bug TDI-23383 fixed : Merge reference project can not work

git-svn-id: http://talendforge.org/svn/tos/trunk@93012 f6f1c999-d317-4740-80b0-e6d1abc6f99e

org.talend.core.runtime/src/main/java/org/talend/core/model/repository/RepositoryManager.java

@@ -50,6 +50,16 @@ public final class RepositoryManager {
         return CoreRuntimePlugin.getInstance().getDesignerCoreService().getDesignerCorePreferenceStore();
     }
 
+    /**
+     * 
+     * DOC wchen DesignerCorePreference disappear in some case ,so i change to use repository preference store.
+     * 
+     * @return
+     */
+    public static IPreferenceStore getRepositoryPreferenceStore() {
+        return CoreRuntimePlugin.getInstance().getRepositoryService().getRepositoryPreferenceStore();
+    }
+
     public static boolean isRefreshManually() {
         return getPreferenceStore().getBoolean(IRepositoryPrefConstants.MANUALLY_REFRESH);
     }