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Re: [eclipselink-dev] questions while running JPA JUnit tests

Hi Dies,

  I have started looking at your patch.  I have a quick question:

- In DatabaseAccessor, what is the goal of splitting the ignoreFirstRowSettings and the ignoreMaxResultsSettings

-Tom


Dies Koper wrote:
Hi Tom, all

Congrats on the 2.0 release!

I've been continuing running the test sets on the Symfoware platform.
May I ask you for you help with the following three issues?

1. Review of patch

I've added a patch with changes required for a number of tests to run. Could you review them, and if okay, commit them?
https://bugs.eclipse.org/bugs/show_bug.cgi?id=288715

2. Where is table name "SEQUENCE" defined?

I tried renaming all occurrences of the word "SEQUENCE" in the code I could find but still some tests try to create a sequence table with table name SEQUENCE. It starts with the 8th test in the JPA test set: testTransitionToDeferedFailure

which tries a UPDATE SEQUENCE (...).

In the log I see even more:

[junit] [EL Config]: ServerSession(1006920425)--Thread(Thread[main,5,main])--The table generator name defined within [class org.eclipse.persistence.testing.models.jpa.inherited.Alpine] is being defaulted to: SEQUENCE.

and

[junit] [EL Fine]: ServerSession(1006920425)--Connection(753758527)--Thread(Thread[main,5,main])--CREATE TABLE SEQUENCE (SEQ_NAME VARCHAR(50) NOT NULL, SEQ_COUNT DECIMAL(18), PRIMARY KEY (SEQ_NAME))
    [junit] java.sql.SQLException: [SymfoWARE ODBC Driver][SymfoWARE [...]
[junit] at org.eclipse.persistence.testing.tests.jpa.advanced.concurrency.LifecycleJUnitTest.testSetup(LifecycleJUnitTest.java:76)

I believe these might be from the CONCURRENCYA, B and C tables, or ConcurrencyA, B and C entities. Each of them has fieldID.setIsIdentity(true) resp. @GeneratedValue specified but the details of the sequence generators are omitted.

I though it would default to what the platform's createPlatformDefaultSequence() method returns but apparently not.

Many tests fail because of this issue.

3. Table locks during DROP TABLE

In the SymfowarePlatform wiki page you suggested that we should start by trying to get the Core SRG running first. Most are passing now.

Only a few (the ReadAllTest tests, which rely on AutoTableGeneratorBasicTestModel.java) failed I think because of the table lock issue.

The error message is:

Exception Description: 24 objects were read from the database, but
originially there were, 12.

When I run it by itself through the test browser it passes without problems.

Some messages in the finest log let me believe this is because a problem
occurred while recreating the tables: they should have been dropped and
recreated, thereby clearing those old 12 object, but because of the locking issue they were not.

    [junit] Internal Exception: java.sql.SQLException: [SymfoWARE ODBC
Driver][SymfoWARE Server] JYP3913E : Table "PHONE" being used
exclusively by another user.
    [junit] Error Code: -3913
    [junit] Call: drop table PHONE
    [junit] Query: DataModifyQuery(sql="drop table PHONE")
    [junit]     at
org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:324)
[..]
    [junit]     at
org.eclipse.persistence.testing.models.employee.relational.EmployeeSystem.dropTableConstraints(EmployeeSystem.java:86)
    [junit]     at
org.eclipse.persistence.testing.tests.schemaframework.AutoTableGeneratorEmployeeSystem.createTables(AutoTableGeneratorEmployeeSystem.java:32)


This table was created and accessed as follows:

1. drop (index) and table (outside transaction)
   DROP TABLE PHONE

2. create table (and index) (in transaction), same connection
   CREATE TABLE PHONE (EMP_ID NUMERIC(15) NOT NULL, TYPE VARCHAR(15)
NOT NULL, AREA_CODE VARCHAR(3), P_NUMBER VARCHAR(7), PRIMARY KEY
(EMP_ID, TYPE))

3. insert 30 rows (in single transaction), same connection
   INSERT INTO PHONE (TYPE, AREA_CODE, P_NUMBER, EMP_ID) VALUES (?, ?,
?, ?)
    [junit]     bind => [Home, 613, 5551234, 105]

4. drop (index) and table (outside transaction), different connection
   DROP TABLE PHONE
-> SQLException saying PHONE is locked.

I can reproduce this in a simple JDBC application. If I close the
connection used in steps 1-3 before step 4 it works fine.

I can see some session swapping is done in AutoTableGeneratorBasicTestModel#addForcedRequiredSystems() so I tried adding a reset() invocation at the start of its addForcedRequiredSystems() method but that did not help.
How can I make it close the physical connection?
(You mentioned adding logic into TestSystem?)

The lock issue occurs much more often in the JPA test set. The first failing test however is because of the reserved SEQUENCE keyword used as table name, so if you could help me in the right direction with the above three issues I can try move forward with this test set again.

Thanks!
Dies


Tom Ware wrote:
Hi Dies,

FYI: I am working on integrating your initial patch. There are a couple of items I will not be integrating at the moment:

1. Specific references to SymfowarePlatform and isSymfowarePlatform(). These will be left until SymfowarePlatform becomes part of the full product

2. Changes to default SEQUENCE table name to "\"SEQUENCE\"" for our Sessions and project XML (in XMLSessionConfigProject, ObjectPersistenceRuntimeXMLProject and SequencingConfig). This is simply to big a backward compatibility risk since I cannot test these changes on every database platform that EclipseLink is run on by our customers. I am looking for some way of having this information stored on the DatabasePlatform, but at the moment, it is not looking good. Assuming I do not find a good solution, Symfoware users will simply have to explicitly set these items when using our proprietary configuration code (sessions.xml and deployment.xml) We will also have to address anywhere in the tests we choose to run where this is an issue.

I am in the process of running testing on the other changes and I'll let you know when it gets checked in.

-Tom

Dies Koper wrote:
Hi Tom,

I have added the outstanding issues with SQL keywords in table/columns names, and maximum precision. The biggest open issue is of course the drop table restriction. I'm looking forward to hearing what solution(s) you can come up with.

Thanks!
Dies


Tom Ware wrote:
Hi Dies,

I am moving some of the main points of this discussion to the wiki page so I can more easily keep track of where we are:

http://wiki.eclipse.org/EclipseLink/Development/Incubator/Extensions/SymfowarePlatform#Open_Issues

I started by just adding some basics about the main issues that are getting in the way at the moment. I plan to add more detail next week. Please feel free to add other issues I have missed, or more detail.

  As for some of the other things you were wondering about:

1. Your initial patch (including sequencing fixes etc.). I hope to find some time to start integrating it next week

2. EclipseLink bug 286907 (not related to Symfoware platform)- this bug is in the queue and will be addressed in sequence with the other bugs. The fact that you have submitted a patch means it will potentially jump other bugs in the queue. At the moment I am going to focus on the Symfoware Platform issues with my free time, so I can't make any promises about when it will be included.

3. GlassFish bug 9179 (not related to Symfoware platform) - same thing as above, but additionally: we cannot legally make use of the submitted patch until it is attached to EclipseLink bug by someone with IP rights

I'll get started looking for some solutions next week.
-Tom



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