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storage and loading is 30 times faster! a cache of 100000 RWIs needed 180 seconds to store and 100 seconds to restore; now the same cache needs only 6 seconds to store and 3 seconds to restore. The cache size has decreased now by 30% (95 MB instead of 150 MB). git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4634 6c8d7289-2bf4-0310-a012-ef5d649a1542
73 lines
3.2 KiB
Java
73 lines
3.2 KiB
Java
// kelondroOrder.java
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// -----------------------
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// part of The Kelondro Database
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// (C) by Michael Peter Christen; mc@anomic.de
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2005
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// created 29.12.2005
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//
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// $LastChangedDate: 2005-09-22 22:01:26 +0200 (Thu, 22 Sep 2005) $
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// $LastChangedRevision: 774 $
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// $LastChangedBy: orbiter $
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// Using this software in any meaning (reading, learning, copying, compiling,
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// running) means that you agree that the Author(s) is (are) not responsible
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// for cost, loss of data or any harm that may be caused directly or indirectly
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// by usage of this softare or this documentation. The usage of this software
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// is on your own risk. The installation and usage (starting/running) of this
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// software may allow other people or application to access your computer and
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// any attached devices and is highly dependent on the configuration of the
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// software which must be done by the user of the software; the author(s) is
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// (are) also not responsible for proper configuration and usage of the
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// software, even if provoked by documentation provided together with
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// the software.
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//
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// Any changes to this file according to the GPL as documented in the file
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// gpl.txt aside this file in the shipment you received can be done to the
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// lines that follows this copyright notice here, but changes must not be
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// done inside the copyright notive above. A re-distribution must contain
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// the intact and unchanged copyright notice.
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// Contributions and changes to the program code must be marked as such.
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package de.anomic.kelondro;
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import java.util.Comparator;
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public interface kelondroOrder<A> extends Comparator<A> {
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public boolean wellformed(A a); // returns true if and only if a has only characters that belong to the implemented order
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public kelondroOrder<A> clone();
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public void direction(boolean ascending); // the ordering direction can be changed at any time
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public String signature(); // returns a signature String so that different orderings have different signatures
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public long partition(A key, int forkes);
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public long cardinal(A key); // returns a cardinal number in the range of 0 .. Long.MAX_VALUE
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public int compare(A a, A b);
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public A zero(); // returns the zero point of the Ordering; null if not defined
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public void rotate(A zero); // defines that the ordering rotates, and sets the zero point for the rotation
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public boolean equals(kelondroOrder<A> o); // used to compare different order objects; they may define the same ordering
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}
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