org.camunda.bpm.engine.impl.cmd
Class FetchExternalTasksCmd

java.lang.Object
  org.camunda.bpm.engine.impl.cmd.FetchExternalTasksCmd

All Implemented Interfaces:

Command<List<LockedExternalTask>>

public class FetchExternalTasksCmd
extends Object
implements Command<List<LockedExternalTask>>

Author:

Thorben Lindhauer, Christopher Zell

Field Summary

protected Map<String,TopicFetchInstruction>	fetchInstructions
protected static EnginePersistenceLogger	LOG
protected int	maxResults
protected boolean	usePriority
protected String	workerId

Constructor Summary

FetchExternalTasksCmd(String workerId, int maxResults, Map<String,TopicFetchInstruction> instructions)

FetchExternalTasksCmd(String workerId, int maxResults, Map<String,TopicFetchInstruction> instructions, boolean usePriority)

Method Summary

List<LockedExternalTask>	execute(CommandContext commandContext)
protected void	filterOnOptimisticLockingFailure(CommandContext commandContext, List<LockedExternalTask> tasks)
protected void	validateInput()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

LOG

protected static final EnginePersistenceLogger LOG

workerId

protected String workerId

maxResults

protected int maxResults

usePriority

protected boolean usePriority

fetchInstructions

protected Map<String,TopicFetchInstruction> fetchInstructions

Constructor Detail

FetchExternalTasksCmd

public FetchExternalTasksCmd(String workerId,
                             int maxResults,
                             Map<String,TopicFetchInstruction> instructions)

FetchExternalTasksCmd

public FetchExternalTasksCmd(String workerId,
                             int maxResults,
                             Map<String,TopicFetchInstruction> instructions,
                             boolean usePriority)

Method Detail

execute

public List<LockedExternalTask> execute(CommandContext commandContext)

Specified by:

execute in interface Command<List<LockedExternalTask>>

filterOnOptimisticLockingFailure

protected void filterOnOptimisticLockingFailure(CommandContext commandContext,
                                                List<LockedExternalTask> tasks)

validateInput

protected void validateInput()