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Use computeIfAbsent in LocalVariableTableParameterNameDiscoverer

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Closes gh-23281
This commit is contained in:
mfeng-ya
2019-07-12 17:44:10 +08:00
committed by Sam Brannen
parent 5b341f620a
commit 309b328719
1 changed files with 2 additions and 10 deletions
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12
spring-core/src/main/java/org/springframework/core/LocalVariableTableParameterNameDiscoverer.java
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@@ -69,11 +69,7 @@ public class LocalVariableTableParameterNameDiscoverer implements ParameterNameD
public String[] getParameterNames(Method method) {
Method originalMethod = BridgeMethodResolver.findBridgedMethod(method);
Class<?> declaringClass = originalMethod.getDeclaringClass();
Map<Member, String[]> map = this.parameterNamesCache.get(declaringClass);
if (map == null) {
map = inspectClass(declaringClass);
this.parameterNamesCache.put(declaringClass, map);
}
Map<Member, String[]> map = this.parameterNamesCache.computeIfAbsent(declaringClass, this::inspectClass);
if (map != NO_DEBUG_INFO_MAP) {
return map.get(originalMethod);
}
@@ -84,11 +80,7 @@ public class LocalVariableTableParameterNameDiscoverer implements ParameterNameD
@Nullable
public String[] getParameterNames(Constructor<?> ctor) {
Class<?> declaringClass = ctor.getDeclaringClass();
Map<Member, String[]> map = this.parameterNamesCache.get(declaringClass);
if (map == null) {
map = inspectClass(declaringClass);
this.parameterNamesCache.put(declaringClass, map);
}
Map<Member, String[]> map = this.parameterNamesCache.computeIfAbsent(declaringClass, this::inspectClass);
if (map != NO_DEBUG_INFO_MAP) {
return map.get(ctor);
}