How to get blob image width with ordimage?

Question

Hello,
I have trouble getting image width with ordimage. I have quite the same program for processing images as here: http://spendolini.blogspot.com/2005/10/manipulating-images-with-database.html
so I have declared image files as BLOB files. How can I get the width for the them?
There is a sample from ordimage reference:
DECLARE
image ORDSYS.ORDImage;
width INTEGER;
BEGIN
SELECT p.product_photo INTO image FROM pm.online_media p
WHERE p.product_id = 3515;
-- Get the image width:
width := image.getWidth();
DBMS_OUTPUT.PUT_LINE('Width is ' || width);
COMMIT;
END;
the ORDSYS.ORDIMAGE is used instead of BLOB here. when i do the same then i can't select BLOB content into the ORDSYS.ORDIMAGE variable. And otherwise I can't use the getWidth with the BLOB variable.
Can anybody help please?

Answer 1

Hi,
the column blob_content is not suitable for storing into v_image2 because variable v_image2 is of type ORDSYS.ORDIMAGE and the column is BLOB.
I used the following method instead:
declare
image blob;
attributes clob;
img_mimeType varchar2(32);
img_width integer;
img_height integer;
img_contentLength integer;
fileFormat varchar2(32);
contentFormat varchar2(32);
compressionFormat varchar2(32);
begin
DBMS_LOB.CREATETEMPORARY(attributes, TRUE, DBMS_LOB.CALL);
select img
into image
from image_repository
where id = 0;
ORDSYS.ORDImage.getProperties(image,
attributes,
img_mimeType,
img_width,
img_height,
fileFormat,
compressionFormat,
contentFormat,
img_contentLength);
dbms_output.put_line(img_mimeType);
dbms_output.put_line(img_width);
dbms_output.put_line(img_height);
dbms_output.put_line(fileFormat);
dbms_output.put_line(compressionFormat);
dbms_output.put_line(contentFormat);
dbms_output.put_line(img_contentLength);
DBMS_LOB.FREETEMPORARY(attributes);
end;
try adapting this code and think about the possibility of "caching" image properties, because it takes some time to retrieve them every time.
Bye,
Flavio
http://oraclequirks.blogspot.com/search/label/Apex