auto

README.md

 ## Project 5: Transactions, CMSC424, Fall 2019
-**v1.01**
+**v1.03**
 
 **(Due Dec 8, midnight)**
 
@@ -48,8 +48,6 @@ relations and tuples). **The code here and elsewhere implicitly assumes that the
 - `class TransactionState`: This class encapsulates some of the basic functionality of transactions, including some helper functions to create log records, keeping track of 
 what locks the transaction currently holds, etc.
 
-### Example logs and relations
-In `recoverytests-original/` and `recoverytests-answers/` 
 
 #### Development
 
@@ -133,6 +131,73 @@ will also check for the lock messages ("able to get this lock on...", etc.).
 Our testing will check both the contents of the database (the final versions of
 the relation file) and the `logfile`.
 
+Note that `testingRecovery.py` now uses **"relation"** instead of the original "relation1".
+
+Example logs and relations are
+in `recoverytests-original/` and `recoverytests-answers/`. Copy them into the
+current directory to run, as in:
+
+        titan:~/p5> cp recoverytests-original/recoverytest1_logfile logfile
+        titan:~/p5> cp recoverytests-original/recoverytest1_relation relation
+        titan:~/p5> cat logfile
+        [1, "START"]
+        [2, "START"]
+        [3, "START"]
+        [4, "START"]
+        [5, "START"]
+        [6, "START"]
+        [5, "UPDATE", "recoverytest1_relation", "2", "A", "10", "7"]
+        [5, "UPDATE", "recoverytest1_relation", "21", "A", "10", "13"]
+        [4, "UPDATE", "recoverytest1_relation", "1", "A", "10", "7"]
+        [4, "UPDATE", "recoverytest1_relation", "11", "A", "10", "13"]
+        [6, "UPDATE", "recoverytest1_relation", "3", "A", "10", "7"]
+        [6, "UPDATE", "recoverytest1_relation", "31", "A", "10", "13"]
+        [5, "COMMIT"]
+        [4, "CLR", "recoverytest1_relation", "11", "A", "10"]
+        [6, "CLR", "recoverytest1_relation", "31", "A", "10"]
+        [4, "CLR", "recoverytest1_relation", "1", "A", "10"]
+        [4, "ABORT"]
+        [6, "CLR", "recoverytest1_relation", "3", "A", "10"]
+        [6, "ABORT"]
+        [1, "UPDATE", "recoverytest1_relation", "0", "A", "10", "20"]
+        [2, "UPDATE", "recoverytest1_relation", "10", "A", "10", "20"]
+        [3, "UPDATE", "recoverytest1_relation", "20", "A", "10", "20"]
+        [1, "COMMIT"]
+        [2, "COMMIT"]
+        [3, "COMMIT"]
+        titan:~/p5> python testingRecovery.py 
+        Reading from 'logfile' and 'relation'
+        
+        Setting the last_tranasction_id to be 6
+        Starting Restart Recovery.......
+        titan:~/p5> cat logfile 
+        [1, "START"]
+        [2, "START"]
+        [3, "START"]
+        [4, "START"]
+        [5, "START"]
+        [6, "START"]
+        [5, "UPDATE", "recoverytest1_relation", "2", "A", "10", "7"]
+        [5, "UPDATE", "recoverytest1_relation", "21", "A", "10", "13"]
+        [4, "UPDATE", "recoverytest1_relation", "1", "A", "10", "7"]
+        [4, "UPDATE", "recoverytest1_relation", "11", "A", "10", "13"]
+        [6, "UPDATE", "recoverytest1_relation", "3", "A", "10", "7"]
+        [6, "UPDATE", "recoverytest1_relation", "31", "A", "10", "13"]
+        [5, "COMMIT"]
+        [4, "CLR", "recoverytest1_relation", "11", "A", "10"]
+        [6, "CLR", "recoverytest1_relation", "31", "A", "10"]
+        [4, "CLR", "recoverytest1_relation", "1", "A", "10"]
+        [4, "ABORT"]
+        [6, "CLR", "recoverytest1_relation", "3", "A", "10"]
+        [6, "ABORT"]
+        [1, "UPDATE", "recoverytest1_relation", "0", "A", "10", "20"]
+        [2, "UPDATE", "recoverytest1_relation", "10", "A", "10", "20"]
+        [3, "UPDATE", "recoverytest1_relation", "20", "A", "10", "20"]
+        [1, "COMMIT"]
+        [2, "COMMIT"]
+        [3, "COMMIT"]
+        [-1, "CHECKPOINT", []]
+        titan:~/p5> 
 
 ### Submission
 

testingRecovery.py

@@ -10,8 +10,8 @@ from exampletransactions import *
 #####################################################################################################
 # Initial Setup
 
-print("Reading from '{}' and '{}\n".format("logfile", "relation1"))
+print("Reading from '{}' and '{}'\n".format("logfile", "relation"))
 bpool = BufferPool()
-r = Relation('relation1')
+r = Relation('relation')
 LogManager.setAndAnalyzeLogFile('logfile')