Package io.deephaven.engine.table.impl

Class CodecLookup

java.lang.Object

io.deephaven.engine.table.impl.CodecLookup

public class CodecLookup
extends Object

Utility class to concentrate ObjectCodec lookups.

Constructor Summary

Constructors

Constructor	Description
CodecLookup()

Method Summary

Modifier and Type	Method	Description
static boolean	codecRequired(@NotNull ColumnDefinition<?> columnDefinition)	Test whether a codec is required to write or read the supplied ColumnDefinition.
static boolean	codecRequired(@NotNull Class<?> dataType, @Nullable Class<?> componentType)	Test whether a codec is required to write or read the supplied types.
static boolean	explicitCodecPresent(String codecClassName)	Test whether an explicit codec has been set.
static <TYPE> ObjectCodec<TYPE>	getDefaultCodec(@NotNull Class<TYPE> dataType)	Get the default codec for the supplied data type.
static <TYPE> ObjectCodec<TYPE>	lookup(@NotNull ColumnDefinition<TYPE> columnDefinition, @NotNull ColumnToCodecMappings codecMappings)	Lookup an ObjectCodec for the supplied ColumnDefinition.
static <TYPE> ObjectCodec<TYPE>	lookup(@NotNull Class<TYPE> dataType, String codecClassName, String codecArguments)	Lookup an ObjectCodec for the supplied data type, codec class name, and arguments.

Methods inherited from class java.lang.Object

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

Constructor Details

CodecLookup

public CodecLookup()

Method Details

codecRequired

public static boolean codecRequired(@NotNull
 @NotNull ColumnDefinition<?> columnDefinition)

Test whether a codec is required to write or read the supplied ColumnDefinition.

Parameters:

columnDefinition - The ColumnDefinition

Returns:

Whether a codec is required

codecRequired

public static boolean codecRequired(@NotNull
 @NotNull Class<?> dataType,
 @Nullable
 @Nullable Class<?> componentType)

Test whether a codec is required to write or read the supplied types.

Parameters:

dataType - The data type to check

componentType - The component type to check, for array and Vector types

Returns:

Whether a codec is required

explicitCodecPresent

public static boolean explicitCodecPresent(String codecClassName)

Test whether an explicit codec has been set.

Parameters:

codecClassName - The codec class name

Returns:

Whether an explicit codec has been set

lookup

public static <TYPE> ObjectCodec<TYPE> lookup(@NotNull
 @NotNull ColumnDefinition<TYPE> columnDefinition,
 @NotNull
 @NotNull ColumnToCodecMappings codecMappings)

Lookup an ObjectCodec for the supplied ColumnDefinition. Assumes that the data type is appropriate for use with a codec, i.e. that codecRequired(Class, Class) will return false.

Parameters:

columnDefinition - The ColumnDefinition

Returns:

The ObjectCodec

lookup

public static <TYPE> ObjectCodec<TYPE> lookup(@NotNull
 @NotNull Class<TYPE> dataType,
 String codecClassName,
 String codecArguments)

Lookup an ObjectCodec for the supplied data type, codec class name, and arguments. Assumes that the data type is appropriate for use with a codec, i.e. that codecRequired(Class, Class) will return false.

Parameters:

dataType - The data type

codecClassName - The codec class name

codecArguments - The codec arguments in string form

Returns:

The ObjectCodec

getDefaultCodec

public static <TYPE> ObjectCodec<TYPE> getDefaultCodec(@NotNull
 @NotNull Class<TYPE> dataType)

Get the default codec for the supplied data type.

Parameters:

dataType - The data type

Returns:

The default ObjectCodec