diff --git a/modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenConfig.java b/modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenConfig.java
index 1b0e349daca..10d7363cc35 100644
--- a/modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenConfig.java
+++ b/modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenConfig.java
@@ -85,6 +85,8 @@ public interface CodegenConfig {
 
     Set<String> languageSpecificPrimitives();
 
+    void preprocessSwagger(Swagger swagger);
+
     void processSwagger(Swagger swagger);
 
     String toApiFilename(String name);
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 8fb6eee2964..f7d0ce3f45f 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
@@ -120,6 +120,10 @@ public class DefaultCodegen {
         return objs;
     }
 
+    //override with any special handling of the entire swagger spec
+    public void preprocessSwagger(Swagger swagger) {
+    }
+
     // override with any special handling of the entire swagger spec
     public void processSwagger(Swagger swagger) {
     }
diff --git a/modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultGenerator.java b/modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultGenerator.java
index e5a49f4eba4..80a25350d8b 100644
--- a/modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultGenerator.java
+++ b/modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultGenerator.java
@@ -71,6 +71,7 @@ public class DefaultGenerator extends AbstractGenerator implements Generator {
         List<File> files = new ArrayList<File>();
         try {
             config.processOpts();
+            config.preprocessSwagger(swagger);
 
             config.additionalProperties().put("generatedDate", DateTime.now().toString());
             config.additionalProperties().put("generatorClass", config.getClass().toString());
@@ -138,6 +139,12 @@ public class DefaultGenerator extends AbstractGenerator implements Generator {
             	List<String> sortedModelKeys = sortModelsByInheritance(definitions);
 
                 for (String name : sortedModelKeys) {
+
+                    //dont generate models that have an import mapping
+                    if(config.importMapping().containsKey(name)) {
+                        continue;
+                    }
+
                     Model model = definitions.get(name);
                     Map<String, Model> modelMap = new HashMap<String, Model>();
                     modelMap.put(name, model);