AbstractNode

java.lang.Object
- com.vividsolutions.jts.index.strtree.AbstractNode

All Implemented Interfaces:

Boundable, Serializable
```
public abstract class AbstractNode
extends Object
implements Boundable, Serializable
```
A node of an AbstractSTRtree. A node is one of:
- empty
- an interior node containing child AbstractNodes
- a leaf node containing data items (ItemBoundables).
A node stores the bounds of its children, and its level within the index tree.
See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
`AbstractNode()` Default constructor required for serialization.
`AbstractNode(int level)` Constructs an AbstractNode at the given level in the tree

Method Summary

All Methods

Instance Methods

Abstract Methods

Concrete Methods
Modifier and Type	Method and Description
`void`	`addChildBoundable(Boundable childBoundable)` Adds either an AbstractNode, or if this is a leaf node, a data object (wrapped in an ItemBoundable)
`protected abstract Object`	`computeBounds()` Returns a representation of space that encloses this Boundable, preferably not much bigger than this Boundable's boundary yet fast to test for intersection with the bounds of other Boundables.
`Object`	`getBounds()` Gets the bounds of this node
`List`	`getChildBoundables()` Returns either child `AbstractNode`s, or if this is a leaf node, real data (wrapped in `ItemBoundable`s).
`int`	`getLevel()` Returns 0 if this node is a leaf, 1 if a parent of a leaf, and so on; the root node will have the highest level
`boolean`	`isEmpty()` Tests whether there are any `Boundable`s at this node.
`int`	`size()` Gets the count of the `Boundable`s at this node.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - AbstractNode
```
public AbstractNode()
```
    Default constructor required for serialization.
  - AbstractNode
```
public AbstractNode(int level)
```
    Constructs an AbstractNode at the given level in the tree
    
    Parameters:
    
    level - 0 if this node is a leaf, 1 if a parent of a leaf, and so on; the root node will have the highest level
- Method Detail
  - getChildBoundables
```
public List getChildBoundables()
```
    Returns either child AbstractNodes, or if this is a leaf node, real data (wrapped in ItemBoundables).
  - computeBounds
```
protected abstract Object computeBounds()
```
    Returns a representation of space that encloses this Boundable, preferably not much bigger than this Boundable's boundary yet fast to test for intersection with the bounds of other Boundables. The class of object returned depends on the subclass of AbstractSTRtree.
    
    Returns:
    
    an Envelope (for STRtrees), an Interval (for SIRtrees), or other object (for other subclasses of AbstractSTRtree)
    
    See Also:
    
    AbstractSTRtree.IntersectsOp
  - getBounds
```
public Object getBounds()
```
    Gets the bounds of this node
    
    Specified by:
    
    getBounds in interface Boundable
    
    Returns:
    
    the object representing bounds in this index
  - getLevel
```
public int getLevel()
```
    Returns 0 if this node is a leaf, 1 if a parent of a leaf, and so on; the root node will have the highest level
  - size
```
public int size()
```
    Gets the count of the Boundables at this node.
    
    Returns:
    
    the count of boundables at this node
  - isEmpty
```
public boolean isEmpty()
```
    Tests whether there are any Boundables at this node.
    
    Returns:
    
    true if there are boundables at this node
  - addChildBoundable
```
public void addChildBoundable(Boundable childBoundable)
```
    Adds either an AbstractNode, or if this is a leaf node, a data object (wrapped in an ItemBoundable)

Class AbstractNode

Constructor Summary

Constructors

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

AbstractNode

AbstractNode

Method Detail

getChildBoundables

computeBounds

getBounds

getLevel

size

isEmpty

addChildBoundable