IMPORTANT: myslice/manifold folder REMOVED due to conflicts with Manifold Server...

[unfold.git] / manifoldapi / metadata.py

diff --git a/manifoldapi/metadata.py b/manifoldapi/metadata.py
new file mode 100644 (file)
index 0000000..300397c
--- /dev/null
+++ b/manifoldapi/metadata.py
@@ -0,0 +1,62 @@
+import json 
+import os.path
+
+from manifoldresult     import ManifoldResult
+from manifoldapi        import ManifoldAPI
+
+from django.contrib     import messages
+
+debug=False
+#debug=True
+
+class MetaData:
+
+    def __init__ (self, auth):
+        self.auth=auth
+        self.hash_by_object={}
+
+    def fetch (self, request):
+        manifold_api = ManifoldAPI(self.auth)
+        fields = ['table', 'column.name', 'column.qualifier', 'column.type', 
+                  'column.is_array', 'column.description', 'column.default', 'key', 'capability']
+        #fields = ['table', 'column.column',
+        #          'column.description','column.header', 'column.title',
+        #          'column.unit', 'column.info_type',
+        #          'column.resource_type', 'column.value_type',
+        #          'column.allowed_values', 'column.platforms.platform',
+        #          'column.platforms.platform_url']
+        request={ 'action': 'get',
+                  'object': 'local:object', # proposed to replace metadata:table
+                  'fields':  fields ,
+                  }
+        result = manifold_api.forward(request)
+
+        # xxx need a way to export error messages to the UI
+        if result['code'] == 1: # warning
+            # messages.warning(request, result['description'])
+            print ("METADATA WARNING -",request,result['description'])
+        elif result['code'] == 2:
+            # messages.error(request, result['description'])
+            print ("METADATA ERROR -",request,result['description'])
+            # XXX FAIL HERE XXX
+            return
+
+        rows = result.ok_value()
+# API errors will be handled by the outer logic
+#        if not rows:
+#            print "Failed to retrieve metadata",rows_result.error()
+#            rows=[]
+        self.hash_by_object = dict ( [ (row['table'], row) for row in rows ] )
+
+    def to_json(self):
+        return json.dumps(self.hash_by_object)
+
+    def details_by_object (self, object):
+        return self.hash_by_object[object]
+
+    def sorted_fields_by_object (self, object):
+        return self.hash_by_object[object]['column'].sort()
+
+    def get_field_type(self, object, field):
+        if debug: print "Temp fix for metadata::get_field_type() -> consider moving to manifold.core.metadata soon"
+        return field