Package org.apache.druid.segment.nested

Class DictionaryIdLookup

java.lang.Object

org.apache.druid.segment.nested.DictionaryIdLookup

All Implemented Interfaces:

Closeable, AutoCloseable

public final class DictionaryIdLookup
extends Object
implements Closeable

Value to dictionary id lookup, backed with memory mapped dictionaries populated lazily by the supplied DictionaryWriter.

Constructor Summary

Constructors

Constructor	Description
DictionaryIdLookup(String name, File tempBaseDir, DictionaryWriter<String> stringDictionaryWriter, DictionaryWriter<Long> longDictionaryWriter, DictionaryWriter<Double> doubleDictionaryWriter, DictionaryWriter<int[]> arrayDictionaryWriter)

Method Summary

Modifier and Type	Method	Description
void	close()
SegmentFileMapper	getArrayBufferMapper()
int	getArrayCardinality()
int[]	getArrayValue(int id)
Object	getDictionaryValue(int id)
SegmentFileMapper	getDoubleBufferMapper()
int	getDoubleCardinality()
SegmentFileMapper	getLongBufferMapper()
int	getLongCardinality()
SegmentFileMapper	getStringBufferMapper()
int	getStringCardinality()
int	lookupArray(int[] value)
int	lookupDouble(Double value)
int	lookupLong(Long value)
int	lookupString(String value)

Methods inherited from class java.lang.Object

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

Constructor Details

DictionaryIdLookup

public DictionaryIdLookup(String name,
 File tempBaseDir,
 @Nullable
 DictionaryWriter<String> stringDictionaryWriter,
 @Nullable
 DictionaryWriter<Long> longDictionaryWriter,
 @Nullable
 DictionaryWriter<Double> doubleDictionaryWriter,
 @Nullable
 DictionaryWriter<int[]> arrayDictionaryWriter)

Method Details

getArrayValue

public int[] getArrayValue(int id)

getDictionaryValue

@Nullable
public Object getDictionaryValue(int id)

lookupString

public int lookupString(@Nullable
 String value)

lookupLong

public int lookupLong(@Nullable
 Long value)

lookupDouble

public int lookupDouble(@Nullable
 Double value)

lookupArray

public int lookupArray(@Nullable
 int[] value)

getStringBufferMapper

@Nullable
public SegmentFileMapper getStringBufferMapper()

getLongBufferMapper

@Nullable
public SegmentFileMapper getLongBufferMapper()

getDoubleBufferMapper

@Nullable
public SegmentFileMapper getDoubleBufferMapper()

getArrayBufferMapper

@Nullable
public SegmentFileMapper getArrayBufferMapper()

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

getStringCardinality

public int getStringCardinality()

getLongCardinality

public int getLongCardinality()

getDoubleCardinality

public int getDoubleCardinality()

getArrayCardinality

public int getArrayCardinality()