concurrency - Retrying after StaleObjectStateException in a hibernate batch -


hibernate version : 3.2.6.ga

spring(transactions) : 3.1.1

i facing in batch process don't have notify end user ,just need reload entities involved & redo work.

however, after catching staleobjectstateexception & reloading entity, still running staleobjectstateexception..why that?

more details on how reproducing after code...

    @requestmapping("testconcurrent/{entityid}/{version}")     @get     @transactional     public void testconcurrent(@pathvariable("entityid") integer entityid,              @pathvariable("version") integer version){          try{         updatedata(entityid, version);         sessionfactory.getcurrentsession().flush();         }         catch(staleobjectstateexception|optimisticlockexception e){             log.info("retrying due concurrency error");             updatedata(entityid, version);         }         catch(exception e){             log.info("some other error");         }     }       public void updatedata(integer entityid, integer version) {         entity entity = entitydao.getentitybyid(entityid);         entity.setupdated(dateutils.getcurrenttime());             entity.setversion(version.longvalue());              entitydao.createorupdateentity(crp);     }

how reproduce concurrency:

1)i call testconcurrent given object version, stop debug flow @ last line in updatedata method.

2)then call testconcurrent again same object other version, , finish flow. reflects in db instantaneously have flush() after method returns.

3)now when continue first thread(which blocked in step 1), throws staleobjectstateexception expected & gets caught, calls updatedata method again , when fetch object db(entitydao.getentitybyid); throws same staleobjectstate exception again. why should when reloading latest object database?

this exception stacktrace way , not synchronize database state session org.hibernate.staleobjectstateexception: row updated or deleted transaction (or unsaved-value mapping incorrect):


Comments

Post a Comment

Popular posts from this blog

commonjs - How to write a typescript definition file for a node module that exports a function? -

consider, toml node module can use: // toml.d.ts declare module toml { export function parse(value:string):any; } declare module "toml" { export = toml; } then: /// <reference path="../../../../../defs/toml/toml.d.ts"/> import toml = require('toml'); toml.parse(...); however, node module export single function, such 'glob' ( https://github.com/isaacs/node-glob ). the node usage of module be: var glob = require("glob") glob("*.js", {}, callback(err, files) { ... }); you'd naively expect this: // glob.d.ts declare function globs(paths:string, options:any, callback:{(err:any, files:string[]):void; ...but because typescripts 'import' semantics bit strange, seems can use 'import .. = require()' statement alias modules . trying call: /// <reference path="../../../../../defs/glob/glob.d.ts"/> import blog = require('glob'); results in: error ts2072: mod...
Read more

openid - Okta: Failed to get authorization code through API call -

i'm integrating okta own idp server using okta's api. i'm implementing authorization code flow following steps below: in own server, use /api/v1/authn endpoint sessiontoken. use sessiontoken obtain authorization calling endpoint: /oauth2/v1/authorize?client_id=" + clientid + "&sessiontoken=" + sessiontoken + "&response_type=code&response_mode=query&scope=openid&redirect_uri=" + redirecturl + "&state=evanyang&nonce=" it's supposed return response status code 302 , location header containing redirect url code value. however, keep getting response status code 200 , without location header, html body saying "you using unsupported browser." , "javascript disabled on browser." according api documentation: http://developer.okta.com/docs/api/resources/oidc.html#authentication-request , sessiontoken parameter sufficient this: an okta one-time sessiontoken. allows api-based ...
Read more

ios - Change Storyboard View using Seague -

i have following code checks connection server, , depending on want change views if no connection found. nsstring *connect = [nsstring stringwithcontentsofurl:[nsurl urlwithstring:@"http://myserver.com"] encoding:nsutf8stringencoding error:nil]; if (connect == null) { [self performseguewithidentifier:@"network_failure" sender:self]; } else { // other code here } my problem not change views. have added storyboard segue between 2 views identifier of network_failure . not have navigation controller or that, problem? thanks help! no not problem. first of all, in objectivec exists nil object oriented null . must use that. so: if(connect == nil) or better: if(!connect) so due fact nil not same of null , probably code does't enter in if scope . you have been able discover breakpoint. anyway: be sure set trigger segue (line) 2 view controller , , name network_failure (that not best name. should instead view1toview2 ) as, m...
Read more