undoing accidental deletion

1 files changed, 74 insertions, 0 deletions

diff --git a/ACE/examples/Web_Crawler/URL_Visitor_Factory.h b/ACE/examples/Web_Crawler/URL_Visitor_Factory.h
new file mode 100644
index 00000000000..9f484afe9f0
--- /dev/null
+++ b/ACE/examples/Web_Crawler/URL_Visitor_Factory.h
@@ -0,0 +1,74 @@
+/* -*- C++ -*- */
+// $Id$
+
+// ============================================================================
+//
+// = LIBRARY
+//    examples/Web_Crawler
+//
+// = FILENAME
+//    URL_Visitor_Factory.h
+//
+// = AUTHOR
+//    Douglas C. Schmidt <schmidt@cs.wustl.edu>
+//
+// ============================================================================
+
+#ifndef _URL_VISITOR_FACTORY_H
+#define _URL_VISITOR_FACTORY_H
+
+#include "URL_Visitor.h"
+#include "Command_Processor.h"
+
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+#pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
+class URL_Visitor_Factory
+{
+  // = TITLE
+  //   Abstract base class that creates URL visitors.
+  //
+  // = DESCRIPTION
+  //   Subclasses define each of the Factory Methods to
+  //   make the right objects, which all "vary" together.
+public:
+
+  /// Destructor.
+  virtual ~URL_Visitor_Factory (void);
+
+  virtual URL_Visitor *make_visitor (void) = 0;
+  // Factory Method that makes the appropriate type of <URL_Visitor>.
+
+  virtual Command_Processor *make_command_processor (void) = 0;
+  // Factory Method that makes the appropriate type of
+  // <Command_Processor>.
+};
+
+class URL_Validation_Visitor_Factory : public URL_Visitor_Factory
+{
+  // = TITLE
+  //   Create a URL visitor that validates URL links.
+public:
+  virtual URL_Visitor *make_visitor (void);
+  // Factory Method that makes a <URL_Validation_Visitor>.
+
+  virtual Command_Processor *make_command_processor (void);
+  // Factory Method that makes a <FIFO_Command_Processor>.
+
+
+};
+
+class URL_Download_Visitor_Factory : public URL_Visitor_Factory
+{
+  // = TITLE
+  //   Create a URL visitor that downloads URL links.
+public:
+  virtual URL_Visitor *make_visitor (void);
+  // Factory Method that makes a <URL_Download_Visitor>.
+
+  virtual Command_Processor *make_command_processor (void);
+  // Factory Method that makes a <FIFO_Command_Processor>.
+};
+
+#endif /* _URL_VISITOR_FACTORY_H */