Resolve type safety warning

Author: Stephen Powis

src/main/java/org/sourcelab/kafka/connect/apiclient/request/JacksonFactory.java

@@ -20,6 +20,9 @@
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.PropertyNamingStrategy;
+import com.fasterxml.jackson.databind.type.MapType;
+
+import java.util.Map;
 
 /**
  * Creates properly configured Jackson XML Mapper instances.
@@ -32,6 +35,12 @@ public final class JacksonFactory {
      */
     private static final ObjectMapper mapper = new ObjectMapper();
 
+    /**
+     * Defines a "type safe" Map[String, String] deserialization type for Jackson.
+     */
+    public static final MapType mapTypeStringString = mapper.getTypeFactory()
+        .constructMapType(Map.class, String.class, String.class);
+
     /*
      * Statically configure the instance.
      */

src/main/java/org/sourcelab/kafka/connect/apiclient/request/get/GetConnectorConfig.java

@@ -53,6 +53,6 @@ public Object getRequestBody() {
 
     @Override
     public Map<String, String> parseResponse(final String responseStr) throws IOException {
-        return JacksonFactory.newInstance().readValue(responseStr, Map.class);
+        return JacksonFactory.newInstance().readValue(responseStr, JacksonFactory.mapTypeStringString);
     }
 }