[FEAT] Adding cooc in the rest api to get ngrams.

rest_v1_0/ngrams.py

@@ -76,76 +76,6 @@ from rest_framework.decorators import api_view
 # TODO how to secure REST ?
 
 
-def get_occtfidf( ngrams , user_id , corpus_id , list_name):
-    ngram_ids = {}
-    corpus = session.query(Node).filter( Node.id==corpus_id ).first()
-    nodes_ngrams = session.query(Ngram).filter(Ngram.id.in_( ngrams ) ).all()
-    for ngram in nodes_ngrams:
-        ngram_ids[ngram.id] = {
-            "id": ngram.id,
-            "name": ngram.terms,
-            "scores": {}
-        }
-
-    # [ = = = = = = Get Uniq_Occs = = = = = = ]
-    myamlist = session.query(Node).filter(Node.user_id == user_id , Node.parent_id==corpus_id , Node.type_id == cache.NodeType[list_name].id ).first()
-    Miam = aliased(NodeNgram)
-    ngrams_occs = (session.query(NodeNgram.ngram_id, func.sum(NodeNgram.weight))
-                          .join(Node, Node.id == NodeNgram.node_id)
-                          .join(Miam, Miam.ngram_id == NodeNgram.ngram_id)
-                          .filter(Node.parent_id == corpus_id, Node.type_id==cache.NodeType['Document'].id)
-                          .filter(Miam.node_id==myamlist.id)
-                          .group_by(NodeNgram.ngram_id)
-                          .all()
-                  )
-
-    for ngram in ngrams_occs:
-        try:
-            ngram_ids [ ngram[0] ]["scores"][ "occ_uniq" ] = ngram[1]
-        except:
-            pass
-    for i in ngram_ids:
-        if "occ_uniq" not in ngram_ids[i]["scores"]:
-            ngram_ids[i]["scores"][ "occ_uniq" ] = 1
-    # [ = = = = = = / Get Uniq_Occs = = = = = = ]
-
-    group_by = []
-    results   = ['id', 'terms']
-
-    ngrams_query = (session
-        .query(Ngram.id, Ngram.terms)
-        .join(Node_Ngram, Node_Ngram.ngram_id == Ngram.id)
-        .join(Node, Node.id == Node_Ngram.node_id)
-    )
-    Tfidf = aliased(NodeNodeNgram)
-    tfidf_id = get_or_create_node(nodetype='Tfidf (global)', corpus=corpus).id
-    ngrams_query = (ngrams_query.add_column(Tfidf.score.label('tfidf'))
-                                .join(Tfidf, Tfidf.ngram_id == Ngram.id)
-                                .filter(Tfidf.nodex_id == tfidf_id)
-                    )
-    group_by.append(Tfidf.score)
-    results.append('tfidf')
-    ngrams_query = (ngrams_query.filter(Node.parent_id == corpus_id)
-            .group_by(Ngram.id, Ngram.terms, *group_by)
-            )
-
-    TheList = aliased(NodeNgram)
-    list_id = get_or_create_node(nodetype=list_name, corpus=corpus).id
-    ngrams_query = (ngrams_query.join(TheList, TheList.ngram_id == Ngram.id )
-                                .filter(TheList.node_id == list_id)
-                    )
-    for ngram in ngrams_query:
-        try:
-            ngram_ids [ ngram[0] ]["scores"][ "tfidf" ] = ngram[2]
-        except:
-            pass
-            
-    for i in ngram_ids:
-        if "tfidf" not in ngram_ids[i]["scores"]:
-            ngram_ids[i]["scores"][ "tfidf" ] = 0.01
-
-    return ngram_ids
-
 
 class List(APIView):
 
@@ -168,7 +98,8 @@ class List(APIView):
 class Ngrams(APIView):
     '''
     REST application to manage ngrams
-
+    Example : 
+    http://localhost:8000/api/node/1444485/ngrams?format=json&score=tfidf,occurrences
     '''
     def get(self, request, node_id):
         # query ngrams
@@ -203,6 +134,10 @@ class Ngrams(APIView):
         #                 )
         #     for i in ngrams_query:
         #         print(i)
+        if 'occurrences' in the_score:
+            occurrences = func.sum(Node_Ngram.weight).label('occurrences')
+            ngrams_query = (ngrams_query.add_column(occurrences))
+            results.append('occurences')
 
         if 'tfidf' in the_score:
             Tfidf = aliased(NodeNodeNgram)
@@ -235,7 +170,9 @@ class Ngrams(APIView):
             results.append('specificity')
 
         order_query = request.GET.get('order', False)
-        if order_query == 'cvalue':
+        if order_query == 'occurrences':
+            ngrams_query = ngrams_query.order_by(desc(occurrences))
+        elif order_query == 'cvalue':
             ngrams_query = ngrams_query.order_by(desc(Cvalue.score))
         elif order_query == 'tfidf':
             ngrams_query = ngrams_query.order_by(desc(Tfidf.score))
@@ -309,6 +246,8 @@ class Ngrams(APIView):
             except: pass
             try: info["terms"] = ngram.terms
             except: pass
+            try: info["occurrences"] = ngram.occurrences
+            except: pass
             try: info["tfidf"] = ngram.tfidf
             except: pass
             try: info["cvalue"] = ngram.cvalue