add signal based index updates (#60)

Author: ciur

docker/dev/config/settings.py

@@ -56,3 +56,4 @@
         'search',
         'url'
     )
+

docker/dev/install_xapian.sh

@@ -0,0 +1,40 @@
+VERSION=1.4.20
+
+# prepare
+mkdir $VIRTUAL_ENV/packages && cd $VIRTUAL_ENV/packages
+
+CORE=xapian-core-$VERSION
+BINDINGS=xapian-bindings-$VERSION
+
+# download
+echo "Downloading source..."
+curl -O https://oligarchy.co.uk/xapian/$VERSION/${CORE}.tar.xz
+curl -O https://oligarchy.co.uk/xapian/$VERSION/${BINDINGS}.tar.xz
+
+# extract
+echo "Extracting source..."
+tar xf ${CORE}.tar.xz
+tar xf ${BINDINGS}.tar.xz
+
+# install
+echo "Installing Xapian-core..."
+cd $VIRTUAL_ENV/packages/${CORE}
+./configure --prefix=$VIRTUAL_ENV && make && make install
+
+PYV=`python -c "import sys;t='{v[0]}'.format(v=list(sys.version_info[:1]));sys.stdout.write(t)";`
+
+if [ $PYV = "2" ]; then
+    PYTHON_FLAG=--with-python
+else
+    PYTHON_FLAG=--with-python3
+fi
+
+echo "Installing Xapian-bindings..."
+cd $VIRTUAL_ENV/packages/${BINDINGS}
+./configure --prefix=$VIRTUAL_ENV $PYTHON_FLAG XAPIAN_CONFIG=$VIRTUAL_ENV/bin/xapian-config && make && make install
+
+# clean
+# rm -rf $VIRTUAL_ENV/packages
+
+# test
+python -c "import xapian"

papermerge/conf/settings.py

@@ -353,3 +353,5 @@
         'ENGINE': SEARCH_ENGINES_MAP[search_engine],
     },
 }
+
+HAYSTACK_SIGNAL_PROCESSOR = 'papermerge.search.signals.SignalProcessor'

papermerge/search/signals.py

@@ -4,7 +4,7 @@
 from papermerge.core.models import DocumentVersion, Document, Folder
 
 
-class UserOnlySignalProcessor(signals.BaseSignalProcessor):
+class SignalProcessor(signals.BaseSignalProcessor):
     def setup(self):
         for klass in (DocumentVersion, Document, Folder):
             models.signals.post_save.connect(self.handle_save, sender=klass)