Blob + ADF BC + JSF

Question

Hi ..
I want to show Image and insert record to table that have Blob Field on JSF page
Create table ImgTable (
Id Number primarykey,
Img Blob )
i am using ADF BC
best regards

Answer 1

This is my solusion for adf faces table with blob as image (maybe wrong, but working):
- create a view object with BlobDomain
- create an ADF Table from the view object
- add a new column with outputText, set its Escape property to false, set Value property to: <img src=imgservlet?imgid=#{row.Id} />
where imgservlet is a servlet returning image data and row.Id is a primary key
- imgservlet doGet looks like:
response.setContentType("image/jpeg");
String imgid = request.getParameter("imgid"); // imgid is parameter sent to servlet
OutputStream os=response.getOutputStream();
String ams="temp.model.ImgsModule"; // get application module
String cfs="ImgsModuleLocal";
ApplicationModule am=Configuration.createRootApplicationModule(ams,cfs);
ViewObject vo=am.findViewObject("Imgs"); // get view object (the same as used in the table)
Row rw=vo.getRow(new Key(new Object[]{imgid})); // get row with imgid PK (current)
BlobDomain blob = (BlobDomain)rw.getAttribute("Imgb"); // get blob
InputStream is=blob.getInputStream();
// copy blob to output
byte[] buf=new byte[BUFFER_SIZE];
int cnt;
while((cnt=is.read(buf))!=-1)
os.write(buf,0,cnt);
os.close();
Configuration.releaseRootApplicationModule(am,false);
You will see blob image instead of outputText.
Rado