Implementing gson in android client templates

modules/swagger-codegen/src/main/resources/android-java/apiInvoker.mustache

@@ -155,8 +155,7 @@ public class ApiInvoker {
   public static Object deserialize(String json, String containerType, Class cls) throws ApiException {
     try{
       if("list".equalsIgnoreCase(containerType) || "array".equalsIgnoreCase(containerType)) {
-        List response = (List<?>) JsonUtil.getGson().fromJson(json, cls);
-        return response;
+        return JsonUtil.deserializeToList(json, cls);
       }
       else if(String.class.equals(cls)) {
         if(json != null && json.startsWith("\"") && json.endsWith("\"") && json.length() > 1)
@@ -165,7 +164,7 @@ public class ApiInvoker {
           return json;
       }
       else {
-        return JsonUtil.getGson().fromJson(json, cls);
+        return JsonUtil.deserializeToObject(json, cls);
       }
     }
     catch (JsonParseException e) {
@@ -176,7 +175,7 @@ public class ApiInvoker {
   public static String serialize(Object obj) throws ApiException {
     try {
       if (obj != null)
-        return JsonUtil.getGson().toJson(obj);
+        return JsonUtil.serialize(obj);
       else
         return null;
     }

modules/swagger-codegen/src/main/resources/android-java/build.mustache

@@ -28,17 +28,13 @@ android {
 ext {
     swagger_annotations_version = "1.5.3-M1"
     gson_version = "2.3.1"
-    jackson_version = "2.5.2"
     httpclient_version = "4.3.3"
     junit_version = "4.8.1"
 }
 
 dependencies {
     compile "com.wordnik:swagger-annotations:$swagger_annotations_version"
-    compile "com.fasterxml.jackson.core:jackson-core:$jackson_version"
     compile "com.google.code.gson:gson:$gson_version"
-    compile "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"
-    compile "com.fasterxml.jackson.core:jackson-databind:$jackson_version"
     compile "org.apache.httpcomponents:httpcore:$httpclient_version"
     compile "org.apache.httpcomponents:httpclient:$httpclient_version"
     compile "org.apache.httpcomponents:httpmime:$httpclient_version"

modules/swagger-codegen/src/main/resources/android-java/jsonUtil.mustache

@@ -2,6 +2,10 @@ package {{invokerPackage}};
 
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
+import com.google.gson.reflect.TypeToken;
+import java.lang.reflect.Type;
+import java.util.List;
+import io.swagger.client.model.*;
 
 public class JsonUtil {
   public static GsonBuilder gsonBuilder;
@@ -9,9 +13,53 @@ public class JsonUtil {
   static {
     gsonBuilder = new GsonBuilder();
     gsonBuilder.serializeNulls();
+    gsonBuilder.setDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ");
   }
 
   public static Gson getGson() {
     return gsonBuilder.create();
   }
+
+  public static String serialize(Object obj){
+    return getGson().toJson(obj);
+  }
+
+  public static <T> T deserializeToList(String jsonString, Class cls){
+    return getGson().fromJson(jsonString, getListTypeForDeserialization(cls));
+  }
+
+  public static <T> T deserializeToObject(String jsonString, Class cls){
+    return getGson().fromJson(jsonString, getTypeForDeserialization(cls));
+  }
+
+  public static Type getListTypeForDeserialization(Class cls) {
+    Type type = null;
+    switch (cls.getSimpleName()) {
+      {{#models}}{{#model}}
+      case "{{classname}}":
+        type = new TypeToken<List<{{classname}}>>(){}.getType();
+        break;
+      {{/model}}{{/models}}
+      default:
+        type = new TypeToken<List<Object>>(){}.getType();
+        break;
+    }
+    return type;
+  }
+
+  public static Type getTypeForDeserialization(Class cls) {
+    Type type = null;
+    switch (cls.getSimpleName()) {
+      {{#models}}{{#model}}
+      case "{{classname}}":
+        type = new TypeToken<{{classname}}>(){}.getType();
+      break;
+      {{/model}}{{/models}}
+      default:
+        type = new TypeToken<Object>(){}.getType();
+        break;
+    }
+    return type;
+  }
+
 };

samples/client/petstore/android-java/build.gradle

@@ -28,17 +28,13 @@ android {
 ext {
     swagger_annotations_version = "1.5.3-M1"
     gson_version = "2.3.1"
-    jackson_version = "2.5.2"
     httpclient_version = "4.3.3"
     junit_version = "4.8.1"
 }
 
 dependencies {
     compile "com.wordnik:swagger-annotations:$swagger_annotations_version"
-    compile "com.fasterxml.jackson.core:jackson-core:$jackson_version"
     compile "com.google.code.gson:gson:$gson_version"
-    compile "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"
-    compile "com.fasterxml.jackson.core:jackson-databind:$jackson_version"
     compile "org.apache.httpcomponents:httpcore:$httpclient_version"
     compile "org.apache.httpcomponents:httpclient:$httpclient_version"
     compile "org.apache.httpcomponents:httpmime:$httpclient_version"

samples/client/petstore/android-java/src/main/java/io/swagger/client/ApiInvoker.java

@@ -152,14 +152,10 @@ public class ApiInvoker {
     return str;
   }
 
-  public <T> T submitUrl(String url){
-    Type typeOfT = new TypeToken<RestResponse<T>>(){}.getType();
-  }
   public static Object deserialize(String json, String containerType, Class cls) throws ApiException {
     try{
       if("list".equalsIgnoreCase(containerType) || "array".equalsIgnoreCase(containerType)) {
-        List response = (List<?>) JsonUtil.getGson().fromJson(json, cls);
-        return response;
+        return JsonUtil.deserializeToList(json, cls);
       }
       else if(String.class.equals(cls)) {
         if(json != null && json.startsWith("\"") && json.endsWith("\"") && json.length() > 1)
@@ -168,7 +164,7 @@ public class ApiInvoker {
           return json;
       }
       else {
-        return JsonUtil.getGson().fromJson(json, cls);
+        return JsonUtil.deserializeToObject(json, cls);
       }
     }
     catch (JsonParseException e) {
@@ -179,7 +175,7 @@ public class ApiInvoker {
   public static String serialize(Object obj) throws ApiException {
     try {
       if (obj != null)
-        return JsonUtil.getGson().toJson(obj);
+        return JsonUtil.serialize(obj);
       else
         return null;
     }

samples/client/petstore/android-java/src/main/java/io/swagger/client/JsonUtil.java

@@ -2,6 +2,10 @@ package io.swagger.client;
 
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
+import com.google.gson.reflect.TypeToken;
+import java.lang.reflect.Type;
+import java.util.List;
+import io.swagger.client.model.*;
 
 public class JsonUtil {
   public static GsonBuilder gsonBuilder;
@@ -9,9 +13,85 @@ public class JsonUtil {
   static {
     gsonBuilder = new GsonBuilder();
     gsonBuilder.serializeNulls();
+    gsonBuilder.setDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ");
   }
 
   public static Gson getGson() {
     return gsonBuilder.create();
   }
+
+  public static String serialize(Object obj){
+    return getGson().toJson(obj);
+  }
+
+  public static <T> T deserializeToList(String jsonString, Class cls){
+    return getGson().fromJson(jsonString, getListTypeForDeserialization(cls));
+  }
+
+  public static <T> T deserializeToObject(String jsonString, Class cls){
+    return getGson().fromJson(jsonString, getTypeForDeserialization(cls));
+  }
+
+  public static Type getListTypeForDeserialization(Class cls) {
+    Type type = null;
+    switch (cls.getSimpleName()) {
+      
+      case "User":
+        type = new TypeToken<List<User>>(){}.getType();
+        break;
+      
+      case "Category":
+        type = new TypeToken<List<Category>>(){}.getType();
+        break;
+      
+      case "Pet":
+        type = new TypeToken<List<Pet>>(){}.getType();
+        break;
+      
+      case "Tag":
+        type = new TypeToken<List<Tag>>(){}.getType();
+        break;
+      
+      case "Order":
+        type = new TypeToken<List<Order>>(){}.getType();
+        break;
+      
+      default:
+        type = new TypeToken<List<Object>>(){}.getType();
+        break;
+    }
+    return type;
+  }
+
+  public static Type getTypeForDeserialization(Class cls) {
+    Type type = null;
+    switch (cls.getSimpleName()) {
+      
+      case "User":
+        type = new TypeToken<User>(){}.getType();
+      break;
+      
+      case "Category":
+        type = new TypeToken<Category>(){}.getType();
+      break;
+      
+      case "Pet":
+        type = new TypeToken<Pet>(){}.getType();
+      break;
+      
+      case "Tag":
+        type = new TypeToken<Tag>(){}.getType();
+      break;
+      
+      case "Order":
+        type = new TypeToken<Order>(){}.getType();
+      break;
+      
+      default:
+        type = new TypeToken<Object>(){}.getType();
+        break;
+    }
+    return type;
+  }
+
 };

samples/client/petstore/android-java/src/main/java/io/swagger/client/model/Pet.java

@@ -1,8 +1,8 @@
 package io.swagger.client.model;
 
 import io.swagger.client.model.Category;
-import java.util.*;
 import io.swagger.client.model.Tag;
+import java.util.*;
 
 import com.wordnik.swagger.annotations.*;
 import com.google.gson.annotations.SerializedName;