Package org.apache.druid.segment

Class SegmentSchemaMapping

java.lang.Object

org.apache.druid.segment.SegmentSchemaMapping

public class SegmentSchemaMapping
extends Object

Compact representation of segment schema for multiple segments. Note, that this is a mutable class.

Constructor Summary

Constructors

Constructor	Description
SegmentSchemaMapping(int schemaVersion)
SegmentSchemaMapping(Map<String,SegmentMetadata> segmentIdToMetadataMap, Map<String,SchemaPayload> schemaFingerprintToPayloadMap, int schemaVersion)

Method Summary

Modifier and Type	Method	Description
void	addSchema(SegmentId segmentId, SchemaPayloadPlus schemaPayloadPlus, String fingerprint)	Add schema information for the segment.
boolean	equals(Object o)
int	getSchemaCount()
Map<String,SchemaPayload>	getSchemaFingerprintToPayloadMap()
int	getSchemaVersion()
Map<String,SegmentMetadata>	getSegmentIdToMetadataMap()
int	hashCode()
boolean	isNonEmpty()
void	merge(SegmentSchemaMapping other)	Merge with another instance.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

SegmentSchemaMapping

public SegmentSchemaMapping(Map<String,SegmentMetadata> segmentIdToMetadataMap,
 Map<String,SchemaPayload> schemaFingerprintToPayloadMap,
 int schemaVersion)

SegmentSchemaMapping

public SegmentSchemaMapping(int schemaVersion)

Method Details

getSegmentIdToMetadataMap

public Map<String,SegmentMetadata> getSegmentIdToMetadataMap()

getSchemaFingerprintToPayloadMap

public Map<String,SchemaPayload> getSchemaFingerprintToPayloadMap()

getSchemaVersion

public int getSchemaVersion()

isNonEmpty

public boolean isNonEmpty()

addSchema

public void addSchema(SegmentId segmentId,
 SchemaPayloadPlus schemaPayloadPlus,
 String fingerprint)

Add schema information for the segment.

merge

public void merge(SegmentSchemaMapping other)

Merge with another instance.

getSchemaCount

public int getSchemaCount()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object