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Tuple tree node visitor interface. Note that this is a more specific variant of the extrinsic visitor pattern. It has the following advantages over the standard visitor pattern:
TupleNode.accept(TupleNodeVisitor)
Method Summary | |
boolean |
canVisit(TupleNode node)
Checks to see if a node can be visited. |
java.util.ArrayList |
getOrder(TupleNode node,
java.util.ArrayList children)
Get the array of children to visit sequentially to determine the order of child visitations. |
boolean |
isPrefix()
Determines whether the visitation order is prefix or postfix. |
void |
setMonitor(VisitorMonitor monitor)
Sets the monitoring which recieves callbacks of notable events from this visitor. |
void |
visit(TupleNode node)
Visits a tree of tuple nodes using a specific visitation order. |
Method Detail |
public void visit(TupleNode node)
node
- the node to visitpublic boolean canVisit(TupleNode node)
node
- the node to be visited
public boolean isPrefix()
public java.util.ArrayList getOrder(TupleNode node, java.util.ArrayList children)
node
- the parent branch nodechildren
- the child node array
public void setMonitor(VisitorMonitor monitor)
monitor
- the monitor instance for the visitor
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