Package io.deephaven.engine.table.impl.sources

Class ShiftedColumnSource<T>

java.lang.Object
io.deephaven.engine.table.impl.AbstractColumnSource<T>
io.deephaven.engine.table.impl.sources.ShiftedColumnSource<T>
Type Parameters:
T -
All Implemented Interfaces:
ChunkSource<Values>, ChunkSource.WithPrev<Values>, ColumnSource<T>, ElementSource<T>, FillContextMaker, GetContextMaker, DefaultChunkSource<Values>, DefaultChunkSource.WithPrev<Values>, ConvertibleTimeSource, InMemoryColumnSource, UngroupableColumnSource, Releasable, TupleExporter<T>, TupleSource<T>
public class ShiftedColumnSource<T> extends AbstractColumnSource<T> implements UngroupableColumnSource, ConvertibleTimeSource, InMemoryColumnSource
A ColumnSource that provides internal shifted redirectionIndex logic to access into an underlying wrapped ColumnSource. This is used, in a ShiftedColumnOperation.

  • Field Details

    • innerSource

      protected final ColumnSource<T> innerSource

    • rowSet

      protected final TrackingRowSet rowSet

    • shift

      protected final long shift

  • Constructor Details

    • ShiftedColumnSource

      public ShiftedColumnSource(@NotNull @NotNull TrackingRowSet rowSet, @NotNull @NotNull ColumnSource<T> innerSource, long shift)

  • Method Details

    • isInMemory

      public boolean isInMemory()
      Specified by:
      isInMemory in interface InMemoryColumnSource
      Returns:
      true if this column source is entirely in memory.

    • buildRedirectedKeys

      @NotNull public @NotNull RowSet buildRedirectedKeys(boolean usePrev, @NotNull @NotNull RowSequence toRedirect, @NotNull @NotNull org.apache.commons.lang3.mutable.MutableInt nullAtBeginningOrEnd)
      Returns the appropriate Redirected Index for the passed in ordered keys based on current or prev Index.
      Parameters:
      usePrev - indicates if redirection is needed in pre-shift or post-shift space
      toRedirect - keys to Redirect
      nullAtBeginningOrEnd - holds the calculated count of null at beginning or end when processing is complete
      Returns:
      returns the appropriate Redirected Index for the passed in ordered keys

    • isImmutable

      public boolean isImmutable()
      Description copied from interface: ColumnSource
      Determine if this column source is immutable, meaning that the values at a given row key never change.
      Specified by:
      isImmutable in interface ColumnSource<T>
      Returns:
      true if the values at a given row key of the column source never change, false otherwise

    • get

      @Nullable public T get(long index)
      Description copied from interface: ElementSource
      Get the value from the source. This may return boxed values for basic types. RowKeys that are not present are undefined.
      Specified by:
      get in interface ElementSource<T>
      Parameters:
      index - the location in key space to get the value from.
      Returns:
      the value at the rowKey, potentially null.

    • getBoolean

      @Nullable public @Nullable Boolean getBoolean(long index)
      Description copied from interface: ElementSource
      Get the value at the rowKey as a Boolean. RowKeys that are not present are undefined.
      Specified by:
      getBoolean in interface ElementSource<T>
      Parameters:
      index - the location in key space to get the value from.
      Returns:
      the boolean at the rowKey, potentially null.

    • getByte

      public byte getByte(long index)
      Description copied from interface: ElementSource
      Get the value at the rowKey as a byte. RowKeys that are not present are undefined.
      Specified by:
      getByte in interface ElementSource<T>
      Parameters:
      index - the location in key space to get the value from.
      Returns:
      the boolean at the rowKey, null values are represented by QueryConstants.NULL_BYTE

    • getChar

      public char getChar(long index)
      Description copied from interface: ElementSource
      Get the value at the rowKey as a char. RowKeys that are not present are undefined.
      Specified by:
      getChar in interface ElementSource<T>
      Parameters:
      index - the location in key space to get the value from.
      Returns:
      the char at the rowKey, null values are represented by QueryConstants.NULL_CHAR

    • getDouble

      public double getDouble(long index)
      Description copied from interface: ElementSource
      Get the value at the rowKey as a double. RowKeys that are not present are undefined.
      Specified by:
      getDouble in interface ElementSource<T>
      Parameters:
      index - the location in key space to get the value from.
      Returns:
      the double at the rowKey, null values are represented by QueryConstants.NULL_DOUBLE

    • getFloat

      public float getFloat(long index)
      Description copied from interface: ElementSource
      Get the value at the rowKey as a float. RowKeys that are not present are undefined.
      Specified by:
      getFloat in interface ElementSource<T>
      Parameters:
      index - the location in key space to get the value from.
      Returns:
      the float at the rowKey, null values are represented by QueryConstants.NULL_FLOAT

    • getInt

      public int getInt(long index)
      Description copied from interface: ElementSource
      Get the value at the rowKey as an int. RowKeys that are not present are undefined.
      Specified by:
      getInt in interface ElementSource<T>
      Parameters:
      index - the location in key space to get the value from.
      Returns:
      the int at the rowKey, null values are represented by QueryConstants.NULL_INT

    • getLong

      public long getLong(long index)
      Description copied from interface: ElementSource
      Get the value at the rowKey as a long. RowKeys that are not present are undefined.
      Specified by:
      getLong in interface ElementSource<T>
      Parameters:
      index - the location in key space to get the value from.
      Returns:
      the long at the rowKey, null values are represented by QueryConstants.NULL_LONG

    • getShort

      public short getShort(long index)
      Description copied from interface: ElementSource
      Get the value at the rowKey as a short. RowKeys that are not present are undefined.
      Specified by:
      getShort in interface ElementSource<T>
      Parameters:
      index - the location in key space to get the value from.
      Returns:
      the short at the rowKey, null values are represented by QueryConstants.NULL_SHORT

    • getPrev

      @Nullable public T getPrev(long index)
      Description copied from interface: ElementSource
      Get the previous value at the rowKey. Previous values are used during an UG update cycle to process changes in data. During normal operation previous values will be identical to current values. RowKeys that were not present are undefined.
      Specified by:
      getPrev in interface ElementSource<T>
      Parameters:
      index - the location in key space to get the value from.
      Returns:
      the previous value at the rowKey, potentially null.

    • getPrevBoolean

      @Nullable public @Nullable Boolean getPrevBoolean(long index)
      Description copied from interface: ElementSource
      Get the previous value at the rowKey as a Boolean. See ElementSource.getPrev(long) for more details. RowKeys that were not present are undefined.
      Specified by:
      getPrevBoolean in interface ElementSource<T>
      Parameters:
      index - the location in key space to get the previous value from.
      Returns:
      the previous boolean at the rowKey, potentially null.

    • getPrevByte

      public byte getPrevByte(long index)
      Description copied from interface: ElementSource
      Get the previous value at the rowKey as a byte. See ElementSource.getPrev(long) for more details. RowKeys that were not present are undefined.
      Specified by:
      getPrevByte in interface ElementSource<T>
      Parameters:
      index - the location in key space to get the previous value from.
      Returns:
      the previous boolean at the rowKey, null values are represented by QueryConstants.NULL_BYTE

    • getPrevChar

      public char getPrevChar(long index)
      Description copied from interface: ElementSource
      Get the previous value at the rowKey as a char. See ElementSource.getPrev(long) for more details. RowKeys that were not present are undefined.
      Specified by:
      getPrevChar in interface ElementSource<T>
      Parameters:
      index - ohe location in key space to get the previous value from.
      Returns:
      the previous char at the rowKey, null values are represented by QueryConstants.NULL_CHAR

    • getPrevDouble

      public double getPrevDouble(long index)
      Description copied from interface: ElementSource
      Get the previous value at the rowKey as a double. See ElementSource.getPrev(long) for more details. RowKeys that were not present are undefined.
      Specified by:
      getPrevDouble in interface ElementSource<T>
      Parameters:
      index - the location in key space to get the previous value from.
      Returns:
      the previous double at the rowKey, null values are represented by QueryConstants.NULL_DOUBLE

    • getPrevFloat

      public float getPrevFloat(long index)
      Description copied from interface: ElementSource
      Get the previous value at the rowKey as a float. See ElementSource.getPrev(long) for more details. RowKeys that were not present are undefined.
      Specified by:
      getPrevFloat in interface ElementSource<T>
      Parameters:
      index - the location in key space to get the previous value from.
      Returns:
      the previous float at the rowKey, null values are represented by QueryConstants.NULL_FLOAT

    • getPrevInt

      public int getPrevInt(long index)
      Description copied from interface: ElementSource
      Get the previous value at the rowKey as an int. See ElementSource.getPrev(long) for more details. RowKeys that were not present are undefined.
      Specified by:
      getPrevInt in interface ElementSource<T>
      Parameters:
      index - the location in key space to get the previous value from.
      Returns:
      the previous int at the rowKey, null values are represented by QueryConstants.NULL_INT

    • getPrevLong

      public long getPrevLong(long index)
      Description copied from interface: ElementSource
      Get the previous value at the rowKey as a long. See ElementSource.getPrev(long) for more details.
      Specified by:
      getPrevLong in interface ElementSource<T>
      Parameters:
      index - the location in key space to get the previous value from.
      Returns:
      the previous long at the rowKey, null values are represented by QueryConstants.NULL_LONG

    • getPrevShort

      public short getPrevShort(long index)
      Description copied from interface: ElementSource
      Get the previous value at the rowKey as a short. See ElementSource.getPrev(long) for more details. RowKeys that were not present are undefined.
      Specified by:
      getPrevShort in interface ElementSource<T>
      Parameters:
      index - the location in key space to get the previous value from.
      Returns:
      the previous short at the rowKey, null values are represented by QueryConstants.NULL_SHORT

    • isUngroupable

      public boolean isUngroupable()
      Description copied from interface: UngroupableColumnSource
      Does this particular ColumnSource support ungrouping?
      Specified by:
      isUngroupable in interface UngroupableColumnSource
      Returns:
      true if you can call the getUngrouped family of methods and get a valid answer

    • getUngroupedSize

      public long getUngroupedSize(long groupRowKey)
      Specified by:
      getUngroupedSize in interface UngroupableColumnSource

    • getUngroupedPrevSize

      public long getUngroupedPrevSize(long groupRowKey)
      Specified by:
      getUngroupedPrevSize in interface UngroupableColumnSource

    • getUngrouped

      public T getUngrouped(long groupRowKey, int offsetInGroup)
      Description copied from interface: UngroupableColumnSource
      Reach into a grouped column source and pull one Object element out of the vector.
      Specified by:
      getUngrouped in interface UngroupableColumnSource
      Parameters:
      groupRowKey - The vector's row key in the grouped column source
      offsetInGroup - Positional offset within the vector at groupRowKey
      Returns:
      Equivalent to ((ObjectVector)columnSource.get(groupRowKey)).get(offsetInGroup)

    • getUngroupedPrev

      public T getUngroupedPrev(long groupRowKey, int offsetInGroup)
      Description copied from interface: UngroupableColumnSource
      Reach into a grouped column source and pull one Object element out of the vector as of end of the previous update cycle.
      Specified by:
      getUngroupedPrev in interface UngroupableColumnSource
      Parameters:
      groupRowKey - The vector's row key in the grouped column source
      offsetInGroup - Positional offset within the vector at groupRowKey
      Returns:
      Equivalent to ((ObjectVector)columnSource.getPrev(groupRowKey)).get(offsetInGroup)

    • getUngroupedBoolean

      public Boolean getUngroupedBoolean(long groupRowKey, int offsetInGroup)
      Description copied from interface: UngroupableColumnSource
      Reach into a grouped column source and pull one Boolean element out of the vector.
      Specified by:
      getUngroupedBoolean in interface UngroupableColumnSource
      Parameters:
      groupRowKey - The vector's row key in the grouped column source
      offsetInGroup - Positional offset within the vector at groupRowKey
      Returns:
      Equivalent to ((ObjectVector)columnSource.get(groupRowKey)).get(offsetInGroup)

    • getUngroupedPrevBoolean

      public Boolean getUngroupedPrevBoolean(long groupRowKey, int offsetInGroup)
      Description copied from interface: UngroupableColumnSource
      Reach into a grouped column source and pull one Boolean element out of the vector as of end of the previous update cycle.
      Specified by:
      getUngroupedPrevBoolean in interface UngroupableColumnSource
      Parameters:
      groupRowKey - The vector's row key in the grouped column source
      offsetInGroup - Positional offset within the vector at groupRowKey
      Returns:
      Equivalent to ((ObjectVector)columnSource.getPrev(groupRowKey)).get(offsetInGroup)

    • getUngroupedDouble

      public double getUngroupedDouble(long groupRowKey, int offsetInGroup)
      Description copied from interface: UngroupableColumnSource
      Reach into a grouped column source and pull one double element out of the vector.
      Specified by:
      getUngroupedDouble in interface UngroupableColumnSource
      Parameters:
      groupRowKey - The vector's row key in the grouped column source
      offsetInGroup - Positional offset within the vector at groupRowKey
      Returns:
      Equivalent to ((DoubleVector)columnSource.get(groupRowKey)).get(offsetInGroup)

    • getUngroupedPrevDouble

      public double getUngroupedPrevDouble(long groupRowKey, int offsetInGroup)
      Description copied from interface: UngroupableColumnSource
      Reach into a grouped column source and pull one double element out of the vector as of end of the previous update cycle.
      Specified by:
      getUngroupedPrevDouble in interface UngroupableColumnSource
      Parameters:
      groupRowKey - The vector's row key in the grouped column source
      offsetInGroup - Positional offset within the vector at groupRowKey
      Returns:
      Equivalent to ((DoubleVector)columnSource.getPrev(groupRowKey)).get(offsetInGroup)

    • getUngroupedFloat

      public float getUngroupedFloat(long groupRowKey, int offsetInGroup)
      Description copied from interface: UngroupableColumnSource
      Reach into a grouped column source and pull one float element out of the vector.
      Specified by:
      getUngroupedFloat in interface UngroupableColumnSource
      Parameters:
      groupRowKey - The vector's row key in the grouped column source
      offsetInGroup - Positional offset within the vector at groupRowKey
      Returns:
      Equivalent to ((FloatVector)columnSource.get(groupRowKey)).get(offsetInGroup)

    • getUngroupedPrevFloat

      public float getUngroupedPrevFloat(long groupRowKey, int offsetInGroup)
      Description copied from interface: UngroupableColumnSource
      Reach into a grouped column source and pull one float element out of the vector as of end of the previous update cycle.
      Specified by:
      getUngroupedPrevFloat in interface UngroupableColumnSource
      Parameters:
      groupRowKey - The vector's row key in the grouped column source
      offsetInGroup - Positional offset within the vector at groupRowKey
      Returns:
      Equivalent to ((FloatVector)columnSource.getPrev(groupRowKey)).get(offsetInGroup)

    • getUngroupedByte

      public byte getUngroupedByte(long groupRowKey, int offsetInGroup)
      Description copied from interface: UngroupableColumnSource
      Reach into a grouped column source and pull one byte element out of the vector.
      Specified by:
      getUngroupedByte in interface UngroupableColumnSource
      Parameters:
      groupRowKey - The vector's row key in the grouped column source
      offsetInGroup - Positional offset within the vector at groupRowKey
      Returns:
      Equivalent to ((ByteVector)columnSource.get(groupRowKey)).get(offsetInGroup)

    • getUngroupedPrevByte

      public byte getUngroupedPrevByte(long groupRowKey, int offsetInGroup)
      Description copied from interface: UngroupableColumnSource
      Reach into a grouped column source and pull one byte element out of the vector as of end of the previous update cycle.
      Specified by:
      getUngroupedPrevByte in interface UngroupableColumnSource
      Parameters:
      groupRowKey - The vector's row key in the grouped column source
      offsetInGroup - Positional offset within the vector at groupRowKey
      Returns:
      Equivalent to ((ByteVector)columnSource.getPrev(groupRowKey)).get(offsetInGroup)

    • getUngroupedChar

      public char getUngroupedChar(long groupRowKey, int offsetInGroup)
      Description copied from interface: UngroupableColumnSource
      Reach into a grouped column source and pull one char element out of the vector.
      Specified by:
      getUngroupedChar in interface UngroupableColumnSource
      Parameters:
      groupRowKey - The vector's row key in the grouped column source
      offsetInGroup - Positional offset within the vector at groupRowKey
      Returns:
      Equivalent to ((CharVector)columnSource.get(groupRowKey)).get(offsetInGroup)

    • getUngroupedPrevChar

      public char getUngroupedPrevChar(long groupRowKey, int offsetInGroup)
      Description copied from interface: UngroupableColumnSource
      Reach into a grouped column source and pull one char element out of the vector as of end of the previous update cycle.
      Specified by:
      getUngroupedPrevChar in interface UngroupableColumnSource
      Parameters:
      groupRowKey - The vector's row key in the grouped column source
      offsetInGroup - Positional offset within the vector at groupRowKey
      Returns:
      Equivalent to ((CharVector)columnSource.getPrev(groupRowKey)).get(offsetInGroup)

    • getUngroupedShort

      public short getUngroupedShort(long groupRowKey, int offsetInGroup)
      Description copied from interface: UngroupableColumnSource
      Reach into a grouped column source and pull one short element out of the vector.
      Specified by:
      getUngroupedShort in interface UngroupableColumnSource
      Parameters:
      groupRowKey - The vector's row key in the grouped column source
      offsetInGroup - Positional offset within the vector at groupRowKey
      Returns:
      Equivalent to ((ShortVector)columnSource.get(groupRowKey)).get(offsetInGroup)

    • getUngroupedPrevShort

      public short getUngroupedPrevShort(long groupRowKey, int offsetInGroup)
      Description copied from interface: UngroupableColumnSource
      Reach into a grouped column source and pull one short element out of the vector as of end of the previous update cycle.
      Specified by:
      getUngroupedPrevShort in interface UngroupableColumnSource
      Parameters:
      groupRowKey - The vector's row key in the grouped column source
      offsetInGroup - Positional offset within the vector at groupRowKey
      Returns:
      Equivalent to ((ShortVector)columnSource.getPrev(groupRowKey)).get(offsetInGroup)

    • getUngroupedInt

      public int getUngroupedInt(long groupRowKey, int offsetInGroup)
      Description copied from interface: UngroupableColumnSource
      Reach into a grouped column source and pull one int element out of the vector.
      Specified by:
      getUngroupedInt in interface UngroupableColumnSource
      Parameters:
      groupRowKey - The vector's row key in the grouped column source
      offsetInGroup - Positional offset within the vector at groupRowKey
      Returns:
      Equivalent to ((IntVector)columnSource.get(groupRowKey)).get(offsetInGroup)

    • getUngroupedPrevInt

      public int getUngroupedPrevInt(long groupRowKey, int offsetInGroup)
      Description copied from interface: UngroupableColumnSource
      Reach into a grouped column source and pull one int element out of the vector as of end of the previous update cycle.
      Specified by:
      getUngroupedPrevInt in interface UngroupableColumnSource
      Parameters:
      groupRowKey - The vector's row key in the grouped column source
      offsetInGroup - Positional offset within the vector at groupRowKey
      Returns:
      Equivalent to ((IntVector)columnSource.getPrev(groupRowKey)).get(offsetInGroup)

    • getUngroupedLong

      public long getUngroupedLong(long groupRowKey, int offsetInGroup)
      Description copied from interface: UngroupableColumnSource
      Reach into a grouped column source and pull one long element out of the vector.
      Specified by:
      getUngroupedLong in interface UngroupableColumnSource
      Parameters:
      groupRowKey - The vector's row key in the grouped column source
      offsetInGroup - Positional offset within the vector at groupRowKey
      Returns:
      Equivalent to ((LongVector)columnSource.getLong(groupRowKey)).get(offsetInGroup)

    • getUngroupedPrevLong

      public long getUngroupedPrevLong(long groupRowKey, int offsetInGroup)
      Description copied from interface: UngroupableColumnSource
      Reach into a grouped column source and pull one long element out of the vector as of end of the previous update cycle.
      Specified by:
      getUngroupedPrevLong in interface UngroupableColumnSource
      Parameters:
      groupRowKey - The vector's row key in the grouped column source
      offsetInGroup - Positional offset within the vector at groupRowKey
      Returns:
      Equivalent to ((LongVector)columnSource.getPrev(groupRowKey)).get(offsetInGroup)

    • releaseCachedResources

      public void releaseCachedResources()
      Description copied from interface: ColumnSource
      Release any resources held for caching purposes. Implementations need not guarantee that concurrent accesses are correct, as the purpose of this method is to ensure cleanup for column sources that will no longer be used.
      Specified by:
      releaseCachedResources in interface ColumnSource<T>
      Specified by:
      releaseCachedResources in interface Releasable

    • toZonedDateTime

      public ColumnSource<ZonedDateTime> toZonedDateTime(ZoneId zone)
      Description copied from interface: ConvertibleTimeSource
      Convert this source to a ZonedDateTime source at the specified zone.
      Specified by:
      toZonedDateTime in interface ConvertibleTimeSource
      Parameters:
      zone - the time zone
      Returns:
      a view of this source as a ZonedDateTime

    • toLocalDate

      public ColumnSource<LocalDate> toLocalDate(ZoneId zone)
      Description copied from interface: ConvertibleTimeSource
      Convert this source to a LocalDate source at the specified zone.
      Specified by:
      toLocalDate in interface ConvertibleTimeSource
      Parameters:
      zone - the time zone
      Returns:
      a view of this source as a LocalDate

    • toLocalTime

      public ColumnSource<LocalTime> toLocalTime(ZoneId zone)
      Description copied from interface: ConvertibleTimeSource
      Convert this source to a LocalTime source at the specified zone.
      Specified by:
      toLocalTime in interface ConvertibleTimeSource
      Parameters:
      zone - the time zone
      Returns:
      a view of this source as a LocalTime

    • toInstant

      public ColumnSource<Instant> toInstant()
      Description copied from interface: ConvertibleTimeSource
      Convert this source to an Instant source.
      Specified by:
      toInstant in interface ConvertibleTimeSource
      Returns:
      a view of this source asan Instant

    • toEpochNano

      public ColumnSource<Long> toEpochNano()
      Description copied from interface: ConvertibleTimeSource
      Convert this source to a long source of nanoseconds of epoch.
      Specified by:
      toEpochNano in interface ConvertibleTimeSource
      Returns:
      a view of this source as a ZonedDateTime

    • supportsTimeConversion

      public boolean supportsTimeConversion()
      Description copied from interface: ConvertibleTimeSource
      Check if this class supports time conversion. If false, all other methods will fail.
      Specified by:
      supportsTimeConversion in interface ConvertibleTimeSource
      Returns:
      true if time conversion is supported.

    • doReinterpret

      protected <ALTERNATE_DATA_TYPE> ColumnSource<ALTERNATE_DATA_TYPE> doReinterpret(@NotNull @NotNull Class<ALTERNATE_DATA_TYPE> alternateDataType)
      Description copied from class: AbstractColumnSource
      Supply allowed reinterpret results. The default implementation handles the most common case to avoid code duplication.
      Overrides:
      doReinterpret in class AbstractColumnSource<T>
      Parameters:
      alternateDataType - The alternate data type
      Returns:
      The resulting ColumnSource

    • makeFillContext

      public io.deephaven.engine.table.impl.sources.ShiftedColumnSource.FillContext makeFillContext(int chunkCapacity, SharedContext sharedContext)
      Description copied from interface: FillContextMaker
      Allocate a new ChunkSource.FillContext for filling chunks from this FillContextMaker, typically a ChunkSource.
      Specified by:
      makeFillContext in interface DefaultChunkSource<T>
      Specified by:
      makeFillContext in interface FillContextMaker
      Parameters:
      chunkCapacity - The maximum size of any WritableChunk that will be filled with this context
      sharedContext - Shared store of intermediate results.
      Returns:
      A context for use with fill operations

    • fillChunk

      public void fillChunk(@NotNull ChunkSource.FillContext context, @NotNull @NotNull WritableChunk<? super Values> destination, @NotNull @NotNull RowSequence rowSequence)
      Description copied from interface: ChunkSource
      Populates the given destination chunk with data corresponding to the keys from the given RowSequence.
      Specified by:
      fillChunk in interface ChunkSource<T>
      Overrides:
      fillChunk in class AbstractColumnSource<T>
      Parameters:
      context - A context containing all mutable/state related data used in retrieving the Chunk.
      destination - The chunk to be populated according to rowSequence. No assumptions shall be made about the size of the chunk shall be made. The chunk will be populated from position [0,rowSequence.size()).
      rowSequence - An RowSequence representing the keys to be fetched

    • fillPrevChunk

      public void fillPrevChunk(@NotNull ChunkSource.FillContext context, @NotNull @NotNull WritableChunk<? super Values> destination, @NotNull @NotNull RowSequence rowSequence)
      Description copied from interface: ChunkSource.WithPrev
      Populates the given destination chunk with data corresponding to the keys from the given RowSequence.
      Specified by:
      fillPrevChunk in interface ChunkSource.WithPrev<T>
      Overrides:
      fillPrevChunk in class AbstractColumnSource<T>
      Parameters:
      context - A context containing all mutable/state related data used in retrieving the Chunk.
      destination - The chunk to be populated according to rowSequence. No assumptions shall be made about the size of the chunk shall be made. The chunk will be populated from position [0,rowSequence.size()).
      rowSequence - An RowSequence representing the keys to be fetched

    • getChunk

      public Chunk<? extends Values> getChunk(@NotNull ChunkSource.GetContext context, @NotNull @NotNull RowSequence rowSequence)
      Description copied from interface: ChunkSource
      Returns a chunk of data corresponding to the keys from the given RowSequence.
      Specified by:
      getChunk in interface ChunkSource<T>
      Specified by:
      getChunk in interface DefaultChunkSource<T>
      Parameters:
      context - A context containing all mutable/state related data used in retrieving the Chunk. In particular, the Context may be used to provide a Chunk data pool
      rowSequence - An RowSequence representing the keys to be fetched
      Returns:
      A chunk of data corresponding to the keys from the given RowSequence

    • getPrevChunk

      public Chunk<? extends Values> getPrevChunk(@NotNull ChunkSource.GetContext context, @NotNull @NotNull RowSequence rowSequence)
      Description copied from interface: ChunkSource.WithPrev
      Returns a chunk of previous data corresponding to the keys from the given RowSequence.
      Specified by:
      getPrevChunk in interface ChunkSource.WithPrev<T>
      Specified by:
      getPrevChunk in interface DefaultChunkSource.WithPrev<T>
      Parameters:
      context - A context containing all mutable/state related data used in retrieving the Chunk. In particular, the Context may be used to provide a Chunk data pool
      rowSequence - An RowSequence representing the keys to be fetched
      Returns:
      A chunk of data corresponding to the keys from the given RowSequence

    • makeGetContext

      public ShiftedColumnSource<T>.io.deephaven.engine.table.impl.sources.ShiftedColumnSource.GetContext makeGetContext(int chunkCapacity, SharedContext sharedContext)
      Description copied from interface: GetContextMaker
      Allocate a new ChunkSource.GetContext for retrieving chunks from this GetContextMaker, typically a ChunkSource.
      Specified by:
      makeGetContext in interface DefaultChunkSource<T>
      Specified by:
      makeGetContext in interface GetContextMaker
      Parameters:
      chunkCapacity - The maximum size required for any WritableChunk allocated as part of the result.
      sharedContext - Shared store of intermediate results.
      Returns:
      A context for use with get operations