Image Field and Blob Type

Question

Hi!
I´m working on form that will works lika a image database.
In my table I store the imagens in a blob type column.
In my form, I use a Image Field to display the imagem from database.
It works.
Now I want to generate a md5 hash for the image file, so I createa function that receive a blob variable
and calculates the md5 hash.
That works too.
The problem is that I want to get the hash at runtime, right after the file is chosen.
So I did this:
wfilename := WEBUTIL_FILE.FILE_OPEN_DIALOG (wdirname, NULL, file_types_variable);
wmd5    := my_functions_package.md5(my_file => :data_block.image_field);
When I try to compile, I get the error: Bad bind variable 'data_block.image_field'
I guess the forms doesn´t see the image_field as a blob even if it is.
Some one know how can I work arround this? To get the image_field as blob (It already is at database).
Forms [32 Bit] Version 9.0.4.0.19 (Production)
Oracle Database 10g Release 10.2.0.3.0 - 64bit Production
Thanks.

Answer 1

hi
try something like this.
declare
      f varchar2(100);
begin
     f := webutil_file.file_open_dialog();
     if f is not null then
          :block.item := f;
          end if;
     end;or try the following code.
declare
l_file_name varchar2(383);
begin
l_file_name := webutil_file.file_open_dialog( );
if
  l_file_name is not null
then
  if
    :block.rowid is not null
  then
    create_record;
  end if;
  client_image.read_image_file ( l_file_name, substr ( l_file_name, instr ( l_file_name , -1 ) ), 'block.item' );
end if;
end;sarah
Edited by: QGIRCO on Jan 20, 2010 8:51 AM