Software Execution Path

General HTTP Request

The following path is taken during each HTTP request:

1. URL is rewritten by SobekCM_URL_Rewriter
2. New SobekCM_Page_Globals object constructed
3. Application state is built or validated
4. Request is analyzed and SobekCM_Navigation_Object is created
5. User check performed or robot filtering performed
6. SobekCM_Assistant used to retrieve any data needed for the current mode/submode
7. SobekCM_Page_Global creates the appropriate writer for the request
   • dataset_writer
   • html_echo_writer (for echoing static pages for robots)
   • html_writer
   • json_writer
   • oai_writer
   • xml_writer
8. If this is a html request, the html writer generates the appropriate subwriter
   • collection_html_subwriter
   • contact_html_subwriter (for echoing static pages for robots)
   • error_html_subwriter
   • internal_html_subwriter
   • item_html_subwriter
   • legacy_url_html_subwriter
   • my_sobek_html_subwriter
   • preferences_html_subwriter
   • print_item_html_subwriter
   • public_folder_html_subwriter
   • result_dataset_html_subwriter (also employed by some other subwriters)
   • simple_text_html_subwriter
   • statistics_html_subwriter

Additional Viwer Objects

In addition to this process, several of the subwriters employ additional viewer objects for rendering specific submodes.

• The collection_html_subwriter employs collection viewers
  • Admin_CollectionViewer
  • Advanced_Search_CollectionViewer
  • Basic_Serach_CollectionViewer
  • DataSet_Browse_Info_CollectionViewer
  • dLOC_Search_CollectionViewer
  • Full_Text_Search_CollectionViewer
  • Map_Browse_CollectionViewer
  • Map_Search_CollectionViewer
  • Metadata_Browse_CollectionViewer
  • Newspaper_Search_CollectionViewer
  • No_Search_CollectionViewer
  • Rotating_Highlight_Search_CollectionViewer
  • Static_Browse_Info_CollectionViewer
• The item_html_subwriter employs item viewers
  • Checked_Out_ItemViewer
  • Citation_ItemViewer
  • Download_ItemViewer
  • EAD_Container_List_ItemViewer
  • EAD_Description_ItemViewer
  • Feature_ItemViewer
  • Flash_ItemViewer
  • GnuBooks_PageTurner_ItemViewer
  • Google_Map_ItemViewer
  • HTML_ItemViewer
  • HTML_Map_ItemViewer
  • JP2_ItemViewer
  • JPEG_ItemViewer
  • MultiVolumes_ItemViewer
  • PDF_ItemViewer
  • Related_Images_ItemViewer
  • Restricted_ItemViewer
  • Street_ItemViewer
  • Text_ItemViewer
  • TOC_ItemViewer
• Likewise, the my_sobek_subwriter utliizes mySobek viewers
• Likewise, the result_dataset_html_subwriter utliizes result viewers

Related Resources

• Code statistics

  This has some basic statistical information for each main library employed by the application

• Code architecture (MSDN style)

  This has remarks for each namespace, object, property, and method used by the SobekCM digital library.