docs

pexp/management/commands/p2cmd.py

@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 """
 This module is a scratchpad for general development, testing & debugging
+Well, even more so than pcmd.py. You best ignore p2cmd.py.
 """
 import uuid
 
@@ -8,6 +9,7 @@ from django.core.management.base import NoArgsCommand
 from django.db.models import connection
 from pprint import pprint
 import settings
+import time,sys
 
 from pexp.models import *
 
@@ -17,6 +19,27 @@ def reset_queries():
 def show_queries():
     print; print 'QUERIES:',len(connection.queries); pprint(connection.queries); print; connection.queries=[]
 
+def print_timing(func, message='', iterations=1):
+    def wrapper(*arg):
+        results=[]
+        reset_queries()
+        for i in xrange(iterations):
+            t1 = time.time()
+            x = func(*arg)
+            t2 = time.time()
+            results.append((t2-t1)*1000.0)
+        res_sum=0
+        for r in results: res_sum +=r
+        median = res_sum / len(results)
+        print '%s%-19s: %.4f ms, %i queries (%i times)' % (
+            message,func.func_name,
+            res_sum,
+            len(connection.queries),
+            iterations
+            )
+        sys.stdout.flush()
+    return wrapper
+
 class Command(NoArgsCommand):
     help = ""
 
@@ -24,27 +47,64 @@ class Command(NoArgsCommand):
         print 'polycmd - sqlite test db is stored in:',settings.SQLITE_DB_PATH
         print
 
-        Project.objects.all().delete()
-        a=Project.objects.create(topic="John's gathering")
-        b=ArtProject.objects.create(topic="Sculpting with Tim", artist="T. Turner")
-        c=ResearchProject.objects.create(topic="Swallow Aerodynamics", supervisor="Dr. Winter")
-        print Project.objects.all()
-        print
+        if False:
+            ModelA.objects.all().delete()
+            a=ModelA.objects.create(field1='A1')
+            b=ModelB.objects.create(field1='B1', field2='B2')
+            c=ModelC.objects.create(field1='C1', field2='C2', field3='C3')
+            reset_queries()
+            print ModelC.base_objects.all();
+            show_queries()
 
-        ModelA.objects.all().delete()
-        a=ModelA.objects.create(field1='A1')
-        b=ModelB.objects.create(field1='B1', field2='B2')
-        c=ModelC.objects.create(field1='C1', field2='C2', field3='C3')
-<<<<<<< HEAD:pexp/management/commands/p2cmd.py
-        print ModelA.objects.extra( select={"select1": "field1 = 'A1'", "select2": "field1 = 'A0'"} )
-=======
-        print ModelA.objects.extra( select={"select1": "field1 = 'A1'", "select2": "field1 != 'A1'"} )
->>>>>>> 7c2be35... pexp:pexp/management/commands/p2cmd.py
-        print
+        if False:
+            ModelA.objects.all().delete()
+            for i in xrange(1000):
+                a=ModelA.objects.create(field1=str(i%100))
+                b=ModelB.objects.create(field1=str(i%100), field2=str(i%200))
+                c=ModelC.objects.create(field1=str(i%100), field2=str(i%200), field3=str(i%300))
+                if i%100==0: print i
 
-        if not 'UUIDField' in globals(): return
-        UUIDModelA.objects.all().delete()
-        a=UUIDModelA.objects.create(field1='012345678900123456789001234567890012345678900123456789001234567890')
-        b=UUIDModelB.objects.create(field1='B1', field2='B2')
-        c=UUIDModelC.objects.create(field1='C1', field2='C2', field3='C3')
-        print UUIDModelA.objects.all()
+        f=print_timing(poly_sql_query,iterations=1000)
+        f()
+        
+        f=print_timing(poly_sql_query2,iterations=1000)
+        f()
+
+        return
+
+        nModelA.objects.all().delete()
+        a=nModelA.objects.create(field1='A1')
+        b=nModelB.objects.create(field1='B1', field2='B2')
+        c=nModelC.objects.create(field1='C1', field2='C2', field3='C3')
+        qs=ModelA.objects.raw("SELECT * from pexp_modela")
+        for o in list(qs): print o
+
+from django.db import connection, transaction
+from random import Random
+rnd=Random()
+
+def poly_sql_query():
+    cursor = connection.cursor()
+    cursor.execute("""
+        SELECT id, pexp_modela.field1, pexp_modelb.field2, pexp_modelc.field3
+        FROM pexp_modela
+        LEFT OUTER JOIN pexp_modelb
+        ON pexp_modela.id = pexp_modelb.modela_ptr_id
+        LEFT OUTER JOIN pexp_modelc
+        ON pexp_modelb.modela_ptr_id = pexp_modelc.modelb_ptr_id
+        WHERE pexp_modela.field1=%i
+        ORDER BY pexp_modela.id
+        """ % rnd.randint(0,100) )
+    #row=cursor.fetchone()
+    return
+
+def poly_sql_query2():
+    cursor = connection.cursor()
+    cursor.execute("""
+        SELECT id, pexp_modela.field1
+        FROM pexp_modela
+        WHERE pexp_modela.field1=%i
+        ORDER BY pexp_modela.id
+        """ % rnd.randint(0,100) )
+    #row=cursor.fetchone()
+    return

pexp/management/commands/pcmd.py

@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 """
-This module is a scratchpad for general development, testing & debugging
+This module is a scratchpad for general development, testing & debugging.
 """
 
 from django.core.management.base import NoArgsCommand