Package com.illumon.iris.db.v2.locations

Interface TableLocationState

All Known Subinterfaces:

DeephavenFormatTableLocation<CLT>, IWritableLocalTableLocation, ParquetFormatTableLocation<CLT>, TableLocation<CLT>

All Known Implementing Classes:

AbstractTableLocation, CheckpointRecord, DeferredTableLocation, DeferredTableLocation.DataDriven, DeferredTableLocation.SnapshotDriven, LocalTableLocation, ReadOnlyLocalTableLocation, ReadOnlyParquetTableLocation, TableLocationStateHolder, WritableLocalTableLocation

public interface TableLocationState

Interface for the mutable fields of a table location. Supports multi-value copy methods, so that applications needing a consistent view of all fields can work with a local copy while only locking this object for a short while.

Field Summary

Fields

Modifier and Type	Field	Description
static long	NULL_SIZE
static long	NULL_TIME

Method Summary

Modifier and Type	Method	Description
default boolean	copyStateValuesTo(TableLocationStateHolder destinationHolder)	Copy all state values from this to the supplied holder.
long	getLastModifiedTimeMillis()
long	getSize()
Object	getStateLock()
default void	writeStateValuesTo(DataOutput output)	Write all state values from this to the supplied output.

Field Details

NULL_SIZE

static final long NULL_SIZE

See Also:

Constant Field Values

NULL_TIME

static final long NULL_TIME

See Also:

Constant Field Values

Method Details

getStateLock

@NotNull Object getStateLock()

Returns:

The Object that accessors should synchronize on if they want to invoke multiple getters with consistent results.

getSize

long getSize()

Returns:

The size of a table location:
NULL_SIZE : Size information is unknown or does not exist for this table location
>= 0 : The table location exists and has (possibly empty) data

getLastModifiedTimeMillis

long getLastModifiedTimeMillis()

Returns:

The last modified time for a table location, in milliseconds from the epoch:
NULL_TIME : Modification time information is unknown or does not exist for this table location
>= 0L : The time this table was last modified, in milliseconds from the UTC epoch

copyStateValuesTo

@FinalDefault default boolean copyStateValuesTo(@NotNull TableLocationStateHolder destinationHolder)

Copy all state values from this to the supplied holder.

Parameters:

destinationHolder - The destination for output

Returns:

Whether any of destinationHolder's values changed

writeStateValuesTo

@FinalDefault default void writeStateValuesTo(@NotNull DataOutput output) throws IOException

Write all state values from this to the supplied output.

Parameters:

output - The output for output

Throws:

IOException