Mercurial > browser-couch

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/big.html	Mon Apr 13 14:51:05 2009 -0700
@@ -0,0 +1,19 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+          "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+  <meta http-equiv="Content-type" content="text/html; charset=utf-8" />
+  <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+          "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+  <link rel="stylesheet" type="text/css" media="all"
+        href="index.css" />
+  <title>Browser Big Couch Test</title>
+</head>
+<body>
+<h1>Browser Big Couch Test</h1>
+<div id="status">
+</div>
+</body>
+<script src="browser-couch.js"></script>
+<script src="big.js"></script>
+</html>
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/big.js	Mon Apr 13 14:51:05 2009 -0700
@@ -0,0 +1,94 @@
+var MAX_WORD_LENGTH = 10;
+var LEXICON_SIZE = 200;
+var MIN_DOCUMENT_LENGTH = 250;
+var MAX_DOCUMENT_LENGTH = 500;
+var CORPUS_SIZE = 100;
+
+// Returns a random integer between min and max
+// Using Math.round() will give you a non-uniform distribution!
+function getRandomInt(min, max)
+{
+  return Math.floor(Math.random() * (max - min + 1)) + min;
+}
+
+function makeRandomWord() {
+  var word = "";
+  var len = getRandomInt(1, MAX_WORD_LENGTH);
+  for (var i = 0; i < len; i++) {
+    var charCode = getRandomInt("a".charCodeAt(0),
+                                "z".charCodeAt(0));
+    var letter = String.fromCharCode(charCode);
+    word += letter;
+  }
+  return word;
+}
+
+function makeLexicon() {
+  var lexicon = [];
+
+  for (var i = 0; i < LEXICON_SIZE; i++)
+    lexicon.push(makeRandomWord());
+
+  return lexicon;
+}
+
+function makeDocument(lexicon) {
+  var len = getRandomInt(MIN_DOCUMENT_LENGTH,
+                         MAX_DOCUMENT_LENGTH);
+  var doc = [];
+
+  for (var i = 0; i < len; i++) {
+    var wordIndex = getRandomInt(0, lexicon.length);
+    doc.push(lexicon[wordIndex]);
+  }
+
+  return doc.join(" ");
+}
+
+function makeCorpus(db, cb) {
+  var lexicon = makeLexicon();
+  var docs = [];
+
+  for (var i = 0; i < CORPUS_SIZE; i++)
+    docs.push({id: i,
+               content: makeDocument(lexicon)});
+
+  db.put(docs, cb);
+}
+
+BrowserCouch.get(
+  "big",
+  function(db) {
+    var status = document.getElementById("status");
+    if (db.getLength() == 0) {
+      status.textContent = "Building new corpus.";
+      db.wipe(function() { makeCorpus(db, run); });
+    } else
+      run();
+
+    function run() {
+      db.view(
+        {map: function(doc, emit) {
+                 var words = doc.content.split(" ");
+                 for (var i = 0; i < words.length; i++)
+                   emit(words[i], 1);
+         },
+         reduce: function(keys, values) {
+           var sum = 0;
+           for (var i = 0; i < values.length; i++)
+             sum += values[i];
+           return sum;
+         },
+         chunkSize: 5,
+         progress: function(phase, percent, resume) {
+           percent = Math.floor(percent * 100);
+           var msg = phase + " (" + percent + "%)";
+           status.textContent = msg;
+           window.setTimeout(resume, 5);
+         },
+         finished: function(result) {
+           status.textContent = "Done.";
+         }}
+      );
+    }
+  });