Thanks Luca! Arrays works great. On Sunday, April 13, 2014 8:56:19 PM UTC+2, Lvc@ wrote: > > Hi Pawel, > good idea. It's already in "develop" branch. Usage: > > return [ $a, $b ] > > and also maps: > > return [ 'first' : $a, 'second' : $b ] > > Lvc@ > > > > On 13 April 2014 13:40, Pawel K. <[email protected] <javascript:>> wrote: > >> Thanks Luca. I checked it in my code and works as expected. >> btw. It would be nice to have ability to return array of records (or >> records versions) in RETURN clause. It would give an ability to refresh >> client side objects without going back to the database. >> Also is needed for multi records creations in the script (i.e. couple of >> edges). >> >> Pawel >> >> >> >> On Saturday, April 12, 2014 1:18:26 AM UTC+2, Lvc@ wrote: >> >>> Hi Pawel, >>> that was a problem of re-using of context variables on SQL UPDATE. Now >>> It's fixed in "develop" branch. >>> >>> I've created also the new command "script <language>" in console >>> allowing multi-lines commands. Example: >>> >>> orientdb {pawel}> script sql >>> [Started multi-line command. Type just 'end' to finish and execute] >>> begin >>> let var1 = INSERT INTO Address CONTENT {Town:"Wroclaw",Zip:0} >>> let var2 = INSERT INTO University CONTENT {Name:"Pwr"} >>> let var3 = UPDATE $var1 ADD in_EHasCorrespondenceAddress = $var2 RETURN >>> AFTER >>> let var3a = UPDATE $var2 ADD out_EHasCorrespondenceAddress = $var1 RETURN >>> AFTER >>> commit >>> return 1 >>> end >>> >>> Server side script executed in 0,006000 sec(s). Value returned is: 1 >>> >>> >>> Issue https://github.com/orientechnologies/orientdb/issues/2216 >>> >>> Lvc@ >>> >>> >>> >>> On 5 April 2014 22:08, Pawel K. <[email protected]> wrote: >>> >>>> Guys, >>>> Do you see any reason why such sql batch, does NOT create bidirectional >>>> link? >>>> >>>> begin >>>> let var1 = INSERT INTO Address CONTENT {Town:"Wroclaw",Zip:0} >>>> let var2 = INSERT INTO University CONTENT {Name:"Pwr"} >>>> let var3 = UPDATE $var1 ADD in_EHasCorrespondenceAddress = $var2 >>>> RETURN AFTER >>>> let var3a = UPDATE $var2 ADD out_EHasCorrespondenceAddress = $var1 >>>> RETURN AFTER >>>> commit >>>> return 1 >>>> >>>> It produces 2 records, but second does NOT have the link. When I >>>> replace the ordering in the script always second created vertex has missed >>>> link. >>>> >>>> #18:0 v1 Address@Town:"Wroclaw",Zip:0,in_EHasCorrespondenceAddress:[# >>>> 56:0] >>>> #56:0 v1 University@Name:"Pwr" >>>> >>>> Thanks in advance >>>> Pawel >>>> >>>> PS. I know that I can use CREATE EDGE in that case but for some reason >>>> Im using provided case. >>>> >>>> >>>> On Friday, April 4, 2014 4:19:36 PM UTC+2, Lvc@ wrote: >>>> >>>>> Hi Stefano, >>>>> if you need a more complex language set "javascript" and use JS as >>>>> language allowing more complex thing: https://github.com/orientechno >>>>> logies/orientdb/wiki/SQL-batch >>>>> >>>>> About rollback, if any exception occurs, the tx is automatically >>>>> rollbacked. >>>>> >>>>> Lvc@ >>>>> >>>>> >>>>> On 4 April 2014 16:02, Stefano Migliucci <[email protected]> wrote: >>>>> >>>>>> Hi, >>>>>> how is possible to use "rollback" command? >>>>>> Do we need something like IF, TRY/CATCH, etc? >>>>>> Can you post an example? >>>>>> >>>>>> Stefano >>>>>> >>>>>> Il giorno lunedì 31 marzo 2014 20:46:31 UTC+2, Lvc@ ha scritto: >>>>>> >>>>>>> Hi all, >>>>>>> OrientDB allowed to execute arbitrary script written in Javascript >>>>>>> or any scripting language installed in the JVM. Well, starting from now >>>>>>> we >>>>>>> created a minimal SQL engine to allow batch of commands. >>>>>>> >>>>>>> Batch of commands are very useful when you have to execute multiple >>>>>>> things at the server side avoiding the network roundtrip for each >>>>>>> command. >>>>>>> >>>>>>> Example to create a new vertex in a transaction and attach it to an >>>>>>> existent vertex by creating a new edge between them: >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> *beginlet account = create vertex Account set name = 'Luke'let city >>>>>>> = select from City where name = 'London'let edge = create edge Lives >>>>>>> from >>>>>>> $account to $city retry 100 commitreturn $edge* >>>>>>> >>>>>>> It's plain OrientDB SQL, but with few news: >>>>>>> >>>>>>> - *begin* -> begins a transaction >>>>>>> - *rollback* -> rollbacks an active transaction >>>>>>> - *commit* -> commits an active transaction >>>>>>> - *let <variable> = <command>* -> executes a command and assign >>>>>>> it in the context as . That variable can be used in further commands >>>>>>> by >>>>>>> prefixing it with $ >>>>>>> - *return* <variable>|<value>|null -> returns a value instead of >>>>>>> last command result (default >>>>>>> >>>>>>> Note also the usage of* $account *and* $city* on further SQL >>>>>>> commands. >>>>>>> >>>>>>> *Java API* >>>>>>> >>>>>>> This can be used by Java API with: >>>>>>> >>>>>>> database.open("admin", "admin"); >>>>>>> String cmd = "begin\n";cmd += "let a = create vertex set script = >>>>>>> true\n";cmd += "let b = select from v limit 1\n";cmd += "let e = create >>>>>>> edge from $a to $b retry 100\n";cmd += "commit\n";cmd += "return $e"; >>>>>>> >>>>>>> OIdentifiable edge = database.command(new OCommandScript("sql", >>>>>>> cmd)).execute(); >>>>>>> >>>>>>> Remember to put one command per line (postfix it with \n). >>>>>>> >>>>>>> *HTTP REST API* >>>>>>> >>>>>>> And via HTTP REST interface (https://github.com/orientechn >>>>>>> ologies/orientdb/issues/2056). Execute a POST against /batch URL by >>>>>>> sending this payload: >>>>>>> >>>>>>> { "transaction" : true, >>>>>>> "operations" : [ >>>>>>> { >>>>>>> "type" : "script", >>>>>>> "language" : "sql", >>>>>>> "script" : [ "let account = create vertex Account set name = >>>>>>> 'Luke'", >>>>>>> "let city =select from City where name = 'London'", >>>>>>> "create edge Lives from $account to $city retry 100" >>>>>>> ] >>>>>>> } >>>>>>> ]} >>>>>>> >>>>>>> >>>>>>> Hope this new feature will simplify your development improving >>>>>>> performance. >>>>>>> >>>>>>> What about having more complex constructs like IF, FOR, etc? If you >>>>>>> need more complexity, I suggest you to use Javascript as language that >>>>>>> already support all these concepts. >>>>>>> >>>>>>> Lvc@ >>>>>>> >>>>>>> >>>>>>> PS: For more information look at issues -> https://github.com/ >>>>>>> orientechnologies/orientdb/issues/2176 and https://github.com/ >>>>>>> orientechnologies/orientdb/issues/2056 >>>>>>> >>>>>>> -- >>>>>> >>>>>> --- >>>>>> 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 [email protected]. >>>>>> >>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>> >>>>> >>>>> -- >>>> >>>> --- >>>> 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 [email protected]. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> -- >> >> --- >> 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 [email protected] <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > >
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