diff --git a/ChangeLog b/ChangeLog
index 229de382..6ef285c7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2010-06-09  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
+
+	Made protected member variable private. Added accessor funcs.
+	* src/CheckIntegrityCommand.cc
+	* src/FileAllocationCommand.cc
+	* src/RealtimeCommand.h
+
 2010-06-09  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
 
 	Made protected member variable private. Added accessor funcs.
diff --git a/src/CheckIntegrityCommand.cc b/src/CheckIntegrityCommand.cc
index 32748488..262f2626 100644
--- a/src/CheckIntegrityCommand.cc
+++ b/src/CheckIntegrityCommand.cc
@@ -60,59 +60,59 @@ CheckIntegrityCommand::~CheckIntegrityCommand() {}
 
 bool CheckIntegrityCommand::executeInternal()
 {
-  if(_requestGroup->isHaltRequested()) {
-    _e->getCheckIntegrityMan()->dropPickedEntry();
+  if(getRequestGroup()->isHaltRequested()) {
+    getDownloadEngine()->getCheckIntegrityMan()->dropPickedEntry();
     return true;
   }
   _entry->validateChunk();
   if(_entry->finished()) {
-    _e->getCheckIntegrityMan()->dropPickedEntry();
+    getDownloadEngine()->getCheckIntegrityMan()->dropPickedEntry();
     // Enable control file saving here. See also
     // RequestGroup::processCheckIntegrityEntry() to know why this is
     // needed.
-    _requestGroup->enableSaveControlFile();
-    if(_requestGroup->downloadFinished()) {
+    getRequestGroup()->enableSaveControlFile();
+    if(getRequestGroup()->downloadFinished()) {
       getLogger()->notice
         (MSG_VERIFICATION_SUCCESSFUL,
-         _requestGroup->getDownloadContext()->getBasePath().c_str());
+         getRequestGroup()->getDownloadContext()->getBasePath().c_str());
       std::vector<Command*> commands;
       try {
-        _entry->onDownloadFinished(commands, _e);
+        _entry->onDownloadFinished(commands, getDownloadEngine());
       } catch(RecoverableException& e) {
         std::for_each(commands.begin(), commands.end(), Deleter());
         throw;
       }
-      _e->addCommand(commands);
+      getDownloadEngine()->addCommand(commands);
     } else {
       getLogger()->error
         (MSG_VERIFICATION_FAILED,
-         _requestGroup->getDownloadContext()->getBasePath().c_str());
+         getRequestGroup()->getDownloadContext()->getBasePath().c_str());
       std::vector<Command*> commands;
       try {
-        _entry->onDownloadIncomplete(commands,_e);
+        _entry->onDownloadIncomplete(commands, getDownloadEngine());
       } catch(RecoverableException& e) {
         std::for_each(commands.begin(), commands.end(), Deleter());
         throw;
       }
-      _e->addCommand(commands);
+      getDownloadEngine()->addCommand(commands);
     }
-    _e->setNoWait(true);
+    getDownloadEngine()->setNoWait(true);
     return true;
   } else {
-    _e->addCommand(this);
+    getDownloadEngine()->addCommand(this);
     return false;
   }
 }
 
 bool CheckIntegrityCommand::handleException(Exception& e)
 {
-  _e->getCheckIntegrityMan()->dropPickedEntry();
+  getDownloadEngine()->getCheckIntegrityMan()->dropPickedEntry();
   getLogger()->error(MSG_FILE_VALIDATION_FAILURE, e,
                      util::itos(getCuid()).c_str());
   getLogger()->error
     (MSG_DOWNLOAD_NOT_COMPLETE,
      util::itos(getCuid()).c_str(),
-     _requestGroup->getDownloadContext()->getBasePath().c_str());
+     getRequestGroup()->getDownloadContext()->getBasePath().c_str());
   return true;
 }
 
diff --git a/src/FileAllocationCommand.cc b/src/FileAllocationCommand.cc
index 7e615c95..04bcc377 100644
--- a/src/FileAllocationCommand.cc
+++ b/src/FileAllocationCommand.cc
@@ -62,8 +62,8 @@ FileAllocationCommand::~FileAllocationCommand() {}
 
 bool FileAllocationCommand::executeInternal()
 {
-  if(_requestGroup->isHaltRequested()) {
-    _e->getFileAllocationMan()->dropPickedEntry();
+  if(getRequestGroup()->isHaltRequested()) {
+    getDownloadEngine()->getFileAllocationMan()->dropPickedEntry();
     return true;
   }
   _fileAllocationEntry->allocateChunk();
@@ -72,34 +72,34 @@ bool FileAllocationCommand::executeInternal()
       getLogger()->debug
         (MSG_ALLOCATION_COMPLETED,
          _timer.difference(global::wallclock),
-         util::itos(_requestGroup->getTotalLength(), true).c_str());
+         util::itos(getRequestGroup()->getTotalLength(), true).c_str());
     }
-    _e->getFileAllocationMan()->dropPickedEntry();
+    getDownloadEngine()->getFileAllocationMan()->dropPickedEntry();
     
     std::vector<Command*> commands;
     try {
-      _fileAllocationEntry->prepareForNextAction(commands, _e);
+      _fileAllocationEntry->prepareForNextAction(commands, getDownloadEngine());
     } catch(RecoverableException& e) {
       std::for_each(commands.begin(), commands.end(), Deleter());
       throw;
     }
-    _e->addCommand(commands);
-    _e->setNoWait(true);
+    getDownloadEngine()->addCommand(commands);
+    getDownloadEngine()->setNoWait(true);
     return true;
   } else {
-    _e->addCommand(this);
+    getDownloadEngine()->addCommand(this);
     return false;
   }
 }
 
 bool FileAllocationCommand::handleException(Exception& e)
 {
-  _e->getFileAllocationMan()->dropPickedEntry();
+  getDownloadEngine()->getFileAllocationMan()->dropPickedEntry();
   getLogger()->error
     (MSG_FILE_ALLOCATION_FAILURE, e, util::itos(getCuid()).c_str());
   getLogger()->error
     (MSG_DOWNLOAD_NOT_COMPLETE, util::itos(getCuid()).c_str(),
-     _requestGroup->getDownloadContext()->getBasePath().c_str());
+     getRequestGroup()->getDownloadContext()->getBasePath().c_str());
   return true;
 }
 
diff --git a/src/RealtimeCommand.h b/src/RealtimeCommand.h
index 34b9f635..779e05cb 100644
--- a/src/RealtimeCommand.h
+++ b/src/RealtimeCommand.h
@@ -44,9 +44,19 @@ class DownloadEngine;
 class Exception;
 
 class RealtimeCommand : public Command {
-protected:
+private:
   RequestGroup* _requestGroup;
   DownloadEngine* _e;
+protected:
+  DownloadEngine* getDownloadEngine() const
+  {
+    return _e;
+  }
+
+  RequestGroup* getRequestGroup() const
+  {
+    return _requestGroup;
+  }
 public:
   RealtimeCommand(cuid_t cuid, RequestGroup* requestGroup, DownloadEngine* e);