Package io.deephaven.parquet.table.pagestore.topage

Class ToPageWithDictionary<DATA_TYPE,ATTR extends Any>

java.lang.Object

io.deephaven.parquet.table.pagestore.topage.ToPageWithDictionary<DATA_TYPE,ATTR>

All Implemented Interfaces:

ToPage<ATTR,DATA_TYPE[]>

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

Nested Class Summary

Nested classes/interfaces inherited from interface io.deephaven.parquet.table.pagestore.topage.ToPage

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

Method Summary

Modifier and Type	Method	Description
final @NotNull DATA_TYPE[]	convertResult(@NotNull Object result)
final @NotNull ChunkType	getChunkType()
final @NotNull ObjectChunk<DATA_TYPE,ATTR>	getDictionaryChunk()
final @NotNull ToPage<DictionaryKeys,long[]>	getDictionaryKeysToPage()
final @NotNull Class<DATA_TYPE>	getNativeType()
final @NotNull Object	getResult(@NotNull ColumnPageReader columnPageReader, @NotNull SeekableChannelContext channelContext)
final LongBitmapStringSet.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 io.deephaven.parquet.table.pagestore.topage.ToPage

getNativeComponentType, makeVector, nullValue, toPage

Method Details

getNativeType

@NotNull
public final @NotNull Class<DATA_TYPE> getNativeType()

Specified by:

getNativeType in interface ToPage<DATA_TYPE,ATTR extends Any>

Returns:

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

getChunkType

@NotNull
public final @NotNull ChunkType getChunkType()

Specified by:

getChunkType in interface ToPage<DATA_TYPE,ATTR extends Any>

Returns:

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

getResult

@NotNull
public final @NotNull Object getResult(@NotNull
 @NotNull ColumnPageReader columnPageReader,
 @NotNull
 @NotNull SeekableChannelContext channelContext)
                                throws IOException

Specified by:

getResult in interface ToPage<DATA_TYPE,ATTR extends Any>

Returns:

Gets the result from the columnPageReader.

Throws:

IOException

convertResult

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

Specified by:

convertResult in interface ToPage<DATA_TYPE,ATTR extends Any>

Returns:

Produce the array of values from the result

getDictionaryChunk

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

Specified by:

getDictionaryChunk in interface ToPage<DATA_TYPE,ATTR extends Any>

Returns:

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

getReversibleLookup

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

Specified by:

getReversibleLookup in interface ToPage<DATA_TYPE,ATTR extends Any>

Returns:

an reverse lookup map of the dictionary.

getDictionaryKeysToPage

@NotNull
public final @NotNull ToPage<DictionaryKeys,long[]> getDictionaryKeysToPage()

Specified by:

getDictionaryKeysToPage in interface ToPage<DATA_TYPE,ATTR extends 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.