Package net.sf.basedb.core

Class AnyToAny.FastLinkLoader<S extends BasicItem,T extends BasicItem>

java.lang.Object

net.sf.basedb.core.AnyToAny.FastLinkLoader<S,T>

Enclosing class:

AnyToAny

public static class AnyToAny.FastLinkLoader<S extends BasicItem,T extends BasicItem>
extends Object

Helper class for faster loading of any-to-any links between items. A single instance have a fixed source item type, link name and target item type. Before the loader can be used at least one of the preload() methods should be used.

Since:

3.19.8

Field Summary

Fields

Modifier and Type	Field	Description
private final DbControl	dc
private final Item	fromType
private final String	linkName
private final Map<Integer,AnyToAnyData>	links
private final Map<Integer,BasicData>	targets
private final Item	toType

Constructor Summary

Constructors

Constructor	Description
FastLinkLoader(DbControl dc, Item fromType, String linkName, Item toType)

Method Summary

Modifier and Type	Method	Description
Item	getFromType()	The source item type.
AnyToAny	getLink(S item)	Get the any-to-any link.
String	getLinkName()	The link name.
T	getTo(S item)	Get the target item that is linked from the source item by the named link.
Item	getToType()	The target item type.
AnyToAny.FastLinkLoader<S,T>	preload(Restriction linkRestriction, Restriction targetRestriction)	Pre-load links between source and target item type with the given link name and optionally extra restrictions for the any-to-any link and/or the target item type.
AnyToAny.FastLinkLoader<S,T>	preloadAll()	Pre-load all links between source and target item type with the given link name.
int	size()	Number of items that matches.

Methods inherited from class java.lang.Object

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

Field Details

dc

private final DbControl dc

fromType

private final Item fromType

toType

private final Item toType

linkName

private final String linkName

links

private final Map<Integer,AnyToAnyData> links

targets

private final Map<Integer,BasicData> targets

Constructor Details

FastLinkLoader

FastLinkLoader(DbControl dc,
 Item fromType,
 String linkName,
 Item toType)

Method Details

preloadAll

public AnyToAny.FastLinkLoader<S,T> preloadAll()

Pre-load all links between source and target item type with the given link name.

Returns:

This instance

preload

public AnyToAny.FastLinkLoader<S,T> preload(Restriction linkRestriction,
 Restriction targetRestriction)

Pre-load links between source and target item type with the given link name and optionally extra restrictions for the any-to-any link and/or the target item type.

Returns:

This instance

getFromType

public Item getFromType()

The source item type.

getToType

public Item getToType()

The target item type.

getLinkName

public String getLinkName()

The link name.

size

public int size()

Number of items that matches.

getLink

public AnyToAny getLink(S item)

Get the any-to-any link.

getTo

public T getTo(S item)

Get the target item that is linked from the source item by the named link.