mwalk.visitor
Class ExportVisitor

java.lang.Object
  |
  +--mwalk.visitor.AbstractVisitor
        |
        +--mwalk.visitor.PrintVisitor
              |
              +--mwalk.visitor.ExportVisitor

public class ExportVisitor

extends PrintVisitor

implements DownVisitor

A visitor that exports an ascii representation of the current tree.

Version:

1.0

Author:

Robert Chalmers

Field Summary

private static java.lang.String	CFG_BASE Base of keys in configuration file
private static java.lang.String	DEF_FILENAME Default file name if none supplied
protected int	nextID Integer count used to assign virtual IDs to nodes
protected boolean	showIP Whether to export true IP address or whether to mangle it

Fields inherited from class mwalk.visitor.PrintVisitor

CFG_BASE, def_filename, filename, ps

Fields inherited from class mwalk.visitor.AbstractVisitor

CFG_BASE, eval, seen, verbose

Constructor Summary

ExportVisitor()
Default constructor.

ExportVisitor(java.lang.String filename)
Constructor.

Method Summary

boolean	again(Tree tree) Determine whether to walk the tree again.
protected java.lang.String	getID(TreeNode node) Return the node's ID.
boolean	init(Tree tree) Initialize visitor.
boolean	prefix() Whether to visit prior to visiting parent/children.
void	reset(Tree tree) Reset visitor state.
java.lang.Object	visitDown(Tree tree, TreeNode node) Visit the current node prior to visiting children.

Methods inherited from class mwalk.visitor.PrintVisitor

getChildren, getFilename, printData, printData, printHeader, setFilename

Methods inherited from class mwalk.visitor.AbstractVisitor

cfgBoolean, cfgInt, cfgString, cfgVisitor, evaluator, evaluator, getParents, getReceivers, haveSeen, haveVisited, markSeen, markVisited, nextReceiver, postfix, verbose, visitDown, visitUp, visitUp, walkDown, walkUp

Methods inherited from class java.lang.Object

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

Field Detail

CFG_BASE

private static final java.lang.String CFG_BASE

Base of keys in configuration file

DEF_FILENAME

private static final java.lang.String DEF_FILENAME

Default file name if none supplied

showIP

protected boolean showIP

Whether to export true IP address or whether to mangle it

nextID

protected int nextID

Integer count used to assign virtual IDs to nodes

Constructor Detail

ExportVisitor

public ExportVisitor()

Default constructor.

ExportVisitor

public ExportVisitor(java.lang.String filename)

Constructor.

Parameters:

String - export filename

Method Detail

prefix

public boolean prefix()

Description copied from interface: Visitor

Whether to visit prior to visiting parent/children.

Overrides:

prefix in class AbstractVisitor

Tags copied from interface: Visitor

Returns:

boolean whether to visit prior

init

public boolean init(Tree tree)

Initialize visitor.

Overrides:

init in class PrintVisitor

Parameters:

Tree - current tree instance

reset

public void reset(Tree tree)

Reset visitor state.

Overrides:

reset in class AbstractVisitor

Parameters:

Tree - current tree instance

again

public boolean again(Tree tree)

Determine whether to walk the tree again.

Overrides:

again in class AbstractVisitor

Parameters:

Tree - current tree instance

Returns:

boolean whether to walk again

visitDown

public java.lang.Object visitDown(Tree tree,
                                  TreeNode node)

Visit the current node prior to visiting children.

Specified by:

visitDown in interface DownVisitor

Overrides:

visitDown in class AbstractVisitor

Parameters:

Tree - current tree instance

TreeNode - current node

Returns:

Object optional return value to pass back along the path

Throws:

VisitException - if a problem ocurred during visit

getID

protected java.lang.String getID(TreeNode node)

Return the node's ID. If showIP is not true, then the IP address will be mangled first.

Parameters:

TreeNode - current node

Returns:

String node's ID