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yacy_search_server
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strong speed enhancements for the index cache dump and restore:

Browse Source 
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
pull/1/head
orbiter 17 years ago
parent 442204a1c8
commit 783a4c9edb
8 changed files with 173 additions and 394 deletions
Show Stats Download Patch File Download Diff File

327
source/de/anomic/index/indexContainerHeap.java
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@ -28,320 +28,117 @@ package de.anomic.index;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Collections;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.SortedMap;
import java.util.TreeMap;
import de.anomic.kelondro.kelondroByteOrder;
import de.anomic.kelondro.kelondroCloneableIterator;
import de.anomic.kelondro.kelondroBytesIntMap;
import de.anomic.kelondro.kelondroRow;
import de.anomic.kelondro.kelondroRowSet;
import de.anomic.server.serverMemory;
import de.anomic.server.logging.serverLog;
public final class indexContainerHeap {
// class variables
private final File databaseRoot;
protected final SortedMap<String, indexContainer> cache; // wordhash-container
private final serverLog log;
private String indexArrayFileName;
private kelondroRow payloadrow;
public indexContainerHeap(File databaseRoot, kelondroRow payloadrow, String dumpname, serverLog log) {
// creates a new index cache
// the cache has a back-end where indexes that do not fit in the cache are flushed
this.databaseRoot = databaseRoot;
this.cache = Collections.synchronizedSortedMap(new TreeMap<String, indexContainer>(new kelondroByteOrder.StringOrder(payloadrow.getOrdering())));
this.log = log;
this.indexArrayFileName = dumpname;
this.payloadrow = payloadrow;
// read in dump of last session
try {
restore();
} catch (IOException e){
log.logSevere("unable to restore cache dump: " + e.getMessage(), e);
}
}
private void dump() throws IOException {
log.logConfig("creating dump for index cache '" + indexArrayFileName + "', " + cache.size() + " words (and much more urls)");
File indexDumpFile = new File(databaseRoot, indexArrayFileName);
if (indexDumpFile.exists()) indexDumpFile.delete();
OutputStream os = new BufferedOutputStream(new FileOutputStream(indexDumpFile));
public static void dumpHeap(File indexHeapFile, kelondroRow payloadrow, SortedMap<String, indexContainer> cache, serverLog log) throws IOException {
if (log != null) log.logInfo("creating rwi heap dump '" + indexHeapFile.getName() + "', " + cache.size() + " rwi's");
if (indexHeapFile.exists()) indexHeapFile.delete();
OutputStream os = new BufferedOutputStream(new FileOutputStream(indexHeapFile), 64 * 1024);
long startTime = System.currentTimeMillis();
long messageTime = System.currentTimeMillis() + 5000;
long wordsPerSecond = 0, wordcount = 0, urlcount = 0;
Map.Entry<String, indexContainer> entry;
long wordcount = 0, urlcount = 0;
String wordHash;
indexContainer container;
// write wCache
synchronized (cache) {
Iterator<Map.Entry<String, indexContainer>> i = cache.entrySet().iterator();
while (i.hasNext()) {
for (Map.Entry<String, indexContainer> entry: cache.entrySet()) {
// get entries
entry = i.next();
wordHash = entry.getKey();
container = entry.getValue();
// put entries on stack
// put entries on heap
if (container != null) {
os.write(wordHash.getBytes());
if (wordHash.length() < payloadrow.primaryKeyLength) {
for (int i = 0; i < payloadrow.primaryKeyLength - wordHash.length(); i++) os.write(0);
}
os.write(container.exportCollection());
}
wordcount++;
i.remove(); // free some mem
// write a log
if (System.currentTimeMillis() > messageTime) {
serverMemory.gc(1000, "indexRAMRI, for better statistic-1"); // for better statistic - thq
wordsPerSecond = wordcount * 1000
/ (1 + System.currentTimeMillis() - startTime);
log.logInfo("dump status: " + wordcount
+ " words done, "
+ (cache.size() / (wordsPerSecond + 1))
+ " seconds remaining, free mem = "
+ (serverMemory.free() / 1024 / 1024)
+ "MB");
messageTime = System.currentTimeMillis() + 5000;
}
urlcount += container.size();
}
}
os.flush();
os.close();
log.logInfo("finished dump of ram cache: " + urlcount + " word/URL relations in " + ((System.currentTimeMillis() - startTime) / 1000) + " seconds");
}
private void restore() throws IOException {
File indexDumpFile = new File(databaseRoot, indexArrayFileName);
if (!(indexDumpFile.exists())) return;
InputStream is = new BufferedInputStream(new FileInputStream(indexDumpFile));
long messageTime = System.currentTimeMillis() + 5000;
long wordCount = 0;
synchronized (cache) {
String wordHash;
byte[] word = new byte[12];
while (is.available() > 0) {
// read word
is.read(word);
wordHash = new String(word);
// read collection
indexContainer container = new indexContainer(wordHash, kelondroRowSet.importRowSet(is, payloadrow));
cache.put(wordHash, container);
wordCount++;
// protect against memory shortage
//while (serverMemory.free() < 1000000) {flushFromMem(); java.lang.System.gc();}
// write a log
if (System.currentTimeMillis() > messageTime) {
serverMemory.gc(1000, "indexRAMRI, for better statistic-2"); // for better statistic - thq
log.logInfo("restoring status: " + wordCount + " words done, free mem = " + (serverMemory.free() / 1024 / 1024) + "MB");
messageTime = System.currentTimeMillis() + 5000;
}
}
}
is.close();
if (log != null) log.logInfo("finished rwi heap dump: " + wordcount + " words, " + urlcount + " word/URL relations in " + ((System.currentTimeMillis() - startTime) / 1000) + " seconds");
}
public int size() {
return cache.size();
}
public synchronized int indexSize(String wordHash) {
indexContainer cacheIndex = (indexContainer) cache.get(wordHash);
if (cacheIndex == null) return 0;
return cacheIndex.size();
}
public synchronized kelondroCloneableIterator<indexContainer> wordContainers(String startWordHash, boolean rot) {
// we return an iterator object that creates top-level-clones of the indexContainers
// in the cache, so that manipulations of the iterated objects do not change
// objects in the cache.
return new wordContainerIterator(startWordHash, rot);
}
public class wordContainerIterator implements kelondroCloneableIterator<indexContainer> {
// this class exists, because the wCache cannot be iterated with rotation
// and because every indexContainer Object that is iterated must be returned as top-level-clone
// so this class simulates wCache.tailMap(startWordHash).values().iterator()
// plus the mentioned features
private boolean rot;
private Iterator<indexContainer> iterator;
public wordContainerIterator(String startWordHash, boolean rot) {
this.rot = rot;
this.iterator = (startWordHash == null) ? cache.values().iterator() : cache.tailMap(startWordHash).values().iterator();
// The collection's iterator will return the values in the order that their corresponding keys appear in the tree.
}
public static SortedMap<String, indexContainer> restoreHeap(File indexHeapFile, kelondroRow payloadrow, serverLog log) throws IOException {
if (!(indexHeapFile.exists())) throw new IOException("file " + indexHeapFile + " does not exist");
if (log != null) log.logInfo("restoring dump for rwi heap '" + indexHeapFile.getName() + "'");
public wordContainerIterator clone(Object secondWordHash) {
return new wordContainerIterator((String) secondWordHash, rot);
}
long start = System.currentTimeMillis();
SortedMap<String, indexContainer> cache = Collections.synchronizedSortedMap(new TreeMap<String, indexContainer>(new kelondroByteOrder.StringOrder(payloadrow.getOrdering())));
DataInputStream is = new DataInputStream(new BufferedInputStream(new FileInputStream(indexHeapFile), 64*1024));
public boolean hasNext() {
if (rot) return true;
return iterator.hasNext();
}
public indexContainer next() {
if (iterator.hasNext()) {
return ((indexContainer) iterator.next()).topLevelClone();
} else {
// rotation iteration
if (rot) {
iterator = cache.values().iterator();
return ((indexContainer) iterator.next()).topLevelClone();
} else {
return null;
}
}
}
public void remove() {
iterator.remove();
long urlCount = 0;
String wordHash;
byte[] word = new byte[payloadrow.primaryKeyLength];
while (is.available() > 0) {
// read word
is.read(word);
wordHash = new String(word);
// read collection
indexContainer container = new indexContainer(wordHash, kelondroRowSet.importRowSet(is, payloadrow));
cache.put(wordHash, container);
urlCount += container.size();
}
}
public boolean hasContainer(String wordHash) {
return cache.containsKey(wordHash);
is.close();
if (log != null) log.logInfo("finished rwi heap restore: " + cache.size() + " words, " + urlCount + " word/URL relations in " + ((System.currentTimeMillis() - start) / 1000) + " seconds");
return cache;
}
public int sizeContainer(String wordHash) {
indexContainer c = (indexContainer) cache.get(wordHash);
return (c == null) ? 0 : c.size();
}
public synchronized indexContainer getContainer(String wordHash, Set<String> urlselection) {
if (wordHash == null) return null;
public static kelondroBytesIntMap indexHeap(File indexHeapFile, kelondroRow payloadrow, serverLog log) throws IOException {
if (!(indexHeapFile.exists())) throw new IOException("file " + indexHeapFile + " does not exist");
if (indexHeapFile.length() >= (long) Integer.MAX_VALUE) throw new IOException("file " + indexHeapFile + " too large, index can only be crated for files less than 2GB");
if (log != null) log.logInfo("creating index for rwi heap '" + indexHeapFile.getName() + "'");
// retrieve container
indexContainer container = (indexContainer) cache.get(wordHash);
long start = System.currentTimeMillis();
kelondroBytesIntMap index = new kelondroBytesIntMap(payloadrow.primaryKeyLength, (kelondroByteOrder) payloadrow.getOrdering(), 0);
DataInputStream is = new DataInputStream(new BufferedInputStream(new FileInputStream(indexHeapFile), 64*1024));
// We must not use the container from cache to store everything we find,
// as that container remains linked to in the cache and might be changed later
// while the returned container is still in use.
// create a clone from the container
if (container != null) container = container.topLevelClone();
// select the urlselection
if ((urlselection != null) && (container != null)) container.select(urlselection);
return container;
}
public synchronized indexContainer deleteContainer(String wordHash) {
// returns the index that had been deleted
indexContainer container = (indexContainer) cache.remove(wordHash);
return container;
}
public synchronized boolean removeEntry(String wordHash, String urlHash) {
indexContainer c = (indexContainer) cache.get(wordHash);
if ((c != null) && (c.remove(urlHash) != null)) {
// removal successful
if (c.size() == 0) {
deleteContainer(wordHash);
} else {
cache.put(wordHash, c);
}
return true;
}
return false;
}
public synchronized int removeEntries(String wordHash, Set<String> urlHashes) {
if (urlHashes.size() == 0) return 0;
indexContainer c = (indexContainer) cache.get(wordHash);
int count;
if ((c != null) && ((count = c.removeEntries(urlHashes)) > 0)) {
// removal successful
if (c.size() == 0) {
deleteContainer(wordHash);
} else {
cache.put(wordHash, c);
}
return count;
}
return 0;
}
public synchronized int tryRemoveURLs(String urlHash) {
// this tries to delete an index from the cache that has this
// urlHash assigned. This can only work if the entry is really fresh
// Such entries must be searched in the latest entries
int delCount = 0;
Iterator<Map.Entry<String, indexContainer>> i = cache.entrySet().iterator();
Map.Entry<String, indexContainer> entry;
String wordhash;
indexContainer c;
while (i.hasNext()) {
entry = i.next();
wordhash = entry.getKey();
long urlCount = 0;
String wordHash;
byte[] word = new byte[payloadrow.primaryKeyLength];
int seek = 0, seek0;
while (is.available() > 0) {
// remember seek position
seek0 = seek;
// get container
c = entry.getValue();
if (c.remove(urlHash) != null) {
if (c.size() == 0) {
i.remove();
} else {
cache.put(wordhash, c); // superfluous?
}
delCount++;
}
}
return delCount;
}
public synchronized void addEntries(indexContainer container) {
// this puts the entries into the cache, not into the assortment directly
int added = 0;
if ((container == null) || (container.size() == 0)) return;
// put new words into cache
String wordHash = container.getWordHash();
indexContainer entries = (indexContainer) cache.get(wordHash); // null pointer exception? wordhash != null! must be cache==null
if (entries == null) {
entries = container.topLevelClone();
added = entries.size();
} else {
added = entries.putAllRecent(container);
}
if (added > 0) {
cache.put(wordHash, entries);
}
entries = null;
}
public synchronized void addEntry(String wordHash, indexRWIRowEntry newEntry, long updateTime, boolean dhtCase) {
indexContainer container = (indexContainer) cache.get(wordHash);
if (container == null) container = new indexContainer(wordHash, this.payloadrow, 1);
container.put(newEntry);
cache.put(wordHash, container);
}
public synchronized void close() {
// dump cache
try {
dump();
} catch (IOException e){
log.logSevere("unable to dump cache: " + e.getMessage(), e);
// read word
is.read(word);
wordHash = new String(word);
seek += wordHash.length();
// read collection
seek += kelondroRowSet.skipNextRowSet(is, payloadrow);
index.addi(word, seek0);
}
is.close();
if (log != null) log.logInfo("finished rwi heap indexing: " + urlCount + " word/URL relations in " + ((System.currentTimeMillis() - start) / 1000) + " seconds");
return index;
}
}

142
source/de/anomic/index/indexRAMRI.java
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@ -37,24 +37,21 @@ import java.util.TreeMap;
import de.anomic.kelondro.kelondroBase64Order;
import de.anomic.kelondro.kelondroBufferedRA;
import de.anomic.kelondro.kelondroByteOrder;
import de.anomic.kelondro.kelondroCloneableIterator;
import de.anomic.kelondro.kelondroException;
import de.anomic.kelondro.kelondroFixedWidthArray;
import de.anomic.kelondro.kelondroMScoreCluster;
import de.anomic.kelondro.kelondroNaturalOrder;
import de.anomic.kelondro.kelondroRow;
import de.anomic.kelondro.kelondroRow.EntryIndex;
import de.anomic.server.serverByteBuffer;
import de.anomic.server.serverFileUtils;
import de.anomic.server.serverMemory;
import de.anomic.server.logging.serverLog;
import de.anomic.yacy.yacySeedDB;
public final class indexRAMRI implements indexRI {
public final class indexRAMRI implements indexRI, indexRIReader {
// class variables
private final File databaseRoot;
protected final SortedMap<String, indexContainer> cache; // wordhash-container
protected SortedMap<String, indexContainer> cache; // wordhash-container
private final kelondroMScoreCluster<String> hashScore;
private final kelondroMScoreCluster<String> hashDate;
private long initTime;
@ -62,16 +59,14 @@ public final class indexRAMRI implements indexRI {
public int cacheReferenceCountLimit;
public long cacheReferenceAgeLimit;
private final serverLog log;
private String indexArrayFileName;
private File indexArrayFile, indexHeapFile;
private kelondroRow payloadrow;
private kelondroRow bufferStructureBasis;
public indexRAMRI(File databaseRoot, kelondroRow payloadrow, int wCacheReferenceCountLimitInit, long wCacheReferenceAgeLimitInit, String dumpname, serverLog log) {
public indexRAMRI(File databaseRoot, kelondroRow payloadrow, int wCacheReferenceCountLimitInit, long wCacheReferenceAgeLimitInit, String oldArrayName, String newHeapName, serverLog log) {
// creates a new index cache
// the cache has a back-end where indexes that do not fit in the cache are flushed
this.databaseRoot = databaseRoot;
this.cache = Collections.synchronizedSortedMap(new TreeMap<String, indexContainer>());
this.hashScore = new kelondroMScoreCluster<String>();
this.hashDate = new kelondroMScoreCluster<String>();
this.initTime = System.currentTimeMillis();
@ -79,7 +74,8 @@ public final class indexRAMRI implements indexRI {
this.cacheReferenceCountLimit = wCacheReferenceCountLimitInit;
this.cacheReferenceAgeLimit = wCacheReferenceAgeLimitInit;
this.log = log;
this.indexArrayFileName = dumpname;
this.indexArrayFile = new File(databaseRoot, oldArrayName);
this.indexHeapFile = new File(databaseRoot, newHeapName);
this.payloadrow = payloadrow;
this.bufferStructureBasis = new kelondroRow(
"byte[] wordhash-" + yacySeedDB.commonHashLength + ", " +
@ -89,10 +85,25 @@ public final class indexRAMRI implements indexRI {
kelondroBase64Order.enhancedCoder, 0);
// read in dump of last session
try {
restore();
} catch (IOException e){
log.logSevere("unable to restore cache dump: " + e.getMessage(), e);
if (indexArrayFile.exists()) {
this.cache = Collections.synchronizedSortedMap(new TreeMap<String, indexContainer>(new kelondroByteOrder.StringOrder(payloadrow.getOrdering())));
try {
restoreArray();
} catch (IOException e){
log.logSevere("unable to restore cache dump: " + e.getMessage(), e);
}
indexArrayFile.delete();
if (indexArrayFile.exists()) log.logSevere("cannot delete old array file: " + indexArrayFile.toString() + "; please delete manually");
} else if (indexHeapFile.exists()) {
this.cache = null;
try {
//indexContainerHeap.indexHeap(this.indexHeapFile, payloadrow, log); // for testing
this.cache = indexContainerHeap.restoreHeap(this.indexHeapFile, payloadrow, log);
} catch (IOException e){
log.logSevere("unable to restore cache dump: " + e.getMessage(), e);
}
} else {
this.cache = Collections.synchronizedSortedMap(new TreeMap<String, indexContainer>(new kelondroByteOrder.StringOrder(payloadrow.getOrdering())));
}
}
@ -108,97 +119,12 @@ public final class indexRAMRI implements indexRI {
return entries.updated();
}
private void dump() throws IOException {
log.logConfig("creating dump for index cache '" + indexArrayFileName + "', " + cache.size() + " words (and much more urls)");
File indexDumpFile = new File(databaseRoot, indexArrayFileName);
if (indexDumpFile.exists()) indexDumpFile.delete();
kelondroFixedWidthArray dumpArray = null;
kelondroBufferedRA writeBuffer = null;
if (false /*serverMemory.available() > 50 * bufferStructureBasis.objectsize() * cache.size()*/) {
writeBuffer = new kelondroBufferedRA();
dumpArray = new kelondroFixedWidthArray(writeBuffer, indexDumpFile.getCanonicalPath(), bufferStructureBasis, 0);
log.logInfo("started dump of ram cache: " + cache.size() + " words; memory-enhanced write");
} else {
dumpArray = new kelondroFixedWidthArray(indexDumpFile, bufferStructureBasis, 0);
log.logInfo("started dump of ram cache: " + cache.size() + " words; low-memory write");
}
long startTime = System.currentTimeMillis();
long messageTime = System.currentTimeMillis() + 5000;
long wordsPerSecond = 0, wordcount = 0, urlcount = 0;
Map.Entry<String, indexContainer> entry;
String wordHash;
indexContainer container;
long updateTime;
indexRWIRowEntry iEntry;
kelondroRow.Entry row = dumpArray.row().newEntry();
byte[] occ, time;
// write wCache
synchronized (cache) {
Iterator<Map.Entry<String, indexContainer>> i = cache.entrySet().iterator();
while (i.hasNext()) {
// get entries
entry = i.next();
wordHash = entry.getKey();
updateTime = getUpdateTime(wordHash);
container = entry.getValue();
// put entries on stack
if (container != null) {
Iterator<indexRWIRowEntry> ci = container.entries();
occ = kelondroNaturalOrder.encodeLong(container.size(), 4);
time = kelondroNaturalOrder.encodeLong(updateTime, 8);
while (ci.hasNext()) {
iEntry = ci.next();
row.setCol(0, wordHash.getBytes());
row.setCol(1, occ);
row.setCol(2, time);
row.setCol(3, iEntry.toKelondroEntry().bytes());
dumpArray.set((int) urlcount++, row);
}
}
wordcount++;
i.remove(); // free some mem
// write a log
if (System.currentTimeMillis() > messageTime) {
serverMemory.gc(1000, "indexRAMRI, for better statistic-1"); // for better statistic - thq
wordsPerSecond = wordcount * 1000
/ (1 + System.currentTimeMillis() - startTime);
log.logInfo("dump status: " + wordcount
+ " words done, "
+ (cache.size() / (wordsPerSecond + 1))
+ " seconds remaining, free mem = "
+ (serverMemory.free() / 1024 / 1024)
+ "MB");
messageTime = System.currentTimeMillis() + 5000;
}
}
}
if (writeBuffer != null) {
serverByteBuffer bb = writeBuffer.getBuffer();
//System.out.println("*** byteBuffer size = " + bb.length());
serverFileUtils.copy(bb.getBytes(), indexDumpFile);
writeBuffer.close();
}
dumpArray.close();
dumpArray = null;
log.logInfo("finished dump of ram cache: " + urlcount + " word/URL relations in " + ((System.currentTimeMillis() - startTime) / 1000) + " seconds");
}
private long restore() throws IOException {
File indexDumpFile = new File(databaseRoot, indexArrayFileName);
if (!(indexDumpFile.exists())) return 0;
private long restoreArray() throws IOException {
if (!(indexArrayFile.exists())) return 0;
kelondroFixedWidthArray dumpArray;
kelondroBufferedRA readBuffer = null;
if (false /*serverMemory.available() > indexDumpFile.length() * 2*/) {
readBuffer = new kelondroBufferedRA(new serverByteBuffer(serverFileUtils.read(indexDumpFile)));
dumpArray = new kelondroFixedWidthArray(readBuffer, indexDumpFile.getCanonicalPath(), bufferStructureBasis, 0);
log.logInfo("started restore of ram cache '" + indexArrayFileName + "', " + dumpArray.size() + " word/URL relations; memory-enhanced read");
} else {
dumpArray = new kelondroFixedWidthArray(indexDumpFile, bufferStructureBasis, 0);
log.logInfo("started restore of ram cache '" + indexArrayFileName + "', " + dumpArray.size() + " word/URL relations; low-memory read");
}
dumpArray = new kelondroFixedWidthArray(indexArrayFile, bufferStructureBasis, 0);
log.logInfo("started restore of ram cache '" + indexArrayFile.getName() + "', " + dumpArray.size() + " word/URL relations");
long startTime = System.currentTimeMillis();
long messageTime = System.currentTimeMillis() + 5000;
long urlCount = 0, urlsPerSecond = 0;
@ -233,7 +159,7 @@ public final class indexRAMRI implements indexRI {
if (readBuffer != null) readBuffer.close();
dumpArray.close();
dumpArray = null;
log.logConfig("finished restore: " + cache.size() + " words in " + ((System.currentTimeMillis() - startTime) / 1000) + " seconds");
log.logInfo("finished restore: " + cache.size() + " words in " + ((System.currentTimeMillis() - startTime) / 1000) + " seconds");
} catch (kelondroException e) {
// restore failed
log.logSevere("failed restore of indexCache array dump: " + e.getMessage(), e);
@ -242,9 +168,9 @@ public final class indexRAMRI implements indexRI {
}
return urlCount;
}
// cache settings
public int maxURLinCache() {
if (hashScore.size() == 0) return 0;
return hashScore.getMaxScore();
@ -514,7 +440,7 @@ public final class indexRAMRI implements indexRI {
public synchronized void close() {
// dump cache
try {
dump();
indexContainerHeap.dumpHeap(this.indexHeapFile, this.payloadrow, this.cache, this.log);
} catch (IOException e){
log.logSevere("unable to dump cache: " + e.getMessage(), e);
}

41
source/de/anomic/index/indexRIReader.java
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@ -0,0 +1,41 @@
// indexRIReader.java
// (C) 2008 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
// first published 2.4.2008 on http://yacy.net
//
// This is a part of YaCy, a peer-to-peer based web search engine
//
// $LastChangedDate: 2008-03-14 01:16:04 +0100 (Fr, 14 Mrz 2008) $
// $LastChangedRevision: 4558 $
// $LastChangedBy: orbiter $
//
// LICENSE
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
package de.anomic.index;
import java.util.Set;
import de.anomic.kelondro.kelondroCloneableIterator;
public interface indexRIReader {
public int size();
public boolean hasContainer(String wordHash); // should only be used if in case that true is returned the getContainer is NOT called
public indexContainer getContainer(String wordHash, Set<String> urlselection);
public kelondroCloneableIterator<indexContainer> wordContainers(String startWordHash, boolean rot);
public void close();
}

10
source/de/anomic/kelondro/kelondroAbstractRecords.java
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@ -584,20 +584,12 @@ public abstract class kelondroAbstractRecords implements kelondroRecords {
try {
byte[] d = getDescription();
String s = new String(d).substring(0, 2);
return orderBySignature(s);
return kelondroNaturalOrder.orderBySignature(s);
} catch (IOException e) {
return null;
}
}
public static kelondroByteOrder orderBySignature(String signature) {
kelondroByteOrder oo = null;
if (oo == null) oo = kelondroNaturalOrder.bySignature(signature);
if (oo == null) oo = kelondroBase64Order.bySignature(signature);
if (oo == null) oo = new kelondroNaturalOrder(true);
return oo;
}
public String filename() {
return filename;
}

8
source/de/anomic/kelondro/kelondroNaturalOrder.java
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@ -70,6 +70,14 @@ public final class kelondroNaturalOrder extends kelondroAbstractOrder<byte[]> im
return o;
}
public static kelondroByteOrder orderBySignature(String signature) {
kelondroByteOrder oo = null;
if (oo == null) oo = kelondroNaturalOrder.bySignature(signature);
if (oo == null) oo = kelondroBase64Order.bySignature(signature);
if (oo == null) oo = new kelondroNaturalOrder(true);
return oo;
}
public final static kelondroByteOrder bySignature(String signature) {
if (signature.equals("nd")) return new kelondroNaturalOrder(false);
if (signature.equals("nu")) return new kelondroNaturalOrder(true);

1
source/de/anomic/kelondro/kelondroOrder.java
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@ -68,4 +68,5 @@ public interface kelondroOrder<A> extends Comparator<A> {
public void rotate(A zero); // defines that the ordering rotates, and sets the zero point for the rotation
public boolean equals(kelondroOrder<A> o); // used to compare different order objects; they may define the same ordering
}

34
source/de/anomic/kelondro/kelondroRowSet.java
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@ -24,8 +24,8 @@
package de.anomic.kelondro;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
@ -72,22 +72,36 @@ public class kelondroRowSet extends kelondroRowCollection implements kelondroInd
}
}
public static kelondroRowSet importRowSet(InputStream is, kelondroRow rowdef) throws IOException {
public static kelondroRowSet importRowSet(DataInputStream is, kelondroRow rowdef) throws IOException {
byte[] byte2 = new byte[2];
byte[] byte4 = new byte[4];
is.read(byte4); int size = (int) kelondroNaturalOrder.decodeLong(byte4);
is.read(byte2); //short lastread = (short) kelondroNaturalOrder.decodeLong(byte2);
is.read(byte2); //short lastwrote = (short) kelondroNaturalOrder.decodeLong(byte2);
is.read(byte2); //String orderkey = new String(byte2);
is.read(byte2); short ordercol = (short) kelondroNaturalOrder.decodeLong(byte2);
is.read(byte2); short orderbound = (short) kelondroNaturalOrder.decodeLong(byte2);
is.readFully(byte4); int size = (int) kelondroNaturalOrder.decodeLong(byte4);
is.readFully(byte2); //short lastread = (short) kelondroNaturalOrder.decodeLong(byte2);
is.readFully(byte2); //short lastwrote = (short) kelondroNaturalOrder.decodeLong(byte2);
is.readFully(byte2); //String orderkey = new String(byte2);
is.readFully(byte2); short ordercol = (short) kelondroNaturalOrder.decodeLong(byte2);
is.readFully(byte2); short orderbound = (short) kelondroNaturalOrder.decodeLong(byte2);
assert rowdef.primaryKeyIndex == ordercol;
byte[] chunkcache = new byte[size * rowdef.objectsize];
int c = is.read(chunkcache);
assert c == chunkcache.length;
is.readFully(chunkcache);
return new kelondroRowSet(rowdef, size, chunkcache, orderbound);
}
public static int skipNextRowSet(DataInputStream is, kelondroRow rowdef) throws IOException {
byte[] byte2 = new byte[2];
byte[] byte4 = new byte[4];
is.readFully(byte4); int size = (int) kelondroNaturalOrder.decodeLong(byte4);
is.readFully(byte2); //short lastread = (short) kelondroNaturalOrder.decodeLong(byte2);
is.readFully(byte2); //short lastwrote = (short) kelondroNaturalOrder.decodeLong(byte2);
is.readFully(byte2); //String orderkey = new String(byte2);
is.readFully(byte2); short ordercol = (short) kelondroNaturalOrder.decodeLong(byte2);
is.readFully(byte2);
assert rowdef.primaryKeyIndex == ordercol;
int skip = size * rowdef.objectsize;
while (skip > 0) skip -= is.skip(skip);
return size * rowdef.objectsize + 14;
}
public void reset() {
super.reset();
this.profile = new kelondroProfile();

4
source/de/anomic/plasma/plasmaWordIndex.java
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@ -99,8 +99,8 @@ public final class plasmaWordIndex implements indexRI {
File textindexcache = new File(indexPrimaryTextLocation, "RICACHE");
if (!(textindexcache.exists())) textindexcache.mkdirs();
this.dhtOutCache = new indexRAMRI(textindexcache, indexRWIRowEntry.urlEntryRow, wCacheMaxChunk, wCacheMaxAge, "dump1.array", log);
this.dhtInCache = new indexRAMRI(textindexcache, indexRWIRowEntry.urlEntryRow, wCacheMaxChunk, wCacheMaxAge, "dump2.array", log);
this.dhtOutCache = new indexRAMRI(textindexcache, indexRWIRowEntry.urlEntryRow, wCacheMaxChunk, wCacheMaxAge, "dump1.array", "index.dhtout.heap", log);
this.dhtInCache = new indexRAMRI(textindexcache, indexRWIRowEntry.urlEntryRow, wCacheMaxChunk, wCacheMaxAge, "dump2.array", "index.dhtin.heap", log);
// create collections storage path
File textindexcollections = new File(indexPrimaryTextLocation, "RICOLLECTION");

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