added all server files

1 files changed, 44 insertions, 0 deletions

diff --git a/lib/python2.7/site-packages/django/contrib/gis/db/backends/util.py b/lib/python2.7/site-packages/django/contrib/gis/db/backends/util.py
new file mode 100644
index 0000000..2612810
--- /dev/null
+++ b/lib/python2.7/site-packages/django/contrib/gis/db/backends/util.py
@@ -0,0 +1,44 @@
+"""
+A collection of utility routines and classes used by the spatial
+backends.
+"""
+
+class SpatialOperation(object):
+    """
+    Base class for generating spatial SQL.
+    """
+    sql_template = '%(geo_col)s %(operator)s %(geometry)s'
+
+    def __init__(self, function='', operator='', result='', **kwargs):
+        self.function = function
+        self.operator = operator
+        self.result = result
+        self.extra = kwargs
+
+    def as_sql(self, geo_col, geometry='%s'):
+        return self.sql_template % self.params(geo_col, geometry), []
+
+    def params(self, geo_col, geometry):
+        params = {'function' : self.function,
+                  'geo_col' : geo_col,
+                  'geometry' : geometry,
+                  'operator' : self.operator,
+                  'result' : self.result,
+                  }
+        params.update(self.extra)
+        return params
+
+class SpatialFunction(SpatialOperation):
+    """
+    Base class for generating spatial SQL related to a function.
+    """
+    sql_template = '%(function)s(%(geo_col)s, %(geometry)s)'
+
+    def __init__(self, func, result='', operator='', **kwargs):
+        # Getting the function prefix.
+        default = {'function' : func,
+                   'operator' : operator,
+                   'result' : result
+                   }
+        kwargs.update(default)
+        super(SpatialFunction, self).__init__(**kwargs)