Using the Web Access 7.1 Text Extraction Method in Web Access 7.2.x.

November 13, 2006 | KB: 1011692
Web Access 7.2, Web Access 7.2.1

Summary

Web Access 7.1 introduced the ability to retrieve text from certain types of electronic files, making them searchable. This feature retrieved text through the file type's preferred application. As such, this feature was only supported for certain file types (primarily Microsoft Office files) and it required that the associated application be installed on your web server.

Web Access 7.2 introduced the ability to retrieve text from electronic files through the use of third-party IFilters. This allows Web Access to support retrieving text from a wider selection of electronic file types.

More Information

By default, Web Access 7.2.x uses IFilters for retrieving text from electronic files. You can modify this default behavior so that Web Access will use the legacy Web Access 7.1 method of retrieving text from Microsoft Office documents through the associated Office application. Modify the "IFilterFlags" string stored in the "HKEY_LOCAL_MACHINE\SOFTWARE\Laserfiche\Client\Profile\Options" registry key. The default value for Web Access 7.2.x is 2.

To modify the IFilterFlags registry value

  1. Click Start and then click Run.
  2. Type the following and then click OK to load the Windows Registry Editor.

    regedt32

  3. Expand HKEY_LOCAL_MACHINE.
  4. Expand SOFTWARE.
  5. Expand Laserfiche.
  6. Expand Client.
  7. Expand Profile.
  8. Select Options.
  9. Double-click the IFilterFlags string value and set it to the desired value. See the following table for valid values and the resulting change in behavior.
Value Office applications installed (.doc, .xls, .ppt) Office applications not installed (.doc, .xls, .ppt) .wpd and .msg files (application installed, IFilter not installed) .wpd and .msg files (IFilter installed) All other file types
0 text retrieval through the application IFilter text retrieval through the application IFilter IFilter
1 text retrieval through the application IFilter 'Null' IFilter 'Null' IFilter 'Null' IFilter
2 (Web Access default) IFilter IFilter text retrieval through the application IFilter IFilter
3 IFilter IFilter 'Null' IFilter 'Null' IFilter 'Null' IFilter

A 'Null' IFilter does not retrieve searchable text. It retrieves system properties for that file.

Related Links

Please see the following web pages for a list of freely available IFilters:

http://addins.msn.com/addins_category_desktop.aspx
http://channel9.msdn.com/wiki/default.aspx/Channel9.DesktopSearchIFilters