IDEA-90142 Do not propose contant names after '@'

java/java-impl/src/com/intellij/codeInsight/completion/JavaCompletionContributor.java

@@ -113,7 +113,8 @@ public class JavaCompletionContributor extends CompletionContributor {
     }
 
     if (JavaCompletionData.DECLARATION_START.accepts(position) ||
-        JavaCompletionData.isInsideParameterList(position)) {
+        JavaCompletionData.isInsideParameterList(position) ||
+        psiElement().inside(psiElement(PsiJavaCodeReferenceElement.class).withParent(psiAnnotation())).accepts(position)) {
       return new OrFilter(ElementClassFilter.CLASS, ElementClassFilter.PACKAGE_FILTER);
     }
 

java/java-tests/testData/codeInsight/completion/normal/OnlyAnnotationsAfterAt2.java

@@ -0,0 +1,12 @@
+import static BeanUtil.A.NOT_NULL;
+class BeanUtil {
+  public static class A {
+    public static final Object NOT_NULL = null;
+  }
+  @NN<caret>
+  String foo() {
+    return null;
+  }
+}
+
+@interface NotNull {}

java/java-tests/testData/codeInsight/completion/normal/OnlyAnnotationsAfterAt2_after.java

@@ -0,0 +1,12 @@
+import static BeanUtil.A.NOT_NULL;
+class BeanUtil {
+  public static class A {
+    public static final Object NOT_NULL = null;
+  }
+  @NotNull<caret>
+  String foo() {
+    return null;
+  }
+}
+
+@interface NotNull {}

java/java-tests/testSrc/com/intellij/codeInsight/completion/NormalCompletionTest.groovy

@@ -991,6 +991,7 @@ public class ListUtils {
   public void testLiveTemplatePrefixTab() throws Throwable {doTest('\t') }
 
   public void testOnlyAnnotationsAfterAt() throws Throwable { doTest() }
+  public void testOnlyAnnotationsAfterAt2() throws Throwable { doTest() }
 
   public void testOnlyExceptionsInCatch1() throws Exception { doTest('\n') }
   public void testOnlyExceptionsInCatch2() throws Exception { doTest('\n') }