No, sorry you should do retry yourself.
On Fri, Jan 3, 2014 at 4:09 PM, Leng Sheng Hong <darkr...@gmail.com> wrote: > Oh, that's great, thanks for the explaination. > > is there any API in the java library that supports retries for save() (of > a certain exception eg. ConcurrentModificationException)? something like > this will be handle but i guess you will need to query back the same > document before retrying the save. > > https://developers.google.com/appengine/docs/java/datastore/transactions#Java_Uses_for_transactions > > Will be useful if that's in the default orientdb library > > On Friday, 3 January 2014 22:02:33 UTC+8, Andrey Lomakin wrote: > >> All document changes are atomic. >> >> So if you save single document , changes either applied or not, you do >> not need transaction for this kind of behavior. >> It does not matter whether you use SQL or Java. >> >> You provided example with INCREMENT so I thought that may be you want to >> increment field without throwing CME, by simple addition of value to latest >> field value. >> And if you catch ConcurentModificationException you should reload record >> and try again. >> >> >> >> On Fri, Jan 3, 2014 at 2:30 PM, Leng Sheng Hong <dark...@gmail.com>wrote: >> >>> Does it mean that if I save() something without callInRecordLock (but i >>> am using plocal). >>> I will have to do it in a transaction? >>> If i am saving 2 fields, using >>> doc.fields("title", "texthere"); >>> doc.fields("quantity", doc.fields("quantity") + 100 ) //atomic >>> doc.save() >>> >>> I think it should be done in a transaction if concurrent modification >>> exception occured, i will have to reload the document and try saving again? >>> >>> Is that the same behaviour to >>> Update MyTable INCREMENT quantity = 100, set title = "texthere" where >>> @rid = #21:1 >>> >>> >>> On Friday, 3 January 2014 20:14:29 UTC+8, Andrey Lomakin wrote: >>> >>>> Hi, >>>> What do you mean when write about atomic ? increment without >>>> concurrent modification exception ? >>>> If you use embedded storage you can lock records on storage level , and >>>> then release them. >>>> >>>> You may use com.orientechnologies.orient.core.storage.OStorage# >>>> callInRecordLock but please use it with care, to avoid deadlocks. >>>> >>>> >>>> >>>> >>>> On Fri, Jan 3, 2014 at 12:48 PM, Leng Sheng Hong <dark...@gmail.com>wrote: >>>> >>>>> How do you do a SQL like this in Java api for a document base DB? >>>>> Update MyTable INCREMENT quantity = 100 where @rid = #21:1 >>>>> >>>>> I doubt setting fields and save() is actually atomic? >>>>> doc.fields("quantity", doc.fields("quantity") + 100 ) >>>>> doc.save() >>>>> >>>>> -- >>>>> >>>>> --- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "OrientDB" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to orient-databa...@googlegroups.com. >>>>> >>>>> For more options, visit https://groups.google.com/groups/opt_out. >>>>> >>>> >>>> >>>> >>>> -- >>>> Best regards, >>>> Andrey Lomakin. >>>> >>>> Orient Technologies >>>> the Company behind OrientDB >>>> >>>> -- >>> >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "OrientDB" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to orient-databa...@googlegroups.com. >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >> >> >> >> -- >> Best regards, >> Andrey Lomakin. >> >> Orient Technologies >> the Company behind OrientDB >> >> -- > > --- > You received this message because you are subscribed to the Google Groups > "OrientDB" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to orient-database+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. > -- Best regards, Andrey Lomakin. Orient Technologies the Company behind OrientDB -- --- You received this message because you are subscribed to the Google Groups "OrientDB" group. To unsubscribe from this group and stop receiving emails from it, send an email to orient-database+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
