Package com.orientechnologies.orient.core.index

Class OIndexOneValue

java.lang.Object

com.orientechnologies.orient.core.index.OIndexAbstract

com.orientechnologies.orient.core.index.OIndexOneValue

All Implemented Interfaces:

OIndex, OIndexInternal, Comparable<OIndex>

Direct Known Subclasses:

OIndexDictionary, OIndexUnique

public abstract class OIndexOneValue
extends OIndexAbstract

Abstract Index implementation that allows only one value for a key.

Author:

Luca Garulli

Nested Class Summary

Nested classes/interfaces inherited from class com.orientechnologies.orient.core.index.OIndexAbstract

OIndexAbstract.PartialSearchMode

Field Summary

Fields inherited from class com.orientechnologies.orient.core.index.OIndexAbstract

apiVersion, CONFIG_MAP_RID, im, indexId, storage

Fields inherited from interface com.orientechnologies.orient.core.index.OIndexInternal

ALGORITHM, CONFIG_AUTOMATIC, CONFIG_KEYTYPE, CONFIG_NAME, CONFIG_TYPE, INDEX_DEFINITION, INDEX_DEFINITION_CLASS, INDEX_VERSION, MERGE_KEYS, METADATA, VALUE_CONTAINER_ALGORITHM

Constructor Summary

Constructors

Constructor	Description
OIndexOneValue(OIndexMetadata im, OStorage storage)

Method Summary

Modifier and Type	Method	Description
ORawPair<Object,ORID>	calculateTxIndexEntry(Object key, ORID backendValue, OTransactionIndexChanges indexChanges)
Stream<ORawPair<Object,ORID>>	descStream()
Object	get(Object key)	Deprecated.
Stream<ORID>	getRids(Object key)
Stream<ORID>	getRidsIgnoreTx(Object key)
abstract IndexEngineValidator<Object,ORID>	getUniqueValidator()
boolean	isUnique()
OIndexOneValue	put(Object key, OIdentifiable value)	Inserts a new entry in the index.
long	size()
Stream<ORawPair<Object,ORID>>	stream()
Stream<ORawPair<Object,ORID>>	streamEntries(Collection<?> keys, boolean ascSortOrder)	Returns stream which presents data associated with passed in keys.
Stream<ORawPair<Object,ORID>>	streamEntriesBetween(Object fromKey, boolean fromInclusive, Object toKey, boolean toInclusive, boolean ascOrder)	Returns stream which presents subset of index data between passed in keys.
Stream<ORawPair<Object,ORID>>	streamEntriesMajor(Object fromKey, boolean fromInclusive, boolean ascOrder)	Returns stream which presents subset of data which associated with key which is greater than passed in key.
Stream<ORawPair<Object,ORID>>	streamEntriesMinor(Object toKey, boolean toInclusive, boolean ascOrder)	Returns stream which presents subset of data which associated with key which is less than passed in key.

Methods inherited from class com.orientechnologies.orient.core.index.OIndexAbstract

acquireAtomicExclusiveLock, acquireExclusiveLock, acquireSharedLock, addCluster, clear, close, compareTo, count, create, cursor, delete, descCursor, doDelete, doReloadIndexEngine, enhanceFromCompositeKeyBetweenAsc, enhanceFromCompositeKeyBetweenDesc, enhanceToCompositeKeyBetweenAsc, enhanceToCompositeKeyBetweenDesc, equals, flush, getAlgorithm, getClusters, getCollatingValue, getConfiguration, getDatabase, getDatabaseName, getDefinition, getFirstKey, getIndexId, getIndexNameByKey, getInternal, getKeySize, getKeyTypes, getLastKey, getMetadata, getName, getRebuildVersion, getSize, getType, getVersion, hashCode, hasRangeQuerySupport, interpretTxKeyChanges, isAutomatic, isRebuilding, iterateEntries, iterateEntriesBetween, iterateEntriesMajor, iterateEntriesMinor, keyCursor, keyStream, loadFromConfiguration, loadMetadata, loadMetadataFromDoc, loadMetadataInternal, manualIndexesWarning, rebuild, rebuild, releaseExclusiveLock, releaseSharedLock, remove, remove, removeCluster, toString, updateConfiguration

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.orientechnologies.orient.core.index.OIndex

supportsOrderedIterations

Methods inherited from interface com.orientechnologies.orient.core.index.OIndexInternal

canBeUsedInEqualityOperators, isNativeTxSupported

Constructor Details

OIndexOneValue

public OIndexOneValue(OIndexMetadata im,
 OStorage storage)

Method Details

get

@Deprecated
public Object get(Object key)

Deprecated.

Description copied from interface: OIndex

Gets the set of records associated with the passed key.

Parameters:

key - The key to search

Returns:

The Record set if found, otherwise an empty Set

getRidsIgnoreTx

public Stream<ORID> getRidsIgnoreTx(Object key)

getRids

public Stream<ORID> getRids(Object key)

streamEntries

public Stream<ORawPair<Object,ORID>> streamEntries(Collection<?> keys,
 boolean ascSortOrder)

Description copied from interface: OIndexInternal

Returns stream which presents data associated with passed in keys.

Parameters:

keys - Keys data of which should be returned.

ascSortOrder - Flag which determines whether data iterated by stream should be in ascending or descending order.

Returns:

stream which presents data associated with passed in keys.

streamEntriesBetween

public Stream<ORawPair<Object,ORID>> streamEntriesBetween(Object fromKey,
 boolean fromInclusive,
 Object toKey,
 boolean toInclusive,
 boolean ascOrder)

Description copied from interface: OIndexInternal

Returns stream which presents subset of index data between passed in keys.

Parameters:

fromKey - Lower border of index data.

fromInclusive - Indicates whether lower border should be inclusive or exclusive.

toKey - Upper border of index data.

toInclusive - Indicates whether upper border should be inclusive or exclusive.

ascOrder - Flag which determines whether data iterated by stream should be in ascending or descending order.

Returns:

Cursor which presents subset of index data between passed in keys.

streamEntriesMajor

public Stream<ORawPair<Object,ORID>> streamEntriesMajor(Object fromKey,
 boolean fromInclusive,
 boolean ascOrder)

Description copied from interface: OIndexInternal

Returns stream which presents subset of data which associated with key which is greater than passed in key.

Parameters:

fromKey - Lower border of index data.

fromInclusive - Indicates whether lower border should be inclusive or exclusive.

ascOrder - Flag which determines whether data iterated by stream should be in ascending or descending order.

Returns:

stream which presents subset of data which associated with key which is greater than passed in key.

streamEntriesMinor

public Stream<ORawPair<Object,ORID>> streamEntriesMinor(Object toKey,
 boolean toInclusive,
 boolean ascOrder)

Description copied from interface: OIndexInternal

Returns stream which presents subset of data which associated with key which is less than passed in key.

Parameters:

toKey - Upper border of index data.

toInclusive - Indicates Indicates whether upper border should be inclusive or exclusive.

ascOrder - Flag which determines whether data iterated by stream should be in ascending or descending order.

Returns:

stream which presents subset of data which associated with key which is less than passed in key.

size

public long size()

Returns:

number of entries in the index.

stream

public Stream<ORawPair<Object,ORID>> stream()

descStream

public Stream<ORawPair<Object,ORID>> descStream()

isUnique

public boolean isUnique()

Specified by:

isUnique in interface OIndex

Overrides:

isUnique in class OIndexAbstract

calculateTxIndexEntry

public ORawPair<Object,ORID> calculateTxIndexEntry(Object key,
 ORID backendValue,
 OTransactionIndexChanges indexChanges)

put

public OIndexOneValue put(Object key,
 OIdentifiable value)

Description copied from interface: OIndex

Inserts a new entry in the index. The behaviour depends by the index implementation.

Parameters:

key - Entry's key

value - Entry's value as OIdentifiable instance

Returns:

The index instance itself to allow in chain calls

getUniqueValidator

public abstract IndexEngineValidator<Object,ORID> getUniqueValidator()