Package io.deephaven.parquet.table.layout

Class LocationTableBuilderCsv

java.lang.Object

io.deephaven.parquet.table.layout.LocationTableBuilderCsv

All Implemented Interfaces:

KeyValuePartitionLayout.LocationTableBuilder

public final class LocationTableBuilderCsv
extends Object
implements KeyValuePartitionLayout.LocationTableBuilder

LocationTableBuilder implementation that uses the default Deephaven CSV parser for type inference and coercion.

Constructor Summary

Constructors

Constructor	Description
LocationTableBuilderCsv(@NotNull File tableRootDirectory)

Method Summary

Modifier and Type	Method	Description
void	acceptLocation(@NotNull Collection<String> partitionValueStrings)	Accept an ordered collection of strings representing partition values for a particular table location, parallel to a previously registered collection of partition keys.
Table	build()	Build a Table with one column per partition key specified in registerPartitionKeys, and one row per location provided via acceptLocation, with cell values parallel to that location's partition values after any appropriate conversion has been applied.
void	registerPartitionKeys(@NotNull Collection<String> partitionKeys)	Register an ordered collection of strings representing partition keys.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

LocationTableBuilderCsv

public LocationTableBuilderCsv(@NotNull
 @NotNull File tableRootDirectory)

Method Details

registerPartitionKeys

public void registerPartitionKeys(@NotNull
 @NotNull Collection<String> partitionKeys)

Description copied from interface: KeyValuePartitionLayout.LocationTableBuilder

Register an ordered collection of strings representing partition keys. This should be called exactly once, and before any calls to acceptLocation.

Specified by:

registerPartitionKeys in interface KeyValuePartitionLayout.LocationTableBuilder

Parameters:

partitionKeys - The partition keys to register

acceptLocation

public void acceptLocation(@NotNull
 @NotNull Collection<String> partitionValueStrings)

Description copied from interface: KeyValuePartitionLayout.LocationTableBuilder

Accept an ordered collection of strings representing partition values for a particular table location, parallel to a previously registered collection of partition keys. Should be called after a single call to registerPartitionKeys.

Specified by:

acceptLocation in interface KeyValuePartitionLayout.LocationTableBuilder

Parameters:

partitionValueStrings - The partition values to accept. Must have the same length as the previously registered partition keys.

build

public Table build()

Description copied from interface: KeyValuePartitionLayout.LocationTableBuilder

Build a Table with one column per partition key specified in registerPartitionKeys, and one row per location provided via acceptLocation, with cell values parallel to that location's partition values after any appropriate conversion has been applied. The implementation is responsible for determining the appropriate column types.

Specified by:

build in interface KeyValuePartitionLayout.LocationTableBuilder

Returns:

The Table