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diff --git a/TAO/CIAO/tools/Assembly_Deployer/Assembly_Visitors.h b/TAO/CIAO/tools/Assembly_Deployer/Assembly_Visitors.h
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+++ b/TAO/CIAO/tools/Assembly_Deployer/Assembly_Visitors.h
@@ -0,0 +1,135 @@
+// -*- C++ -*-
+
+//=============================================================================
+/**
+ *  @file    Assembly_Visitors.h
+ *
+ *  $Id$
+ *
+ *  This file contains implementations for various visitors that
+ *  traverse and process CIAO::Assembly_Spec.
+ *
+ *  @author Nanbor Wang <nanbor@cs.wustl.edu>
+ */
+//=============================================================================
+
+
+#ifndef CIAO_ASSEMBLY_VISITOR_H
+#define CIAO_ASSEMBLY_VISITOR_H
+#include /**/ "ace/pre.h"
+
+#include "ace/config-all.h"
+
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+# pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
+#include "CCM_DeploymentS.h"
+#include "ace/Hash_Map_Manager_T.h"
+#include "../XML_Helpers/Assembly_Spec.h"
+#include "Deployment_Configuration.h"
+
+namespace CIAO
+{
+  /**
+   * @typedef Assembly_Context
+   *
+   * This is a structure for collecting information of a running Assembly.
+   */
+  typedef struct _assembly_context
+  {
+    typedef ACE_Hash_Map_Manager_Ex<ACE_CString,
+                                    Components::CCMHome_var,
+                                    ACE_Hash<ACE_CString>,
+                                    ACE_Equal_To<ACE_CString>,
+                                    ACE_Null_Mutex> HOME_MAP;
+    HOME_MAP installed_homes_;
+
+    typedef ACE_Hash_Map_Manager_Ex<ACE_CString,
+                                    Components::CCMObject_var,
+                                    ACE_Hash<ACE_CString>,
+                                    ACE_Equal_To<ACE_CString>,
+                                    ACE_Null_Mutex> COMP_MAP;
+    COMP_MAP instantiated_components_;
+
+    typedef ACE_Unbounded_Queue<Components::Deployment::ComponentServer_var> SERVER_QUEUE;
+    SERVER_QUEUE component_servers_;
+  } Assembly_Context;
+
+  /**
+   * @class Assembly_Builder_Visitor
+   *
+   * @brief A visitor implementation that "build" up the application
+   * ACE_Hash_Map_Manager_Exby visiting nodes in an Assembly_Spec
+   */
+  class Assembly_Builder_Visitor : public CIAO::Assembly_Placement::Visitor
+  {
+  public:
+    /// Constructor
+    Assembly_Builder_Visitor (CORBA::ORB_ptr o,
+                              Assembly_Context &context,
+                              CIAO::ID_IMPL_MAP &idmap,
+                              Deployment_Configuration &config);
+
+    /// Destructor
+    virtual ~Assembly_Builder_Visitor (void);
+
+    virtual int visit_Container (Assembly_Placement::Container *c
+                                 ACE_ENV_ARG_DECL_WITH_DEFAULTS);
+
+    virtual int visit_hostcollocation (Assembly_Placement::hostcollocation *hc
+                                       ACE_ENV_ARG_DECL_WITH_DEFAULTS);
+
+    virtual int visit_processcollocation (Assembly_Placement::processcollocation *pc
+                                          ACE_ENV_ARG_DECL_WITH_DEFAULTS);
+
+    virtual int visit_homeplacement (Assembly_Placement::homeplacement *hp
+                                     ACE_ENV_ARG_DECL_WITH_DEFAULTS);
+
+    virtual int visit_componentinstantiation (Assembly_Placement::componentinstantiation *ci
+                                              ACE_ENV_ARG_DECL_WITH_DEFAULTS);
+
+    Components::Deployment::Container_ptr
+    get_current_container (void);
+
+  protected:
+    /// Registering a component using the info specified in @c i .
+    void register_component (Assembly_Placement::componentinstantiation::Register_Info *i,
+                             Components::CCMObject_ptr c
+                             ACE_ENV_ARG_DECL_WITH_DEFAULTS);
+
+    /// Current Component Server.
+    Components::Deployment::ComponentServer_var compserv_;
+
+    /// Current Container.  (This shouldn't be necessary because the
+    /// component server supposedly should be able to figure out if a
+    /// component home can be installed in the same container based on
+    /// its configvalue.  However, our component server don't do that
+    /// yet, so we just install all home in a process into one single
+    /// container.)
+    Components::Deployment::Container_var container_;
+
+    /// Current Component Home.  We only support keyless home
+    /// operations for now.
+    Components::KeylessCCMHome_var home_;
+
+    /// Keep a pointer to the managing ORB serving this servant.
+    CORBA::ORB_var orb_;
+
+    /// Context to build on.
+    Assembly_Context &context_;
+
+    /// Context to build on.
+    CIAO::ID_IMPL_MAP &impl_idref_map_;
+
+    /// Deployment Configuration Info.
+    Deployment_Configuration &deployment_config_;
+  };
+}
+
+#if defined (__ACE_INLINE__)
+# include "Assembly_Visitors.inl"
+#endif /* __ACE_INLINE__ */
+
+#include /**/ "ace/post.h"
+#endif /* CIAO_ASSEMBLY_VISITOR_H */