| /* |
| * Copyright 2009-2013 by The Regents of the University of California |
| * 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 from |
| * |
| * 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 edu.uci.ics.hyracks.storage.am.common.datagen; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Random; |
| |
| public class PersonNameFieldValueGenerator implements IFieldValueGenerator<String> { |
| private final String FIRST_NAMES_FILE = "dist.all.first.cleaned"; |
| private final String LAST_NAMES_FILE = "dist.all.last.cleaned"; |
| |
| private final Random rnd; |
| private final double middleInitialProb; |
| private final String letters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; |
| |
| private List<String> firstNames = new ArrayList<String>(); |
| private List<String> lastNames = new ArrayList<String>(); |
| |
| public PersonNameFieldValueGenerator(Random rnd, double middleInitialProb) |
| throws IOException { |
| this.rnd = rnd; |
| this.middleInitialProb = middleInitialProb; |
| initNames(); |
| } |
| |
| private void initNames() throws IOException { |
| String line; |
| |
| // Read first names from data file. |
| InputStream firstNamesIn = this.getClass().getClassLoader().getResourceAsStream(FIRST_NAMES_FILE); |
| BufferedReader firstNamesReader = new BufferedReader(new InputStreamReader(firstNamesIn)); |
| try { |
| while ((line = firstNamesReader.readLine()) != null) { |
| firstNames.add(line.trim()); |
| } |
| } finally { |
| firstNamesReader.close(); |
| } |
| |
| // Read last names from data file. |
| InputStream lastNamesIn = this.getClass().getClassLoader().getResourceAsStream(LAST_NAMES_FILE); |
| BufferedReader lastNamesReader = new BufferedReader(new InputStreamReader(lastNamesIn)); |
| try { |
| while ((line = lastNamesReader.readLine()) != null) { |
| lastNames.add(line.trim()); |
| } |
| } finally { |
| lastNamesReader.close(); |
| } |
| } |
| |
| @Override |
| public String next() { |
| StringBuilder strBuilder = new StringBuilder(); |
| |
| // First name. |
| int fix = Math.abs(rnd.nextInt()) % firstNames.size(); |
| strBuilder.append(firstNames.get(fix)); |
| strBuilder.append(" "); |
| |
| // Optional middle initial. |
| double d = Math.abs(rnd.nextDouble()); |
| if (d <= middleInitialProb) { |
| int mix = Math.abs(rnd.nextInt()) % letters.length(); |
| strBuilder.append(letters.charAt(mix)); |
| strBuilder.append(". "); |
| } |
| |
| // Last name. |
| int lix = Math.abs(rnd.nextInt()) % lastNames.size(); |
| strBuilder.append(lastNames.get(lix)); |
| |
| return strBuilder.toString(); |
| } |
| |
| @Override |
| public void reset() { |
| } |
| } |