1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
package lq;
import java.io.File;
import java.io.IOException;
import java.util.Scanner;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.jdo.PersistenceManager;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.jdom.xpath.XPath;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.logging.Logger;
public class ImportQuotes extends HttpServlet {
private static final Logger logger = Logger.getLogger(ImportQuotes.class.getName());
private static final SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
private static final SimpleDateFormat timestampFormat =
new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws IOException {
String path = "db-dump.xml";
resp.setContentType("text/plain");
resp.getWriter().println("Trying to import quotes from " + path);
SAXBuilder builder = new SAXBuilder();
try {
Document document = builder.build(path);
Element root = document.getRootElement();
List quoteRows = XPath.selectNodes(root,
"//table_data[@name='quotes']/*");
List voteRows = XPath.selectNodes(root,
"//table_data[@name='votes']/*");
List<Quote> quotes = importQuotes(quoteRows);
List<Vote> votes = importVotes(quotes, voteRows);
PersistenceManager pm = PMF.get().getPersistenceManager();
try {
pm.makePersistentAll(quotes);
pm.makePersistentAll(votes);
}
finally {
pm.close();
}
} catch (Exception e) {
resp.getWriter().println("Failed to parse xml: " + e.toString());
e.printStackTrace();
}
}
private List<Quote> importQuotes(List quoteRows) throws Exception {
List<Quote> quotes = new ArrayList<Quote>();
for (Object row : quoteRows) {
@SuppressWarnings("unchecked")
Element elem = (Element) row;
quotes.add(importQuote(elem));
}
logger.info("Imported " + quotes.size() + " quotes");
return quotes;
}
private Quote importQuote(Element quoteRow) throws Exception {
Long id = Long.parseLong(getChildWithName("id", quoteRow));
String approvedString = getChildWithName("approved", quoteRow);
Boolean approved = approvedString.equals("1") ? true : false;
String name = getChildWithName("name", quoteRow);
String dateString = getChildWithName("date", quoteRow);
Date date = dateFormat.parse(dateString);
String content = getChildWithName("text", quoteRow);
String timeString = getChildWithName("time", quoteRow);
Date timestamp = timestampFormat.parse(timeString);
String ip = getChildWithName("ip", quoteRow);
Quote quote = new Quote(date, name, content, ip);
quote.setId(id);
quote.setTimestamp(timestamp);
quote.setApproved(approved);
return quote;
}
private List<Vote> importVotes(List<Quote> quotes, List voteRows) throws Exception {
List<Vote> votes = new ArrayList<Vote>();
for (Object row : voteRows) {
@SuppressWarnings("unchecked")
Element elem = (Element) row;
Vote vote = importVote(elem, quotes);
if (vote != null) {
votes.add(vote);
}
}
logger.info("Imported " + votes.size() + " votes");
return votes;
}
private Vote importVote(Element voteRow, List<Quote> quotes) throws Exception {
Long quoteId = Long.parseLong(getChildWithName("id", voteRow));
Quote quote = getQuoteWithId(quotes, quoteId);
if (quote == null) {
logger.warning("Could not find quote with id " + quoteId);
return null;
}
Long rating = Long.parseLong(getChildWithName("vote", voteRow));
Date timestamp = timestampFormat.parse(getChildWithName("time", voteRow));
String ip = getChildWithName("ip", voteRow);
Vote vote = new Vote(rating, ip);
vote.setTimestamp(timestamp);
quote.getVotes().add(vote);
return vote;
}
private String getChildWithName(String name, Element parent) throws Exception {
String xpath = "field[@name='" + name + "']";
Element child = (Element) XPath.selectSingleNode(parent, xpath);
return child.getValue();
}
private Quote getQuoteWithId(List<Quote> quotes, Long id) {
for (Quote quote : quotes) {
if (quote.getId().equals(id)) {
return quote;
}
}
throw new RuntimeException("Could not find quote.");
}
}
|
