Code cleanup

src/main/java/it/cavallium/dbengine/database/LLType.java

@@ -1,7 +1,7 @@
 package it.cavallium.dbengine.database;
 
 /**
- * https://lucene.apache.org/core/8_0_0/core/org/apache/lucene/document/Field.html
+ * <a href="https://lucene.apache.org/core/8_0_0/core/org/apache/lucene/document/Field.html">Field.html</a>
  */
 public enum LLType {
 	StringField,

src/main/java/it/cavallium/dbengine/database/disk/AbstractRocksDBColumn.java

@@ -357,7 +357,7 @@ public sealed abstract class AbstractRocksDBColumn<T extends RocksDB> implements
 	}
 
 	@Override
-	public boolean mayExists(@NotNull ReadOptions readOptions, Buf key) throws RocksDBException {
+	public boolean mayExists(@NotNull ReadOptions readOptions, Buf key) {
 		var closeReadLock = closeLock.readLock();
 		try {
 			ensureOpen();
@@ -504,7 +504,7 @@ public sealed abstract class AbstractRocksDBColumn<T extends RocksDB> implements
 			@NotNull WriteOptions writeOptions,
 			Buf key,
 			BinarySerializationFunction updater,
-			UpdateAtomicResultMode returnMode) throws RocksDBException {
+			UpdateAtomicResultMode returnMode) {
 		var closeReadLock = closeLock.readLock();
 		try {
 			ensureOpen();
@@ -543,7 +543,7 @@ public sealed abstract class AbstractRocksDBColumn<T extends RocksDB> implements
 			@NotNull WriteOptions writeOptions,
 			Buf key,
 			BinarySerializationFunction updater,
-			UpdateAtomicResultMode returnMode) throws RocksDBException;
+			UpdateAtomicResultMode returnMode);
 
 	@Override
 	@NotNull

src/main/java/it/cavallium/dbengine/database/disk/CachedIndexSearcherManager.java

@@ -40,10 +40,8 @@ public class CachedIndexSearcherManager extends SimpleResource implements IndexS
 
 	@Nullable
 	private final SnapshotsManager snapshotsManager;
-	private final ScheduledExecutorService luceneHeavyTasksScheduler;
 	private final Similarity similarity;
 	private final SearcherManager searcherManager;
-	private final Duration queryRefreshDebounceTime;
 
 	private final AtomicLong activeSearchers = new AtomicLong(0);
 	private final AtomicLong activeRefreshes = new AtomicLong(0);
@@ -59,9 +57,7 @@ public class CachedIndexSearcherManager extends SimpleResource implements IndexS
 			boolean writeAllDeletes,
 			Duration queryRefreshDebounceTime) {
 		this.snapshotsManager = snapshotsManager;
-		this.luceneHeavyTasksScheduler = luceneHeavyTasksScheduler;
 		this.similarity = similarity;
-		this.queryRefreshDebounceTime = queryRefreshDebounceTime;
 
 		try {
 			this.searcherManager = new SearcherManager(indexWriter, applyAllDeletes, writeAllDeletes, SEARCHER_FACTORY);

src/main/java/it/cavallium/dbengine/database/disk/LLIndexSearcher.java

@@ -25,8 +25,4 @@ public abstract class LLIndexSearcher extends SimpleResource implements Discardi
 	}
 
 	protected abstract IndexSearcher getIndexSearcherInternal();
-
-	public AtomicBoolean getClosed() {
-		return super.getClosed();
-	}
 }

src/main/java/it/cavallium/dbengine/database/disk/LLIndexSearcherImpl.java

@@ -24,8 +24,4 @@ public abstract class LLIndexSearcherImpl extends LLIndexSearcher {
 	public IndexSearcher getIndexSearcherInternal() {
 		return indexSearcher;
 	}
-
-	public AtomicBoolean getClosed() {
-		return super.getClosed();
-	}
 }

src/main/java/it/cavallium/dbengine/database/disk/LLLocalKeyValueDatabase.java

@@ -749,8 +749,7 @@ public class LLLocalKeyValueDatabase extends Backuppable implements LLKeyValueDa
 		return closeLock;
 	}
 
-	private void flushAndCloseDb(RocksDB db, Cache standardCache, Cache compressedCache, List<ColumnFamilyHandle> handles)
-			throws RocksDBException {
+	private void flushAndCloseDb(RocksDB db, Cache standardCache, Cache compressedCache, List<ColumnFamilyHandle> handles) {
 		var closeWriteLock = closeLock.writeLock();
 		try {
 			if (closed) {
@@ -1536,7 +1535,7 @@ public class LLLocalKeyValueDatabase extends Backuppable implements LLKeyValueDa
 			});
 			handles.clear();
 			deleteUnusedOldLogFiles();
-		} catch (RocksDBException e) {
+		} catch (Exception e) {
 			throw new DBException("Failed to close", e);
 		}
 	}

src/main/java/it/cavallium/dbengine/database/disk/LLLocalMigrationReactiveRocksIterator.java

@@ -21,8 +21,8 @@ import org.rocksdb.RocksDBException;
 public final class LLLocalMigrationReactiveRocksIterator {
 
 	private final RocksDBColumn db;
-	private LLRange range;
-	private Supplier<ReadOptions> readOptions;
+	private final LLRange range;
+	private final Supplier<ReadOptions> readOptions;
 
 	public LLLocalMigrationReactiveRocksIterator(RocksDBColumn db,
 			LLRange range,
@@ -41,17 +41,13 @@ public final class LLLocalMigrationReactiveRocksIterator {
 			throw new DBException("Failed to open iterator", e);
 		}
 		return streamWhileNonNull(() -> {
-			try {
-				if (rocksIterator.isValid()) {
-					var key = rocksIterator.keyBuf().copy();
-					var value = rocksIterator.valueBuf().copy();
-					rocksIterator.next(false);
-					return LLEntry.of(key, value);
-				} else {
-					return null;
-				}
-			} catch (RocksDBException ex) {
-				throw new CompletionException(new DBException("Failed to iterate", ex));
+			if (rocksIterator.isValid()) {
+				var key = rocksIterator.keyBuf().copy();
+				var value = rocksIterator.valueBuf().copy();
+				rocksIterator.next(false);
+				return LLEntry.of(key, value);
+			} else {
+				return null;
 			}
 		}).onClose(() -> {
 			rocksIterator.close();

src/main/java/it/cavallium/dbengine/database/disk/LLLocalSingleton.java

@@ -102,8 +102,6 @@ public class LLLocalSingleton implements LLSingleton {
 		UpdateAtomicResult result;
 		try (var readOptions = new ReadOptions(); var writeOptions = new WriteOptions()) {
 			result = db.updateAtomic(readOptions, writeOptions, name, updater, returnMode);
-		} catch (RocksDBException e) {
-			throw new DBException("Failed to read or write", e);
 		}
 		return switch (updateReturnMode) {
 			case NOTHING -> null;
@@ -120,8 +118,6 @@ public class LLLocalSingleton implements LLSingleton {
 		UpdateAtomicResult result;
 		try (var readOptions = new ReadOptions(); var writeOptions = new WriteOptions()) {
 			result = db.updateAtomic(readOptions, writeOptions, name, updater, DELTA);
-		} catch (RocksDBException e) {
-			throw new DBException("Failed to read or write", e);
 		}
 		return ((UpdateAtomicResultDelta) result).delta();
 	}

src/main/java/it/cavallium/dbengine/database/disk/RocksDBColumn.java

@@ -42,7 +42,7 @@ public sealed interface RocksDBColumn permits AbstractRocksDBColumn {
 
 	boolean exists(@NotNull ReadOptions readOptions, Buf key) throws RocksDBException;
 
-	boolean mayExists(@NotNull ReadOptions readOptions, Buf key) throws RocksDBException;
+	boolean mayExists(@NotNull ReadOptions readOptions, Buf key);
 
 	void put(@NotNull WriteOptions writeOptions, Buf key, Buf value) throws RocksDBException;
 
@@ -56,7 +56,7 @@ public sealed interface RocksDBColumn permits AbstractRocksDBColumn {
 			@NotNull WriteOptions writeOptions,
 			Buf key,
 			BinarySerializationFunction updater,
-			UpdateAtomicResultMode returnMode) throws RocksDBException;
+			UpdateAtomicResultMode returnMode);
 
 	void delete(WriteOptions writeOptions, Buf key) throws RocksDBException;
 
@@ -84,5 +84,5 @@ public sealed interface RocksDBColumn permits AbstractRocksDBColumn {
 
 	boolean supportsTransactions();
 
-	void forceCompaction(int volumeId) throws RocksDBException;
+	void forceCompaction(int volumeId);
 }

src/main/java/it/cavallium/dbengine/database/disk/rocksdb/RocksIteratorObj.java

@@ -201,7 +201,7 @@ public class RocksIteratorObj extends SimpleResource {
 		next(true);
 	}
 
-	public void next(boolean traceStats) throws RocksDBException {
+	public void next(boolean traceStats) {
 		ensureOpen();
 		if (traceStats) {
 			startedIterNext.increment();
@@ -217,7 +217,7 @@ public class RocksIteratorObj extends SimpleResource {
 		prev(true);
 	}
 
-	public void prev(boolean traceStats) throws RocksDBException {
+	public void prev(boolean traceStats) {
 		ensureOpen();
 		if (traceStats) {
 			startedIterNext.increment();

src/main/java/it/cavallium/dbengine/lucene/AlwaysDirectIOFSDirectory.java

@@ -1,24 +0,0 @@
-package it.cavallium.dbengine.lucene;
-
-import java.io.IOException;
-import java.nio.file.Path;
-import java.util.OptionalLong;
-import org.apache.lucene.misc.store.DirectIODirectory;
-import org.apache.lucene.store.FSDirectory;
-import org.apache.lucene.store.IOContext;
-
-public class AlwaysDirectIOFSDirectory extends DirectIODirectory {
-
-	public AlwaysDirectIOFSDirectory(Path path, int mergeBufferSize, long minBytesDirect) throws IOException {
-		super(FSDirectory.open(path), mergeBufferSize, minBytesDirect);
-	}
-
-	public AlwaysDirectIOFSDirectory(Path path) throws IOException {
-		super(FSDirectory.open(path));
-	}
-
-	@Override
-	protected boolean useDirectIO(String name, IOContext context, OptionalLong fileLength) {
-		return true;
-	}
-}

src/main/java/it/cavallium/dbengine/lucene/mlt/BigCompositeReader.java

@@ -69,7 +69,7 @@ public class BigCompositeReader<R extends IndexReader> {
 	public static <T extends IndexReader> Collection<String> getIndexedFields(BigCompositeReader<T> readers) {
 		return readers.subReadersList
 				.stream()
-				.map(t -> t.getContext())
+				.map(IndexReader::getContext)
 				.flatMap(l -> l.leaves().stream())
 				.flatMap((l) -> StreamSupport
 						.stream(l.reader().getFieldInfos().spliterator(), false)

src/main/java/it/cavallium/dbengine/lucene/mlt/MultiMoreLikeThis.java

@@ -86,11 +86,11 @@ import org.apache.lucene.util.PriorityQueue;
  * <pre class="prettyprint">
  * IndexReader ir = ...
  * IndexSearcher is = ...
- *
+ * <p>
  * MoreLikeThis mlt = new MoreLikeThis(ir);
  * Reader target = ... // orig source of doc you want to find similarities to
  * Query query = mlt.like( target);
- *
+ * <p>
  * Hits hits = is.search(query);
  * // now the usual iteration thru 'hits' - the only thing to watch for is to make sure
  * //you ignore the doc if it matches your 'target' document, as it should be similar to itself

src/main/java/it/cavallium/dbengine/lucene/searcher/AdaptiveLocalSearcher.java

@@ -42,7 +42,7 @@ public class AdaptiveLocalSearcher implements LocalSearcher {
 	}
 
 	@Override
-	public String getName() {
+	public String toString() {
 		return "adaptivelocal";
 	}
 

src/main/java/it/cavallium/dbengine/lucene/searcher/AdaptiveMultiSearcher.java

@@ -78,7 +78,7 @@ public class AdaptiveMultiSearcher implements MultiSearcher {
 	}
 
 	@Override
-	public String getName() {
+	public String toString() {
 		return "adaptive local";
 	}
 }

src/main/java/it/cavallium/dbengine/lucene/searcher/CountMultiSearcher.java

@@ -76,7 +76,7 @@ public class CountMultiSearcher implements MultiSearcher {
 	}
 
 	@Override
-	public String getName() {
+	public String toString() {
 		return "count";
 	}
 }

src/main/java/it/cavallium/dbengine/lucene/searcher/LocalSearcher.java

@@ -25,5 +25,6 @@ public interface LocalSearcher {
 	 * Get the name of this searcher type
 	 * @return searcher type name
 	 */
-	String getName();
+	@Override
+	String toString();
 }

src/main/java/it/cavallium/dbengine/lucene/searcher/PagedLocalSearcher.java

@@ -56,7 +56,7 @@ public class PagedLocalSearcher implements LocalSearcher {
 	}
 
 	@Override
-	public String getName() {
+	public String toString() {
 		return "paged local";
 	}
 

src/main/java/it/cavallium/dbengine/lucene/searcher/ScoredPagedMultiSearcher.java

@@ -214,7 +214,7 @@ public class ScoredPagedMultiSearcher implements MultiSearcher {
 	}
 
 	@Override
-	public String getName() {
+	public String toString() {
 		return "scored paged multi";
 	}
 

src/main/java/it/cavallium/dbengine/lucene/searcher/StandardSearcher.java

@@ -131,7 +131,7 @@ public class StandardSearcher implements MultiSearcher {
 	}
 
 	@Override
-	public String getName() {
+	public String toString() {
 		return "standard";
 	}
 }

src/main/java/it/cavallium/dbengine/lucene/searcher/UnsortedStreamingMultiSearcher.java

@@ -67,7 +67,7 @@ public class UnsortedStreamingMultiSearcher implements MultiSearcher {
 	}
 
 	@Override
-	public String getName() {
+	public String toString() {
 		return "unsorted streaming multi";
 	}
 }

src/test/java/it/cavallium/dbengine/tests/SwappableLuceneSearcher.java

@@ -1,7 +1,6 @@
 package it.cavallium.dbengine.tests;
 
 import static java.util.Objects.requireNonNull;
-import static java.util.Objects.requireNonNullElseGet;
 
 import it.cavallium.dbengine.database.LLKeyScore;
 import it.cavallium.dbengine.database.disk.LLIndexSearcher;
@@ -42,17 +41,17 @@ public class SwappableLuceneSearcher implements LocalSearcher, MultiSearcher, Cl
 	}
 
 	@Override
-	public String getName() {
+	public String toString() {
 		var single = this.single.get();
 		var multi = this.multi.get();
 		if (single == multi) {
 			if (single == null) {
 				return "swappable";
 			} else {
-				return single.getName();
+				return single.toString();
 			}
 		} else {
-			return "swappable[single=" + single.getName() + ",multi=" + multi.getName() + "]";
+			return "swappable[single=" + single.toString() + ",multi=" + multi.toString() + "]";
 		}
 	}
 

src/test/java/it/cavallium/dbengine/tests/TestLuceneIndex.java

@@ -157,7 +157,7 @@ public class TestLuceneIndex {
 				if (customSearcher instanceof MultiSearcher multiSearcher) {
 					tempDb.swappableLuceneSearcher().setMulti(multiSearcher);
 				} else {
-					throw new IllegalArgumentException("Expected a LuceneMultiSearcher, got a LuceneLocalSearcher: " + customSearcher.getName());
+					throw new IllegalArgumentException("Expected a LuceneMultiSearcher, got a LuceneLocalSearcher: " + customSearcher.toString());
 				}
 			}
 		} else {

src/test/java/it/cavallium/dbengine/tests/TestLuceneSearches.java

@@ -170,7 +170,7 @@ public class TestLuceneSearches {
 			throws Throwable {
 		var searchers = getSearchers(expectedQueryType);
 		for (LocalSearcher searcher : searchers) {
-			log.info("Using searcher \"{}\"", searcher.getName());
+			log.info("Using searcher \"{}\"", searcher.toString());
 			consumer.accept(searcher);
 		}
 	}
@@ -196,7 +196,7 @@ public class TestLuceneSearches {
 				if (customSearcher instanceof MultiSearcher multiSearcher) {
 					tempDb.swappableLuceneSearcher().setMulti(multiSearcher);
 				} else {
-					throw new IllegalArgumentException("Expected a LuceneMultiSearcher, got a LuceneLocalSearcher: " + customSearcher.getName());
+					throw new IllegalArgumentException("Expected a LuceneMultiSearcher, got a LuceneLocalSearcher: " + customSearcher.toString());
 				}
 			}
 		} else {

src/test/java/it/cavallium/dbengine/tests/UnsortedUnscoredSimpleMultiSearcher.java

@@ -85,7 +85,7 @@ public class UnsortedUnscoredSimpleMultiSearcher implements MultiSearcher {
 	}
 
 	@Override
-	public String getName() {
+	public String toString() {
 		return "unsorted unscored simple multi";
 	}
 }