DATACMNS-1328 - DefaultRepositoryInvokerFactory now uses a ConcurrentHashMap.

We now use ConcurrentHashMap to prevent ConcurrentModificationExceptions in multithreaded access to repository invokers.

Author: odrotbohm

src/main/java/org/springframework/data/repository/support/DefaultRepositoryInvokerFactory.java

@@ -16,8 +16,8 @@
 package org.springframework.data.repository.support;
 
 import java.io.Serializable;
-import java.util.HashMap;
 import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
 
 import org.springframework.core.convert.ConversionService;
 import org.springframework.data.repository.CrudRepository;
@@ -64,7 +64,7 @@ public DefaultRepositoryInvokerFactory(Repositories repositories, ConversionServ
 
 		this.repositories = repositories;
 		this.conversionService = conversionService;
-		this.invokers = new HashMap<Class<?>, RepositoryInvoker>();
+		this.invokers = new ConcurrentHashMap<Class<?>, RepositoryInvoker>();
 	}
 
 	/*