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

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

java.lang.Object

io.deephaven.parquet.table.pagestore.topage.ToPage.Wrap<ATTR,INNER_RESULT,OUTER_RESULT>

All Implemented Interfaces:

ToPage<ATTR,OUTER_RESULT>

Direct Known Subclasses:

ToArrayPage, ToStringSetPage, ToVectorPage

Enclosing interface:

ToPage<ATTR extends Any,RESULT>

public abstract static class ToPage.Wrap<ATTR extends Any,INNER_RESULT,OUTER_RESULT>
extends Object
implements ToPage<ATTR,OUTER_RESULT>

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
abstract OUTER_RESULT	convertResult(Object object)
Chunk<ATTR>	getDictionaryChunk()
ToPage<DictionaryKeys,long[]>	getDictionaryKeysToPage()
@NotNull Object	getResult(ColumnPageReader columnPageReader)
LongBitmapStringSet.ReversibleLookup	getReversibleLookup()
Object	nullValue()

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

getChunkType, getNativeComponentType, getNativeType, makeVector, toPage

Method Details

nullValue

public Object nullValue()

Specified by:

nullValue in interface ToPage<ATTR extends Any,INNER_RESULT>

Returns:

The null value stored in the elements of the arrays produced by thus object.

getResult

@NotNull
public @NotNull Object getResult(ColumnPageReader columnPageReader)
                          throws IOException

Specified by:

getResult in interface ToPage<ATTR extends Any,INNER_RESULT>

Returns:

Gets the result from the columnPageReader.

Throws:

IOException

convertResult

public abstract OUTER_RESULT convertResult(Object object)

Specified by:

convertResult in interface ToPage<ATTR extends Any,INNER_RESULT>

Returns:

Produce the array of values from the result

getDictionaryChunk

public Chunk<ATTR> getDictionaryChunk()

Specified by:

getDictionaryChunk in interface ToPage<ATTR extends Any,INNER_RESULT>

Returns:

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

getDictionaryKeysToPage

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

Specified by:

getDictionaryKeysToPage in interface ToPage<ATTR extends Any,INNER_RESULT>

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.

getReversibleLookup

public LongBitmapStringSet.ReversibleLookup getReversibleLookup()

Specified by:

getReversibleLookup in interface ToPage<ATTR extends Any,INNER_RESULT>

Returns:

an reverse lookup map of the dictionary.