org.springframework.cloud.dataflow.core.dsl

Class GraphGeneratorVisitor

java.lang.Object

org.springframework.cloud.dataflow.core.dsl.TaskVisitor

org.springframework.cloud.dataflow.core.dsl.GraphGeneratorVisitor

public class GraphGeneratorVisitor
extends TaskVisitor

Visitor that produces a Graph representation of a parsed task definition. This is suprisingly complicated due to the ability to use labels.

Author:

Andy Clement

Constructor Summary

Constructors

Constructor and Description
GraphGeneratorVisitor()

Method Summary

Modifier and Type	Method and Description
org.springframework.cloud.dataflow.core.dsl.GraphGeneratorVisitor.Context	currentContext()
org.springframework.cloud.dataflow.core.dsl.GraphGeneratorVisitor.Sequence	currentSequence()
void	endVisit() The last call made to a visitor.
Graph	getGraph()
org.springframework.cloud.dataflow.core.dsl.GraphGeneratorVisitor.Context	parentContext()
void	postVisit(FlowNode flow)
void	postVisit(SplitNode split)
void	postVisitSequence(LabelledTaskNode firstNode, int sequenceNumber)
boolean	preVisit(FlowNode flow)
boolean	preVisit(SplitNode split)
boolean	preVisitSequence(LabelledTaskNode firstNode, int sequenceNumber)
void	visit(TaskAppNode taskApp)
void	visit(TransitionNode transition)

Methods inherited from class org.springframework.cloud.dataflow.core.dsl.TaskVisitor

postVisit, postVisit, preVisit, preVisit, startVisit, visit, visit

Methods inherited from class java.lang.Object

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

Constructor Detail

GraphGeneratorVisitor

public GraphGeneratorVisitor()

Method Detail

getGraph

public Graph getGraph()

preVisitSequence

public boolean preVisitSequence(LabelledTaskNode firstNode,
                                int sequenceNumber)

Overrides:

preVisitSequence in class TaskVisitor

Parameters:

firstNode - the first node in the sequence

sequenceNumber - the sequence number, where the primary sequence is 0

Returns:

false to skip visiting the specified sequence

postVisitSequence

public void postVisitSequence(LabelledTaskNode firstNode,
                              int sequenceNumber)

Overrides:

postVisitSequence in class TaskVisitor

endVisit

public void endVisit()

Description copied from class: TaskVisitor

The last call made to a visitor.

Overrides:

endVisit in class TaskVisitor

preVisit

public boolean preVisit(SplitNode split)

Overrides:

preVisit in class TaskVisitor

Parameters:

split - the split which represents things to execute in parallel

Returns:

false to skip visiting this split

postVisit

public void postVisit(SplitNode split)

Overrides:

postVisit in class TaskVisitor

preVisit

public boolean preVisit(FlowNode flow)

Overrides:

preVisit in class TaskVisitor

Parameters:

flow - the flow which represents things to execute in sequence

Returns:

false to skip visiting this flow

postVisit

public void postVisit(FlowNode flow)

Overrides:

postVisit in class TaskVisitor

visit

public void visit(TransitionNode transition)

Overrides:

visit in class TaskVisitor

currentContext

public org.springframework.cloud.dataflow.core.dsl.GraphGeneratorVisitor.Context currentContext()

parentContext

public org.springframework.cloud.dataflow.core.dsl.GraphGeneratorVisitor.Context parentContext()

currentSequence

public org.springframework.cloud.dataflow.core.dsl.GraphGeneratorVisitor.Sequence currentSequence()

visit

public void visit(TaskAppNode taskApp)

Overrides:

visit in class TaskVisitor