org.apache.ignite.internal.util.lang

Class GridTreePrinter<T>

java.lang.Object

org.apache.ignite.internal.util.lang.GridTreePrinter<T>

public abstract class GridTreePrinter<T>
extends Object

Abstract tree structure printer.

Constructor Summary

Constructors

Constructor and Description
GridTreePrinter()

Method Summary

Modifier and Type	Method and Description
protected abstract String	formatTreeNode(T treeNode)
protected abstract List<T>	getChildren(T treeNode) Returns list of tree node children.
String	print(T rootNode)
void	print(T rootNode, Appendable a)

Methods inherited from class java.lang.Object

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

Constructor Detail

GridTreePrinter

public GridTreePrinter()

Method Detail

print

public void print(T rootNode,
                  Appendable a)
           throws IOException

Parameters:

rootNode - Root tree node.

a - Output.

Throws:

IOException

print

public String print(T rootNode)

Parameters:

rootNode - Root tree node.

Returns:

String representation of the tree.

getChildren

protected abstract List<T> getChildren(T treeNode)

Returns list of tree node children.

Parameters:

treeNode - The tree node.

Returns:

List of children (possibly empty, if it is a leaf page) or null if the node can't be read (e.g., is locked).

formatTreeNode

protected abstract String formatTreeNode(T treeNode)

Parameters:

treeNode - Tree node.

Returns:

String representation.