CCF_100/relational
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25 Commits

Author SHA1 Message Date
LtWorf
4c5915e854 - Minor changes to comments 
git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@313 014f5005-505e-4b48-8d0a-63407b615a7c
 2011-10-08 17:04:07 +00:00
LtWorf
3ca26b10c6 - Forces relations to have correct attribute names 
git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@296 014f5005-505e-4b48-8d0a-63407b615a7c
 2011-04-01 07:06:08 +00:00
LtWorf
dfb3f19acf - Raises exception for wrong relational operations 
git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@295 014f5005-505e-4b48-8d0a-63407b615a7c
 2011-04-01 06:38:47 +00:00
LtWorf
b4dffea5cf - Changed header comments in modules 
git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@287 014f5005-505e-4b48-8d0a-63407b615a7c
 2011-03-22 16:02:36 +00:00
LtWorf
4a6f2cc222 - Handles sign in numeric types 
git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@284 014f5005-505e-4b48-8d0a-63407b615a7c
 2011-03-21 13:30:04 +00:00
LtWorf
1e51f9784f - test driver script is now executable 
- adds more generic procedure to perform implicit casting, thus eliminating duplicate code



git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@271 014f5005-505e-4b48-8d0a-63407b615a7c
 2011-03-03 09:27:53 +00:00
LtWorf
3b0392e867 - Float type recognition is more robust, now handled using a regexp 
- Date type recognition is more robust, now using a combination of regexp plus date object
- Parsing of strings representing dates is now cached, eliminating the need for double parse



git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@270 014f5005-505e-4b48-8d0a-63407b615a7c
 2011-03-03 08:46:04 +00:00
LtWorf
19ac2aaacd - Set hash method for the classes 
git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@265 014f5005-505e-4b48-8d0a-63407b615a7c
 2010-11-26 09:12:34 +00:00
LtWorf
41de96997d - Removed debug print 
git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@259 014f5005-505e-4b48-8d0a-63407b615a7c
 2010-10-08 05:52:09 +00:00
LtWorf
25c4c894c2 - Fixes __eq__ method 
- Fixes tokenization of python expressions, using python's builtin module tokenizer


git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@256 014f5005-505e-4b48-8d0a-63407b615a7c
 2010-10-04 13:44:25 +00:00
LtWorf
e375a65ec6 - Clearer and better code for handling relation comparisons 
git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@252 014f5005-505e-4b48-8d0a-63407b615a7c
 2010-09-22 13:31:19 +00:00
LtWorf
d63d0e78c0 - Rename will mark the resulting relation as readonly and subsequent updates, insert or deletes will actually copy the content 
git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@251 014f5005-505e-4b48-8d0a-63407b615a7c
 2010-09-22 13:12:02 +00:00
LtWorf
2073b4db4a - Internally uses set instead of lists to describe relation's content 
- Discards the old and not so functional tlb format



git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@250 014f5005-505e-4b48-8d0a-63407b615a7c
 2010-09-22 12:53:36 +00:00
LtWorf
36fd7af8fd - Inserted comments to explain what happens in the division 
git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@241 014f5005-505e-4b48-8d0a-63407b615a7c
 2010-07-02 14:49:24 +00:00
LtWorf
45af67f241 - Added division operator 
- Edited parser module to return the fields returned by a division operation
- Edited relation class API, renaming the rearrange method to _rearrange_
- Readline interface specifies that completion works only if supported by the terminal
- Added todo file



git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@240 014f5005-505e-4b48-8d0a-63407b615a7c
 2010-07-02 14:43:32 +00:00
LtWorf
ad84f402d5 - More detail for errors in evaluation 
- Printing errors on stdout too, as well as query conversion to python



git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@225 014f5005-505e-4b48-8d0a-63407b615a7c
 2010-04-08 09:43:29 +00:00
LtWorf
6adcd221bd Edited license 
Desktop file in make
SQL conversion (probably will be deleted again)


git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@219 014f5005-505e-4b48-8d0a-63407b615a7c
 2010-02-24 00:46:58 +00:00
LtWorf
ffa7140c6d Fixed problem with float numbers with selection of certain relations 
git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@215 014f5005-505e-4b48-8d0a-63407b615a7c
 2009-09-18 22:57:02 +00:00
LtWorf
7ecf75efb7 stupid indentation 
git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@146 014f5005-505e-4b48-8d0a-63407b615a7c
 2009-05-01 13:50:59 +00:00
LtWorf
52907e67e7 Optimization for rearrangements 
git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@145 014f5005-505e-4b48-8d0a-63407b615a7c
 2009-05-01 13:47:54 +00:00
LtWorf
169f809988 added comments 
git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@128 014f5005-505e-4b48-8d0a-63407b615a7c
 2009-04-28 17:41:21 +00:00
LtWorf
39a27aef71 Bug: error in update operation, it changed the original tuple, so also other relations using the same tuple would change. Now it copies it 
git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@122 014f5005-505e-4b48-8d0a-63407b615a7c
 2009-04-03 19:03:02 +00:00
LtWorf
44e2de218c rollback, the bug is in the update, not in the function 
git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@121 014f5005-505e-4b48-8d0a-63407b615a7c
 2009-04-03 18:19:42 +00:00
LtWorf
720d888c22 fixed error in rename operator, it didn't a full copy of the relation so update on the original relation would modify results of renamed ones 
git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@114 014f5005-505e-4b48-8d0a-63407b615a7c
 2009-03-19 12:54:49 +00:00
LtWorf
31fe0bf9ea splitted into modules 
git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@93 014f5005-505e-4b48-8d0a-63407b615a7c
 2009-02-26 13:18:02 +00:00