Package io.deephaven.engine.table.impl

Class UnboxedLongBackedColumnSource<T>

java.lang.Object
io.deephaven.engine.table.impl.AbstractColumnSource<Long>
io.deephaven.engine.table.impl.UnboxedLongBackedColumnSource<T>
All Implemented Interfaces:
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>, Releasable, TupleExporter<Long>, TupleSource<Long>
public class UnboxedLongBackedColumnSource<T> extends AbstractColumnSource<Long> implements MutableColumnSourceGetDefaults.ForLong
Reinterpret result for many ColumnSource implementations that internally represent time values, such as Instant, as long values.

  • Constructor Details

    • UnboxedLongBackedColumnSource

      public UnboxedLongBackedColumnSource(ColumnSource<T> alternateColumnSource)

  • Method Details

    • getLong

      public 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<T>
      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 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<T>
      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

    • 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>
      Specified by:
      isImmutable in interface MutableColumnSource<T>
      Returns:
      true if the values at a given row key of the column source never change, false otherwise

    • allowsReinterpret

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

    • doReinterpret

      public <ALTERNATE_DATA_TYPE> ColumnSource<ALTERNATE_DATA_TYPE> doReinterpret(@NotNull @NotNull Class<ALTERNATE_DATA_TYPE> alternateDataType) throws IllegalArgumentException
      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<Long>
      Parameters:
      alternateDataType - The alternate data type
      Returns:
      The resulting ColumnSource
      Throws:
      IllegalArgumentException

    • isStateless

      public boolean isStateless()
      Description copied from interface: ColumnSource
      Most column sources will return the same value for a given row without respect to the order that the rows are read. Those columns sources are considered "stateless" and should return true. Some column sources, however may be dependent on evaluation order. For example, a formula that updates a Map must be evaluated from the first row to the last row. A column source that has the potential to depend on the order of evaluation must return false.
      Specified by:
      isStateless in interface ColumnSource<T>
      Returns:
      true if this is a stateless column source