How to change image in APEX

Question

Hi, Guys:
I am struggling to display multiple images one page by clicking button. I implement an PL/SQL stored procedure as follows:
CREATE OR REPLACE PROCEDURE Sor_Display_Current_Image(p_n_Offender_id IN NUMBER, p_n_image_Count in number) AS
v_mime_type VARCHAR2(48);
v_length NUMBER;
v_name VARCHAR2(2000);
v_image BLOB;
v_counter number:=0;
cursor cur_All_Images_of_Offender is
SELECT 'IMAGE/JPEG' mime_type, dbms_lob.getlength(image) as image_length, image
FROM sor_image
WHERE offender_id = p_n_Offender_id;
rec_Image_of_Offender cur_All_Images_of_Offender%ROWTYPE;
BEGIN
open cur_All_Images_of_Offender;
loop
fetch cur_All_Images_of_Offender into rec_Image_of_Offender;
v_counter:=v_counter+1;
if (v_counter=p_n_image_Count) then
owa_util.mime_header(nvl(rec_Image_of_Offender.mime_type, 'application/octet'), FALSE);
htp.p('Content-length: '||rec_Image_of_Offender.image_length);
owa_util.http_header_close;
wpg_docload.download_file (rec_Image_of_Offender.image);
end if;
exit when ((cur_All_Images_of_Offender%NOTFOUND) or (v_counter>=p_n_image_Count));
end loop;
close cur_All_Images_of_Offender;
END Sor_Display_Current_Image;
and I set up a report region in the page with such a query:
select max(OFFENDER_ID) OFFENDER_ID, 'PHOTO' from sor_image where offender_id = 1
there are many offenders, but i just try 1.
and I set up the column of photo as
<img src="#OWNER#.SOR_DISPLAY_IMAGE?P_N_OFFENDER_ID=#OFFENDER_ID#, p_n_image_Count=2" width="75" height="75">
Here I just tried to display the second image of this guy.
I cannot display image in report, Could anyone give me an example about it?
Thanks a lot!
Edited by: lxiscas on Jul 3, 2012 2:45 PM

Answer 1

I want to change the displayed image of the same guy (identified by Offender_id) by clicking button (Next picture), all of images are stored in sor_image table (one offender may have multiple images). This table is defined as follows:
CREATE TABLE "SORS"."SOR_IMAGE"
"IMAGE_ID" NUMBER(10,0),
"OFFENDER_ID" NUMBER(10,0) NOT NULL ENABLE,
"IMAGE" BLOB CONSTRAINT "SOR_IMAGE" NOT NULL ENABLE,
"THUMBNAIL" BLOB,
"POLICE_VALIDATED" DATE,
"ADMIN_VALIDATED" DATE,
"ENTRY_DATE" DATE NOT NULL ENABLE,
"ENTRY_USER" VARCHAR2(30 BYTE) NOT NULL ENABLE,
"ADMIN_VALID_USER" VARCHAR2(30 BYTE),
"NCIC_VERIFY_DATE" DATE,
"NCIC_VERIFY_USER" VARCHAR2(30 BYTE),
"MIME_TYPE" VARCHAR2(50 BYTE),
CONSTRAINT "SOR_IMAGE_PK" PRIMARY KEY ("IMAGE_ID") USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE(INITIAL 1048576 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT) TABLESPACE "SOR" ENABLE,
CONSTRAINT "SOR_IMAGE_FK" FOREIGN KEY ("OFFENDER_ID") REFERENCES "SORS"."SOR_OFFENDER" ("OFFENDER_ID") ON
DELETE CASCADE ENABLE
Thanks.
Sam