Blob Column to display Picture

Hello,
i have crated a table name Product , and i kept one column type Blob to upload pics for product. using wizard i created form with report.
i can see the brows option on form but i can not see picture in report which is created durring wizard.
how can i show the picture in report ? can anyone help me.
Thanks,
Suhaib

Suhaib,
<li> Check if the image function is fetching the images correctly by opening the image Location(fetched by the procedure) in a new browser tab
It would be like, http//<your server>:<port>/<dad conf>/<schema>.<image fetch function>?<parameters >=
In Andy's application this would be
>http://apex.oracle.com/pls/otn/ATDSCHEMA.DISPLAY_IMAGE?inID=77
<li> Check the report column's display type and change it to standard report column.

Similar Messages

How to customize blob column text displayed in a report

Hi All,
I have a table with column File_name (varchar2) and file_content (blob).
Report generated by the APEX allows me to show report with two different column
File Name || File Content
aaaa Download (link)
bbbb Download (link)
I would like to show the report in such a way the File name column is hyperlinked to download the blob content.
I tried to change the link using the BLOB format mask, but seems it only takes up text value and not column name as #FIELD_NAME#
Any idea how to achieve this ?
I am using Application Express 3.1.2.00.02
Thanks
bala
Edited by: Balamurugan Natarajan on Jun 3, 2009 2:16 AM

I got this online:
create or replace PROCEDURE download_my_file_sp(p_file in number) AS
        v_mime VARCHAR2(48);
        v_length NUMBER;
        v_file_name VARCHAR2(2000);
        Lob_loc BLOB;
BEGIN
-- Assuming your application's numeric ID is 100, set g_flow_id to
--     that value, otherwise change the value as required.
--***APEX_APPLICATION.G_FLOW_ID := 100;
--***IF NOT wwv_flow_custom_auth_std.is_session_valid then
    -- display this message or a custom message.
--***htp.p('Unauthorized access - file will not be retrieved.');
    -- You can do whatever else you need to here to log the
    --     unauthorized access attempt, get the requestor's
    --     IP address, send email, etc.
--*** RETURN;
--***END IF;
        SELECT MIME_TYPE, BLOB_CONTENT, name,DBMS_LOB.GETLENGTH(blob_content)
                INTO v_mime,lob_loc,v_file_name,v_length
                FROM document_tb
                WHERE id = p_file;
              -- set up HTTP header
                    -- use an NVL around the mime type and
                    -- if it is a null set it to application/octect
                    -- application/octect may launch a download window from windows
                    owa_util.mime_header( nvl(v_mime,'application/octet'), FALSE );
                -- set the size so the browser knows how much to download
                htp.p('Content-length: ' || v_length);
                -- the filename will be used by the browser if the users does a save as
                htp.p('Content-Disposition: attachment; filename="'||replace(replace(substr(v_file_name,instr(v_file_name,'/')+1),chr(10),null),chr(13),null)|| '"');
                -- close the headers
                owa_util.http_header_close;
                -- download the BLOB
                wpg_docload.download_file( Lob_loc );
end download_my_file_sp;Change the link of the PK: Page 3, Item 1: P3_ID, Value: #ID#
create a branch on a different page: Branch to PL/SQL Procedure, Onload Before Header, and Branch Action: download_my_file_sp(:P3_ID)

How to view PDF files strored in a BLOB column

Hi all,
I want to display a PDF file, stored in a BLOB column, in a form or through a JavaBean.
But the problem is more complicated then that. I do not want to retrieve the PDF file in the application server that show it through a browser.
Actually, I do not want users to get the entire file, I just want them to see it or print it.
I want, in fact, to display a "stream" of bytes through Oracle Forms. Not a file.
This one, sounded to be a good solution, but actually not. When the file was too big (multiple pages), the application was blocked until the entire file was loaded. And when you try to print it, it wasn't printed right. The advantage of this solution is that it is open-source so we can add methods to connect to the DB, retrieve the content of the BLOB column and displays it without downloading the file.
Here is a good solution. Really good, files are loaded quickly, the rendering is really good and the file is printed perfectly (as it was printed from Adobe Acrobat). The disadvantage of this solution is that it is not open-source and is really expansive.
As you can see, both solutions uses PJC.
So any help, any idea to solve my problem will be highly appreciated.
Thanks to all of you,
Amine
PS : I am using F&R 11gR2

Not entirely. At least we came to the conclusion it doesn't make (much) sense to block the save option of PDFs if you want to allow printing them
Anyway; there is of course another possibilty: you could always write your own java bean PDF reader; there are plenty of java PDF libraries available:
Open Source PDF Libraries in Java
The easiest way would be to choose one which can open a PDF from a URL and render it; I would retrieve the image via mod_plsql using WPG_DOCLOAD and simply use the PDF library to render the PDF. No tempfiles anyway, and if you don't implement it there is also no save button.
cheers

How to insert a pdf or jpeg image into a blob column of a table

How to insert a pdf or jpeg image into a blob column of a table

Hi,
Try This
Loading an image into a BLOB column and displaying it via OAS
The steps are as follows:
Step 1.
Create a table to store the blobs:
create table blobs
( id varchar2(255),
blob_col blob
Step 2.
Create a logical directory in the database to the physical file system:
create or replace directory MY_FILES as 'c:\images';
Step 3.
Create a procedure to load the blobs from the file system using the logical
directory. The gif "aria.gif" must exist in c:\images.
create or replace procedure insert_img as
f_lob bfile;
b_lob blob;
begin
insert into blobs values ( 'MyGif', empty_blob() )
return blob_col into b_lob;
f_lob := bfilename( 'MY_FILES', 'aria.gif' );
dbms_lob.fileopen(f_lob, dbms_lob.file_readonly);
dbms_lob.loadfromfile( b_lob, f_lob, dbms_lob.getlength(f_lob) );
dbms_lob.fileclose(f_lob);
commit;
end;
Step 4.
Create a procedure that is called via Oracle Application Server to display the
image.
create or replace procedure get_img as
vblob blob;
buffer raw(32000);
buffer_size integer := 32000;
offset integer := 1;
length number;
begin
owa_util.mime_header('image/gif');
select blob_col into vblob from blobs where id = 'MyGif';
length := dbms_lob.getlength(vblob);
while offset < length loop
dbms_lob.read(vblob, buffer_size, offset, buffer);
htp.prn(utl_raw.cast_to_varchar2(buffer));
offset := offset + buffer_size;
end loop;
exception
when others then
htp.p(sqlerrm);
end;
Step 5.
Use the PL/SQL cartridge to call the get_img procedure
OR
Create that procedure as a function and invoke it within your PL/SQL code to
place the images appropriately on your HTML page via the PL/SQL toolkit.
from a html form
1. Create an HTML form where the image field will be <input type="file">. You also
need the file MIME type .
2. Create a procedure receiving the form parameters. The file field will be a Varchar2
parameter, because you receive the image path not the image itself.
3. Insert the image file into table using "Create directory NAME as IMAGE_PATH" and
then use "Insert into TABLE (consecutive, BLOB_OBJECT, MIME_OBJECT) values (sequence.nextval,
EMPTY_BLOB(), 'GIF' or 'JPEG') returning BLOB_OBJECT, consecutive into variable_blob,
variable_consecutive.
4. Load the file into table using:
dbms_lob.loadfromfile(variable_blob, variable_file_name, dbms_lob.getlength(variable_file_name));
dbms_lob.fileclose(variable_file_name);
commit.
Regards,
Simma........

How to display the content of a BLOB column in a ADF/BC pages ?

How to display the content of a BLOB column in a ADF/BC pages ?
There is some image in database table blog column. And we want to display image on the screeen.
There is some example about upload and dowload blog columns.
(steve not yet document example page etc...)
But We want to display blog picture in a image component...
is there any basic way to do it ?
Thanks a lot...

Ali,
You could just download the sample app... but... here is the servlet code from the demo (look at it just for technique - you'll obviously have to change it for your needs)...
John
package oracle.fodemo.storefront.servlet;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.servlet.*;
import javax.servlet.http.*;
import oracle.jbo.ApplicationModule;
import oracle.jbo.Key;
import oracle.jbo.Row;
import oracle.jbo.ViewObject;
import oracle.jbo.client.Configuration;
import oracle.jbo.domain.BlobDomain;
import oracle.jbo.domain.DBSequence;
import oracle.jbo.domain.Number;
import oracle.jbo.server.ViewObjectImpl;
public class ImageServlet
extends HttpServlet
private static final String CONTENT_TYPE =
    "image/jpg; charset=windows-1252";
public void init(ServletConfig config)
    throws ServletException
    super.init(config);
public void doGet(HttpServletRequest request,
                    HttpServletResponse response)
    throws ServletException, IOException
    response.setContentType(CONTENT_TYPE);
    response.setContentType(CONTENT_TYPE);
    String detailProductId = request.getParameter("detail");
    String thumbnailProductId = request.getParameter("thumbnail");
    boolean thumbnail = true;
    String productId = null;
    OutputStream os = response.getOutputStream();
    String amDef = "oracle.fodemo.storefront.store.service.StoreServiceAM";
    String config = "StoreServiceAMLocal";
    ApplicationModule am =
      Configuration.createRootApplicationModule(amDef, config);
    ViewObjectImpl vo =
      (ViewObjectImpl) am.findViewObject("ProductImages"); // get view object (the same as used in the table)
    if (detailProductId != null)
      productId = detailProductId;
      thumbnail = false;
    else
      productId = thumbnailProductId;
    vo.defineNamedWhereClauseParam("paramThumbnail", null, null);
    vo.defineNamedWhereClauseParam("paramProductId", null, null);
    vo.setWhereClause("DEFAULT_VIEW_FLAG = :paramThumbnail AND PRODUCT_ID = :paramProductId");
    vo.setNamedWhereClauseParam("paramThumbnail", (thumbnail? "Y": "N"));
    vo.setNamedWhereClauseParam("paramProductId", productId);
    vo.executeQuery();
    Row product = vo.first();
    BlobDomain image = (BlobDomain) product.getAttribute("Image");
    InputStream is = image.getInputStream();
    // copy blob to output
    byte[] buffer = new byte[10 * 1024];
    int nread;
    while ((nread = is.read(buffer)) != -1)
      os.write(buffer, 0, nread);
    os.close();
    vo.setWhereClause(null);
    vo.removeNamedWhereClauseParam("paramProductId");
    vo.removeNamedWhereClauseParam("paramThumbnail");
    Configuration.releaseRootApplicationModule(am, false);
}

Problem displaying Blob column as an image

Hi all,
Ik have created an attribute (as part of an Entity Object and a View object) on top of a blob column.
With JHeadstart I generated one insert group (display type fileUpload) and one query group (display type image).
I managed to upload (and store) pictures.
However when I query the pictures the folowing occurs:
1. when I scroll through the records the first time the picture is shown OK
2. the secod time when I scroll through the same dataset the picture is not shown...
3. when I restart the pageGroup, the pictures are shown..
Do you have any suggestions?

A fix has been found, see the thread at Why the image only show first time?? for details.
kind regards,
Sandra Muller
JHeadstart Team

How to display the content of a BLOB column in a JSP page?

Hi,
I've a db table with a Blob column which contains an image (".gif" file). I've created a UIX JSP page with the wizard, but I cannot display my image.
This is my code:
<%@ page errorPage="errorpage.jsp" contentType="text/html;charset=windows-1252"%>
<%@ taglib uri="/webapp/DataTags.tld" prefix="jbo" %>
<%@ taglib uri="http://xmlns.oracle.com/uix/ui" prefix="uix" %>
<%@ taglib uri="http://xmlns.oracle.com/uix/ui/bc4j" prefix="bc4juix" %>
<%-- Define Application Module and DataSource--%>
<jbo:ApplicationModule configname="PackageTest.PackageTestModule.PackageTestModuleLocal" id="app1" />
<jbo:DataSource id="ds1" appid="app1" viewobject="ProvaMediaView" rangesize="1" />
<%-- Main page contents go here --%>
<uix:contents>
<uix:form name="form1" method="POST">
<uix:labeledFieldLayout >
<jbo:AttributeIterate id="dsAttributes" datasource="ds1" hideattributes="UixShowHide">
<%if(dsAttributes.getName().compareTo("Image")==0){
%>
<bc4juix:LabelStyledText datasource="ds1" dataitem="<%=dsAttributes.getName()%>" />
<jbo:EmbedImage datasource="ds1" mediaattr="Image" />
<%}else{%>
<bc4juix:LabelStyledText datasource="ds1" dataitem="<%=dsAttributes.getName()%>" />
<bc4juix:InputRender datasource="ds1" dataitem="<%=dsAttributes.getName()%>" />
<%}%>
</jbo:AttributeIterate>
</uix:labeledFieldLayout>
<uix:formValue name="RowKey" value="<%= sRowKey%>" />
</uix:form>
</uix:contents>
and this is the error on running the page:
oracle.jbo.domain.BlobDomain
Exception Details
javax.servlet.jsp.JspException: oracle.jbo.domain.BlobDomain
     int oracle.ord.html.jsp.datatags.ShowEmbedImageTag.doStartTag()
     void Media_Edit._jspService(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     void oracle.jsp.runtime.HttpJsp.service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
     void oracle.jsp.runtimev2.JspPageTable.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, java.lang.String)
     void oracle.jsp.runtimev2.JspServlet.internalService(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     void oracle.jsp.runtimev2.JspServlet.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     void javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
     void com.evermind.server.http.ServletRequestDispatcher.invoke(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
     void com.evermind.server.http.ServletRequestDispatcher.forwardInternal(javax.servlet.ServletRequest, javax.servlet.http.HttpServletResponse)
     boolean com.evermind.server.http.HttpRequestHandler.processRequest(com.evermind.server.ApplicationServerThread, com.evermind.server.http.EvermindHttpServletRequest, com.evermind.server.http.EvermindHttpServletResponse, java.io.InputStream, java.io.OutputStream, boolean)
     void com.evermind.server.http.HttpRequestHandler.run(java.lang.Thread)
     void com.evermind.util.ThreadPoolThread.run()
How can I do?
Thanks in advance.

Hi,
I've a db table with a Blob column which contains an image (".gif" file). I've created a UIX JSP page with the wizard, but I cannot display my image.
This is my code:
<%@ page errorPage="errorpage.jsp" contentType="text/html;charset=windows-1252"%>
<%@ taglib uri="/webapp/DataTags.tld" prefix="jbo" %>
<%@ taglib uri="http://xmlns.oracle.com/uix/ui" prefix="uix" %>
<%@ taglib uri="http://xmlns.oracle.com/uix/ui/bc4j" prefix="bc4juix" %>
<%-- Define Application Module and DataSource--%>
<jbo:ApplicationModule configname="PackageTest.PackageTestModule.PackageTestModuleLocal" id="app1" />
<jbo:DataSource id="ds1" appid="app1" viewobject="ProvaMediaView" rangesize="1" />
<%-- Main page contents go here --%>
<uix:contents>
<uix:form name="form1" method="POST">
<uix:labeledFieldLayout >
<jbo:AttributeIterate id="dsAttributes" datasource="ds1" hideattributes="UixShowHide">
<%if(dsAttributes.getName().compareTo("Image")==0){
%>
<bc4juix:LabelStyledText datasource="ds1" dataitem="<%=dsAttributes.getName()%>" />
<jbo:EmbedImage datasource="ds1" mediaattr="Image" />
<%}else{%>
<bc4juix:LabelStyledText datasource="ds1" dataitem="<%=dsAttributes.getName()%>" />
<bc4juix:InputRender datasource="ds1" dataitem="<%=dsAttributes.getName()%>" />
<%}%>
</jbo:AttributeIterate>
</uix:labeledFieldLayout>
<uix:formValue name="RowKey" value="<%= sRowKey%>" />
</uix:form>
</uix:contents>
and this is the error on running the page:
oracle.jbo.domain.BlobDomain
Exception Details
javax.servlet.jsp.JspException: oracle.jbo.domain.BlobDomain
     int oracle.ord.html.jsp.datatags.ShowEmbedImageTag.doStartTag()
     void Media_Edit._jspService(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     void oracle.jsp.runtime.HttpJsp.service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
     void oracle.jsp.runtimev2.JspPageTable.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, java.lang.String)
     void oracle.jsp.runtimev2.JspServlet.internalService(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     void oracle.jsp.runtimev2.JspServlet.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     void javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
     void com.evermind.server.http.ServletRequestDispatcher.invoke(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
     void com.evermind.server.http.ServletRequestDispatcher.forwardInternal(javax.servlet.ServletRequest, javax.servlet.http.HttpServletResponse)
     boolean com.evermind.server.http.HttpRequestHandler.processRequest(com.evermind.server.ApplicationServerThread, com.evermind.server.http.EvermindHttpServletRequest, com.evermind.server.http.EvermindHttpServletResponse, java.io.InputStream, java.io.OutputStream, boolean)
     void com.evermind.server.http.HttpRequestHandler.run(java.lang.Thread)
     void com.evermind.util.ThreadPoolThread.run()
How can I do?
Thanks in advance.

Displaying images stored in blob columns

I've seen discussions on how to upload and download blob columns but I want to store a blob in the database and be able to display the blob (which is a jpg) as I would any other <img> on my web page. Instead of having to store the jpg on a file system somewhere, and use the data in the database to formulate a link to the image on the file share, I want to pull it right out of the blob. Does someone have a sample of how to do this? Can I do this?
Thanks

Laurence,
If you uploaded the image via the Application Builder, you can use an image tag like so:
<img src="#WORKSPACE_IMAGES#my_image.jpg" />If you followed the upload/download how to, you should be able to reference an image like this:
<img src="download_my_file?p_file=1232897645" />Where 1232897645 is the unique ID of the uploaded image. To make referencing images easier, you could write a version of the download_my_file procedure that takes in the name of the image as a parameter.
Sergio

Problem displaying PDF stored in BLOB column

Hello everyone.
I've been trying to follow this tutorial http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::p11_question_id:232814159006 on displaying PDFs stored in BLOB columns. This is being performed on Apex 4.2, with my DB running 11g. I've got my procedure, which I'll post below:
create or replace procedure "PDF" (p_id IN gvo_documents.doc_id%type)
is
    l_lob    blob;
    l_amt    number default 30;
    l_off   number default 1;
    l_raw   raw(4096);
begin
    select contents into l_lob
        from gvo_documents
         where doc_id = p_id;
-- make sure to change this for your type!
    owa_util.mime_header( 'application/pdf' );
    begin
        loop
          dbms_lob.read( l_lob, l_amt, l_off, l_raw );
          htp.prn( utl_raw.cast_to_varchar2( l_raw ) );
          l_off := l_off+l_amt;
          l_amt := 4096;
    end loop;
        exception
           when no_data_found then
              NULL;
        end;
end;
I am trying to run this through a PL/SQL dynamic region and while I don't receive any error's, the content displayed is a huge mess of garbled text and odd characters. I've tried to run this procedure on numerous other document types, including word files and jpeg images, all with the necessary changes in my procedure, and regardless of what I use, I still get a large mess of strange characters. Does anyone have any information or ideas about why this is happening?

If I understand correctly, your requirements needs to be broken down into two problems:
1) click link that pops up a window displaying a new APEX page
2) an APEX page the displays the document, not downloads it.
I haven't done #1 (yet).
However, you may be able to generate a URL that points to the new page as part of the SELECT statement for the Report.
This has a related question, but no answer yet:
open pdf in popup browser window
The key is target="_blank" for the anchor tag.
To generate the URL, you should use the APEX_UTIL.prepare_URL() function.
If that doesn't work, a Dynamic Action that does some magical JavaScript stuff may be needed.
For #2, I lost the URL that showed how to display a PDF as part of a "form" page.
From what I remember:
Start with a blank page with one blank HTML region (all the Items go in the HTML region)
Add an Item for the PK/Doc_ID
part I forgot Create a Data Manipulation Process
- Automated Row Fetch
- On Load - After Header
- (stuff for your table/view)
part I forgot Create an (I believe) "File Browser" item type. For Settings:
- Storage Type "BLOB column specified in Item Source" (and place the column name of the BLOB there)
- MIME Type Column: (column name) -- since you have multiple types, this is a MUST HAVE
- Filename Column: (column name) -- I highly recommend you have this.
- Content Disposition == INLINE <-- this is the kicker
Also, you will need a Browser Plugin for each of the MIME Types (otherwise, the browser may try to 'download' the file)
Browsers can handle Image types internally. Adobe's plugin can handle PDFs. I don't know about Word/Excel.
Again, I don't remember the exact details, but that should cover most of it.
MK

Display PDF on the browser from BLOB column

Hi All,
I have BLOB column in the table where we are storing PDFs.
I want to display PDF within the browser ( not as a download option) from that BLOB column, like clicking on the "Print" link.
Please let me know if anyone has any suggestion.
-Smith

Create this DB procedure:
procedure show_webdoc(io_blob    in out nocopy blob
                     ,i_mimetype in varchar2
                     ,i_filename in varchar2)
is
begin
   if dbms_lob.getlength(io_blob) >0 then
      owa_util.mime_header(nvl(i_mimetype,'application/octet'),false);
      htp.p('Content-length: ' || dbms_lob.getlength(io_blob));
      htp.p('Content-Disposition: inline; filename="'||i_filename|| '"');
      owa_util.http_header_close;
      wpg_docload.download_file(io_blob);
   end if;
end;Get the blob and give it as input to this procedure. For a pdf the mime type will be application/pdf.

Displaying the image stored in Blob column

Hi all,
I'm trying to print the report with an image. I've stored the image in a Blob column and the format of the image is Jpg.
I'm using the Reports 10g(10.1.2.0.2). When I'm trying to print the report, I'm getting an error Rep-62203. I want to know whether there are any settings which i need to set to display the image item. I mean to say that are there any registry settings.
Regards,
Alok Dubey
Edited by: Alok Dubey on Dec 1, 2008 12:55 PM

Hi all,
I'm trying to print the report with an image. I've stored the image in a Blob column and the format of the image is Jpg.
I'm using the Reports 10g(10.1.2.0.2). When I'm trying to print the report, I'm getting an error Rep-62203. I want to know whether there are any settings which i need to set to display the image item. I mean to say that are there any registry settings.
Regards,
Alok Dubey
Edited by: Alok Dubey on Dec 1, 2008 12:55 PM

How to display binary file saved in BLOB column in Discoverer PLUS /VIEWER

HI, Friends,
I tried to display the binary file saved in the database in BLOB column with the *.doc or *.xls fomats, but it seemed not work at all. I can display them in discoverer DESKTOP, but not the web version PLUS or VIEWER. MY Discoverer PLUS/VIEWER version is 9.0.4.45.02 and the database is 9.2.0.4. Are there any special setting/configuration in somewhere (Discoverer administration/Applicaiton server/PLUS/VIEWER?)
Any help /information will be greatly appreciated.
Thanks a lot.

Hi,
Sorry but this feature is not available in the web version of 9.0.4.45. You will have to write your own mod_plsql function to download the file.
Rod West

Apex 4.0 display image item :BLOB column returned by SQL statement

Hello
I'm creating an display image item in apex 4.0. The source is a BLOB column returned by SQL statement.
When I'm issuing an sql statement like this:
   select lado.blob_content
   from   large_documents      lado
   ,        large_doc_headers    ladh
   where lado.ladh_nr = ladh.nr
   more criteriait works fine.
When I create a function inside a package with the same query (in a cursor)
function get_image(some parameters in) return blob
Following in apex by:
select get_image(some parameters) from dualI get a
ORA-06502: PL/SQL: numeric or value error: character string buffer too smallAnybody any idea why this does not work?
Regards Erik

Hi Eric,
the environment assumes varchar2-output by default, which will be limited to 32767 characters and may have problems with binary formats. You could define a blob-variable to select the value into.
DECLARE
l_blob BLOB;
BEGIN
SELECT get_image(some parameters)
    INTO l_blob
    FROM dual;
END;
/If you expect the BLOB-Content to be text (you should consider CLOB then), you may use UTL_RAW.CAST_TO_VARCHAR2 to convert the content. If your object is larger than the maximum varchar2 size, or you want to convert BLOB to CLOB, you might be interested in some converter like described here: {message:id=559749}
Hope this is what you were searching for.
-Udo

Display picture in blob on report with GET_BLOB_FILE_SRC

Hi Guys !
I want to display picture contains in blob on my report. The function GET_BLOB_FILE_SRC can do that but I must have an File browse item to use them.
The only other way I know is to create my own function that return my image. Like that :
create or replace
PROCEDURE "GET_FILE" (p in number) as
v_mime varchar2(255);
v_length number;
v_file_name varchar2(2000);
Lob_loc BLOB;
BEGIN
select mime_type, blob_content, name,dbms_lob.getlength(blob_content)
into v_mime,lob_loc,v_file_name,v_length
from file
where id = p;
-- set up HTTP header
-- use an NVL around the mime type and
-- if it is a null set it to application/octect
-- application/octect may launch a download window from windows
owa_util.mime_header( nvl(v_mime,'application/octet'), FALSE );
-- set the size so the browser knows how much to download
htp.p('Content-length: ' || v_length);
-- the filename will be used by the browser if the users does a save as
htp.p('Expires: ' || to_char(sysdate + 1/24,'FMDy, DD Month YYYY HH24:MI:SS') || ' GMT');
htp.p('Content-Disposition: attachment; filename="' ||
substr(v_file_name,instr(v_file_name,'/')+1)|| '"');
-- close the headers
owa_util.http_header_close;
-- download the BLOB
wpg_docload.download_file( Lob_loc );
end adu;
The only benefit to use GET_BLOB_FILE_SRC is for specify format of my image ?
Sylvain Michaud

See +{message:id=10172227}+

Display a PDF from a BLOB Column on a page.

Hi Folks.
I have PDFs stored in BLOB columns in the database.
Is there a way to display these to the APEX user on the page at runtime?
Any pointers appreciated.
Meantime I'm going to experiment.
Cheers
Dogfighter.

I suppose this depends really on what you want.
You have at least two choices.
1) Allow the user to download the pdf and then they get the option to save it or open it in a new window
2) You can also get them to open it. You can open it in a new window by adding "_blank"
in the target.
The sample application has procedures download_my_file and custom_image_display which will show you how to achieve this.
The only other way you could possibly do it is open it as a plugin. Thats way beyond my knowledge, but I'm sure someone else will chip in.

Blob Column to display Picture

Similar Messages

Maybe you are looking for