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845 lines
36 KiB
845 lines
36 KiB
// kelondroRowCollection.java
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// (C) 2006 by Michael Peter Christen; mc@anomic.de, Frankfurt a. M., Germany
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// first published 12.01.2006 on http://www.anomic.de
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//
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// $LastChangedDate: 2006-04-02 22:40:07 +0200 (So, 02 Apr 2006) $
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// $LastChangedRevision: 1986 $
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// $LastChangedBy: orbiter $
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//
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// LICENSE
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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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package de.anomic.kelondro;
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import java.io.File;
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import java.io.IOException;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Random;
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import java.util.Set;
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import de.anomic.server.serverFileUtils;
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import de.anomic.server.serverMemory;
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import de.anomic.server.logging.serverLog;
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import de.anomic.yacy.yacySeedDB;
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public class kelondroRowCollection {
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public static final double growfactor = 1.4;
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private static final int isortlimit = 20;
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protected byte[] chunkcache;
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protected int chunkcount;
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protected long lastTimeRead, lastTimeWrote;
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protected kelondroRow rowdef;
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protected int sortBound;
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private static final int exp_chunkcount = 0;
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private static final int exp_last_read = 1;
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private static final int exp_last_wrote = 2;
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private static final int exp_order_type = 3;
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private static final int exp_order_col = 4;
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private static final int exp_order_bound = 5;
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private static final int exp_collection = 6;
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private static int processors = Runtime.getRuntime().availableProcessors();
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public kelondroRowCollection(kelondroRowCollection rc) {
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this.rowdef = rc.rowdef;
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this.chunkcache = rc.chunkcache;
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this.chunkcount = rc.chunkcount;
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this.sortBound = rc.sortBound;
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this.lastTimeRead = rc.lastTimeRead;
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this.lastTimeWrote = rc.lastTimeWrote;
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}
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public kelondroRowCollection(kelondroRow rowdef, int objectCount) {
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this.rowdef = rowdef;
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this.chunkcache = new byte[objectCount * rowdef.objectsize];
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this.chunkcount = 0;
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this.sortBound = 0;
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this.lastTimeRead = System.currentTimeMillis();
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this.lastTimeWrote = System.currentTimeMillis();
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}
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public kelondroRowCollection(kelondroRow rowdef, int objectCount, byte[] cache, int sortBound) {
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this.rowdef = rowdef;
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this.chunkcache = cache;
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this.chunkcount = objectCount;
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this.sortBound = sortBound;
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this.lastTimeRead = System.currentTimeMillis();
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this.lastTimeWrote = System.currentTimeMillis();
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}
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public kelondroRowCollection(kelondroRow rowdef, kelondroRow.Entry exportedCollectionRowEnvironment, int columnInEnvironment) {
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this.rowdef = rowdef;
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int chunkcachelength = exportedCollectionRowEnvironment.cellwidth(columnInEnvironment) - exportOverheadSize;
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kelondroRow.Entry exportedCollection = exportRow(chunkcachelength).newEntry(exportedCollectionRowEnvironment, columnInEnvironment);
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this.chunkcount = (int) exportedCollection.getColLong(exp_chunkcount);
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//assert (this.chunkcount <= chunkcachelength / rowdef.objectsize) : "chunkcount = " + this.chunkcount + ", chunkcachelength = " + chunkcachelength + ", rowdef.objectsize = " + rowdef.objectsize;
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if ((this.chunkcount > chunkcachelength / rowdef.objectsize)) {
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serverLog.logWarning("RowCollection", "corrected wrong chunkcount; chunkcount = " + this.chunkcount + ", chunkcachelength = " + chunkcachelength + ", rowdef.objectsize = " + rowdef.objectsize);
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this.chunkcount = chunkcachelength / rowdef.objectsize; // patch problem
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}
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this.lastTimeRead = (exportedCollection.getColLong(exp_last_read) + 10957) * day;
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this.lastTimeWrote = (exportedCollection.getColLong(exp_last_wrote) + 10957) * day;
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String sortOrderKey = exportedCollection.getColString(exp_order_type, null);
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kelondroOrder oldOrder = null;
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if ((sortOrderKey == null) || (sortOrderKey.equals("__"))) {
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oldOrder = null;
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} else {
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oldOrder = kelondroNaturalOrder.bySignature(sortOrderKey);
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if (oldOrder == null) oldOrder = kelondroBase64Order.bySignature(sortOrderKey);
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}
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if ((rowdef.objectOrder != null) && (oldOrder != null) && (!(rowdef.objectOrder.signature().equals(oldOrder.signature()))))
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throw new kelondroException("old collection order does not match with new order; objectOrder.signature = " + rowdef.objectOrder.signature() + ", oldOrder.signature = " + oldOrder.signature());
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if (rowdef.primaryKeyIndex != (int) exportedCollection.getColLong(exp_order_col))
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throw new kelondroException("old collection primary key does not match with new primary key");
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this.sortBound = (int) exportedCollection.getColLong(exp_order_bound);
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//assert (sortBound <= chunkcount) : "sortBound = " + sortBound + ", chunkcount = " + chunkcount;
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if (sortBound > chunkcount) {
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serverLog.logWarning("RowCollection", "corrected wrong sortBound; sortBound = " + sortBound + ", chunkcount = " + chunkcount);
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this.sortBound = chunkcount;
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}
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this.chunkcache = exportedCollection.getColBytes(exp_collection);
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}
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public void reset() {
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this.chunkcache = new byte[0];
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this.chunkcount = 0;
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this.sortBound = 0;
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}
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private static final kelondroRow exportMeasureRow = exportRow(0 /* no relevance */);
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protected static final int sizeOfExportedCollectionRows(kelondroRow.Entry exportedCollectionRowEnvironment, int columnInEnvironment) {
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kelondroRow.Entry exportedCollectionEntry = exportMeasureRow.newEntry(exportedCollectionRowEnvironment, columnInEnvironment);
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int chunkcount = (int) exportedCollectionEntry.getColLong(exp_chunkcount);
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return chunkcount;
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}
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private static final long day = 1000 * 60 * 60 * 24;
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public static int daysSince2000(long time) {
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return (int) (time / day) - 10957;
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}
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private static kelondroRow exportRow(int chunkcachelength) {
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// find out the size of this collection
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return new kelondroRow(
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"int size-4 {b256}," +
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"short lastread-2 {b256}," + // as daysSince2000
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"short lastwrote-2 {b256}," + // as daysSince2000
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"byte[] orderkey-2," +
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"short ordercol-2 {b256}," +
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"short orderbound-2 {b256}," +
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"byte[] collection-" + chunkcachelength,
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kelondroNaturalOrder.naturalOrder, 0
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);
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}
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public static final int exportOverheadSize = 14;
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public synchronized byte[] exportCollection() {
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// returns null if the collection is empty
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trim(false);
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kelondroRow row = exportRow(chunkcache.length);
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kelondroRow.Entry entry = row.newEntry();
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assert (sortBound <= chunkcount) : "sortBound = " + sortBound + ", chunkcount = " + chunkcount;
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assert (this.chunkcount <= chunkcache.length / rowdef.objectsize) : "chunkcount = " + this.chunkcount + ", chunkcache.length = " + chunkcache.length + ", rowdef.objectsize = " + rowdef.objectsize;
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entry.setCol(exp_chunkcount, this.chunkcount);
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entry.setCol(exp_last_read, daysSince2000(this.lastTimeRead));
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entry.setCol(exp_last_wrote, daysSince2000(this.lastTimeWrote));
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entry.setCol(exp_order_type, (this.rowdef.objectOrder == null) ? "__".getBytes() :this.rowdef.objectOrder.signature().getBytes());
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entry.setCol(exp_order_col, this.rowdef.primaryKeyIndex);
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entry.setCol(exp_order_bound, this.sortBound);
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entry.setCol(exp_collection, this.chunkcache);
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return entry.bytes();
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}
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public void saveCollection(File file) throws IOException {
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serverFileUtils.write(exportCollection(), file);
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}
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public kelondroRow row() {
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return this.rowdef;
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}
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private final void ensureSize(int elements) {
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int needed = elements * rowdef.objectsize;
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if (chunkcache.length >= needed) return;
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byte[] newChunkcache = new byte[(int) (needed * growfactor)]; // increase space
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System.arraycopy(chunkcache, 0, newChunkcache, 0, chunkcache.length);
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chunkcache = newChunkcache;
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newChunkcache = null;
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}
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public final long memoryNeededForGrow() {
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return (long) ((((long) (chunkcount + 1)) * ((long) rowdef.objectsize)) * growfactor);
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}
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public synchronized void trim(boolean plusGrowFactor) {
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if (chunkcache.length == 0) return;
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int needed = chunkcount * rowdef.objectsize;
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if (plusGrowFactor) needed = (int) (needed * growfactor);
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if (needed >= chunkcache.length)
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return; // in case that the growfactor causes that the cache would
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// grow instead of shrink, simply ignore the growfactor
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if (serverMemory.available() + 1000 < needed)
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return; // if the swap buffer is not available, we must give up.
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// This is not critical. Othervise we provoke a serious
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// problem with OOM
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byte[] newChunkcache = new byte[needed];
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System.arraycopy(chunkcache, 0, newChunkcache, 0, Math.min(
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chunkcache.length, newChunkcache.length));
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chunkcache = newChunkcache;
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newChunkcache = null;
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}
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public final long lastRead() {
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return lastTimeRead;
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}
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public final long lastWrote() {
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return lastTimeWrote;
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}
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public synchronized final byte[] getKey(int index) {
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assert (index >= 0) : "get: access with index " + index + " is below zero";
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assert (index < chunkcount) : "get: access with index " + index + " is above chunkcount " + chunkcount + "; sortBound = " + sortBound;
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assert (index * rowdef.objectsize < chunkcache.length);
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if ((chunkcache == null) || (rowdef == null)) return null; // case may appear during shutdown
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if (index >= chunkcount) return null;
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if (index * rowdef.objectsize >= chunkcache.length) return null;
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this.lastTimeRead = System.currentTimeMillis();
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byte[] b = new byte[this.rowdef.width(0)];
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System.arraycopy(chunkcache, index * rowdef.objectsize, b, 0, b.length);
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return b;
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}
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public synchronized final kelondroRow.Entry get(int index) {
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assert (index >= 0) : "get: access with index " + index + " is below zero";
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assert (index < chunkcount) : "get: access with index " + index + " is above chunkcount " + chunkcount + "; sortBound = " + sortBound;
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assert (index * rowdef.objectsize < chunkcache.length);
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if ((chunkcache == null) || (rowdef == null)) return null; // case may appear during shutdown
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if (index >= chunkcount) return null;
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if (index * rowdef.objectsize >= chunkcache.length) return null;
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this.lastTimeRead = System.currentTimeMillis();
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return rowdef.newEntry(chunkcache, index * rowdef.objectsize, true);
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}
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public synchronized final void set(int index, kelondroRow.Entry a) {
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assert (index >= 0) : "set: access with index " + index + " is below zero";
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ensureSize(index + 1);
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a.writeToArray(chunkcache, index * rowdef.objectsize);
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if (index >= chunkcount) chunkcount = index + 1;
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this.lastTimeWrote = System.currentTimeMillis();
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}
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public final void insertUnique(int index, kelondroRow.Entry a) {
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assert (a != null);
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if (index < chunkcount) {
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// make room
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ensureSize(chunkcount + 1);
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System.arraycopy(chunkcache, rowdef.objectsize * index, chunkcache, rowdef.objectsize * (index + 1), (chunkcount - index) * rowdef.objectsize);
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chunkcount++;
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}
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// insert entry into gap
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set(index, a);
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}
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public synchronized void addUnique(kelondroRow.Entry row) {
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byte[] r = row.bytes();
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addUnique(r, 0, r.length);
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}
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public synchronized void addUniqueMultiple(List<kelondroRow.Entry> rows) {
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assert this.sortBound == 0 : "sortBound = " + this.sortBound + ", chunkcount = " + this.chunkcount;
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Iterator<kelondroRow.Entry> i = rows.iterator();
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while (i.hasNext()) addUnique(i.next());
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}
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public synchronized void add(byte[] a) {
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addUnique(a, 0, a.length);
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}
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private final void addUnique(byte[] a, int astart, int alength) {
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assert (a != null);
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assert (astart >= 0) && (astart < a.length) : " astart = " + a;
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assert (!(serverLog.allZero(a, astart, alength))) : "a = " + serverLog.arrayList(a, astart, alength);
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assert (alength > 0);
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assert (astart + alength <= a.length);
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if (bugappearance(a, astart, alength)) {
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System.out.println("*** DEBUG: patched wrong a = " + serverLog.arrayList(a, astart, alength));
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return; // TODO: this is temporary; remote peers may still submit bad entries
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}
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assert (!(bugappearance(a, astart, alength))) : "a = " + serverLog.arrayList(a, astart, alength);
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int l = Math.min(rowdef.objectsize, Math.min(alength, a.length - astart));
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ensureSize(chunkcount + 1);
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System.arraycopy(a, astart, chunkcache, rowdef.objectsize * chunkcount, l);
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chunkcount++;
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this.lastTimeWrote = System.currentTimeMillis();
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}
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private static boolean bugappearance(byte[] a, int astart, int alength) {
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// check strange appearances of '@[B', which is not a b64-value or any other hash fragment
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if (astart + 3 > alength) return false;
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loop: for (int i = astart; i <= alength - 3; i++) {
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if (a[i ] != 64) continue loop;
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if (a[i + 1] != 91) continue loop;
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if (a[i + 2] != 66) continue loop;
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return true;
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}
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return false;
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}
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public synchronized final void addAllUnique(kelondroRowCollection c) {
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if (c == null) return;
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assert(rowdef.objectsize == c.rowdef.objectsize);
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ensureSize(chunkcount + c.size());
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System.arraycopy(c.chunkcache, 0, chunkcache, rowdef.objectsize * chunkcount, rowdef.objectsize * c.size());
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chunkcount += c.size();
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}
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/**
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* This method removes the entry at position p ensuring the order of the remaining
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* entries if specified by keepOrder.
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* Note: Keeping the order is expensive. If you want to remove more than one element in
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* a batch with this method, it'd be better to do the removes without order keeping and doing
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* the sort after all the removes are done.
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*
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* @param p element at this position will be removed
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* @param keepOrder keep the order of remaining entries
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*/
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protected synchronized final void removeRow(int p, boolean keepOrder) {
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assert p >= 0 : "p = " + p;
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assert p < chunkcount : "p = " + p + ", chunkcount = " + chunkcount;
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assert chunkcount > 0 : "chunkcount = " + chunkcount;
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assert sortBound <= chunkcount : "sortBound = " + sortBound + ", chunkcount = " + chunkcount;
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if (keepOrder && (p < sortBound)) {
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// remove by shift (quite expensive for big collections)
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System.arraycopy(
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chunkcache, (p + 1) * this.rowdef.objectsize,
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chunkcache, p * this.rowdef.objectsize,
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(chunkcount - p - 1) * this.rowdef.objectsize);
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sortBound--;
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} else {
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// remove by copying the top-element to the remove position
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if (p != chunkcount - 1) {
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System.arraycopy(
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chunkcache, (chunkcount - 1) * this.rowdef.objectsize,
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chunkcache, p * this.rowdef.objectsize,
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this.rowdef.objectsize);
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}
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// we moved the last element to the remove position: (p+1)st element
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// only the first p elements keep their order (element p is already outside the order)
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if (sortBound >= p) sortBound = p;
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}
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chunkcount--;
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this.lastTimeWrote = System.currentTimeMillis();
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}
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public synchronized kelondroRow.Entry removeOne() {
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if (chunkcount == 0) return null;
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kelondroRow.Entry r = get(chunkcount - 1);
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if (chunkcount == sortBound) sortBound--;
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chunkcount--;
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this.lastTimeWrote = System.currentTimeMillis();
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return r;
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}
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public synchronized void clear() {
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if (this.chunkcache.length == 0) return;
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this.chunkcache = new byte[0];
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this.chunkcount = 0;
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this.sortBound = 0;
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this.lastTimeWrote = System.currentTimeMillis();
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}
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public int size() {
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return chunkcount;
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}
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public synchronized Iterator<byte[]> keys() {
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// iterates byte[] - type entries
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return new keyIterator();
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}
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/**
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* Iterator for kelondroRowCollection.
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* It supports remove() though it doesn't contain the order of the underlying
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* collection during removes.
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*
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*/
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public class keyIterator implements Iterator<byte[]> {
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private int p;
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public keyIterator() {
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p = 0;
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}
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public boolean hasNext() {
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return p < chunkcount;
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}
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public byte[] next() {
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return getKey(p++);
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}
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public void remove() {
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p--;
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removeRow(p, false);
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}
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}
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public synchronized Iterator<kelondroRow.Entry> rows() {
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// iterates kelondroRow.Entry - type entries
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return new rowIterator();
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}
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/**
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* Iterator for kelondroRowCollection.
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* It supports remove() though it doesn't contain the order of the underlying
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* collection during removes.
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*
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*/
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public class rowIterator implements Iterator<kelondroRow.Entry> {
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private int p;
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public rowIterator() {
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p = 0;
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}
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public boolean hasNext() {
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return p < chunkcount;
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}
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public kelondroRow.Entry next() {
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return get(p++);
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}
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public void remove() {
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p--;
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removeRow(p, false);
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}
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}
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public synchronized void select(Set<String> keys) {
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// removes all entries but the ones given by urlselection
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if ((keys == null) || (keys.size() == 0)) return;
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Iterator<kelondroRow.Entry> i = rows();
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kelondroRow.Entry row;
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while (i.hasNext()) {
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row = (kelondroRow.Entry) i.next();
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if (!(keys.contains(row.getColString(0, null)))) i.remove();
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}
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}
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public synchronized final void sort() {
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assert (this.rowdef.objectOrder != null);
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if (this.sortBound == this.chunkcount) return; // this is already sorted
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if (this.chunkcount < isortlimit) {
|
|
isort(0, this.chunkcount, new byte[this.rowdef.objectsize]);
|
|
this.sortBound = this.chunkcount;
|
|
assert this.isSorted();
|
|
return;
|
|
}
|
|
byte[] swapspace = new byte[this.rowdef.objectsize];
|
|
int p = partition(0, this.chunkcount, this.sortBound, swapspace);
|
|
if ((processors > 1) && (this.chunkcount >= 10000)) {
|
|
// sort this using multi-threading; use one second thread
|
|
qsortthread qs = new qsortthread(0, p, 0);
|
|
qs.start();
|
|
qsort(p, this.chunkcount, 0, swapspace);
|
|
try {qs.join();} catch (InterruptedException e) {e.printStackTrace();}
|
|
} else {
|
|
qsort(0, p, 0, swapspace);
|
|
qsort(p, this.chunkcount, 0, swapspace);
|
|
}
|
|
this.sortBound = this.chunkcount;
|
|
//assert this.isSorted();
|
|
}
|
|
|
|
private class qsortthread extends Thread {
|
|
private int sl, sr, sb;
|
|
public qsortthread(int L, int R, int S) {
|
|
this.sl = L;
|
|
this.sr = R;
|
|
this.sb = S;
|
|
}
|
|
public void run() {
|
|
qsort(sl, sr, sb, new byte[rowdef.objectsize]);
|
|
}
|
|
}
|
|
|
|
private final void qsort(int L, int R, int S, byte[] swapspace) {
|
|
if (R - L < isortlimit) {
|
|
isort(L, R, swapspace);
|
|
return;
|
|
}
|
|
int p = partition(L, R, S, swapspace);
|
|
qsort(L, p, 0, swapspace);
|
|
qsort(p, R, 0, swapspace);
|
|
}
|
|
|
|
private final int partition(int L, int R, int S, byte[] swapspace) {
|
|
// returns {partition-point, new-S}
|
|
assert (L < R - 1);
|
|
assert (R - L >= isortlimit);
|
|
|
|
int p = L;
|
|
int q = R - 1;
|
|
int pivot = (L + R - 1) / 2;
|
|
int oldpivot = -1;
|
|
byte[] compiledPivot = null;
|
|
if (this.rowdef.objectOrder instanceof kelondroBase64Order) {
|
|
while (p <= q) {
|
|
// wenn pivot < S: pivot befindet sich in sortierter Sequenz von L bis S - 1
|
|
// d.h. alle Werte von L bis pivot sind kleiner als das pivot
|
|
// zu finden ist ein minimales p <= q so dass chunk[p] >= pivot
|
|
if (oldpivot != pivot) {
|
|
compiledPivot = compilePivot(pivot);
|
|
oldpivot = pivot;
|
|
}
|
|
if ((pivot < S) && (p < pivot)) {
|
|
//System.out.println("+++ saved " + (pivot - p) + " comparisments");
|
|
p = pivot;
|
|
S = 0;
|
|
} else {
|
|
while (comparePivot(compiledPivot, p) == 1) p++; // chunkAt[p] < pivot
|
|
}
|
|
// nun gilt chunkAt[p] >= pivot
|
|
while (comparePivot(compiledPivot, q) == -1) q--; // chunkAt[q] > pivot
|
|
if (p <= q) {
|
|
oldpivot = pivot;
|
|
pivot = swap(p, q, pivot, swapspace);
|
|
p++;
|
|
q--;
|
|
}
|
|
}
|
|
} else {
|
|
while (p <= q) {
|
|
if ((pivot < S) && (p < pivot)) {
|
|
p = pivot;
|
|
S = 0;
|
|
} else {
|
|
while (compare(pivot, p) == 1) p++; // chunkAt[p] < pivot
|
|
}
|
|
while (compare(pivot, q) == -1) q--; // chunkAt[q] > pivot
|
|
if (p <= q) {
|
|
pivot = swap(p, q, pivot, swapspace);
|
|
p++;
|
|
q--;
|
|
}
|
|
}
|
|
}
|
|
return p;
|
|
}
|
|
|
|
private final void isort(int L, int R, byte[] swapspace) {
|
|
for (int i = L + 1; i < R; i++)
|
|
for (int j = i; j > L && compare(j - 1, j) > 0; j--)
|
|
swap(j, j - 1, 0, swapspace);
|
|
}
|
|
|
|
private final int swap(int i, int j, int p, byte[] swapspace) {
|
|
if (i == j) return p;
|
|
System.arraycopy(chunkcache, this.rowdef.objectsize * i, swapspace, 0, this.rowdef.objectsize);
|
|
System.arraycopy(chunkcache, this.rowdef.objectsize * j, chunkcache, this.rowdef.objectsize * i, this.rowdef.objectsize);
|
|
System.arraycopy(swapspace, 0, chunkcache, this.rowdef.objectsize * j, this.rowdef.objectsize);
|
|
if (i == p) return j; else if (j == p) return i; else return p;
|
|
}
|
|
|
|
public synchronized void uniq() {
|
|
assert (this.rowdef.objectOrder != null);
|
|
// removes double-occurrences of chunks
|
|
// this works only if the collection was ordered with sort before
|
|
// if the collection is large and the number of deletions is also large,
|
|
// then this method may run a long time with 100% CPU load which is caused
|
|
// by the large number of memory movements.
|
|
if (chunkcount < 2) return;
|
|
int i = chunkcount - 2;
|
|
long t = System.currentTimeMillis(); // for time-out
|
|
int d = 0;
|
|
boolean u = true;
|
|
try {
|
|
while (i >= 0) {
|
|
if (compare(i, i + 1) == 0) {
|
|
removeRow(i, false);
|
|
d++;
|
|
if (i < chunkcount - 2) u = false;
|
|
}
|
|
i--;
|
|
if (System.currentTimeMillis() - t > 10000) {
|
|
throw new RuntimeException("uniq() time-out at " + i + " (backwards) from " + chunkcount + " elements after " + (System.currentTimeMillis() - t) + " milliseconds; " + d + " deletions so far");
|
|
}
|
|
}
|
|
} catch (RuntimeException e) {
|
|
serverLog.logWarning("kelondroRowCollection", e.getMessage(), e);
|
|
} finally {
|
|
if (!u) this.sort();
|
|
}
|
|
}
|
|
|
|
public synchronized boolean isSorted() {
|
|
assert (this.rowdef.objectOrder != null);
|
|
if (chunkcount <= 1) return true;
|
|
if (chunkcount != this.sortBound) return false;
|
|
for (int i = 0; i < chunkcount - 1; i++) {
|
|
//System.out.println("*" + new String(get(i).getColBytes(0)));
|
|
if (compare(i, i + 1) > 0) {
|
|
System.out.println("?" + new String(get(i+1).getColBytes(0)));
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
public synchronized String toString() {
|
|
StringBuffer s = new StringBuffer();
|
|
Iterator<kelondroRow.Entry> i = rows();
|
|
if (i.hasNext()) s.append(i.next().toString());
|
|
while (i.hasNext()) s.append(", " + ((kelondroRow.Entry) i.next()).toString());
|
|
return new String(s);
|
|
}
|
|
|
|
private final int compare(int i, int j) {
|
|
assert (chunkcount * this.rowdef.objectsize <= chunkcache.length) : "chunkcount = " + chunkcount + ", objsize = " + this.rowdef.objectsize + ", chunkcache.length = " + chunkcache.length;
|
|
assert (i >= 0) && (i < chunkcount) : "i = " + i + ", chunkcount = " + chunkcount;
|
|
assert (j >= 0) && (j < chunkcount) : "j = " + j + ", chunkcount = " + chunkcount;
|
|
assert (this.rowdef.objectOrder != null);
|
|
if (i == j) return 0;
|
|
assert (this.rowdef.primaryKeyIndex == 0) : "this.sortColumn = " + this.rowdef.primaryKeyIndex;
|
|
int colstart = (this.rowdef.primaryKeyIndex < 0) ? 0 : this.rowdef.colstart[this.rowdef.primaryKeyIndex];
|
|
assert (!bugappearance(chunkcache, i * this.rowdef.objectsize + colstart, this.rowdef.primaryKeyLength));
|
|
assert (!bugappearance(chunkcache, j * this.rowdef.objectsize + colstart, this.rowdef.primaryKeyLength));
|
|
int c = this.rowdef.objectOrder.compare(
|
|
chunkcache,
|
|
i * this.rowdef.objectsize + colstart,
|
|
this.rowdef.primaryKeyLength,
|
|
chunkcache,
|
|
j * this.rowdef.objectsize + colstart,
|
|
this.rowdef.primaryKeyLength);
|
|
return c;
|
|
}
|
|
|
|
protected final byte[] compilePivot(int i) {
|
|
assert (i >= 0) && (i < chunkcount) : "i = " + i + ", chunkcount = " + chunkcount;
|
|
assert (this.rowdef.objectOrder != null);
|
|
assert (this.rowdef.objectOrder instanceof kelondroBase64Order);
|
|
assert (this.rowdef.primaryKeyIndex == 0) : "this.sortColumn = " + this.rowdef.primaryKeyIndex;
|
|
int colstart = (this.rowdef.primaryKeyIndex < 0) ? 0 : this.rowdef.colstart[this.rowdef.primaryKeyIndex];
|
|
assert (!bugappearance(chunkcache, i * this.rowdef.objectsize + colstart, this.rowdef.primaryKeyLength));
|
|
return ((kelondroBase64Order) this.rowdef.objectOrder).compilePivot(chunkcache, i * this.rowdef.objectsize + colstart, this.rowdef.primaryKeyLength);
|
|
}
|
|
|
|
protected final byte[] compilePivot(byte[] a, int astart, int alength) {
|
|
assert (this.rowdef.objectOrder != null);
|
|
assert (this.rowdef.objectOrder instanceof kelondroBase64Order);
|
|
assert (this.rowdef.primaryKeyIndex == 0) : "this.sortColumn = " + this.rowdef.primaryKeyIndex;
|
|
return ((kelondroBase64Order) this.rowdef.objectOrder).compilePivot(a, astart, alength);
|
|
}
|
|
|
|
protected final int comparePivot(byte[] compiledPivot, int j) {
|
|
assert (chunkcount * this.rowdef.objectsize <= chunkcache.length) : "chunkcount = " + chunkcount + ", objsize = " + this.rowdef.objectsize + ", chunkcache.length = " + chunkcache.length;
|
|
assert (j >= 0) && (j < chunkcount) : "j = " + j + ", chunkcount = " + chunkcount;
|
|
assert (this.rowdef.objectOrder != null);
|
|
assert (this.rowdef.objectOrder instanceof kelondroBase64Order);
|
|
assert (this.rowdef.primaryKeyIndex == 0) : "this.sortColumn = " + this.rowdef.primaryKeyIndex;
|
|
int colstart = (this.rowdef.primaryKeyIndex < 0) ? 0 : this.rowdef.colstart[this.rowdef.primaryKeyIndex];
|
|
assert (!bugappearance(chunkcache, j * this.rowdef.objectsize + colstart, this.rowdef.primaryKeyLength));
|
|
int c = ((kelondroBase64Order) this.rowdef.objectOrder).comparePivot(
|
|
compiledPivot,
|
|
chunkcache,
|
|
j * this.rowdef.objectsize + colstart,
|
|
this.rowdef.primaryKeyLength);
|
|
return c;
|
|
}
|
|
|
|
protected synchronized int compare(byte[] a, int astart, int alength, int chunknumber) {
|
|
assert (chunknumber < chunkcount);
|
|
int l = Math.min(this.rowdef.primaryKeyLength, Math.min(a.length - astart, alength));
|
|
return rowdef.objectOrder.compare(a, astart, l, chunkcache, chunknumber * this.rowdef.objectsize + ((rowdef.primaryKeyIndex < 0) ? 0 : this.rowdef.colstart[rowdef.primaryKeyIndex]), this.rowdef.primaryKeyLength);
|
|
}
|
|
|
|
protected synchronized boolean match(byte[] a, int astart, int alength, int chunknumber) {
|
|
if (chunknumber >= chunkcount) return false;
|
|
int i = 0;
|
|
int p = chunknumber * this.rowdef.objectsize + ((rowdef.primaryKeyIndex < 0) ? 0 : this.rowdef.colstart[rowdef.primaryKeyIndex]);
|
|
final int len = Math.min(this.rowdef.primaryKeyLength, Math.min(alength, a.length - astart));
|
|
while (i < len) if (a[astart + i++] != chunkcache[p++]) return false;
|
|
return ((len == this.rowdef.primaryKeyLength) || (chunkcache[len] == 0)) ;
|
|
}
|
|
|
|
public synchronized void close() {
|
|
chunkcache = null;
|
|
}
|
|
|
|
private static long d(long a, long b) {
|
|
if (b == 0) return a; else return a / b;
|
|
}
|
|
|
|
private static Random random;
|
|
private static String randomHash() {
|
|
return
|
|
kelondroBase64Order.enhancedCoder.encodeLong(random.nextLong(), 4) +
|
|
kelondroBase64Order.enhancedCoder.encodeLong(random.nextLong(), 4) +
|
|
kelondroBase64Order.enhancedCoder.encodeLong(random.nextLong(), 4);
|
|
}
|
|
|
|
public static void test(int testsize) {
|
|
kelondroRow r = new kelondroRow(new kelondroColumn[]{
|
|
new kelondroColumn("hash", kelondroColumn.celltype_string, kelondroColumn.encoder_bytes, yacySeedDB.commonHashLength, "hash")},
|
|
kelondroBase64Order.enhancedCoder, 0);
|
|
|
|
kelondroRowCollection a = new kelondroRowCollection(r, testsize);
|
|
System.out.println("kelondroRowCollection test with size = " + testsize);
|
|
long t0 = System.currentTimeMillis();
|
|
random = new Random(0);
|
|
for (int i = 0; i < testsize; i++) a.add(randomHash().getBytes());
|
|
random = new Random(0);
|
|
for (int i = 0; i < testsize; i++) a.add(randomHash().getBytes());
|
|
a.sort();
|
|
a.uniq();
|
|
long t1 = System.currentTimeMillis();
|
|
System.out.println("create a : " + (t1 - t0) + " milliseconds, " + d(testsize, (t1 - t0)) + " entries/millisecond; a.size() = " + a.size());
|
|
|
|
kelondroRowCollection c = new kelondroRowCollection(r, testsize);
|
|
random = new Random(0);
|
|
t0 = System.currentTimeMillis();
|
|
for (int i = 0; i < testsize; i++) {
|
|
c.add(randomHash().getBytes());
|
|
}
|
|
t1 = System.currentTimeMillis();
|
|
System.out.println("create c : " + (t1 - t0) + " milliseconds, " + d(testsize, (t1 - t0)) + " entries/millisecond");
|
|
kelondroRowCollection d = new kelondroRowCollection(r, testsize);
|
|
for (int i = 0; i < testsize; i++) {
|
|
d.add(c.get(i).getColBytes(0));
|
|
}
|
|
long t2 = System.currentTimeMillis();
|
|
System.out.println("copy c -> d: " + (t2 - t1) + " milliseconds, " + d(testsize, (t2 - t1)) + " entries/millisecond");
|
|
processors = 1;
|
|
c.sort();
|
|
long t3 = System.currentTimeMillis();
|
|
System.out.println("sort c (1) : " + (t3 - t2) + " milliseconds, " + d(testsize, (t3 - t2)) + " entries/millisecond");
|
|
processors = 2;
|
|
d.sort();
|
|
long t4 = System.currentTimeMillis();
|
|
System.out.println("sort d (2) : " + (t4 - t3) + " milliseconds, " + d(testsize, (t4 - t3)) + " entries/millisecond");
|
|
c.uniq();
|
|
long t5 = System.currentTimeMillis();
|
|
System.out.println("uniq c : " + (t5 - t4) + " milliseconds, " + d(testsize, (t5 - t4)) + " entries/millisecond");
|
|
d.uniq();
|
|
long t6 = System.currentTimeMillis();
|
|
System.out.println("uniq d : " + (t6 - t5) + " milliseconds, " + d(testsize, (t6 - t5)) + " entries/millisecond");
|
|
random = new Random(0);
|
|
kelondroRowSet e = new kelondroRowSet(r, testsize);
|
|
for (int i = 0; i < testsize; i++) {
|
|
e.put(r.newEntry(randomHash().getBytes()));
|
|
}
|
|
long t7 = System.currentTimeMillis();
|
|
System.out.println("create e : " + (t7 - t6) + " milliseconds, " + d(testsize, (t7 - t6)) + " entries/millisecond");
|
|
e.sort();
|
|
long t8 = System.currentTimeMillis();
|
|
System.out.println("sort e (2) : " + (t8 - t7) + " milliseconds, " + d(testsize, (t8 - t7)) + " entries/millisecond");
|
|
e.uniq();
|
|
long t9 = System.currentTimeMillis();
|
|
System.out.println("uniq e : " + (t9 - t8) + " milliseconds, " + d(testsize, (t9 - t8)) + " entries/millisecond");
|
|
boolean cis = c.isSorted();
|
|
long t10 = System.currentTimeMillis();
|
|
System.out.println("c isSorted = " + ((cis) ? "true" : "false") + ": " + (t10 - t9) + " milliseconds");
|
|
boolean dis = d.isSorted();
|
|
long t11 = System.currentTimeMillis();
|
|
System.out.println("d isSorted = " + ((dis) ? "true" : "false") + ": " + (t11 - t10) + " milliseconds");
|
|
boolean eis = e.isSorted();
|
|
long t12 = System.currentTimeMillis();
|
|
System.out.println("e isSorted = " + ((eis) ? "true" : "false") + ": " + (t12 - t11) + " milliseconds");
|
|
random = new Random(0);
|
|
boolean allfound = true;
|
|
for (int i = 0; i < testsize; i++) {
|
|
if (e.get(randomHash().getBytes()) == null) {
|
|
allfound = false;
|
|
break;
|
|
}
|
|
}
|
|
long t13 = System.currentTimeMillis();
|
|
System.out.println("e allfound = " + ((allfound) ? "true" : "false") + ": " + (t13 - t12) + " milliseconds");
|
|
boolean noghosts = true;
|
|
for (int i = 0; i < testsize; i++) {
|
|
if (e.get(randomHash().getBytes()) != null) {
|
|
noghosts = false;
|
|
break;
|
|
}
|
|
}
|
|
long t14 = System.currentTimeMillis();
|
|
System.out.println("e noghosts = " + ((noghosts) ? "true" : "false") + ": " + (t14 - t13) + " milliseconds");
|
|
System.out.println("Result size: c = " + c.size() + ", d = " + d.size() + ", e = " + e.size());
|
|
System.out.println();
|
|
}
|
|
|
|
public static void main(String[] args) {
|
|
//test(1000);
|
|
test(10000);
|
|
test(100000);
|
|
//test(1000000);
|
|
|
|
/*
|
|
System.out.println(new java.util.Date(10957 * day));
|
|
System.out.println(new java.util.Date(0));
|
|
System.out.println(daysSince2000(System.currentTimeMillis()));
|
|
*/
|
|
}
|
|
|
|
/*
|
|
kelondroRowCollection test with size = 10000
|
|
create c : 134 milliseconds, 74 entries/millisecond
|
|
copy c -> d: 47 milliseconds, 212 entries/millisecond
|
|
sort c (1) : 66 milliseconds, 151 entries/millisecond
|
|
sort d (2) : 23 milliseconds, 434 entries/millisecond
|
|
uniq c : 3 milliseconds, 3333 entries/millisecond
|
|
uniq d : 2 milliseconds, 5000 entries/millisecond
|
|
create e : 528 milliseconds, 18 entries/millisecond
|
|
sort e (2) : 13 milliseconds, 769 entries/millisecond
|
|
uniq e : 2 milliseconds, 5000 entries/millisecond
|
|
c isSorted = true: 2 milliseconds
|
|
d isSorted = true: 3 milliseconds
|
|
e isSorted = true: 2 milliseconds
|
|
e allfound = true: 85 milliseconds
|
|
e noghosts = true: 75 milliseconds
|
|
Result size: c = 10000, d = 10000, e = 10000
|
|
|
|
kelondroRowCollection test with size = 100000
|
|
create c : 589 milliseconds, 169 entries/millisecond
|
|
copy c -> d: 141 milliseconds, 709 entries/millisecond
|
|
sort c (1) : 268 milliseconds, 373 entries/millisecond
|
|
sort d (2) : 187 milliseconds, 534 entries/millisecond
|
|
uniq c : 13 milliseconds, 7692 entries/millisecond
|
|
uniq d : 14 milliseconds, 7142 entries/millisecond
|
|
create e : 22068 milliseconds, 4 entries/millisecond
|
|
sort e (2) : 167 milliseconds, 598 entries/millisecond
|
|
uniq e : 14 milliseconds, 7142 entries/millisecond
|
|
c isSorted = true: 13 milliseconds
|
|
d isSorted = true: 14 milliseconds
|
|
e isSorted = true: 13 milliseconds
|
|
e allfound = true: 815 milliseconds
|
|
e noghosts = true: 787 milliseconds
|
|
Result size: c = 100000, d = 100000, e = 100000
|
|
*/
|
|
} |