FWD » Core Development » Database

12/17/2012

06:02 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

Variant above does not require aliases mapping because argument type is calculated in HQLPreprocessor.
I made one m... Vadim Nebogatov

08:23 AM Feature #1580: upgrade Hibernate to latest level

Testcase for the "Found two representations of same collection" issue:... Stanislav Lomany

12/15/2012

05:21 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

Approach described above is implemented, it works and on testing now.
But I have found one more problem.
If where... Vadim Nebogatov

12/14/2012

01:49 PM Feature #1580: upgrade Hibernate to latest level

> Did this behavior change from 3.0.5?
Yes, 3.0.5 just checks if there is the entity in the persistence context (reg... Stanislav Lomany

01:13 PM Feature #1580: upgrade Hibernate to latest level

Stanislav Lomany wrote:
> The "crossReferenceItem already exists with" issue is about Session.contains function. In ... Eric Faulhaber

06:42 AM Feature #1580: upgrade Hibernate to latest level

The "crossReferenceItem already exists with" issue is about Session.contains function. In Hibernate 4 it returns FALS... Stanislav Lomany

01:46 PM Feature #1911: add runtime support for sequences

Ovidiu Maxiniuc wrote:
> ...The fact is, this is the exact way PostgreSQL handles sequences and this should be a goo... Eric Faulhaber

11:21 AM Feature #1911: add runtime support for sequences

I have discovered something at least interesting today. The Progress/4GL 9 and OpenEdge/ABL 11 Reference books, both ... Ovidiu Maxiniuc

12:15 PM Feature #1910: add schema conversion support for sequences

As I created a new test case file for sequences I discovered that the @Sequencemanager.setValue()@ set of overloaded ... Ovidiu Maxiniuc

07:25 AM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

I understood the reason of problem with nested SQL Functions invocation (NPE on parsing SQL Function argument time): ... Vadim Nebogatov

12/13/2012

12:21 PM Feature #1926: create an en_GB@p2j_basic locale definition

I have done a first cut of this as described above, but I'm pretty sure it's not quite right yet.
I exported the c... Eric Faulhaber

12/12/2012

05:11 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

Some tests are attached and passed as expected.
Now I am working with tests containing nested sql functions - not a... Vadim Nebogatov

12/11/2012

04:44 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

I have attached SQL Functions I am going to test now. Sorry, there are no proper comments and formatting just because... Vadim Nebogatov

12:05 PM Feature #1910: add schema conversion support for sequences

Ovidiu Maxiniuc wrote:
> The @_seqvals.d@ is indeed the default filename for exported sequence values. I documented ... Eric Faulhaber

11:29 AM Feature #1910: add schema conversion support for sequences

Changes in today's update:
* @src@ directory structure fixed
* @dbimport@ replaced @seqimp@
* fixed indentation/al... Ovidiu Maxiniuc

12/10/2012

02:34 PM Feature #1580: upgrade Hibernate to latest level

About "Found two representations"-related issues:
1. In the first issue ("crossReferenceItem already exists with") p... Stanislav Lomany

02:19 PM Feature #1910: add schema conversion support for sequences

After you finish with the code changes resulting from the above code reviews, please review all places in the P2J Con... Eric Faulhaber

02:12 PM Feature #1910: add schema conversion support for sequences

Code review 1210b:
* Nice work! I'm excited to give this a test run with a real database.
* Is _seqvals.d a hard... Eric Faulhaber

01:38 PM Feature #1910 (WIP): add schema conversion support for sequences

Eric Faulhaber

01:38 PM Feature #1910: add schema conversion support for sequences

Code review 1210a:
Please note that the following files in your zip file:... Eric Faulhaber

11:11 AM Feature #1910 (Review): add schema conversion support for sequences

Added sequence current value import Ovidiu Maxiniuc

06:59 AM Feature #1910: add schema conversion support for sequences

Moved the generation of sequence ddl from .schema to .p2o file. Ovidiu Maxiniuc

11:37 AM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

Vadim Nebogatov wrote:
> The arguments passed to SQLFunction are strings; we can parse them separately to Ast tree l... Eric Faulhaber

12/08/2012

01:40 AM Feature #1580: upgrade Hibernate to latest level

> Yes, this needs to be fixed, but I'm not sure what the issue is here. In build.xml, we copy the ehcache configurat... Stanislav Lomany

12/07/2012

05:26 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

The arguments passed to SQLFunction are strings; we can parse them separately to Ast tree like method parse() does:
... Vadim Nebogatov

12:50 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

Vadim Nebogatov wrote:
> I tried to find out also how to simplify first approach for constant expressions and for no... Eric Faulhaber

02:48 PM Feature #1581: add conversion and runtime support for certain metadata constructs

Discussed with Greg. Probably the best approach is to use an embedded H2 database to provide access to these metadat... Eric Faulhaber

01:54 PM Feature #1583: add conversion and runtime support for the INSERT language statement

Code looks good, but I should not have suggested that this go into post-parse fixups. This is too early, and it will... Eric Faulhaber

01:01 PM Feature #1580: upgrade Hibernate to latest level

Stanislav Lomany wrote:
> 6. "(net.sf.ehcache.config.ConfigurationFactory:WARNING) No configuration found. Configuri... Eric Faulhaber

12:29 AM Feature #1580: upgrade Hibernate to latest level

I'm not so sure this behavior is about an unstable release. But I think you are right that the select statement is p... Eric Faulhaber

12/06/2012

10:28 AM Feature #1910: add schema conversion support for sequences

Please make this issue your highest priority (including the import of current sequence values). We need to deliver a ... Eric Faulhaber

10:23 AM Feature #1910: add schema conversion support for sequences

Taking into consideration that the rules are more or less the same, a couple of hours should be enough to move the so... Ovidiu Maxiniuc

09:53 AM Feature #1910: add schema conversion support for sequences

I'm sorry, but in my review of your initial updates, I didn't notice that you were generating the sequence DDL from t... Eric Faulhaber

02:35 AM Feature #1910: add schema conversion support for sequences

I observed yesterday that the converted data dictionary file .p2o does not contains any reference to the sequence. Th... Ovidiu Maxiniuc

08:57 AM Feature #1580: upgrade Hibernate to latest level

About "Found two representations". After I've inserted the following code right after deletion of the target item the... Stanislav Lomany

02:09 AM Feature #1580: upgrade Hibernate to latest level

> Good work on finding a reliable recreate. Please open a new bug issue in the database project for this error, but ... Stanislav Lomany

12/05/2012

04:20 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

I also think it is hard to predict now how will SQLFunction approch affect caching and performance. I hope not very m... Vadim Nebogatov

02:39 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

As far as when to do it, I would say to do a quick and dirty test soon if possible. You want to know now if there is... Greg Shah

02:00 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

AFAIK, we have not done any work to determine the potential performance penalty.
We will have to look at some typi... Eric Faulhaber

01:28 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

Eric: my questions were not related to the potential worry that you have about performance issues. I was fully aware... Greg Shah

02:15 PM Feature #1580: upgrade Hibernate to latest level

Good work on finding a reliable recreate. Please open a new bug issue in the database project for this error, but do... Eric Faulhaber

10:57 AM Feature #1580: upgrade Hibernate to latest level

About... Stanislav Lomany

11:51 AM Feature #1911: add runtime support for sequences

I spoke with Greg about this and he suggested a much more efficient (and simpler) solution:
Add flags to the direc... Eric Faulhaber

12/04/2012

06:05 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

Investigation SQLFunctions processing in Hibernate&Antlr source code. SqlGenerator invokes SQLFunction.render() metho... Vadim Nebogatov

12:29 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

Greg Shah wrote:
> Did I miss this?
Apparently, yes, you missed the post (# 49) where I voiced my concern about p... Eric Faulhaber

12:14 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

Greg Shah wrote:
> I didn't realize that we already had eq and ne. When are they used? I previously thought that w... Eric Faulhaber

08:23 AM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

Did I miss this? Is there a performance penalty to using the SQLFunction approach?
Also, what is the performance ... Greg Shah

08:22 AM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

equals and not_equals seem fine to me.
I didn't realize that we already had eq and ne. When are they used? I pre... Greg Shah

12:23 AM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

Eric Faulhaber wrote:
> ...or even @eq@ and @neq@?
I just remembered @eq@ and @ne@ already are user defined funct... Eric Faulhaber

12:13 AM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

OK, it appears you have determined the SQLFunction approach is feasible. Let's go with it and see how it performs. ... Eric Faulhaber

01:43 AM Feature #1911: add runtime support for sequences

The implementation a service thread for handling sequence primitives (current/next/set) like this:
- the current val... Ovidiu Maxiniuc

12/03/2012

04:54 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

Concerning Example 3:
I tested with H2 database: for case f1=true, f2=true expression
(tt.f1 != true and tt.f2... Vadim Nebogatov

01:23 PM Feature #1580: upgrade Hibernate to latest level

OK, it sounds like caching the Hibernation Configuration objects by schema is no longer a safe thing to do with this ... Eric Faulhaber

01:05 PM Feature #1580: upgrade Hibernate to latest level

> What "type" resource was scoped to one SessionFactory that is now being scoped to another? In other words, what re... Stanislav Lomany

12:06 PM Feature #1580: upgrade Hibernate to latest level

Stanislav Lomany wrote:
> ... Eric Faulhaber

09:44 AM Feature #1580: upgrade Hibernate to latest level

>The root cause might be because the ConnectionManager.local.cleanup is executed before the Persistence.Context.clean... Stanislav Lomany

08:56 AM Feature #1580: upgrade Hibernate to latest level

> 3. "error closing Hibernate session" is caused by fact that the session with a remote database is closed on applica... Constantin Asofiei

05:57 AM Feature #1580: upgrade Hibernate to latest level

Warning that appears when multiple servers are executed on the same machine:... Stanislav Lomany

05:53 AM Feature #1580: upgrade Hibernate to latest level

1.... Stanislav Lomany

12/02/2012

06:21 AM Feature #1580: upgrade Hibernate to latest level

The following issue:... Stanislav Lomany

11/29/2012

04:24 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

SQLFunctionTemplate does not allow repeating parameters, but direct implementation of SQLFunction interface seems res... Vadim Nebogatov

04:20 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

SQLFunction approach (SQLFunctions are already in Hibernate v3.0.5).
I have added
registerFunction("p2j... Vadim Nebogatov

05:35 AM Feature #1580: upgrade Hibernate to latest level

> When those first warnings appear in the log, is it just the messages themselves, or is there any associated stack t... Stanislav Lomany

10:30 PM Feature #1580: upgrade Hibernate to latest level

When those first warnings appear in the log, is it just the messages themselves, or is there any associated stack tra... Eric Faulhaber

11:25 PM Feature #1582: add conversion and runtime support for sequences

Some additional code review comments for the 1123a drop:
* How is CustomSequence to be used? AFAIK, Progress sequ... Eric Faulhaber

10:40 PM Feature #1911: add runtime support for sequences

If we need transaction processing separate from the current (application-defined) database transaction, it sounds lik... Eric Faulhaber

11/28/2012

03:33 PM Feature #1580: upgrade Hibernate to latest level

I looked at the original log carefully and now we have reproduction:
V-C-select RFQ-Enter (RFQ server should be runn... Stanislav Lomany

10:26 AM Feature #1580: upgrade Hibernate to latest level

Stas, my conclusion about this being a threading issue was based on some cursory Internet research. Please dig into ... Eric Faulhaber

06:09 AM Feature #1580: upgrade Hibernate to latest level

Stanislav,
From the org.hibernate.Session javadoc (http://docs.jboss.org/hibernate/orm/4.1/javadocs/org/hibernate/Se... Constantin Asofiei

05:54 AM Feature #1580: upgrade Hibernate to latest level

A session CAN be closed in another thread:... Stanislav Lomany

11:06 AM Feature #1911: add runtime support for sequences

An issue related to PSQL, but not only:
On a finite, non cycling sequences, calling @nextVal@ will return an error... Ovidiu Maxiniuc

04:18 AM Feature #1583 (Review): add conversion and runtime support for the INSERT language statement

Ovidiu Maxiniuc

04:18 AM Feature #1583 (WIP): add conversion and runtime support for the INSERT language statement

Ovidiu Maxiniuc

04:15 AM Feature #1583: add conversion and runtime support for the INSERT language statement

I first tested if the sequence of CREATE/UPDATE has the same effect like @INSERT@. My fear was that if user skips the... Ovidiu Maxiniuc

11/27/2012

06:32 PM Feature #1580: upgrade Hibernate to latest level

Eric Faulhaber wrote:
> ... Although I haven't looked at the latest Hibernate source, I suspect Hibernate is using a... Eric Faulhaber

06:21 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

Please explain your SQLFunction idea more fully. It is intriguing.
I think this is a relatively new feature in Hi... Eric Faulhaber

06:03 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

How to proceed with this task?.. Vadim Nebogatov

04:57 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

One more option is providing a custom comparing functions (org.hibernate.dialect.function.SQLFunction) registered wit... Vadim Nebogatov

11/26/2012

06:22 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

I agreed absolutely. But it seems there is no choice if you want to fix this issue on the HQL level.
My draft idea ... Vadim Nebogatov

12:05 AM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

Vadim Nebogatov wrote:
> > I don't remember this being a supported operator in HQL.
> What operator did you mean? H... Eric Faulhaber

12:59 PM Feature #1666: add support for mixed-direction indexes

I use PostgreSQL 9.1 (not the latest available version but what I have installed) to test this issue. Also I have a p... Ovidiu Maxiniuc

12:26 PM Feature #1926: create an en_GB@p2j_basic locale definition

Model this after locale/en_US@p2j_basic, customizing LC_CTYPE and LC_COLLATE sections. Use en_GB as a basis instead ... Eric Faulhaber

12:22 PM Feature #1926 (Hold): create an en_GB@p2j_basic locale definition

Eric Faulhaber

11/25/2012

04:56 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

Yes, you are correct, I did not notice that issue concerns NHibernate, but all others I wrote about Hibernate.
CA... Vadim Nebogatov

02:04 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

Vadim Nebogatov wrote:
> IS [NOT] DISTINCT FROM predicate is not supported with Hibernate and it seems they even do ... Eric Faulhaber

12:25 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

IS [NOT] DISTINCT FROM predicate is not supported with Hibernate and it seems they even do not plan to support it:
... Vadim Nebogatov

11/24/2012

05:00 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

Vadim Nebogatov wrote:
> What about limitations for SQL statement length which some databases have? Resulting SQL st... Eric Faulhaber

03:30 PM Feature #1911 (WIP): add runtime support for sequences

Eric Faulhaber

03:25 PM Feature #1666: add support for mixed-direction indexes

Highest priority sub-tasks of this issue should be:
# to fix the creation of indexes during the data import proces... Eric Faulhaber

11/23/2012

06:01 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

Yes, I understand this. Converted code will be not affected in this case, HQLAst and parameter list changes should be... Vadim Nebogatov

05:53 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

I'll let Eric comment on all the other good information and questions you have posed.
The only thing I want to mak... Greg Shah

05:34 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

What about limitations for SQL statement length which some databases have? Resulting SQL statement could be very heavy. Vadim Nebogatov

05:15 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

I have found out that not only inequality should be replaced but equality also work incorrectly in some cases.
Very ... Vadim Nebogatov

01:26 PM Feature #1582 (WIP): add conversion and runtime support for sequences

I have reviewed the progress.g changes. They are fine. My only request is for you to please change the ending copyr... Greg Shah

12:04 PM Feature #1582: add conversion and runtime support for sequences

My answers/comments to your questions:
* There is no separate ddl file generated for sequences. Only the xml that ge... Ovidiu Maxiniuc

01:03 AM Feature #1582: add conversion and runtime support for sequences

I have done only a very high-level review of the update so far, and it looks like you've addressed all the necessary ... Eric Faulhaber

08:32 AM Feature #1580: upgrade Hibernate to latest level

I don't like putting a Hibernate-specific hack into our more generic implementation.
Let's back up a bit. In what... Greg Shah

11/22/2012

03:04 PM Feature #1580: upgrade Hibernate to latest level

Eric, at 3 I'm not saying that is not feasible; as only Conversation threads can create hibernate Sessions, at a firs... Constantin Asofiei

01:16 PM Feature #1580: upgrade Hibernate to latest level

Regarding points 1 & 2 in the previous post: currently, there is no creation of Hibernate Session objects on anythin... Eric Faulhaber

11:42 AM Feature #1580: upgrade Hibernate to latest level

Thoughts about context cleanup:
# If the we decide to clean the Hibernate session on the Conversion thread, then we ... Constantin Asofiei

11:02 AM Feature #1580: upgrade Hibernate to latest level

The Hibernate Session objects are created on the conversation thread (for that matter, all persistence runtime code o... Eric Faulhaber

09:52 AM Feature #1580: upgrade Hibernate to latest level

I don't think it is as simple as you suggest. By its nature, all contexts are accessed from multiple threads. At a ... Greg Shah

12:56 AM Feature #1580: upgrade Hibernate to latest level

Regarding the error...... Eric Faulhaber

12:35 AM Feature #1580: upgrade Hibernate to latest level

Eric Faulhaber wrote:
> How common was the
>
> [...]
>
> error in the regression server log? This looks a lot... Stanislav Lomany

12:28 AM Feature #1580: upgrade Hibernate to latest level

How common was the... Eric Faulhaber

11:01 AM Feature #1582: add conversion and runtime support for sequences

Uploaded update patch that covers both conversion and runtime sub-tasks (1910 and 1911). Ovidiu Maxiniuc

09:17 AM Feature #1583: add conversion and runtime support for the INSERT language statement

Yes, I agree completely. So far we have almost never seen this statement used in practice. It is an interesting com... Greg Shah

12:17 AM Feature #1583: add conversion and runtime support for the INSERT language statement

Greg,
There are only 4 uses of this statement across both projects (all in the server project), and they are all o... Eric Faulhaber

06:17 AM Feature #1911: add runtime support for sequences

I discovered a way to access the current value in PostgreSQL without calling @CURRVAL@ which fails if it's called bef... Ovidiu Maxiniuc

12:21 AM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

Yes, I agree, let's put it in the HQLPreprocessor. Eric Faulhaber

11/21/2012

12:58 PM Feature #1580: upgrade Hibernate to latest level

Modification of LogicalUserType completely solves the problem (unless regression testing will show a surprise). Other... Stanislav Lomany

12:11 PM Feature #1580: upgrade Hibernate to latest level

Stanislav Lomany wrote:
> 4. Possible work around: use quotes for boolean literals: 'true' and 'false'
> 5. I don't... Eric Faulhaber

10:23 AM Feature #1580: upgrade Hibernate to latest level

About boolean literals:
1. The bug/feature is related only to the fields of the P2J LogicalUserType (and any other c... Stanislav Lomany

09:48 AM Feature #1911: add runtime support for sequences

Here are the result about MS SQL server. I used the free 2012 EXPRESS version with SP1, but I believe that there are ... Ovidiu Maxiniuc

11/20/2012

11:20 AM Feature #1911: add runtime support for sequences

1. There is no problem for Progress/OE having a simple code like:... Ovidiu Maxiniuc

10:53 AM Feature #1911: add runtime support for sequences

Please also research sequences in MS SQL Server, which we have to support for this project. Eric Faulhaber

10:38 AM Feature #1911: add runtime support for sequences

Ovidiu Maxiniuc wrote:
> [...]
>
> *PostgreSQL*
> * offers full support for sequences (min and max values, varia... Eric Faulhaber

08:21 AM Feature #1911: add runtime support for sequences

I have done some investigations and here is what I found out:
The Hibernate @Dialect@ base class defines the followi... Ovidiu Maxiniuc

07:52 AM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

This should not be exploded into the code. It should be hidden in the HQL preprocessor.
There is even a good reas... Greg Shah

11/19/2012

05:45 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

In common case 4GL inequality expression in WHERE clause
exp1!=exp2
should be replaced with
(exp1 is null and e... Vadim Nebogatov

09:41 AM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

Vadim Nebogatov wrote:
> Problem found. In common case is that not enough to change
>
> expr1 != expr2
>
> to
... Eric Faulhaber

05:39 PM Feature #1910: add schema conversion support for sequences

So far the discussion has centered around the conversion of business logic references to sequences, but the highest p... Eric Faulhaber

01:33 PM Feature #1910: add schema conversion support for sequences

From progress.g:... Greg Shah

11:43 AM Feature #1910: add schema conversion support for sequences

The key point here is that the assignment style statements should already be working without duplicating the assignme... Greg Shah

11:40 AM Feature #1910: add schema conversion support for sequences

... Greg Shah

10:54 AM Feature #1910: add schema conversion support for sequences

I can now confirm that the statements also need "EQUALS! expr" at the end. Indeed, the syntax is stupid, but the antl... Ovidiu Maxiniuc

10:53 AM Feature #1910: add schema conversion support for sequences

What do you mean?
At this moment, the P2J work just fine, .p file is correctly converted.
Keeping @sequence_funcs@ ... Ovidiu Maxiniuc

10:14 AM Feature #1910: add schema conversion support for sequences

OK, that explains things. When I added support for those, I had no way to test if the unquoted names could be used i... Greg Shah

10:02 AM Feature #1910: add schema conversion support for sequences

As far as I can see, they are already there:... Ovidiu Maxiniuc

09:54 AM Feature #1910: add schema conversion support for sequences

We have not yet written the backing class for the 64-bit integer. It will be called int64 when it is written. But t... Greg Shah

09:48 AM Feature #1910: add schema conversion support for sequences

The answer for 2nd question for now:
I am positive that DYNAMIC- forms require exactly 2 character parameters. This ... Ovidiu Maxiniuc

09:27 AM Feature #1910: add schema conversion support for sequences

Questions:... Greg Shah

02:04 AM Feature #1910: add schema conversion support for sequences

I created the new @com.goldencode.p2j.util.Sequence@ class with the appropriate methods declarations.
However, the P... Ovidiu Maxiniuc

09:38 AM Feature #1580: upgrade Hibernate to latest level

Have you removed all the old versions of the Hibernate jar and its dependencies from the project and from the p2j.mf ... Eric Faulhaber

05:09 AM Feature #1580: upgrade Hibernate to latest level

I have some troubles with Hibernate. I have the small project to deal with different versions of Hibernate and while ... Stanislav Lomany

11/18/2012

05:42 PM Bug #18: issues with ne/equal and true/false conversion in WHERE clauses

We can only use constructs that can be expressed in HQL and which are supported across all major databases (e.g., Ora... Eric Faulhaber