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

Interface ChunkedBackingStoreExposedWritableSource

All Known Implementing Classes:
ArrayBackedColumnSource, BooleanArraySource, ByteArraySource, CharacterArraySource, DoubleArraySource, FloatArraySource, Immutable2DByteArraySource, Immutable2DCharArraySource, Immutable2DDoubleArraySource, Immutable2DFloatArraySource, Immutable2DIntArraySource, Immutable2DLongArraySource, Immutable2DObjectArraySource, Immutable2DShortArraySource, ImmutableByteArraySource, ImmutableCharArraySource, ImmutableDoubleArraySource, ImmutableFloatArraySource, ImmutableIntArraySource, ImmutableLongArraySource, ImmutableObjectArraySource, ImmutableShortArraySource, IntegerArraySource, LongArraySource, ObjectArraySource, ShortArraySource
public interface ChunkedBackingStoreExposedWritableSource
Writable sources that use simple arrays to back contiguous regions may implement this interface, allowing callers to reach directly into their storage in order to fill them without the need for additional array copies.

  • Method Details

    • exposesChunkedBackingStore

      static boolean exposesChunkedBackingStore(ColumnSource<?> cs)
      Returns true if a given column source exposes a chunked backing store
      Parameters:
      cs - the column source to test
      Returns:
      true if the column source exposes a chunked backing store

    • exposesChunkedBackingStore

      default boolean exposesChunkedBackingStore()
      Does this column source provide a chunked exposed backing store?
      Returns:
      true if this column source provides a chunked backing store, false otherwise

    • resetWritableChunkToBackingStore

      long resetWritableChunkToBackingStore(@NotNull @NotNull ResettableWritableChunk<?> chunk, long position)
      Resets the given chunk to provide a write-through reference to our backing array.

      Note: This is unsafe to use if previous tracking has been enabled!

      Parameters:
      chunk - the writable chunk to reset to our backing array.
      position - position that we require
      Returns:
      the first position addressable by the chunk

    • resetWritableChunkToBackingStoreSlice

      long resetWritableChunkToBackingStoreSlice(@NotNull @NotNull ResettableWritableChunk<?> chunk, long position)
      Resets the given chunk to provide a write-through reference to our backing array.

      Note: This is unsafe to use if previous tracking has been enabled!

      Parameters:
      chunk - the writable chunk to reset to a slice of our backing array.
      position - position of the first value in the returned chunk
      Returns:
      the capacity of the returned chunk