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Use a BiMap in UuidCache

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Luck 2016-09-19 21:13:45 +01:00
parent b1e34b55f8
commit 50fd954599
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1 changed files with 7 additions and 14 deletions
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21
common/src/main/java/me/lucko/luckperms/core/UuidCache.java
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@ -22,12 +22,12 @@
package me.lucko.luckperms.core; package me.lucko.luckperms.core;
import com.google.common.collect.BiMap;
import com.google.common.collect.HashBiMap;
import com.google.common.collect.Maps;
import lombok.Getter; import lombok.Getter;
import java.util.Map;
import java.util.Optional;
import java.util.UUID; import java.util.UUID;
import java.util.concurrent.ConcurrentHashMap;
/** /**
* @see me.lucko.luckperms.api.UuidCache for docs * @see me.lucko.luckperms.api.UuidCache for docs
@ -35,7 +35,7 @@ import java.util.concurrent.ConcurrentHashMap;
public class UuidCache { public class UuidCache {
// External UUID --> Internal UUID // External UUID --> Internal UUID
private Map<UUID, UUID> cache; private BiMap<UUID, UUID> cache;
@Getter @Getter
private final boolean onlineMode; private final boolean onlineMode;
@ -44,23 +44,16 @@ public class UuidCache {
this.onlineMode = onlineMode; this.onlineMode = onlineMode;
if (!onlineMode) { if (!onlineMode) {
cache = new ConcurrentHashMap<>(); cache = Maps.synchronizedBiMap(HashBiMap.create());
} }
} }
public UUID getUUID(UUID external) { public UUID getUUID(UUID external) {
return onlineMode ? external : (cache.containsKey(external) ? cache.get(external) : external); return onlineMode ? external : cache.getOrDefault(external, external);
} }
public UUID getExternalUUID(UUID internal) { public UUID getExternalUUID(UUID internal) {
if (onlineMode) return internal; return onlineMode ? internal : cache.inverse().getOrDefault(internal, internal);
Optional<UUID> external = cache.entrySet().stream()
.filter(e -> e.getValue().equals(internal))
.map(Map.Entry::getKey)
.findFirst();
return external.isPresent() ? external.get() : internal;
} }
public void addToCache(UUID external, UUID internal) { public void addToCache(UUID external, UUID internal) {