Package cn.nukkit.command.selector.args

Class CachedSimpleSelectorArgument

java.lang.Object

cn.nukkit.command.selector.args.CachedSimpleSelectorArgument

All Implemented Interfaces:

ISelectorArgument, Comparable<ISelectorArgument>

Direct Known Subclasses:

L, LM, M, Name, RX, RXM, RY, RYM, Scores, Tag, Type

@PowerNukkitXOnly
@Since("1.19.60-r1")
public abstract class CachedSimpleSelectorArgument
extends Object
implements ISelectorArgument

可缓存的目标选择器参数基类

若一个选择器的参数返回的List<Predicate<Entity>>不具有时效性，则可继承此类实现对解析结果的缓存，提高性能

Constructor Summary

Constructors

Constructor	Description
CachedSimpleSelectorArgument()

Method Summary

Modifier and Type	Method	Description
protected abstract Predicate<Entity>	cache(SelectorType selectorType, CommandSender sender, Location basePos, String... arguments)	当未在缓存中找到解析结果时，则调用此方法对参数进行解析
Predicate<Entity>	getPredicate(SelectorType selectorType, CommandSender sender, Location basePos, String... arguments)	根据给定的参数表返回特定的List<Predicate<Entity>>
protected com.github.benmanes.caffeine.cache.Cache<Set<String>,Predicate<Entity>>	provideCacheService()	初始化缓存时调用此方法

Methods inherited from class java.lang.Object

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

Methods inherited from interface cn.nukkit.command.selector.args.ISelectorArgument

compareTo, getDefaultValue, getFilter, getKeyName, getPriority, isFilter

Constructor Details

CachedSimpleSelectorArgument

public CachedSimpleSelectorArgument()

Method Details

getPredicate

public Predicate<Entity> getPredicate(SelectorType selectorType,
 CommandSender sender,
 Location basePos,
 String... arguments)
                               throws SelectorSyntaxException

Description copied from interface: ISelectorArgument

根据给定的参数表返回特定的List<Predicate<Entity>>

Specified by:

getPredicate in interface ISelectorArgument

Parameters:

selectorType - 选择器类型

sender - 命令发送者

basePos - 若此参数解析需要用到相对坐标，则应该以此坐标为依据

若此参数需要修改参照坐标(例如x,y,z参数)，则应当在这个参数上修改

在一条解析链上的参数只会使用一个Location对象

arguments - 参数列表

Returns:

Predicate<Entity>

Throws:

SelectorSyntaxException - 当解析出错

cache

protected abstract Predicate<Entity> cache(SelectorType selectorType,
 CommandSender sender,
 Location basePos,
 String... arguments)
                                    throws SelectorSyntaxException

当未在缓存中找到解析结果时，则调用此方法对参数进行解析

Throws:

SelectorSyntaxException

provideCacheService

protected com.github.benmanes.caffeine.cache.Cache<Set<String>,Predicate<Entity>> provideCacheService()

初始化缓存时调用此方法

若需要自己的缓存实现，则可覆写此方法

Returns:

Cache<Set<String>, Predicate<Entity>>