From cb339bf590a3a2b38f18557fb9147e0851db00ee Mon Sep 17 00:00:00 2001
From: "Anna.Kozlova" <anna.kozlova@jetbrains.com>
Date: Tue, 19 Apr 2016 19:00:46 +0200
Subject: [PATCH] extract parameter object: warn if existing class doesn't
 contain compatible constructor though method calls to modify are found

---
 .../JavaIntroduceParameterObjectDelegate.java                | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/java/java-impl/src/com/intellij/refactoring/introduceparameterobject/JavaIntroduceParameterObjectDelegate.java b/java/java-impl/src/com/intellij/refactoring/introduceparameterobject/JavaIntroduceParameterObjectDelegate.java
index adb864c95a62..c049c27b8ad5 100644
--- a/java/java-impl/src/com/intellij/refactoring/introduceparameterobject/JavaIntroduceParameterObjectDelegate.java
+++ b/java/java-impl/src/com/intellij/refactoring/introduceparameterobject/JavaIntroduceParameterObjectDelegate.java
@@ -279,6 +279,7 @@ public class JavaIntroduceParameterObjectDelegate
     }
 
     if (moveDestination != null) {
+      boolean constructorMiss = false;
       for (UsageInfo info : infos) {
         if (info instanceof IntroduceParameterObjectProcessor.ChangeSignatureUsageWrapper) {
           final UsageInfo usageInfo = ((IntroduceParameterObjectProcessor.ChangeSignatureUsageWrapper)info).getInfo();
@@ -289,6 +290,10 @@ public class JavaIntroduceParameterObjectDelegate
               conflicts.putValue(overridingMethod, "Created class won't be accessible");
             }
           }
+          if (!constructorMiss && classDescriptor.isUseExistingClass() && usageInfo instanceof MethodCallUsageInfo && classDescriptor.getExistingClassCompatibleConstructor() == null) {
+            conflicts.putValue(classDescriptor.getExistingClass(), "Existing class misses compatible constructor");
+            constructorMiss = true;
+          }
         }
       }
     }