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| 11:49 |
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Quest |
what are good parsers for a. A fixed lenght file / feed that is read at once in full and b. a continious feed that is streaming in constantly |
| 11:54 |
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Quest |
xml ^ |
| 11:56 |
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tjsnell |
javabot has a good list but you're not there |
| 11:58 |
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Quest |
there are many like jdom. but needed use case comparison |
| 11:58 |
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Quest |
brb |
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| 14:10 |
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sfisque |
you could create a parser grammar and have javacc/antlr/sablecc create the parser engine for you |
| 14:49 |
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neuro_sys |
damn this small project goes so neat and fun |
| 14:50 |
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jieryn |
anyone using tomee and standard bundle of openjpa and hsql ? i can not get uniqueconstraints to be honored |
| 15:01 |
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sfisque |
explain |
| 15:03 |
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| 15:03 |
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brixon_12234 |
hi |
| 15:03 |
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brixon_12234 |
is this the place you go to complain about enterprise java? |
| 15:04 |
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| 15:07 |
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jieryn |
i'm updating an example project which demonstrates it |
| 15:26 |
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jieryn |
sfisque: https://github.com/jieryn/javaee-example |
| 15:26 |
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jieryn |
UserDAOTest#create2 should take an exception because of a unique constraint, but it doesn't |
| 15:27 |
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jieryn |
we persist two User @Entity that have the same email address, which is a @Table(@UniqueConstraint)) |
| 15:42 |
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ramen_ joined ##javaee |
| 15:46 |
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sfisque |
are you committing between the creates? |
| 15:48 |
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sfisque |
and what is the PK for your user table? if it is email, what you're doing is a create by a followup modify. in jpa, as long as the entities do not do anything "pathological" in their hashcode and equals methods, if the PK == PK, then they are the same object |
| 15:49 |
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whartung |
either way the DB will bitch if it's unique and and you're violating the constraint, but you won't get that message until you commit |
| 15:49 |
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whartung |
or at least flush |
| 15:51 |
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sfisque |
if create() does a detection and persist/updates accordingly (aka, the saveOrUpdate() method of hibernate) then there's no guarantee of that collision because the PKs are the same on the object, thus the first would be detected as a insert and the second one an update. i havent done a thorough investigation, but i'm offering some possible failure points that can be investigated |
| 15:52 |
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whartung |
and you also have to consider that all JPA operations are cached. You can do an em.update(duplicateEntity); and it will WORK, it won't fail until you commit or flush the transaction, which is easily far and away from where the insert occurred (such as the SB boundary) |
| 15:53 |
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whartung |
so it's a different mind set from when you would run a SQL statement and expect it to instantly take affect. |
| 15:53 |
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whartung |
(or fail) |
| 15:55 |
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jieryn |
sfisque: if you look at the example project i have there... |
| 15:55 |
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sfisque |
aye. generally, the transaction opens when you enter an EJB method (from a non-ejb caller) and closes (commits/rollsback/pauses) when the method returns to "non-ejb space" |
| 15:55 |
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sfisque |
i quickly perused through it |
| 15:56 |
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jieryn |
if there is a user error here, it is in persistence.xml |
| 15:56 |
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jieryn |
even if it is cached, there should be a duplicateentityexception |
| 15:57 |
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sfisque |
what does @Transactional(TransactionMode.ROLLBACK) |
| 15:57 |
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sfisque |
do.. i'm familiar with that usage |
| 15:57 |
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sfisque |
*** i'm not familiar |
| 15:58 |
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jieryn |
per-@Test transaction isolation |
| 15:58 |
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jieryn |
so that one @Test testing create does not interfere with another @Test doing create+delete, e.g. |
| 15:58 |
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jieryn |
i can't imagine why this is not the default, but.. there you have it |
| 15:59 |
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jieryn |
tests should be totally self-contained and not impact anything else, as they are often run in parallel and out of order |
| 15:59 |
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whartung |
I've never see a duplicate entity exception out of JPA, it's always been the DB that complained |
| 16:00 |
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jieryn |
i have |
| 16:01 |
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sfisque |
it depends how you annotate your entities and what the underlying provider does |
| 16:02 |
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sfisque |
i'm wondering if the fact that your transactions are marked rollback, that you're not getting the collision (there's no collision because nothings committed) |
| 16:03 |
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whartung |
you certainly shouldn't get them across transactions. |
| 16:08 |
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jieryn |
the rollback happens after the test |
| 16:08 |
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jieryn |
if i do this testcase in a spring project, openjpa throws the exception |
| 16:08 |
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jieryn |
but my buildSchema in persistence.xml is much different |
| 16:09 |
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jieryn |
<property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema(ReadSchema=true, SchemaAction='refresh', PrimaryKeys=true, ForeignKeys=true, Indexes=true)" /> |
| 16:09 |
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whartung |
if you flush the enity manager, you will probably get the exception, even with rollback. flushing the transaction played the SQL against the DB, but since you're still in a transaction, the rollback will undo the changes. |
| 16:09 |
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jieryn |
if i do this in tomee, i am taking a lot of errors.. i think hsqldb sucks, personally, but.. it works in derby |
| 16:09 |
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jieryn |
ok let me try |
| 16:13 |
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jieryn |
ok, that triggers it |
| 16:19 |
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jieryn |
awesome :) |
| 16:21 |
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| 16:28 |
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sfisque |
congrats :-) |
| 16:30 |
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jieryn |
thanks, sfisque and whartung :) |
| 16:30 |
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whartung |
yw |
| 16:37 |
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sfisque |
npnp, code strong! |
| 17:26 |
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| 20:20 |
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| 20:50 |
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| 22:49 |
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roger_ joined ##javaee |
| 22:49 |
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roger_ |
hello |
| 22:49 |
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roger_ |
tjsnell: I have doubt |
| 22:50 |
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tjsnell |
we all do |
| 22:50 |
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whartung |
the universe vexes us, thus doubt. |
| 22:50 |
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roger_ |
tjsnell: I new to Java |
| 22:50 |
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roger_ |
tjsnell: What is super and this |
| 22:50 |
|
roger_ |
I just cant understand |
| 22:51 |
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tjsnell |
stuff any decent tutorial or book will teach you |
| 22:51 |
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roger_ |
If going to do certification |
| 22:52 |
|
roger_ |
I'm* |
| 22:53 |
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roger_ |
whartung: Bro please answer |
| 22:53 |
|
roger_ |
I'm getting confused |
| 22:53 |
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whartung |
answer what? LIke tjsnell said, sounds like you need to hit the books. |
| 22:54 |
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tjsnell |
you'll pass |
| 22:54 |
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roger_ |
what type of books |
| 22:54 |
|
tjsnell |
quantum physics |
| 22:54 |
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roger_ |
tjsnell: Have you done Certification ? |
| 22:54 |
|
tjsnell |
hell no |
| 22:54 |
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whartung |
rectangular shaped ones, 2-3" thick, with thin pieces of paper all stacked together and glued on one edge |
| 22:55 |
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tjsnell |
they are very useful though |
| 22:55 |
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tjsnell |
you put that on your resume and we're most likely to pass |
| 22:56 |
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roger_ |
Are you teasing me |
| 22:56 |
|
whartung |
when I see a Certification, I see someone who knows what ingredients are, but doesn't, necessarily, know how to cook. |
| 22:57 |
|
tjsnell |
roger_: you're some stupid chicken shit who thinks they are clever by being anonymous |
| 22:57 |
|
tjsnell |
big man, hiding who you really are |
| 22:57 |
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tjsnell |
impressed |
| 22:57 |
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tjsnell |
ignored |
| 22:57 |
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roger_ |
tjsnell: ?? |
| 22:57 |
|
roger_ |
Wow! |
| 22:58 |
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sfisque |
you can ignore him, he vacillates between abrasive and amenable |
| 22:58 |
|
whartung |
heh |
| 22:58 |
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tjsnell |
he's a troll |
| 22:58 |
|
tjsnell |
it's rather obvious |
| 22:58 |
|
roger_ |
tjsnell: He is mod in Java channel |
| 22:59 |
|
roger_ |
sfisque: Yes |
| 22:59 |
|
sfisque |
regardless, he (rog) asked questions and you responded in a way that was uncalled for |
| 22:59 |
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tjsnell |
nah |
| 22:59 |
|
tjsnell |
if he asked real questions I'd respond well |
| 23:00 |
|
tjsnell |
I didn't jump on a question to the room I responded to direct questioning |
| 23:00 |
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roger_ |
tjsnell: lol |
| 23:00 |
|
roger_ |
Do you think this was stupid question |
| 23:00 |
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tjsnell |
here I'd never just jump in a thread like that even if I thought it completely inane |
| 23:01 |
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sfisque |
my thought on the question is not in question :P |
| 23:01 |
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sfisque |
but last i checked this channel wasnt created for your privilege ot drop judgement on people or their questions |
| 23:01 |
|
tjsnell |
if someone is going to distract me from work then I expect better |
| 23:01 |
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tjsnell |
I've never asked for anything here |
| 23:01 |
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tjsnell |
I only responded to someone |
| 23:02 |
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sfisque |
either asnwer or idle, no but you give a lot that isnt asked for |
| 23:02 |
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tjsnell |
he's a troll, directly addressed me with a troll question and I responded |
| 23:02 |
|
tjsnell |
the powers that be can decide to do whatever with that |
| 23:02 |
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roger_ |
tjsnell: I'm not a troll |
| 23:02 |
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sfisque |
so, in your wisdom, you decided to "feed the trolls"…. |
| 23:02 |
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sfisque |
bright |
| 23:02 |
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tjsnell |
ok, you're ignored too until later |
| 23:03 |
|
* sfisque |
shrugs |
| 23:03 |
|
tjsnell |
I didn't insult you and won't |
| 23:05 |
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roger_ |
tjsnell: If you dont know the answer dont accuse me as troll :/ |
| 23:06 |
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roger_ |
people please remove Core Java (Java SE) |
| 23:06 |
|
roger_ |
in the title |
| 23:11 |
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| 23:11 |
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| 23:13 |
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sfisque |
wb |
| 23:15 |
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whartung |
I guess I'm not an operator here any more :) |
| 23:15 |
|
whartung |
kicked from the team... |
| 23:19 |
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roger_ |
I dont think anyone over here is above 1 year experience in java :/ |
| 23:19 |
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roger_ left ##javaee |
| 23:19 |
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whartung |
ok |
