From d0baa48fcdbb19dd9ab065baba544490e975007e Mon Sep 17 00:00:00 2001
From: wing328 <wing328hk@gmail.com>
Date: Mon, 27 Jul 2015 11:21:51 +0800
Subject: [PATCH] fix empty operationId

---
 .../java/io/swagger/codegen/DefaultCodegen.java  | 16 +++++++++++++---
 .../main/java/io/swagger/client/model/Pet.java   |  4 ++--
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java b/modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java
index bc4f08d7f55..75ea2af9d62 100644
--- a/modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java
+++ b/modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java
@@ -1278,9 +1278,8 @@ public class DefaultCodegen {
         } else {
             m.emptyVars = true;
         }
-    }    public static String camelize(String word) {
-        return camelize(word, false);
     }
+    
 
     /**
      * Remove characters not suitable for variable or method name from the input and camelize it
@@ -1301,7 +1300,18 @@ public class DefaultCodegen {
             name = name.substring(0, 1).toLowerCase() + name.substring(1);
         }
         return name;
-    }    public static String camelize(String word, boolean lowercaseFirstLetter) {
+    }    
+
+    public static String camelize(String word) {
+        return camelize(word, false);
+    }
+
+    public static String camelize(String word, boolean lowercaseFirstLetter) {
+        // throw exception if method name is empty
+        if (StringUtils.isEmpty(word)) {
+            throw new RuntimeException("Empty method name (operationId) not allowed");
+        }
+
         // Replace all slashes with dots (package separator)
         Pattern p = Pattern.compile("\\/(.?)");
         Matcher m = p.matcher(word);
diff --git a/samples/client/petstore/java/src/main/java/io/swagger/client/model/Pet.java b/samples/client/petstore/java/src/main/java/io/swagger/client/model/Pet.java
index cf7ace02309..d7c2038dead 100644
--- a/samples/client/petstore/java/src/main/java/io/swagger/client/model/Pet.java
+++ b/samples/client/petstore/java/src/main/java/io/swagger/client/model/Pet.java
@@ -14,8 +14,8 @@ public class Pet  {
   private Long id = null;
   private Category category = null;
   private String name = null;
-  private List<String> photoUrls = new ArrayList<String>() ;
-  private List<Tag> tags = new ArrayList<Tag>() ;
+  private List<String> photoUrls = new ArrayList<String>();
+  private List<Tag> tags = new ArrayList<Tag>();
   public enum StatusEnum {
      available,  pending,  sold, 
   };