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Hope you are looking for the API for retrieving the history data. If you want to access the histry log provided by the JBPM you can use the below code
//Enabling the history Service
JPAWorkingMemoryDbLogger workingMemoryDbLogger = new JPAWorkingMemoryDbLogger(knowledgeSession);
// Get the JPA interface for History service
JPAProcessInstanceDbLog historyService = new JPAProcessInstanceDbLog(knowledgeSession.getEnvironment());
JPAProcessInstanceDbLoggives the API for retrieving the available history related data
Another way to implement your on history log is to implement the ProcessEventListener , check the documentation for more details.
thanks Arunf or your reply ...I was looking for more of a UI based page or view to display the logs for audit purpose.
May be I should develop a web based page and retrieve the logs through API and dispaly it.