Module graph.explorer

Package de.grogra.graph.wrapped.parametric

Class ParametricVisitor

java.lang.Object

de.grogra.graph.VisitorImpl

de.grogra.graph.wrapped.parametric.ParametricVisitor

All Implemented Interfaces:

Visitor

public class ParametricVisitor
extends VisitorImpl

Field Summary

Fields inherited from class de.grogra.graph.VisitorImpl

pattern, state

Fields inherited from interface de.grogra.graph.Visitor

STOP

Constructor Summary

Constructors

Constructor	Description
ParametricVisitor()

Method Summary

Modifier and Type	Method	Description
Node	getClone(Node src)
void	init(GraphState gs, EdgePattern pattern, ObjectList params)
Object	visitEnter(Path path, boolean node)	Informs this visitor about a node or edge in the graph.
Object	visitInstanceEnter()	Informs this visitor about the beginning of an instantiation.

Methods inherited from class de.grogra.graph.VisitorImpl

getGraphState, init, visitInstanceLeave, visitLeave

Methods inherited from class java.lang.Object

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

Constructor Details

ParametricVisitor

public ParametricVisitor()

Method Details

init

public void init(GraphState gs,
 EdgePattern pattern,
 ObjectList params)

visitEnter

public Object visitEnter(Path path,
 boolean node)

Description copied from interface: Visitor

Informs this visitor about a node or edge in the graph. path contains the path from the root up to and including the node or, in case an edge is visited, the edge and its terminal node. Later on, Visitor.visitLeave(java.lang.Object, de.grogra.graph.Path, boolean) will be invoked with the returned value of this invocation, path and node as arguments. If this method returns Visitor.STOP, the corresponding visitLeave-method will be invoked immediately after this method, i.e., the visitor does not dive more deeply in the hierarchy. Otherwise, if a node is visited and there are instantiations associated with or edges connected with it (regardless of their direction), their corresponding visitor methods will be invoked inbetween. Likewise, if an edge is visited, its indicent terminal node will be visited next.

Specified by:

visitEnter in interface Visitor

Overrides:

visitEnter in class VisitorImpl

Parameters:

path - current path

node - do we enter a node or an edge?

Returns:

value to pass to visitLeave, may be Visitor.STOP

visitInstanceEnter

public Object visitInstanceEnter()

Description copied from interface: Visitor

Informs this visitor about the beginning of an instantiation. This method invokation is nested immediately within visitEnter/visitLeave of a node. Later on, Visitor.visitInstanceLeave(Object) will be invoked with the returned value of this invocation as argument. If this method returns Visitor.STOP, the visitInstanceLeave-method will be invoked immediately after this method, i.e., the visitor does not dive into the instantiation. Otherwise, the instantiation is performed, starting with an edge.

Specified by:

visitInstanceEnter in interface Visitor

Overrides:

visitInstanceEnter in class VisitorImpl

Returns:

value to pass to visitInstanceLeave, may be Visitor.STOP

getClone

public Node getClone(Node src)