Package com.arcadedb.index.lsm

Class LSMTreeIndexCompacted

java.lang.Object

com.arcadedb.engine.PaginatedComponent

com.arcadedb.index.lsm.LSMTreeIndexAbstract

com.arcadedb.index.lsm.LSMTreeIndexCompacted

public class LSMTreeIndexCompacted
extends LSMTreeIndexAbstract

The first page (main page) contains the total pages under the fields "compactedPageNumberOfSeries". This is to avoid concurrent read/write while compaction.

Nested Class Summary

Nested classes/interfaces inherited from class com.arcadedb.index.lsm.LSMTreeIndexAbstract

LSMTreeIndexAbstract.COMPACTING_STATUS, LSMTreeIndexAbstract.LookupResult, LSMTreeIndexAbstract.NULL_STRATEGY

Field Summary

Fields

Modifier and Type	Field	Description
static String	NOTUNIQUE_INDEX_EXT
static String	UNIQUE_INDEX_EXT

Fields inherited from class com.arcadedb.index.lsm.LSMTreeIndexAbstract

binaryKeyTypes, comparator, DEF_PAGE_SIZE, HIGHER, keyTypes, LOWER, mainIndex, nullStrategy, REMOVED_ENTRY_RID, serializer, TEMP_EXT, unique, valueType

Fields inherited from class com.arcadedb.engine.PaginatedComponent

database, file, id, name, pageCount, pageSize, version

Constructor Summary

Constructors

Modifier	Constructor	Description
	LSMTreeIndexCompacted(LSMTreeIndex mainIndex, DatabaseInternal database, String name, boolean unique, String filePath, byte[] keyTypes, int pageSize)	Called at cloning time.
protected	LSMTreeIndexCompacted(LSMTreeIndex mainIndex, DatabaseInternal database, String name, boolean unique, String filePath, int id, PaginatedFile.MODE mode, int pageSize, int version)	Called at load time (1st page only).

Method Summary

Modifier and Type	Method	Description
MutablePage	appendDuringCompaction(Binary keyValueContent, MutablePage currentPage, TrackableBinary currentPageBuffer, int compactedPageNumberOfSeries, Object[] keys, RID[] rids)
protected LSMTreeIndexAbstract.LookupResult	compareKey(Binary currentPageBuffer, int startIndexArray, Object[] convertedKeys, int mid, int count, int purpose)
protected MutablePage	createNewPage(int compactedPageNumberOfSeries)
Set<IndexCursorEntry>	get(Object[] keys, int limit)
List<LSMTreeIndexUnderlyingCompactedSeriesCursor>	newIterators(boolean ascendingOrder, Object[] fromKeys)
protected void	searchInCompactedIndex(Object[] originalKeys, Object[] convertedKeys, int limit, Set<IndexCursorEntry> set, Set<RID> removedRIDs)
protected MutablePage	setCompactedTotalPages()

Methods inherited from class com.arcadedb.index.lsm.LSMTreeIndexAbstract

checkForNulls, compareKey, compareKeys, convertKeys, drop, getCount, getFileId, getHeaderSize, getKeyInPagePosition, getKeyTypes, getMainComponent, getNullStrategy, getOriginalRID, getPageBound, getPaginatedComponent, getSerializedKeySize, getStats, getValuesFreePosition, isDeletedEntry, isKeyNull, isMutable, isUnique, lookupInPage, lookupInPageAndAddInResultset, readEntryValues, removeTempSuffix, setCount, setMutable, setValuesFreePosition, toString, writeEntry, writeEntry

Methods inherited from class com.arcadedb.engine.PaginatedComponent

close, getDatabase, getId, getName, getOSFile, getPageSize, getTotalPages, getVersion, onAfterCommit, onAfterLoad, setPageCount

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

UNIQUE_INDEX_EXT

public static final String UNIQUE_INDEX_EXT

See Also:

Constant Field Values

NOTUNIQUE_INDEX_EXT

public static final String NOTUNIQUE_INDEX_EXT

See Also:

Constant Field Values

Constructor Detail

LSMTreeIndexCompacted

public LSMTreeIndexCompacted(LSMTreeIndex mainIndex,
                             DatabaseInternal database,
                             String name,
                             boolean unique,
                             String filePath,
                             byte[] keyTypes,
                             int pageSize)
                      throws IOException

Called at cloning time.

Throws:

IOException

LSMTreeIndexCompacted

protected LSMTreeIndexCompacted(LSMTreeIndex mainIndex,
                                DatabaseInternal database,
                                String name,
                                boolean unique,
                                String filePath,
                                int id,
                                PaginatedFile.MODE mode,
                                int pageSize,
                                int version)
                         throws IOException

Called at load time (1st page only).

Throws:

IOException

Method Detail

get

public Set<IndexCursorEntry> get(Object[] keys,
                                 int limit)

appendDuringCompaction

public MutablePage appendDuringCompaction(Binary keyValueContent,
                                          MutablePage currentPage,
                                          TrackableBinary currentPageBuffer,
                                          int compactedPageNumberOfSeries,
                                          Object[] keys,
                                          RID[] rids)
                                   throws IOException,
                                          InterruptedException

Throws:

IOException

InterruptedException

compareKey

protected LSMTreeIndexAbstract.LookupResult compareKey(Binary currentPageBuffer,
                                                       int startIndexArray,
                                                       Object[] convertedKeys,
                                                       int mid,
                                                       int count,
                                                       int purpose)

Specified by:

compareKey in class LSMTreeIndexAbstract

purpose - 0 = exists, 1 = retrieve, 2 = ascending iterator, 3 = descending iterator

createNewPage

protected MutablePage createNewPage(int compactedPageNumberOfSeries)

newIterators

public List<LSMTreeIndexUnderlyingCompactedSeriesCursor> newIterators(boolean ascendingOrder,
                                                                      Object[] fromKeys)
                                                               throws IOException

Throws:

IOException

searchInCompactedIndex

protected void searchInCompactedIndex(Object[] originalKeys,
                                      Object[] convertedKeys,
                                      int limit,
                                      Set<IndexCursorEntry> set,
                                      Set<RID> removedRIDs)
                               throws IOException

Throws:

IOException

setCompactedTotalPages

protected MutablePage setCompactedTotalPages()
                                      throws IOException

Throws:

IOException