org.apache.lucene.codecs

Class UndeadNormsProducer

java.lang.Object

org.apache.lucene.codecs.NormsProducer

org.apache.lucene.codecs.UndeadNormsProducer

All Implemented Interfaces:

Closeable, AutoCloseable, Accountable

public class UndeadNormsProducer
extends NormsProducer

Used only for backwards compatibility corner case, to provide re-animated norms when all fields are undead.

Field Summary

Fields

Modifier and Type	Field and Description
static NormsProducer	INSTANCE Use this instance
static String	LEGACY_UNDEAD_NORMS_KEY Used to bring undead norms back to life.

Method Summary

Methods

Modifier and Type	Method and Description
void	checkIntegrity() Checks consistency of this producer
void	close()
Collection<Accountable>	getChildResources() Returns nested resources of this class.
NormsProducer	getMergeInstance() Returns an instance optimized for merging.
NumericDocValues	getNorms(FieldInfo field) Returns NumericDocValues for this field.
static boolean	isUndead(FieldInfo fieldInfo) Returns true if this field has undead norms.
static boolean	isUndeadArmy(FieldInfos fieldInfos)
long	ramBytesUsed() Return the memory usage of this object in bytes.
static void	setUndead(Map<String,String> attributes) Call this to note that the field with these attributes has undead norms.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

LEGACY_UNDEAD_NORMS_KEY

public static final String LEGACY_UNDEAD_NORMS_KEY

Used to bring undead norms back to life.

INSTANCE

public static final NormsProducer INSTANCE

Use this instance

Method Detail

isUndeadArmy

public static boolean isUndeadArmy(FieldInfos fieldInfos)

isUndead

public static boolean isUndead(FieldInfo fieldInfo)

Returns true if this field has undead norms.

setUndead

public static void setUndead(Map<String,String> attributes)

Call this to note that the field with these attributes has undead norms.

getNorms

public NumericDocValues getNorms(FieldInfo field)
                          throws IOException

Description copied from class: NormsProducer

Returns NumericDocValues for this field. The returned instance need not be thread-safe: it will only be used by a single thread.

Specified by:

getNorms in class NormsProducer

Throws:

IOException

close

public void close()

ramBytesUsed

public long ramBytesUsed()

Description copied from interface: Accountable

Return the memory usage of this object in bytes. Negative values are illegal.

getChildResources

public Collection<Accountable> getChildResources()

Description copied from interface: Accountable

Returns nested resources of this class. The result should be a point-in-time snapshot (to avoid race conditions).

See Also:

Accountables

checkIntegrity

public void checkIntegrity()
                    throws IOException

Description copied from class: NormsProducer

Checks consistency of this producer

Note that this may be costly in terms of I/O, e.g. may involve computing a checksum value against large data files.

Specified by:

checkIntegrity in class NormsProducer

Throws:

IOException

getMergeInstance

public NormsProducer getMergeInstance()
                               throws IOException

Description copied from class: NormsProducer

Returns an instance optimized for merging.

The default implementation returns this

Overrides:

getMergeInstance in class NormsProducer

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object