Package com.illumon.iris.db.v2.locations.parquet.topage

Class ToPageWithDictionary<DATA_TYPE,ATTR extends Attributes.Any>

java.lang.Object

com.illumon.iris.db.v2.locations.parquet.topage.ToPageWithDictionary<DATA_TYPE,ATTR>

All Implemented Interfaces:

ToPage<ATTR,DATA_TYPE[]>

public class ToPageWithDictionary<DATA_TYPE,ATTR extends Attributes.Any>
extends Object
implements ToPage<ATTR,DATA_TYPE[]>

Nested Class Summary

Nested classes/interfaces inherited from interface com.illumon.iris.db.v2.locations.parquet.topage.ToPage

ToPage.Wrap<ATTR extends Attributes.Any,INNER_RESULT,OUTER_RESULT>

Method Summary

Modifier and Type	Method	Description
DATA_TYPE[]	convertResult(Object result)
ChunkType	getChunkType()
ObjectChunk<DATA_TYPE,ATTR>	getDictionaryChunk()
ToPage<Attributes.DictionaryKeys,int[]>	getDictionaryKeysToPage()
Class<DATA_TYPE>	getNativeType()
Object	getResult(io.deephaven.parquet.base.ColumnPageReader columnPageReader)
StringSetImpl.ReversibleLookup<DATA_TYPE>	getReversibleLookup()

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.illumon.iris.db.v2.locations.parquet.topage.ToPage

getNativeComponentType, makeDbArray, nullValue, toPage

Method Details

getNativeType

@NotNull public final Class<DATA_TYPE> getNativeType()

Specified by:

getNativeType in interface ToPage<DATA_TYPE,ATTR extends Attributes.Any>

Returns:

The native type for the elements of the arrays produced by this object.

getChunkType

@NotNull public final ChunkType getChunkType()

Specified by:

getChunkType in interface ToPage<DATA_TYPE,ATTR extends Attributes.Any>

Returns:

The chunk type used to wrap the arrays produced by this object.

getResult

@NotNull public final Object getResult(@NotNull io.deephaven.parquet.base.ColumnPageReader columnPageReader) throws IOException

Specified by:

getResult in interface ToPage<DATA_TYPE,ATTR extends Attributes.Any>

Returns:

Gets the result from the columnPageReader.

Throws:

IOException

convertResult

@NotNull public final DATA_TYPE[] convertResult(@NotNull Object result)

Specified by:

convertResult in interface ToPage<DATA_TYPE,ATTR extends Attributes.Any>

Returns:

Produce the array of values from the result

getDictionaryChunk

@NotNull public final ObjectChunk<DATA_TYPE,ATTR> getDictionaryChunk()

Specified by:

getDictionaryChunk in interface ToPage<DATA_TYPE,ATTR extends Attributes.Any>

Returns:

the dictionary stored for this column, if one exists, otherwise null.

getReversibleLookup

@NotNull public final StringSetImpl.ReversibleLookup<DATA_TYPE> getReversibleLookup()

Specified by:

getReversibleLookup in interface ToPage<DATA_TYPE,ATTR extends Attributes.Any>

Returns:

an reverse lookup map of the dictionary.

getDictionaryKeysToPage

@NotNull public final ToPage<Attributes.DictionaryKeys,int[]> getDictionaryKeysToPage()

Specified by:

getDictionaryKeysToPage in interface ToPage<DATA_TYPE,ATTR extends Attributes.Any>

Returns:

an object implementing ToPage which will read the integral Dictionary Indices when there's a dictionary for this column (as opposed to the values, which this object's toPage will return). This will return null iff ToPage.getDictionaryChunk() returns null.