uk.ac.starlink.ttools.plot2.data

Class ByteStoreColumnFactory

java.lang.Object

uk.ac.starlink.ttools.plot2.data.ByteStoreColumnFactory

All Implemented Interfaces:

CachedColumnFactory

public class ByteStoreColumnFactory
extends Object
implements CachedColumnFactory

ColumnFactory that stores column data in ByteStores.

Since:

23 Dec 2019

Author:

Mark Taylor

Constructor Summary

Constructors

Constructor and Description
ByteStoreColumnFactory(StoragePolicy storage) Constructs a ByteStoreColumnFactory based on a StoragePolicy.
ByteStoreColumnFactory(java.util.function.Supplier<ByteStore> byteStoreSupplier) Constructs a ByteStoreColumnFactory based on a ByteStore supplier.

Method Summary

Modifier and Type	Method and Description
CachedColumn	createColumn(StorageType type, long nrow) Creates a data storage object capable of storing a vector of a given type.

Methods inherited from class java.lang.Object

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

Constructor Detail

ByteStoreColumnFactory

public ByteStoreColumnFactory(StoragePolicy storage)

Constructs a ByteStoreColumnFactory based on a StoragePolicy.

Parameters:

storage - storage policy

ByteStoreColumnFactory

public ByteStoreColumnFactory(java.util.function.Supplier<ByteStore> byteStoreSupplier)

Constructs a ByteStoreColumnFactory based on a ByteStore supplier.

Parameters:

byteStoreSupplier - supplier

Method Detail

createColumn

public CachedColumn createColumn(StorageType type,
                                 long nrow)

Description copied from interface: CachedColumnFactory

Creates a data storage object capable of storing a vector of a given type. Both fixed and unknown element counts are supported.

Specified by:

createColumn in interface CachedColumnFactory

Parameters:

type - data type of elements to be stored

nrow - maximum number of elements to be stored; if a value <0 is supplied, an indeterminate number is permitted

Returns:

storage object