Package io.deephaven.engine.table.impl.preview

Class ColumnPreviewManager

java.lang.Object

io.deephaven.engine.table.impl.preview.ColumnPreviewManager

public class ColumnPreviewManager
extends Object

Converts large data types to Preview types. Also wraps non-serializable data types to be serializable.

Constructor Summary

Constructors

Constructor	Description
ColumnPreviewManager()

Method Summary

Modifier and Type	Method	Description
static <S, D extends PreviewType> void	addPreview(Class<S> sourceType, Class<D> destType, Function<S,D> function)	Adds a data type to be converted to a Preview Type.
static Table	applyPreview(Table table)	Iterates over a tables columns and applies a preview (or wraps non-serializable).
static boolean	isColumnTypeDisplayable(Class<?> type)	Indicates if a column type is displayable by the client.
static boolean	isOnWhiteList(Class<?> type)	Indicates if a type is on the white list created from user defined properties.

Methods inherited from class java.lang.Object

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

Constructor Details

ColumnPreviewManager

public ColumnPreviewManager()

Method Details

addPreview

public static <S,
D extends PreviewType> void addPreview(Class<S> sourceType,
 Class<D> destType,
 Function<S,D> function)

Adds a data type to be converted to a Preview Type.

Type Parameters:

S - the source type

D - the destination type

Parameters:

sourceType - the type to convert

destType - the Preview type to convert to

function - the function that applies the conversion

applyPreview

public static Table applyPreview(Table table)

Iterates over a tables columns and applies a preview (or wraps non-serializable).

Parameters:

table - the table to apply the preview

Returns:

the table containing the preview columns

isColumnTypeDisplayable

public static boolean isColumnTypeDisplayable(Class<?> type)

Indicates if a column type is displayable by the client. This is used to screen out unknown classes, unserializable, and anything else that should not be displayed.

Parameters:

type - the column type

Returns:

true if the type can be displayed by the client, false otherwise.

isOnWhiteList

public static boolean isOnWhiteList(Class<?> type)

Indicates if a type is on the white list created from user defined properties.

Parameters:

type - the class type

Returns:

true if it is on the white list, false otherwise