ensure dots are excluded from applicable name suggestions (IDEA-195113)

java/java-impl/src/com/intellij/psi/impl/source/codeStyle/JavaCodeStyleManagerImpl.java

@@ -632,7 +632,7 @@ public class JavaCodeStyleManagerImpl extends JavaCodeStyleManager {
               final PsiExpression qualifierExpression = methodExpr.getQualifierExpression();
               if (qualifierExpression instanceof PsiReferenceExpression &&
                   ((PsiReferenceExpression)qualifierExpression).resolve() instanceof PsiVariable) {
-                String name = qualifierExpression.getText() + StringUtil.capitalize(propertyName);
+                String name = StringUtil.getShortName(qualifierExpression.getText()) + StringUtil.capitalize(propertyName);
                 return new NamesByExprInfo(propertyName, name);
               }
               return new NamesByExprInfo(propertyName);

java/java-tests/testSrc/com/intellij/java/refactoring/RenameSuggestionsTest.groovy

@@ -132,6 +132,22 @@ class Car {}
     assert suggestions == ["car", "optionalCar", "carOptional", "optional", "o"]
   }
 
+  void "test long qualified name"() {
+    def suggestions = getNameSuggestions("""
+class Foo {
+  Inner inner;
+  class Inner {
+    String getCat() {}
+  }
+  
+  void m(Foo f){
+    String <caret>s = f.inner.getCat(); 
+  }
+}
+""")
+    assert suggestions == ["cat", "innerCat", "s"]
+  }
+
   private doTestSuggestionAvailable(String text, String... expectedSuggestions) {
     def suggestions = getNameSuggestions(text)
     for (String suggestion : expectedSuggestions) {