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The NetCDF-Java Library is a Java interface to NetCDF files, as well as to many other types of scientific data formats.

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// $Id: UnknownBaseQuantity.java 64 2006-07-12 22:30:50Z edavis $
/*
 * Copyright 1998-2009 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
 * to endorse or promote any products or commercial entity unless specific
 * written permission is obtained from UCAR/Unidata. The user also
 * understands that UCAR/Unidata is not obligated to provide the user with
 * any support, consulting, training or assistance of any kind with regard
 * to the use, operation and performance of this software nor to provide
 * the user with any updates, revisions, new versions or "bug fixes."
 *
 * THIS SOFTWARE IS PROVIDED BY UCAR/UNIDATA "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL UCAR/UNIDATA BE LIABLE FOR ANY SPECIAL,
 * 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
 * @version $Id: UnknownBaseQuantity.java 64 2006-07-12 22:30:50Z edavis $
 */
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 false 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 false always.
	 */
	@Override
	public boolean isDimensionless() {
		return false;
	}
}