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cache null JavaMethod.getAnnotation result

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This commit is contained in:
peter
2012-07-26 19:55:26 +02:00
parent 313da5e6a7
commit 109e7a1068
1 changed files with 9 additions and 8 deletions
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xml/dom-openapi/src/com/intellij/util/xml/JavaMethod.java
+9 -8
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@@ -17,7 +17,7 @@ package com.intellij.util.xml;
import com.intellij.util.SmartFMap;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.annotations.NotNull;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
@@ -29,11 +29,12 @@ import java.util.List;
*/
public final class JavaMethod implements AnnotatedElement{
public static final JavaMethod[] EMPTY_ARRAY = new JavaMethod[0];
private static final Object NONE = new Object();
private final JavaMethodSignature mySignature;
private final Class myDeclaringClass;
private final Method myMethod;
private volatile SmartFMap<Class, Annotation> myAnnotationsMap = SmartFMap.emptyMap();
private volatile SmartFMap<Class, Object> myAnnotationsMap = SmartFMap.emptyMap();
private JavaMethod(final Class declaringClass, final JavaMethodSignature signature) {
mySignature = signature;
@@ -92,22 +93,22 @@ public final class JavaMethod implements AnnotatedElement{
}
public final <T extends Annotation> T getAnnotation(Class<T> annotationClass) {
//noinspection unchecked
T annotation = (T)myAnnotationsMap.get(annotationClass);
Object annotation = myAnnotationsMap.get(annotationClass);
if (annotation == null) {
myAnnotationsMap = myAnnotationsMap.plus(annotationClass, annotation = findAnnotation(annotationClass));
}
return annotation;
//noinspection unchecked
return annotation == NONE ? null : (T)annotation;
}
@Nullable private <T extends Annotation> T findAnnotation(Class<T> annotationClass) {
@NotNull private Object findAnnotation(Class<? extends Annotation> annotationClass) {
for (Method method : mySignature.getAllMethods(myDeclaringClass)) {
final T annotation = method.getAnnotation(annotationClass);
final Annotation annotation = method.getAnnotation(annotationClass);
if (annotation != null) {
return annotation;
}
}
return null;
return NONE;
}
@Override