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+// -*- C++ -*-
+
+/**
+ * @file EC_Supplier_Filter_Builder.h
+ *
+ * $Id$
+ *
+ * @author Carlos O'Ryan (coryan@cs.wustl.edu)
+ *
+ * Based on previous work by Tim Harrison (harrison@cs.wustl.edu) and
+ * other members of the DOC group. More details can be found in:
+ *
+ * http://doc.ece.uci.edu/~coryan/EC/index.html
+ */
+
+#ifndef TAO_EC_SUPPLIER_FILTER_BUILDER_H
+#define TAO_EC_SUPPLIER_FILTER_BUILDER_H
+
+#include /**/ "ace/pre.h"
+
+#include "orbsvcs/RtecEventChannelAdminC.h"
+
+#include /**/ "orbsvcs/Event/event_serv_export.h"
+
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+# pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
+TAO_BEGIN_VERSIONED_NAMESPACE_DECL
+
+class TAO_EC_Supplier_Filter;
+class TAO_EC_ProxyPushConsumer;
+
+/**
+ * @class TAO_EC_Supplier_Filter_Builder
+ *
+ * @brief Abstract base class for the supplier filter builders.
+ *
+ * The creation of the right filter for each supplier controlled
+ * by a Supplier_Filter_Builder.
+ */
+class TAO_RTEvent_Serv_Export TAO_EC_Supplier_Filter_Builder
+{
+public:
+ /// Destructor...
+ virtual ~TAO_EC_Supplier_Filter_Builder (void);
+
+ /**
+ * Create the filter. The consumer is bound to the returned
+ * Supplier_Filter, it must be unbound upon destruction and/or
+ * disconnection.
+ */
+ virtual TAO_EC_Supplier_Filter*
+ create (RtecEventChannelAdmin::SupplierQOS& qos) = 0;
+
+ /// The user is returning the filter for destruction/recycling.
+ virtual void
+ destroy (TAO_EC_Supplier_Filter *filter) = 0;
+};
+
+TAO_END_VERSIONED_NAMESPACE_DECL
+
+// ****************************************************************
+
+#include /**/ "ace/post.h"
+
+#endif /* TAO_EC_FILTER_BUILDER_H */