Package 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

Fields

Modifier and Type	Field	Description
protected Map<String,TopicFetchInstruction>	fetchInstructions
protected static final EnginePersistenceLogger	LOG
protected int	maxResults
protected List<QueryOrderingProperty>	orderingProperties
protected String	workerId

Constructor Summary

Constructors

Constructor	Description
FetchExternalTasksCmd(String workerId, int maxResults, Map<String,TopicFetchInstruction> instructions)
FetchExternalTasksCmd(String workerId, int maxResults, Map<String,TopicFetchInstruction> instructions, boolean usePriority, List<QueryOrderingProperty> orderingProperties)

Method Summary

Modifier and Type	Method	Description
List<LockedExternalTask>	execute(CommandContext commandContext)
protected void	filterOnOptimisticLockingFailure(CommandContext commandContext, List<LockedExternalTask> tasks)
protected List<QueryOrderingProperty>	orderingPropertiesWithPriority(boolean usePriority, List<QueryOrderingProperty> queryOrderingProperties)
protected void	validateInput()

Methods inherited from class java.lang.Object

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

Field Details

LOG

protected static final EnginePersistenceLogger LOG

workerId

protected String workerId

maxResults

protected int maxResults

orderingProperties

protected List<QueryOrderingProperty> orderingProperties

fetchInstructions

protected Map<String,TopicFetchInstruction> fetchInstructions

Constructor Details

FetchExternalTasksCmd

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

FetchExternalTasksCmd

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

Method Details

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()

orderingPropertiesWithPriority

protected List<QueryOrderingProperty> orderingPropertiesWithPriority(boolean usePriority,
 List<QueryOrderingProperty> queryOrderingProperties)