From 1e3c76c56eccd9010f99c8daddd1a8ab31cb83db Mon Sep 17 00:00:00 2001
From: Egil Moeller <egil.moller@freecode.no>
Date: Mon, 12 Apr 2010 19:32:00 +0200
Subject: Separated the twitterStyleTags model stuff out in a separate file

---
 .../twitterStyleTags/controllers/tagBrowser.js     | 169 +------------------
 .../plugins/twitterStyleTags/models/tagQuery.js    | 182 +++++++++++++++++++++
 .../twitterStyleTags/templates/tagBrowser.ejs      |  12 +-
 3 files changed, 193 insertions(+), 170 deletions(-)
 create mode 100644 etherpad/src/plugins/twitterStyleTags/models/tagQuery.js

diff --git a/etherpad/src/plugins/twitterStyleTags/controllers/tagBrowser.js b/etherpad/src/plugins/twitterStyleTags/controllers/tagBrowser.js
index 7071306..838fb24 100644
--- a/etherpad/src/plugins/twitterStyleTags/controllers/tagBrowser.js
+++ b/etherpad/src/plugins/twitterStyleTags/controllers/tagBrowser.js
@@ -15,6 +15,8 @@
  * limitations under the License.
  */
 
+import("plugins.twitterStyleTags.models.tagQuery");
+
 import("faststatic");
 import("dispatch.{Dispatcher,PrefixMatcher,forward}");
 
@@ -31,167 +33,6 @@ import("sqlbase.sqlcommon");
 import("sqlbase.sqlobj");
 import("etherpad.pad.padutils");
 
-function tagsToQuery(tags, antiTags) {
- var prefixed = [];
- for (i = 0; i < antiTags.length; i++)
-  prefixed[i] = '!' + antiTags[i];
- return tags.concat(prefixed).join(',');
-}
-
-function stringFormat(text, obj) {
-  var name;
-  for (name in obj) {
-    //iterate through the params and replace their placeholders from the original text
-    text = text.replace(new RegExp('%\\(' + name + '\\)s', 'gi' ), obj[name]);
-  }
-  return text;
-}
-
-/* All these sql query functions both takes a querySql object as
- * parameter and returns one. This object has two members - sql and
- * params. Sql is a string of an sql table name or a subqyery in
- * parens. The table pr subquery should have an ID column containing a
- * PAD_ID.
- */
-
-/* Filters pads by tags and anti-tags */
-function getQueryToSql(tags, antiTags, querySql) {
-  var queryTable;
-  var queryParams;
-
-  if (querySql == null) {
-    queryTable = 'PAD_META';
-    queryParams = [];
-  } else {
-    queryTable = querySql.sql;
-    queryParams = querySql.params;
-  }
-
-  var exceptArray = [];
-  var joinArray = [];
-  var whereArray = [];
-  var exceptParamArray = [];
-  var joinParamArray = [];
-
-  var info = new Object();
-  info.queryTable = queryTable;
-  info.n = 0;
-  var i;
-
-  for (i = 0; i < antiTags.length; i++) {
-    tag = antiTags[i];
-    exceptArray.push(
-     stringFormat(
-      'left join (PAD_TAG as pt%(n)s ' +
-      '	      join TAG AS t%(n)s on ' +
-      '	       t%(n)s.NAME = ? ' +
-      '	       and t%(n)s.ID = pt%(n)s.TAG_ID) on ' +
-      ' pt%(n)s.PAD_ID = p.ID ',
-      info));
-    whereArray.push(stringFormat('pt%(n)s.TAG_ID is null', info));
-    exceptParamArray.push(tag);
-    info.n += 1;
-  }
-  for (i = 0; i < tags.length; i++) {
-    tag = tags[i];
-    joinArray.push(
-     stringFormat(
-      'join PAD_TAG as pt%(n)s on ' +
-      ' pt%(n)s.PAD_ID = p.ID ' +
-      'join TAG as t%(n)s on ' +
-      ' t%(n)s.ID = pt%(n)s.TAG_ID ' +
-      ' and t%(n)s.NAME = ? ',
-      info));
-    joinParamArray.push(tag);
-    info.n += 1;
-  }
-
-  info["joins"] = joinArray.join(' ');
-  info["excepts"] = exceptArray.join(' ');
-  info["wheres"] = whereArray.length > 0 ? ' where ' + whereArray.join(' and ') : '';
- 
-  /* Create a subselect from all the joins */ 
-  return {
-   sql: stringFormat(
-    '(select distinct ' +
-    '  p.ID ' +
-    ' from ' +
-    '  %(queryTable)s as p ' +
-    '  %(joins)s ' +
-    '  %(excepts)s ' +
-    ' %(wheres)s ' +
-    ') ',
-    info),
-   params: queryParams.concat(joinParamArray).concat(exceptParamArray)};
-}
-
-/* Returns the sql to count the number of results from some other
- * query. */
-function nrSql(querySql) {
-  var queryTable;
-  var queryParams;
-
-  if (querySql == null) {
-    queryTable = 'PAD_META';
-    queryParams = [];
-  } else {
-    queryTable = querySql.sql;
-    queryParams = querySql.params;
-  }
-
-  var info = [];
-  info['query_sql'] = queryTable
-  return {
-   sql: stringFormat('(select count(*) as total from %(query_sql)s as q)', info),
-   params: queryParams};
-}
-
-/* Returns the sql to select the 10 best new tags to tack on to a
- * query, that is, the tags that are closest to halving the result-set
- * if tacked on. */
-function newTagsSql(querySql) {
-  var queryTable;
-  var queryParams;
-
-  if (querySql == null) {
-    queryTable = 'PAD_META';
-    queryParams = [];
-  } else {
-    queryTable = querySql.sql;
-    queryParams = querySql.params;
-  }
-
-  var info = [];
-  info["query_post_table"] = queryTable;
-  var queryNrSql = nrSql(querySql);
-  info["query_nr_sql"] = queryNrSql.sql;
-  queryNrParams = queryNrSql.params;
-
-  return {
-   sql: stringFormat('' +
-    'select ' +
-    ' t.NAME tagname, ' +
-    ' count(tp.PAD_ID) as matches, ' +
-    ' tn.total - count(tp.PAD_ID) as antimatches, ' +
-    ' abs(count(tp.PAD_ID) - (tn.total / 2)) as weight ' +
-    'from ' +
-    ' TAG as t, ' +
-    ' PAD_TAG as tp, ' +
-    ' %(query_nr_sql)s as tn ' +
-    'where ' +
-    ' tp.TAG_ID = t.ID ' +
-    ' and tp.PAD_ID in %(query_post_table)s ' +
-    ' and tp.PAD_ID NOT LIKE \'%$%\'' +
-    'group by t.NAME, tn.total ' +
-    'having ' +
-    ' count(tp.PAD_ID) > 0 and count(tp.PAD_ID) < tn.total ' +
-    'order by ' +
-    ' abs(count(tp.PAD_ID) - (tn.total / 2)) asc ' +
-    'limit 10 ' +
-    '', info),
-   params: queryNrParams.concat(queryParams)};
-}
-
 
 function onRequest() {  
   var tags = new Array();
@@ -207,10 +48,10 @@ function onRequest() {
   }
 
   /* Create the pad filter sql */
-  var querySql = getQueryToSql(tags.concat(['public']), antiTags);
+  var querySql = tagQuery.getQueryToSql(tags.concat(['public']), antiTags);
 
   /* Use the pad filter sql to figure out which tags to show in the tag browser this time. */
-  var queryNewTagsSql = newTagsSql(querySql);
+  var queryNewTagsSql = tagQuery.newTagsSql(querySql);
   var newTags = sqlobj.executeRaw(queryNewTagsSql.sql, queryNewTagsSql.params);
 
   /* Select the 10 last changed matching pads and some extra information on them. Except the Pro Pads*/ 
@@ -260,7 +101,7 @@ function onRequest() {
   var info = {
     prefs: prefs,
     config: appjet.config,
-    tagsToQuery: tagsToQuery,
+    tagQuery: tagQuery,
     padIdToReadonly: server_utils.padIdToReadonly,
     tags: tags,
     antiTags: antiTags,
diff --git a/etherpad/src/plugins/twitterStyleTags/models/tagQuery.js b/etherpad/src/plugins/twitterStyleTags/models/tagQuery.js
new file mode 100644
index 0000000..a2e8374
--- /dev/null
+++ b/etherpad/src/plugins/twitterStyleTags/models/tagQuery.js
@@ -0,0 +1,182 @@
+/**
+ * Copyright 2010 RedHog, Egil Möller <egil.moller@piratpartiet.se>
+ * Copyright 2010 Pita, Peter Martischka <petermartischka@googlemail.com>
+ * 
+ * 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 at
+ * 
+ *      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.
+ */
+
+import("sqlbase.sqlbase");
+import("sqlbase.sqlcommon");
+import("sqlbase.sqlobj");
+import("etherpad.log");
+
+function tagsToQuery(tags, antiTags) {
+ var prefixed = [];
+ for (i = 0; i < antiTags.length; i++)
+  prefixed[i] = '!' + antiTags[i];
+ return tags.concat(prefixed).join(',');
+}
+
+function stringFormat(text, obj) {
+  var name;
+  for (name in obj) {
+    //iterate through the params and replace their placeholders from the original text
+    text = text.replace(new RegExp('%\\(' + name + '\\)s', 'gi' ), obj[name]);
+  }
+  return text;
+}
+
+/* All these sql query functions both takes a querySql object as
+ * parameter and returns one. This object has two members - sql and
+ * params. Sql is a string of an sql table name or a subqyery in
+ * parens. The table pr subquery should have an ID column containing a
+ * PAD_ID.
+ */
+
+/* Filters pads by tags and anti-tags */
+function getQueryToSql(tags, antiTags, querySql) {
+  var queryTable;
+  var queryParams;
+
+  if (querySql == null) {
+    queryTable = 'PAD_META';
+    queryParams = [];
+  } else {
+    queryTable = querySql.sql;
+    queryParams = querySql.params;
+  }
+
+  var exceptArray = [];
+  var joinArray = [];
+  var whereArray = [];
+  var exceptParamArray = [];
+  var joinParamArray = [];
+
+  var info = new Object();
+  info.queryTable = queryTable;
+  info.n = 0;
+  var i;
+
+  for (i = 0; i < antiTags.length; i++) {
+    tag = antiTags[i];
+    exceptArray.push(
+     stringFormat(
+      'left join (PAD_TAG as pt%(n)s ' +
+      '	      join TAG AS t%(n)s on ' +
+      '	       t%(n)s.NAME = ? ' +
+      '	       and t%(n)s.ID = pt%(n)s.TAG_ID) on ' +
+      ' pt%(n)s.PAD_ID = p.ID ',
+      info));
+    whereArray.push(stringFormat('pt%(n)s.TAG_ID is null', info));
+    exceptParamArray.push(tag);
+    info.n += 1;
+  }
+  for (i = 0; i < tags.length; i++) {
+    tag = tags[i];
+    joinArray.push(
+     stringFormat(
+      'join PAD_TAG as pt%(n)s on ' +
+      ' pt%(n)s.PAD_ID = p.ID ' +
+      'join TAG as t%(n)s on ' +
+      ' t%(n)s.ID = pt%(n)s.TAG_ID ' +
+      ' and t%(n)s.NAME = ? ',
+      info));
+    joinParamArray.push(tag);
+    info.n += 1;
+  }
+
+  info["joins"] = joinArray.join(' ');
+  info["excepts"] = exceptArray.join(' ');
+  info["wheres"] = whereArray.length > 0 ? ' where ' + whereArray.join(' and ') : '';
+ 
+  /* Create a subselect from all the joins */ 
+  return {
+   sql: stringFormat(
+    '(select distinct ' +
+    '  p.ID ' +
+    ' from ' +
+    '  %(queryTable)s as p ' +
+    '  %(joins)s ' +
+    '  %(excepts)s ' +
+    ' %(wheres)s ' +
+    ') ',
+    info),
+   params: queryParams.concat(joinParamArray).concat(exceptParamArray)};
+}
+
+/* Returns the sql to count the number of results from some other
+ * query. */
+function nrSql(querySql) {
+  var queryTable;
+  var queryParams;
+
+  if (querySql == null) {
+    queryTable = 'PAD_META';
+    queryParams = [];
+  } else {
+    queryTable = querySql.sql;
+    queryParams = querySql.params;
+  }
+
+  var info = [];
+  info['query_sql'] = queryTable
+  return {
+   sql: stringFormat('(select count(*) as total from %(query_sql)s as q)', info),
+   params: queryParams};
+}
+
+/* Returns the sql to select the 10 best new tags to tack on to a
+ * query, that is, the tags that are closest to halving the result-set
+ * if tacked on. */
+function newTagsSql(querySql) {
+  var queryTable;
+  var queryParams;
+
+  if (querySql == null) {
+    queryTable = 'PAD_META';
+    queryParams = [];
+  } else {
+    queryTable = querySql.sql;
+    queryParams = querySql.params;
+  }
+
+  var info = [];
+  info["query_post_table"] = queryTable;
+  var queryNrSql = nrSql(querySql);
+  info["query_nr_sql"] = queryNrSql.sql;
+  queryNrParams = queryNrSql.params;
+
+  return {
+   sql: stringFormat('' +
+    'select ' +
+    ' t.NAME tagname, ' +
+    ' count(tp.PAD_ID) as matches, ' +
+    ' tn.total - count(tp.PAD_ID) as antimatches, ' +
+    ' abs(count(tp.PAD_ID) - (tn.total / 2)) as weight ' +
+    'from ' +
+    ' TAG as t, ' +
+    ' PAD_TAG as tp, ' +
+    ' %(query_nr_sql)s as tn ' +
+    'where ' +
+    ' tp.TAG_ID = t.ID ' +
+    ' and tp.PAD_ID in %(query_post_table)s ' +
+    ' and tp.PAD_ID NOT LIKE \'%$%\'' +
+    'group by t.NAME, tn.total ' +
+    'having ' +
+    ' count(tp.PAD_ID) > 0 and count(tp.PAD_ID) < tn.total ' +
+    'order by ' +
+    ' abs(count(tp.PAD_ID) - (tn.total / 2)) asc ' +
+    'limit 10 ' +
+    '', info),
+   params: queryNrParams.concat(queryParams)};
+}
diff --git a/etherpad/src/plugins/twitterStyleTags/templates/tagBrowser.ejs b/etherpad/src/plugins/twitterStyleTags/templates/tagBrowser.ejs
index 955d2e6..1dddce7 100644
--- a/etherpad/src/plugins/twitterStyleTags/templates/tagBrowser.ejs
+++ b/etherpad/src/plugins/twitterStyleTags/templates/tagBrowser.ejs
@@ -18,7 +18,7 @@ limitations under the License. */ %>
  helpers.setHtmlTitle("EtherPad: Browse tags");
  helpers.includeCss("plugins/twitterStyleTags/tagBrowser.css");
  helpers.includeCss("plugins/twitterStyleTags/pad.css");
- helpers.addToHead('\n<link rel="alternate" href="/ep/tag/?query=' + tagsToQuery(tags, antiTags) + '&format=rss" type="application/rss+xml" title="Query results as RSS" />\n');
+ helpers.addToHead('\n<link rel="alternate" href="/ep/tag/?query=' + tagQuery.tagsToQuery(tags, antiTags) + '&format=rss" type="application/rss+xml" title="Query results as RSS" />\n');
 
  function inArray(item, arr) {
    for (var i = 0; i < arr.length; i++)
@@ -59,10 +59,10 @@ limitations under the License. */ %>
       Latest changed pads
     <% } else { %>
       <% for (i = 0; i < tags.length; i++) { %>
-	<a href="/ep/tag/?query=<%= tagsToQuery(tags.filter(function (tag) { return tag != tags[i]}), antiTags) %>" class="padtag" title="<%= tags[i] %> matches">#<%= tags[i] %></a>
+	<a href="/ep/tag/?query=<%= tagQuery.tagsToQuery(tags.filter(function (tag) { return tag != tags[i]}), antiTags) %>" class="padtag" title="<%= tags[i] %> matches">#<%= tags[i] %></a>
       <% } %>
       <% for (i = 0; i < antiTags.length; i++) { %>
-	<a href="/ep/tag/?query=<%= tagsToQuery(tags, antiTags.filter(function (tag) { return tag != antiTags[i]})) %>" class="anti_padtag" title="<%= antiTags[i] %> matches">!#<%= antiTags[i] %></a>
+	<a href="/ep/tag/?query=<%= tagQuery.tagsToQuery(tags, antiTags.filter(function (tag) { return tag != antiTags[i]})) %>" class="anti_padtag" title="<%= antiTags[i] %> matches">!#<%= antiTags[i] %></a>
       <% } %>
     <% } %>
   </td>
@@ -73,12 +73,12 @@ limitations under the License. */ %>
    <div class="query-refiner">
     <h1>Search for pads that have the tag</h1>
     <% for (i = 0; i < newTags.length; i++) { %>
-     <a href="/ep/tag/?query=<%= tagsToQuery(tags.concat([newTags[i].tagname]),antiTags) %>" class="padtag" title="<%= newTags[i].matches %> matches">#<%= newTags[i].tagname %></a>
+     <a href="/ep/tag/?query=<%= tagQuery.tagsToQuery(tags.concat([newTags[i].tagname]),antiTags) %>" class="padtag" title="<%= newTags[i].matches %> matches">#<%= newTags[i].tagname %></a>
     <% } %>
 
     <h1>Search for pads that <em>don't</em> have the tag</h1>
     <% for (i = 0; i < newTags.length; i++) { %>
-     <a href="/ep/tag/?query=<%= tagsToQuery(tags,antiTags.concat([newTags[i].tagname])) %>" class="anti_padtag" title="<%= newTags[i].antimatches %> matches">!#<%= newTags[i].tagname %></a>
+     <a href="/ep/tag/?query=<%= tagQuery.tagsToQuery(tags,antiTags.concat([newTags[i].tagname])) %>" class="anti_padtag" title="<%= newTags[i].antimatches %> matches">!#<%= newTags[i].tagname %></a>
     <% } %>
    </div>
 
@@ -95,7 +95,7 @@ limitations under the License. */ %>
      <dt><a href="/<%= matchingPadUrl %>"><%= matchingPadId %></a><dt>
      <dd>
       <% for (j = 0; j < matchingPads[i].TAGS.length; j++) { %>
-       <a href="/ep/tag/?query=<%= tagsToQuery(tags.concat([matchingPads[i].TAGS[j]]), antiTags) %>" class="padtag" title="<%= matchingPads[i].TAGS[j] %> matches">#<%= matchingPads[i].TAGS[j] %></a>
+       <a href="/ep/tag/?query=<%= tagQuery.tagsToQuery(tags.concat([matchingPads[i].TAGS[j]]), antiTags) %>" class="padtag" title="<%= matchingPads[i].TAGS[j] %> matches">#<%= matchingPads[i].TAGS[j] %></a>
       <% } %>
      </dd>
     <% } %>
-- 
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