edu.ucla.sspace.vector

Class AbstractVector<T extends Number>

java.lang.Object

edu.ucla.sspace.vector.AbstractVector<T>

All Implemented Interfaces:

Vector<T>

Direct Known Subclasses:

AbstractDoubleVector, AbstractIntegerVector, SparseHashVector

public abstract class AbstractVector<T extends Number>
extends Object
implements Vector<T>

An abstract base class that provides default implementations of common methods in Vector. Vector implementations need only implement Vector.length() and Vector.getValue(int) functionality to be read-only vectors.

Constructor Summary

Constructors

Constructor and Description
AbstractVector()

Method Summary

Methods

Modifier and Type	Method and Description
double	add(int index, double delta) Throws an UnsupportedOperationException if called (vector is unmodifiable).
boolean	equals(Object o) Returns true if the object is a Vector of the same length and whose corresponding indices have equivalent values.
int	hashCode() Returns the hash code as the sum of the vectors elements, normalized to an int.
double	magnitude() Returns the magnitude of this vector
void	set(int index, Number value) Set the value in the vector (optional operation).
String	toString() Returns a string description of the full contents of this vector

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface edu.ucla.sspace.vector.Vector

getValue, length

Constructor Detail

AbstractVector

public AbstractVector()

Method Detail

add

public double add(int index,
         double delta)

Throws an UnsupportedOperationException if called (vector is unmodifiable).

equals

public boolean equals(Object o)

Returns true if the object is a Vector of the same length and whose corresponding indices have equivalent values.

Specified by:

equals in interface Vector<T extends Number>

Overrides:

equals in class Object

hashCode

public int hashCode()

Returns the hash code as the sum of the vectors elements, normalized to an int.

Specified by:

hashCode in interface Vector<T extends Number>

Overrides:

hashCode in class Object

magnitude

public double magnitude()

Returns the magnitude of this vector

Specified by:

magnitude in interface Vector<T extends Number>

set

public void set(int index,
       Number value)

Set the value in the vector (optional operation).

Specified by:

set in interface Vector<T extends Number>

Parameters:

index - index to set.

value - value to set in the vector.

toString

public String toString()

Returns a string description of the full contents of this vector

Overrides:

toString in class Object