org.eclipse.smila.processing

Interface WorkflowProcessor

All Known Implementing Classes:

BpelWorkflowProcessor

public interface WorkflowProcessor

Interface of WorkflowProcessors. A workflow orchestrates a set of SMILA pipelets (or other components) to process SMILA records. It may use deliberate workflow definition languages, e.g. BPEL.

Author:

jschumacher

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	NAMESPACE_PROCESSOR namespace of SMILA BPEL process names.
static java.lang.String	WORKFLOW_DEFINITION key in workflow definitions for the definition of the workflow.
static java.lang.String	WORKFLOW_NAME key in workflow definitions for the name of the workflow.
static java.lang.String	WORKFLOW_READONLY key in workflow definitions for the readOnly flag, set in getWorkflowDefinition(String) results for predefined workflows.
static java.lang.String	WORKFLOW_TIMESTAMP key in workflow definitions for the timestamp of the workflow, set automatically when defining the workflow.

Method Summary

Methods

Modifier and Type	Method and Description
void	deleteWorkflowDefinition(java.lang.String workflowName)
AnyMap	getWorkflowDefinition(java.lang.String workflowName) get the definition for a given workflow name.
java.util.List<java.lang.String>	getWorkflowNames() get the names of the currently active workflows.
java.lang.String[]	process(java.lang.String workflowName, Blackboard blackboard, java.lang.String[] recordIds) process records on Blackboard service.
void	setWorkflowDefinition(java.lang.String workflowName, AnyMap workflowDefinition)
void	synchronizeWorkflowDefinition(java.lang.String workflowName, boolean isDeleted) reload the workflow definition from persistence and deploy it, or undeploy it.

Field Detail

NAMESPACE_PROCESSOR

static final java.lang.String NAMESPACE_PROCESSOR

namespace of SMILA BPEL process names.

See Also:

Constant Field Values

WORKFLOW_NAME

static final java.lang.String WORKFLOW_NAME

key in workflow definitions for the name of the workflow.

See Also:

Constant Field Values

WORKFLOW_TIMESTAMP

static final java.lang.String WORKFLOW_TIMESTAMP

key in workflow definitions for the timestamp of the workflow, set automatically when defining the workflow.

See Also:

Constant Field Values

WORKFLOW_DEFINITION

static final java.lang.String WORKFLOW_DEFINITION

key in workflow definitions for the definition of the workflow.

See Also:

Constant Field Values

WORKFLOW_READONLY

static final java.lang.String WORKFLOW_READONLY

key in workflow definitions for the readOnly flag, set in getWorkflowDefinition(String) results for predefined workflows.

See Also:

Constant Field Values

Method Detail

process

java.lang.String[] process(java.lang.String workflowName,
                         Blackboard blackboard,
                         java.lang.String[] recordIds)
                           throws ProcessingException

process records on Blackboard service.

Parameters:

workflowName - name of workflow to execute on Ids

blackboard - blackboard to use for processing

recordIds - Ids of records to process.

Returns:

Ids of result records.

Throws:

ProcessingException - error during processing.

getWorkflowNames

java.util.List<java.lang.String> getWorkflowNames()

get the names of the currently active workflows.

Returns:

names of workflows.

getWorkflowDefinition

AnyMap getWorkflowDefinition(java.lang.String workflowName)
                             throws ProcessingException

get the definition for a given workflow name.

Parameters:

workflowName - The workflow name

Returns:

the any object with the definition

Throws:

ProcessingException - error reading the definition.

setWorkflowDefinition

void setWorkflowDefinition(java.lang.String workflowName,
                         AnyMap workflowDefinition)
                           throws ProcessingException

Parameters:

workflowName - The workflow name

workflowDefinition - contains the workflow to add/update and deploy

Throws:

ProcessingException - error during deploy

deleteWorkflowDefinition

void deleteWorkflowDefinition(java.lang.String workflowName)
                              throws ProcessingException

Parameters:

workflowName - The workflow name to delete and undeploy

Throws:

ProcessingException - error during undeploy

synchronizeWorkflowDefinition

void synchronizeWorkflowDefinition(java.lang.String workflowName,
                                 boolean isDeleted)
                                   throws ProcessingException

reload the workflow definition from persistence and deploy it, or undeploy it. This can be called to notify the processor that the definition has been changed by someone else, e.g. another cluster node.

Parameters:

workflowName - the name of the workflow to reload.

isDeleted - true to undeploy workflow locally, false to deploy the currently persisted version.

Throws:

ProcessingException - if the workflow could not be reloaded for any reason.