Package concurrent_tree_crawler :: Module navigator_tree_wrapper :: Class NavigatorTreeWrapper

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Class NavigatorTreeWrapper

Wrapper for the tree navigator (AbstractTreeNavigator). It makes sure that accessing our tree representation object TreeAccessor is synchronized with actions executed on AbstractTreeNavigator object. It also handles NavigationExceptions that might occur while using the navigator.

Instance Methods

__init__(self, navigator, tree)

source code

get_current_node(self)

source code

start_in_sentinel(self)

source code

list of strings

get_possible_children(self)
Returns: children names

source code

move_to_child(self, destination_node)

source code

__start_in_root(self)

source code

move_to_parent(self)
Returns: True iff the navigator is currently in the root. source code

process_node_and_check_if_is_leaf(self)
Returns: True if the current node is a leaf, False if it is an internal node. source code

__handle_exception(self, ex, error_message)

source code

__log_exception(self, error_message, ex, error_node)

source code

__log(self, message)

source code

Method Details

init(self, navigator, tree)
(Constructor)

Parameters:

navigator (AbstractTreeNavigator)
tree (AbstractTreeAccessor)

get_possible_children(self)

Returns: list of strings: children names

move_to_child(self, destination_node)

Parameters:

destination_node - AbstractNode

move_to_parent(self)

Returns:: True iff the navigator is currently in the root. It means that the whole tree has been traversed.

process_node_and_check_if_is_leaf(self)

Returns:: True if the current node is a leaf, False if it is an internal node.

__log_exception(self, error_message, ex, error_node)

Parameters:

error_node (AbstractNode)
error_message (string)
ex (Exception)

__log(self, message)

Parameters:

message (string)