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

Class LongSingleValueSource

java.lang.Object
io.deephaven.engine.table.impl.AbstractColumnSource<T>
io.deephaven.engine.table.impl.sources.SingleValueColumnSource<Long>
io.deephaven.engine.table.impl.sources.LongSingleValueSource
All Implemented Interfaces:
ChunkSink<Values>, ChunkSource<Values>, ChunkSource.WithPrev<Values>, ColumnSource<Long>, ElementSource<Long>, FillContextMaker, GetContextMaker, ColumnSourceGetDefaults.ForLong, ColumnSourceGetDefaults.LongBacked<Long>, DefaultChunkSource<Values>, DefaultChunkSource.WithPrev<Values>, MutableColumnSource<Long>, MutableColumnSourceGetDefaults.ForLong, MutableColumnSourceGetDefaults.LongBacked<Long>, FillUnordered<Values>, InMemoryColumnSource, RowKeyAgnosticChunkSource<Values>, Releasable, TupleExporter<Long>, TupleSource<Long>, WritableColumnSource<Long>
public class LongSingleValueSource extends SingleValueColumnSource<Long> implements MutableColumnSourceGetDefaults.ForLong
Single value source for Long.

The C-haracterSingleValueSource is replicated to all other types with io.deephaven.engine.table.impl.sources.Replicate. (C-haracter is deliberately spelled that way in order to prevent Replicate from altering this very comment).

  • Constructor Details

    • LongSingleValueSource

      public LongSingleValueSource()

  • Method Details

    • set

      public final void set(Long value)
      Overrides:
      set in class SingleValueColumnSource<Long>

    • set

      public final void set(long value)
      Overrides:
      set in class SingleValueColumnSource<Long>

    • setNull

      public final void setNull()
      Overrides:
      setNull in class SingleValueColumnSource<Long>

    • set

      public final void set(long key, long value)
      Specified by:
      set in interface WritableColumnSource<Long>

    • getLong

      public final long getLong(long rowKey)
      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<Long>
      Parameters:
      rowKey - the location in key space to get the value from.
      Returns:
      the long at the rowKey, null values are represented by QueryConstants.NULL_LONG

    • getPrevLong

      public final long getPrevLong(long rowKey)
      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<Long>
      Parameters:
      rowKey - 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

    • fillFromChunk

      public final void fillFromChunk(@NotNull @NotNull ChunkSink.FillFromContext context, @NotNull @NotNull Chunk<? extends Values> src, @NotNull @NotNull RowSequence rowSequence)
      Description copied from interface: WritableColumnSource
      Our default, inefficient, implementation. Inheritors who care should provide a better implementation.
      Specified by:
      fillFromChunk in interface ChunkSink<Values>
      Specified by:
      fillFromChunk in interface WritableColumnSource<Long>
      Parameters:
      context - A context containing all mutable/state related data used in writing the Chunk.
      src - The source of the data rowSequence
      rowSequence - An RowSequence representing the keys to be written

    • fillFromChunkUnordered

      public void fillFromChunkUnordered(@NotNull @NotNull ChunkSink.FillFromContext context, @NotNull @NotNull Chunk<? extends Values> src, @NotNull @NotNull LongChunk<RowKeys> keys)
      Description copied from interface: ChunkSink
      Fills the ChunkSink with data from the source, with data corresponding to the keys from the given key chunk.
      Specified by:
      fillFromChunkUnordered in interface ChunkSink<Values>
      Specified by:
      fillFromChunkUnordered in interface WritableColumnSource<Long>
      Parameters:
      context - A context containing all mutable/state related data used in writing the Chunk.
      src - The source of the data RowSequence
      keys - A LongChunk representing the keys to be written

    • fillChunk

      public void fillChunk(@NotNull @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<Values>
      Overrides:
      fillChunk in class AbstractColumnSource<Long>
      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 @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<Values>
      Overrides:
      fillPrevChunk in class AbstractColumnSource<Long>
      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

    • fillChunkUnordered

      public void fillChunkUnordered(@NotNull @NotNull ChunkSource.FillContext context, @NotNull @NotNull WritableChunk<? super Values> dest, @NotNull @NotNull LongChunk<? extends RowKeys> keys)
      Description copied from interface: FillUnordered
      Populates a contiguous portion of the given destination chunk with data corresponding to the keys from the given LongChunk.

      It behaves as if the following code were executed: 

       destination.setSize(keys.size());
 for (int ii = 0; ii < keys.size(); ++ii) {
     destination.set(ii, get(keys.get(ii)));
 }
      Specified by:
      fillChunkUnordered in interface FillUnordered<Values>
      Parameters:
      context - A context containing all mutable/state related data used in retrieving the Chunk.
      dest - The chunk to be populated according to keys
      keys - A chunk of individual, not assumed to be ordered keys to be fetched

    • fillPrevChunkUnordered

      public void fillPrevChunkUnordered(@NotNull @NotNull ChunkSource.FillContext context, @NotNull @NotNull WritableChunk<? super Values> dest, @NotNull @NotNull LongChunk<? extends RowKeys> keys)
      Description copied from interface: FillUnordered
      Populates a contiguous portion of the given destination chunk with prev data corresponding to the keys from the given LongChunk.

      It behaves as if the following code were executed: 

       destination.setSize(keys.size());
 for (int ii = 0; ii < keys.size(); ++ii) {
     destination.set(ii, getPrev(keys.get(ii)));
 }
      Specified by:
      fillPrevChunkUnordered in interface FillUnordered<Values>
      Parameters:
      context - A context containing all mutable/state related data used in retrieving the Chunk.
      dest - The chunk to be populated according to keys
      keys - A chunk of individual, not assumed to be ordered keys to be fetched

    • providesFillUnordered

      public boolean providesFillUnordered()
      Description copied from interface: FillUnordered
      Returns true if this column source can efficiently provide an unordered fill. If this method returns false, then fillChunkUnordered and fillPrevChunkUnordered may throw an UnsupportedOperationException.
      Specified by:
      providesFillUnordered in interface FillUnordered<Values>
      Returns:
      if this column source can provide an unordered fill