Hi!
>> Seems like the node and index modifications belong in the same
>> transaction, to make sure any modifications to nodes are always
>> reflected in the indexes as well. Otherwise they could get out of sync
>> if your application crashes after the commit of the first,
>> node-modifying transaction.
> it seems confusing. if indexing actions wrapped inside a transaction
> and the transaction fails, will indexing action automatically get
> rollback? think this example:
Yes, it will be rolled back - that's the point of performing multiple
operations in the same transaction.
/anders
>
> class User{
> public void dosomething(){
> //node actions
> //index actions
> }
> }
>
> class Ext extends ServerPlugin{
> public action(){
> // get an array of users;
> Transaction tx = graphDb.beginTx();
> try
> {
> ... // operations that work with the graph
> for(User u:users){
> u.dosomething();
> }
> tx.success();
> }
> finally
> {
> tx.finish();
> }
> }
>
> }
>
>>
>> /anders
>>
>>
>>>>
>>>>
>>>> /anders
>>>>
>>>>> 4, what's the best practice to do bulk insertion when running (not
>>>>> seed initial data)? i read post says that too many insertions within a
>>>>> transaction may lead to memory problem? what's the proper mount of
>>>>> insertion within a transaction?
>>>>> 5, is there a suggested max length for string/array property? would it
>>>>> be better to put into sql?
>>>>> 6, say a facebook user may "likes" thousands of things, and these
>>>>> things are sparsly connected. in this case, things should be modeled
>>>>> as nodes or array property?
>>>>> 7, where can i find an example to use domain models with serverplugin?
>>>>> i want to put my data in a standalone server and just use the
>>>>> serverplugin, unmanaged extension. should i just put the domain models
>>>>> into the same serverplugin jar?
>>>>> 8, the warning in the documentation about unmanaged extension is
>>>>> scary. what i can see is that people may use bad ways, instead of
>>>>> Iterator/IteratorWrappers. any comment on this?
>>>>> 9, i'm not sure if it's trival: find out users who are only 2
>>>>> relationships a way (use twitter example: my followees' followers),
>>>>> live in same city, group by age and gender. also retrieve all their
>>>>> followees. i want to do the traversal in java, where can i find an
>>>>> examples?
>>>>> 10, i've had horrible experience in turning jvm options. have neo4j
>>>>> been running on Zing JVM, hp nonstop jvm? are they better options?
>>>>>
>>>>> thanks in advance
>>>>>
>>>>>
>>>>> Best regards
>>>>>
>>>>> Linan Wang
>>>>> _______________________________________________
>>>>> Neo4j mailing list
>>>>> User@lists.neo4j.org
>>>>> https://lists.neo4j.org/mailman/listinfo/user
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>>>
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>>>
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>
>
>
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