Package com.illumon.iris.db.v2.by

Class HashTableColumnSource<DATA_TYPE>

java.lang.Object
com.illumon.iris.db.v2.sources.AbstractColumnSource<DATA_TYPE>
com.illumon.iris.db.v2.by.HashTableColumnSource<DATA_TYPE>
All Implemented Interfaces:
ChunkSource<Attributes.Values>, ChunkSource.WithPrev<Attributes.Values>, DefaultChunkSource<Attributes.Values>, DefaultChunkSource.WithPrev<Attributes.Values>, FillContextMaker, GetContextMaker, ColumnSource<DATA_TYPE>, ElementSource<DATA_TYPE>, Releasable, TupleExporter<DATA_TYPE>, TupleSource<DATA_TYPE>, Serializable
public class HashTableColumnSource<DATA_TYPE> extends AbstractColumnSource<DATA_TYPE> implements ColumnSource<DATA_TYPE>
ColumnSource implementation that delegates to the main and overflow sources for a hash table column.
See Also:

  • Field Details

    • MINIMUM_OVERFLOW_HASH_SLOT

      public static final int MINIMUM_OVERFLOW_HASH_SLOT
      See Also:

  • Constructor Details

  • Method Details

    • makeFillContext

      public final ChunkSource.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<DATA_TYPE>
      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

    • makeGetContext

      public final ChunkSource.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<DATA_TYPE>
      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

    • fillChunk

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

    • fillPrevChunk

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

    • getChunk

      public final Chunk<? extends Attributes.Values> getChunk(@NotNull ChunkSource.GetContext context, @NotNull OrderedKeys orderedKeys)
      Description copied from interface: ChunkSource
      Returns a chunk of data corresponding to the keys from the given OrderedKeys.
      Specified by:
      getChunk in interface ChunkSource<DATA_TYPE>
      Specified by:
      getChunk in interface DefaultChunkSource<DATA_TYPE>
      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
      orderedKeys - An OrderedKeys representing the keys to be fetched
      Returns:
      A chunk of data corresponding to the keys from the given OrderedKeys

    • getPrevChunk

      public final Chunk<? extends Attributes.Values> getPrevChunk(@NotNull ChunkSource.GetContext context, @NotNull OrderedKeys orderedKeys)
      Description copied from interface: ChunkSource.WithPrev
      Returns a chunk of previous data corresponding to the keys from the given OrderedKeys.
      Specified by:
      getPrevChunk in interface ChunkSource.WithPrev<DATA_TYPE>
      Specified by:
      getPrevChunk in interface DefaultChunkSource.WithPrev<DATA_TYPE>
      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
      orderedKeys - An OrderedKeys representing the keys to be fetched
      Returns:
      A chunk of data corresponding to the keys from the given OrderedKeys.

    • get

      public final DATA_TYPE get(long index)
      Description copied from interface: ElementSource
      Get the value from the source. This may return boxed values for basic types.
      Specified by:
      get in interface ElementSource<DATA_TYPE>
      Parameters:
      index - the location in index space to get the value from.
      Returns:
      the value at the index, potentially null.

    • getBoolean

      public final Boolean getBoolean(long index)
      Description copied from interface: ElementSource
      Get the value at the index as a Boolean.
      Specified by:
      getBoolean in interface ElementSource<DATA_TYPE>
      Parameters:
      index - the location in index space to get the value from.
      Returns:
      the boolean at the index, potentially null.

    • getByte

      public final byte getByte(long index)
      Description copied from interface: ElementSource
      Get the value at the index as a byte.
      Specified by:
      getByte in interface ElementSource<DATA_TYPE>
      Parameters:
      index - the location in index space to get the value from.
      Returns:
      the boolean at the index, null values are represented by QueryConstants.NULL_BYTE

    • getChar

      public final char getChar(long index)
      Description copied from interface: ElementSource
      Get the value at the index as a char.
      Specified by:
      getChar in interface ElementSource<DATA_TYPE>
      Parameters:
      index - the location in index space to get the value from.
      Returns:
      the char at the index, null values are represented by QueryConstants.NULL_CHAR

    • getDouble

      public final double getDouble(long index)
      Description copied from interface: ElementSource
      Get the value at the index as a double.
      Specified by:
      getDouble in interface ElementSource<DATA_TYPE>
      Parameters:
      index - the location in index space to get the value from.
      Returns:
      the double at the index, null values are represented by QueryConstants.NULL_DOUBLE

    • getFloat

      public final float getFloat(long index)
      Description copied from interface: ElementSource
      Get the value at the index as a float.
      Specified by:
      getFloat in interface ElementSource<DATA_TYPE>
      Parameters:
      index - the location in index space to get the value from.
      Returns:
      the float at the index, null values are represented by QueryConstants.NULL_FLOAT

    • getInt

      public final int getInt(long index)
      Description copied from interface: ElementSource
      Get the value at the index as an int.
      Specified by:
      getInt in interface ElementSource<DATA_TYPE>
      Parameters:
      index - the location in index space to get the value from.
      Returns:
      the int at the index, null values are represented by QueryConstants.NULL_INT

    • getLong

      public final long getLong(long index)
      Description copied from interface: ElementSource
      Get the value at the index as a long.
      Specified by:
      getLong in interface ElementSource<DATA_TYPE>
      Parameters:
      index - the location in index space to get the value from.
      Returns:
      the long at the index, null values are represented by QueryConstants.NULL_LONG

    • getShort

      public final short getShort(long index)
      Description copied from interface: ElementSource
      Get the value at the index as a short.
      Specified by:
      getShort in interface ElementSource<DATA_TYPE>
      Parameters:
      index - the location in index space to get the value from.
      Returns:
      the short at the index, null values are represented by QueryConstants.NULL_SHORT

    • getPrev

      public final DATA_TYPE getPrev(long index)
      Description copied from interface: ElementSource
      Get the previous value at the index. Previous values are used during an LTM update cycle to process changes in data. During normal operation previous values will be identical to current values.
      Specified by:
      getPrev in interface ElementSource<DATA_TYPE>
      Parameters:
      index - the location in index space to get the value from.
      Returns:
      the previous value at the index, or null.

    • getPrevBoolean

      public final Boolean getPrevBoolean(long index)
      Description copied from interface: ElementSource
      Get the previous value at the index as a Boolean. See ElementSource.getPrev(long) for more details.
      Specified by:
      getPrevBoolean in interface ElementSource<DATA_TYPE>
      Parameters:
      index - the location in index space to get the previous value from.
      Returns:
      the previous boolean at the index, or null.

    • getPrevByte

      public final byte getPrevByte(long index)
      Description copied from interface: ElementSource
      Get the previous value at the index as a byte. See ElementSource.getPrev(long) for more details.
      Specified by:
      getPrevByte in interface ElementSource<DATA_TYPE>
      Parameters:
      index - the location in index space to get the previous value from.
      Returns:
      the previous boolean at the index, null values are represented by QueryConstants.NULL_BYTE

    • getPrevChar

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

    • getPrevDouble

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

    • getPrevFloat

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

    • getPrevInt

      public final int getPrevInt(long index)
      Description copied from interface: ElementSource
      Get the previous value at the index as an int. See ElementSource.getPrev(long) for more details.
      Specified by:
      getPrevInt in interface ElementSource<DATA_TYPE>
      Parameters:
      index - the location in index space to get the previous value from.
      Returns:
      the previous int at the index, null values are represented by QueryConstants.NULL_INT

    • getPrevLong

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

    • getPrevShort

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

    • startTrackingPrevValues

      public final void startTrackingPrevValues()
      Description copied from interface: ColumnSource
      ColumnSource implementations that track previous values have the option to not actually start tracking previous values until this method is called. This is an option, not an obligation: some simple ColumnSource implementations (like TSingleValueSource for various T) always track previous values; other implementations (like PrevColumnSource) never do; some (like TArrayColumnSource) only start tracking once this method is called. An immutable column source can not have distinct prev values; therefore it is implemented as a no-op.
      Specified by:
      startTrackingPrevValues in interface ColumnSource<DATA_TYPE>

    • isImmutable

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

    • allowsReinterpret

      public <ALTERNATE_DATA_TYPE> boolean allowsReinterpret(@NotNull Class<ALTERNATE_DATA_TYPE> alternateDataType)
      Description copied from interface: ColumnSource
      Test if a reinterpret call will succeed.
      Specified by:
      allowsReinterpret in interface ColumnSource<DATA_TYPE>
      Overrides:
      allowsReinterpret in class AbstractColumnSource<DATA_TYPE>
      Type Parameters:
      ALTERNATE_DATA_TYPE - the dataType to inquire about
      Parameters:
      alternateDataType - The alternative type to consider
      Returns:
      If a reinterpret on this column source with the supplied alternateDataType will succeed.

    • doReinterpret

      protected <ALTERNATE_DATA_TYPE> ColumnSource<ALTERNATE_DATA_TYPE> doReinterpret(@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<DATA_TYPE>
      Type Parameters:
      ALTERNATE_DATA_TYPE - the dataType to reinterpret to
      Parameters:
      alternateDataType - The alternate data type
      Returns:
      The resulting ColumnSource

    • isOverflowLocation

      public static boolean isOverflowLocation(long index)

    • hashLocationToOverflowLocation

      public static int hashLocationToOverflowLocation(int hashSlot)

    • overflowLocationToHashLocation

      public static int overflowLocationToHashLocation(int overflowSlot)