Fixed bug. When @CommandHandler method has no argument(i.e. when work in progress), then no NPE should be prevented

Author: rinokadijk

src/main/java/org/axonframework/intellij/ide/plugin/publisher/CommandEventPublisher.java

@@ -14,7 +14,7 @@ public CommandEventPublisher(PsiType psiType, PsiElement psiElement) {
 
     @Override
     public boolean canPublishType(PsiType eventType) {
-        return eventType.isAssignableFrom(commandType);
+        return eventType != null && eventType.isAssignableFrom(commandType);
     }
 
     @Override

src/main/java/org/axonframework/intellij/ide/plugin/publisher/DefaultEventPublisherProvider.java

@@ -80,10 +80,16 @@ private void findAndRegisterAllConstructors(PsiTypeElement firstCommandHandlerAr
                             .findClass(type.getCanonicalText(), GlobalSearchScope.allScope(project));
                     if (parameterClass != null) {
                         PsiMethod[] constructors = parameterClass.getConstructors();
-                        registerAllConstructorInvocations(type, constructors);
+                        if (parameterClassHasConstructor(constructors)) {
+                            registerAllConstructorInvocations(type, constructors);
+                        }
                     }
                 }
 
+                private boolean parameterClassHasConstructor(PsiMethod[] constructors) {
+                    return constructors.length > 0;
+                }
+
                 private void registerAllConstructorInvocations(final PsiType type, PsiMethod[] constructors) {
                     for (PsiMethod constructor : constructors) {
                         Query<PsiReference> constructorCalls = MethodReferencesSearch.search(constructor);

src/main/resources/META-INF/plugin.xml

@@ -12,6 +12,13 @@
     </description>
 
     <change-notes><![CDATA[
+        Version 0.3.5<br />
+        -------------<br />
+        <ul>
+            <li>Several bugfixes for IDEAPLUGIN-4</li>
+        </ul>
+        <br />
+        <br />
         Version 0.3.4<br />
         -------------<br />
         <ul>