Package org.meteoinfo.jts.index.strtree

Class AbstractNode

  • All Implemented Interfaces:
    java.io.Serializable, Boundable

    public abstract class AbstractNode
extends java.lang.Object
implements Boundable, java.io.Serializable
    A node of an AbstractSTRtree. A node is one of: A node stores the bounds of its children, and its level within the index tree.
    See Also:
    Serialized Form

    • Constructor Summary

      Constructors 
      Constructor 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 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 java.lang.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.
      java.lang.Object getBounds​()
      Gets the bounds of this node
      java.util.List getChildBoundables​()
      Returns either child AbstractNodes, or if this is a leaf node, real data (wrapped in ItemBoundables).
      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 Boundables at this node.
      int size​()
      Gets the count of the Boundables 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 java.util.List getChildBoundables​()
        Returns either child AbstractNodes, or if this is a leaf node, real data (wrapped in ItemBoundables).

      • computeBounds

        protected abstract java.lang.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 java.lang.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)