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1
9
10 package org.dom4j.samples.performance;
11
12 import java.io.BufferedReader  ;
13 import java.io.FileReader ;
14 import java.io.StringReader ;
15
16 import org.dom4j.Document;
17 import org.dom4j.io.SAXReader;
18
19
25 public class ParseLoop {
26
27 private static int bufferSize = 128 * 1024;
28
29 public static void main(String [] args) throws Exception {
30 if (args.length <= 0) {
31 System.out.println("arguments: <XML file> [<loopCount>]");
32 return;
33 }
34 String xmlFile = args[0];
35 int loops = 40;
36 if (args.length > 1) {
37 loops = Integer.parseInt(args[1]);
38 }
39
40 StringBuffer buffer = new StringBuffer (64 * 1024);
41 BufferedReader reader = new BufferedReader (new FileReader (xmlFile));
42 while (true) {
43 String text = reader.readLine();
44 if (text == null) {
45 break;
46 }
47 buffer.append(text);
48 buffer.append("\n");
49 }
50 long start = System.currentTimeMillis();
51
52 parse(buffer.toString(), loops);
53
54 long elapsed = System.currentTimeMillis() - start;
55
56 System.out.println("Parsed: " + xmlFile + " " + loops + " times in: "
57 + elapsed + " (ms)");
58 }
59
60 protected static void parse(String text, int loops) throws Exception {
61 SAXReader xmlReader = new SAXReader();
62 for (int i = 0; i < loops; i++) {
63 Document document = xmlReader.read(new StringReader (text));
64 }
65 }
66 }
67
68
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