master trunk of gnowsys-studio

1 files changed, 183 insertions, 0 deletions

diff --git a/gstudio/sitemaps.py b/gstudio/sitemaps.py
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+# Copyright (c) 2011,  2012 Free Software Foundation
+
+#     This program is free software: you can redistribute it and/or modify
+#     it under the terms of the GNU Affero General Public License as
+#     published by the Free Software Foundation, either version 3 of the
+#     License, or (at your option) any later version.
+
+#     This program is distributed in the hope that it will be useful,
+#     but WITHOUT ANY WARRANTY; without even the implied warranty of
+#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#     GNU Affero General Public License for more details.
+
+#     You should have received a copy of the GNU Affero General Public License
+#     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+# This project incorporates work covered by the following copyright and permission notice:  
+
+#    Copyright (c) 2009, Julien Fache
+#    All rights reserved.
+
+#    Redistribution and use in source and binary forms, with or without
+#    modification, are permitted provided that the following conditions
+#    are met:
+
+#    * Redistributions of source code must retain the above copyright
+#      notice, this list of conditions and the following disclaimer.
+#    * Redistributions in binary form must reproduce the above copyright
+#      notice, this list of conditions and the following disclaimer in
+#      the documentation and/or other materials provided with the
+#      distribution.
+#    * Neither the name of the author nor the names of other
+#      contributors may be used to endorse or promote products derived
+#      from this software without specific prior written permission.
+
+#    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+#    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+#    COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+#    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+#    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+#    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+#    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+#    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+#    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+#    OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+# Copyright (c) 2011,  2012 Free Software Foundation
+
+#     This program is free software: you can redistribute it and/or modify
+#     it under the terms of the GNU Affero General Public License as
+#     published by the Free Software Foundation, either version 3 of the
+#     License, or (at your option) any later version.
+
+#     This program is distributed in the hope that it will be useful,
+#     but WITHOUT ANY WARRANTY; without even the implied warranty of
+#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#     GNU Affero General Public License for more details.
+
+#     You should have received a copy of the GNU Affero General Public License
+#     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+
+"""Sitemaps for Gstudio"""
+from django.contrib.sitemaps import Sitemap
+from django.core.urlresolvers import reverse
+
+from tagging.models import TaggedItem
+
+from gstudio.models import Nodetype
+from gstudio.models import Author
+from gstudio.models import Metatype
+from gstudio.managers import tags_published
+
+
+class NodetypeSitemap(Sitemap):
+    """Sitemap for nodetypes"""
+    priority = 0.5
+    changefreq = 'weekly'
+
+    def items(self):
+        """Return published nodetypes"""
+        return Nodetype.published.all()
+
+    def lastmod(self, obj):
+        """Return last modification of a nodetype"""
+        return obj.last_update
+
+
+class MetatypeSitemap(Sitemap):
+    """Sitemap for metatypes"""
+    changefreq = 'monthly'
+
+    def cache(self, metatypes):
+        """Cache categorie's nodetypes percent on total nodetypes"""
+        len_nodetypes = float(Nodetype.published.count())
+        self.cache_metatypes = {}
+        for cat in metatypes:
+            if len_nodetypes:
+                self.cache_metatypes[cat.pk] = cat.nodetypes_published(
+                    ).count() / len_nodetypes
+            else:
+                self.cache_metatypes[cat.pk] = 0.0
+
+    def items(self):
+        """Return all metatypes with coeff"""
+        metatypes = Metatype.objects.all()
+        self.cache(metatypes)
+        return metatypes
+
+    def lastmod(self, obj):
+        """Return last modification of a metatype"""
+        nodetypes = obj.nodetypes_published()
+        if not nodetypes:
+            return None
+        return nodetypes[0].creation_date
+
+    def priority(self, obj):
+        """Compute priority with cached coeffs"""
+        priority = 0.5 + self.cache_metatypes[obj.pk]
+        if priority > 1.0:
+            priority = 1.0
+        return '%.1f' % priority
+
+
+class AuthorSitemap(Sitemap):
+    """Sitemap for authors"""
+    priority = 0.5
+    changefreq = 'monthly'
+
+    def items(self):
+        """Return published authors"""
+        return Author.published.all()
+
+    def lastmod(self, obj):
+        """Return last modification of an author"""
+        nodetypes = obj.nodetypes_published()
+        if not nodetypes:
+            return None
+        return nodetypes[0].creation_date
+
+    def location(self, obj):
+        """Return url of an author"""
+        return reverse('gstudio_author_detail', args=[obj.username])
+
+
+class TagSitemap(Sitemap):
+    """Sitemap for tags"""
+    changefreq = 'monthly'
+
+    def cache(self, tags):
+        """Cache tag's nodetypes percent on total nodetypes"""
+        len_nodetypes = float(Nodetype.published.count())
+        self.cache_tags = {}
+        for tag in tags:
+            nodetypes = TaggedItem.objects.get_by_model(
+                Nodetype.published.all(), tag)
+            self.cache_tags[tag.pk] = (nodetypes, nodetypes.count() / len_nodetypes)
+
+    def items(self):
+        """Return all tags with coeff"""
+        tags = tags_published()
+        self.cache(tags)
+        return tags
+
+    def lastmod(self, obj):
+        """Return last modification of a tag"""
+        nodetypes = self.cache_tags[obj.pk][0]
+        return nodetypes[0].creation_date
+
+    def priority(self, obj):
+        """Compute priority with cached coeffs"""
+        priority = 0.5 + self.cache_tags[obj.pk][1]
+        if priority > 1.0:
+            priority = 1.0
+        return '%.1f' % priority
+
+    def location(self, obj):
+        """Return url of a tag"""
+        return reverse('gstudio_tag_detail', args=[obj.name])