schema-design-part-1
|
---|
721 | // Then need functions:
|
---|
722 | // insertWebsiteDocument()
|
---|
723 | // insertWebpageDocument()
|
---|
724 |
|
---|
725 | public static void main(String args[]) {
|
---|
726 | try {
|
---|
727 | MongoDBAccess mongodbCon = new MongoDBAccess();
|
---|
728 | mongodbCon.connectToDB();
|
---|
729 | mongodbCon.showCollections();
|
---|
730 |
|
---|
731 | } catch(Exception e) {
|
---|
732 | e.printStackTrace();
|
---|
733 | }
|
---|
734 | }
|
---|
735 | }
|
---|