topic Re: Activiti UUIDGenerator can generate a number? in Alfresco Forum

Activiti UUIDGenerator can generate a number?

gjaya26 — Wed, 28 Jun 2017 13:14:34 GMT

Hi,We have a use case where we generate about 30K workflows every quarter. We are creating workflows, using the org.activiti.engine.impl.persistence.entity.ProcessDefinitionEntity.createProcessInstance(businesskey) API.We are currently using the default DBIdGenarator to generate process instance ids

Re: Activiti UUIDGenerator can generate a number?

Anonymous — Fri, 30 Jun 2017 03:12:26 GMT

> Please advise if we can get the UUIDGenerator to generate numbers instead of the above alpha numeric characters?

UUIDGenerator generates UUID. UUID (Java Platform SE 8 )

> Is there a way we can increase the block size of the sequence in the DBIdGenerator class?

You can set the block size of the DBIdGenerator by ProcessEngineConfiguration.setIdBlockSize.

ProcessEngineConfiguration (Activiti - Engine 5.22.0 API)

But, if you want rigor, you should make your original IdGenerator by overriding IdGenerator like db sequence.

And you set your original IdGenerator to ProcessEngineConfiguration by ProcessEngineConfigurationImpl.setIdGenerator.

Re: Activiti UUIDGenerator can generate a number?

gjaya26 — Fri, 30 Jun 2017 15:17:44 GMT

Thank you daisuke. Do you know what idblocksize should I set to generate 30000 workflows? Do you know of any set guidelines.

Thank you!

Re: Activiti UUIDGenerator can generate a number?

Anonymous — Fri, 30 Jun 2017 21:08:43 GMT

I have no guidelines.

> Do you know what idblocksize should I set to generate 30000 workflows?

Regardless of the setting of idBlockSize, DBIdGenerator can generate 30000 id.

If you set idBlockSize, you change the number of times that DBIdGenerator acess table( act_ge_property next.dbid) to get next dbid.

Activiti User Guide