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@ -24,29 +24,28 @@
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package de.anomic.kelondro;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Iterator;
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import java.util.Random;
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import java.util.TreeMap;
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public class kelondroRowBufferedSet extends kelondroRowSet {
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private static final long memBlockLimit = 2000000; // do not fill cache further if the amount of available memory is less that this
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private static final int bufferFlushLimit = 10000;
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private static final int bufferFlushMinimum = 1000;
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private final boolean useRowCollection = true;
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private final boolean useRowCollection = false;
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private kelondroProfile profile;
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private HashMap buffer;
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private TreeMap buffer;
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public kelondroRowBufferedSet(kelondroRow rowdef) {
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super(rowdef);
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buffer = new HashMap();
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buffer = new TreeMap();
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profile = new kelondroProfile();
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}
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public kelondroRowBufferedSet(kelondroRow rowdef, int objectCount) {
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super(rowdef, objectCount);
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buffer = new HashMap();
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buffer = new TreeMap();
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profile = new kelondroProfile();
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}
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@ -142,15 +141,16 @@ public class kelondroRowBufferedSet extends kelondroRowSet {
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long handle = profile.startWrite();
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byte[] key = newentry.getColBytes(super.sortColumn);
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kelondroRow.Entry oldentry = null;
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Integer intk = new Integer((int) kelondroNaturalOrder.decodeLong(key));
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synchronized (buffer) {
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if (useRowCollection) {
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oldentry = (kelondroRow.Entry) buffer.get(new Integer((int) kelondroNaturalOrder.decodeLong(key)));
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oldentry = (kelondroRow.Entry) buffer.get(intk);
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if (oldentry == null) {
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// try the collection
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oldentry = super.get(key);
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if (oldentry == null) {
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// this was not anywhere
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buffer.put(new Integer((int) kelondroNaturalOrder.decodeLong(key)), newentry);
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buffer.put(intk, newentry);
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if (((buffer.size() > bufferFlushMinimum) && (kelondroRecords.availableMemory() > memBlockLimit)) ||
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(buffer.size() > bufferFlushLimit)) flush();
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} else {
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@ -160,10 +160,10 @@ public class kelondroRowBufferedSet extends kelondroRowSet {
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} else {
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// the entry is already in buffer
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// simply replace old entry
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buffer.put(new Integer((int) kelondroNaturalOrder.decodeLong(key)), newentry);
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buffer.put(intk, newentry);
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}
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} else {
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oldentry = (kelondroRow.Entry) buffer.put(new Integer((int) kelondroNaturalOrder.decodeLong(key)), newentry);
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oldentry = (kelondroRow.Entry) buffer.put(intk, newentry);
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}
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}
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profile.stopWrite(handle);
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@ -174,15 +174,11 @@ public class kelondroRowBufferedSet extends kelondroRowSet {
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long handle = profile.startDelete();
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kelondroRow.Entry oldentry = null;
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synchronized (buffer) {
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if (useRowCollection) {
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oldentry = (kelondroRow.Entry) buffer.remove(new Integer((int) kelondroNaturalOrder.decodeLong(key)));
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if (oldentry == null) {
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if ((oldentry == null) && (useRowCollection)) {
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// try the collection
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oldentry = super.removeShift(key);
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}
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} else {
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oldentry = (kelondroRow.Entry) buffer.remove(new Integer((int) kelondroNaturalOrder.decodeLong(key)));
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}
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}
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profile.stopDelete(handle);
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return oldentry;
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@ -192,15 +188,11 @@ public class kelondroRowBufferedSet extends kelondroRowSet {
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long handle = profile.startDelete();
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kelondroRow.Entry oldentry = null;
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synchronized (buffer) {
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if (useRowCollection) {
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oldentry = (kelondroRow.Entry) buffer.remove(new Integer((int) kelondroNaturalOrder.decodeLong(key)));
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if (oldentry == null) {
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if ((oldentry == null) && (useRowCollection)) {
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// try the collection
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return super.removeMarked(key);
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}
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} else {
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oldentry = (kelondroRow.Entry) buffer.remove(new Integer((int) kelondroNaturalOrder.decodeLong(key)));
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}
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}
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profile.stopDelete(handle);
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return oldentry;
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@ -219,73 +211,4 @@ public class kelondroRowBufferedSet extends kelondroRowSet {
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return profile;
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}
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public static void main(String[] args) {
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String[] test = { "eins", "zwei", "drei", "vier", "fuenf", "sechs", "sieben", "acht", "neun", "zehn" };
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kelondroRowBufferedSet c = new kelondroRowBufferedSet(new kelondroRow(new int[]{10, 3}));
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c.setOrdering(kelondroNaturalOrder.naturalOrder, 0);
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for (int i = 0; i < test.length; i++) c.add(test[i].getBytes());
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for (int i = 0; i < test.length; i++) c.add(test[i].getBytes());
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c.removeMarked("fuenf".getBytes());
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c.shape();
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Iterator i = c.elements();
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String s;
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System.out.print("INPUT-ITERATOR: ");
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while (i.hasNext()) {
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s = new String((byte[]) i.next()).trim();
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System.out.print(s + ", ");
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if (s.equals("drei")) i.remove();
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}
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System.out.println("");
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System.out.println("INPUT-TOSTRING: " + c.toString());
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c.shape();
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System.out.println("SORTED : " + c.toString());
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c.uniq();
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System.out.println("UNIQ : " + c.toString());
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c.trim();
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System.out.println("TRIM : " + c.toString());
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// second test
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c = new kelondroRowBufferedSet(new kelondroRow(new int[]{10, 3}));
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c.setOrdering(kelondroNaturalOrder.naturalOrder, 0);
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Random rand = new Random(0);
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long start = System.currentTimeMillis();
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long t, d = 0;
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String w;
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for (long k = 0; k < 60000; k++) {
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t = System.currentTimeMillis();
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w = "a" + Long.toString(rand.nextLong());
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c.add(w.getBytes());
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if (k % 10000 == 0)
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System.out.println("added " + k + " entries in " +
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((t - start) / 1000) + " seconds, " +
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(((t - start) > 1000) ? (k / ((t - start) / 1000)) : k) +
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" entries/second, size = " + c.size());
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}
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System.out.println("bevore sort: " + ((System.currentTimeMillis() - start) / 1000) + " seconds");
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c.shape();
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System.out.println("after sort: " + ((System.currentTimeMillis() - start) / 1000) + " seconds");
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c.uniq();
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System.out.println("after uniq: " + ((System.currentTimeMillis() - start) / 1000) + " seconds");
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System.out.println("RESULT SIZE: " + c.size());
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System.out.println();
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// third test
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c = new kelondroRowBufferedSet(new kelondroRow(new int[]{10, 3}), 60000);
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c.setOrdering(kelondroNaturalOrder.naturalOrder, 0);
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rand = new Random(0);
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start = System.currentTimeMillis();
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d = 0;
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for (long k = 0; k < 60000; k++) {
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t = System.currentTimeMillis();
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w = "a" + Long.toString(rand.nextLong());
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if (c.get(w.getBytes()) == null) c.add(w.getBytes()); else d++;
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if (k % 10000 == 0)
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System.out.println("added " + k + " entries in " +
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((t - start) / 1000) + " seconds, " +
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(((t - start) > 1000) ? (k / ((t - start) / 1000)) : k) +
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" entries/second, " + d + " double, size = " + c.size() +
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", sum = " + (c.size() + d));
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}
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System.out.println("RESULT SIZE: " + c.size());
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}
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}
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