/*
 * Copyright 1998-2014 University Corporation for Atmospheric Research/Unidata
 *
 *   Portions of this software were developed by the Unidata Program at the
 *   University Corporation for Atmospheric Research.
 *
 *   Access and use of this software shall impose the following obligations
 *   and understandings on the user. The user is granted the right, without
 *   any fee or cost, to use, copy, modify, alter, enhance and distribute
 *   this software, and any derivative works thereof, and its supporting
 *   documentation for any purpose whatsoever, provided that this entire
 *   notice appears in all copies of the software, derivative works and
 *   supporting documentation.  Further, UCAR requests that the user credit
 *   UCAR/Unidata in any publications that result from the use of this
 *   software or in any product that includes this software. The names UCAR
 *   and/or Unidata, however, may not be used in any advertising or publicity
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 *
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 *   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 *   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 *   INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
 *   FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
 *   NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 *   WITH THE ACCESS, USE OR PERFORMANCE OF THIS SOFTWARE.
 */
package ucar.units;

/**
 * Provides support for an unknown base quantity.
 * 
 * @author Steven R. Emmerson
 */
public final class UnknownBaseQuantity extends BaseQuantity {
	private static final long	serialVersionUID	= 1L;

	/**
	 * Constructs from nothing.
	 */
	protected UnknownBaseQuantity() {
		super("Unknown", "x", true);
	}

	/**
	 * Indicates if this quantity is semantically the same as an object. Unknown
	 * quantities are never equal by definition -- not even to itself.
	 * 
	 * @param object
	 *            The object.
	 * @return <code>false</code> always.
	 */
	@Override
	public boolean equals(final Object object) {
		return false;
	}

	/**
	 * Returns the hash code of this instance.
	 * 
	 * @return The hash code of this instance.
	 */
	@Override
	public int hashCode() {
		return System.identityHashCode(this);
	}

	/**
	 * Indicates if this quantity is dimensionless. Unknown quantities are never
	 * dimensionless by definition.
	 * 
	 * @return <code>false</code> always.
	 */
	@Override
	public boolean isDimensionless() {
		return false;
	}
}