java - Why database contraints in HSQLDB are only checked during a commit when using transactions in Hibernate? -

-

i spotted odd behavior in hsql, seems when using database transactions database contraints not checked during sql inserts during sql commits , when transaction rollbacked not checked @ all.

i have spring integration test:

@runwith(springjunit4classrunner.class) @transactionconfiguration(defaultrollback=true, transactionmanager="transactionmanager") @transactional public class integrationtest {

with test creates new entity instance , calls hibernate's persist on it.

it works fine, when change defaultrollback false fails:

caught exception while allowing testexecutionlistener [org.springframework.test.context.transaction.transactionaltestexecutionlistener@517a2b0] process 'after' execution test: method [public void myintegrationtest.test()], instance [myintegrationtest@546e61d5], exception [null] org.springframework.dao.dataintegrityviolationexception: not execute statement; sql [n/a]; constraint [null]; nested exception org.hibernate.exception.constraintviolationexception: not execute statement   @ org.springframework.orm.hibernate4.sessionfactoryutils.converthibernateaccessexception(sessionfactoryutils.java:161)   @ org.springframework.orm.hibernate4.hibernatetransactionmanager.converthibernateaccessexception(hibernatetransactionmanager.java:681)   @ org.springframework.orm.hibernate4.hibernatetransactionmanager.docommit(hibernatetransactionmanager.java:563)   @ org.springframework.transaction.support.abstractplatformtransactionmanager.processcommit(abstractplatformtransactionmanager.java:757)   @ org.springframework.transaction.support.abstractplatformtransactionmanager.commit(abstractplatformtransactionmanager.java:726) ... caused by: java.sql.sqlintegrityconstraintviolationexception: integrity constraint violation: not null check constraint; sys_ct_10120 table: mytable column: mycolumn

this seems correct, because indeed code did not set mycolumn atttribute in entity before calling persist on it.

questions:

  • why database contraints not checked during inserts during commits?
  • why when doing rollback database contraints not checked?

[posting @a_horse_with_no_name's answer, able close question].

my orm (hibernate) not sending queries database until commit. if transaction ended rollback queries not sent database @ all. making sure flush() called (flushmode.always) after every persis() fixed issue.


Comments

Post a Comment

Popular posts from this blog

ruby - Trying to change last to "x"s to 23 -

-
i have been playing around irb , have string looks this: irb(main):072:0> puts ["[\"4354 5432 5432 xxxxx\", \"6547 6547 8543 xxxxx\", \"2344 6543 6674 xxxxx\", \"2346 6236 7543 xxxxx\", \"1273 5585 5587 xxxxx\"]"] => nil irb(main):073:0> what want gsub last 2 "x" s of each 17 digit combination, 23 . what i've tried far (i've been using rubular): a.gsub(/\d[x]/,"23") <= grabs "x" s i'm close a.gsub(/\w[x{2}]/,"23") <= grabs "x" s grabs two digits each combination. is there easier way i'm not understanding? a.gsub(/\d{4} \d{4} \d{4} xxx\kxx/, '23') \d{4} = 4 digits what \k drop matched far. can use don't replace entire number, still able validate have in desired format.
Read more

jquery - Clone last and append item to closest class -

-
this bare-bones code on page: <div class="list-container"> <div class="single-list-item"> <button>remove</button> </div> <div class="single-list-item"> <button>remove</button> </div> <div class="single-list-item"> <button>remove</button> </div> </div> <p><button class="add-list-item">add</button></p> <div class="list-container"> <div class="single-list-item"> <button>remove</button> </div> <div class="single-list-item"> <button>remove</button> </div> <div class="single-list-item"> <button>remove</button> </div> </div> <p><button class="add-list-item">add</button></p> <di...
Read more

css - Can I use the :after pseudo-element on an input field? -

-
i trying use :after css pseudo-element on input field, not work. if use span , works ok. <style type="text/css"> .mystyle:after {content:url(smiley.gif);} .mystyle {color:red;} </style> this works (puts smiley after "buu!" , before "some more") <span class="mystyle">buuu!</span>a more this not work - colors somevalue in red, there no smiley. <input class="mystyle" type="text" value="somevalue"> what doing wrong? should use pseudo-selector? note: cannot add span around input , because being generated third-party control. :after , :before not supported in internet explorer 7 , under, on elements. it's not meant used on replaced elements such form elements (inputs) , image elements . in other words it's impossible pure css. however if using jquery can use $(".mystyle").after("add smiley here"); api docs on .after to ...
Read more