Reference to HTP.P

Hello,
Where can I find some detailed description of HTP.P ? I looked at "PL/SQL Packages and Types Reference", saw an example using HTP.P but not any details on the function itself.
Thanks,
Arie.

Hello Ravikanth,
Thanks on your reply. Unfortunately, your link is to the entire HTP/HTF packages documentation. I already looked there, but didn't find any specific reference to HTP.P (although I agree this is the natural place to look )
Any other references out there?
Thanks,
Arie.

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v_dummy number;
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How to get full path using HTP.PRINT(' "input type ="file") ....

Hello everybody,
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PROCEDURE upload(appno in varchar2,wsct in varchar2) AS
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Edited by: dtabed on Mar 30, 2011 1:02 AM

Do not understand the problem.
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If the CGI procedure that receives the form is also a PL/SQL web enabled procedure, that the uploaded file will be placed in the documents table (as defined in the DAD alias) by mod_plsql, prior to the web enabled procedure being called. The documents table will contain the Mime type, file name, file contents and other details.

Reference images in stored procedures

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...would do it.
hope this helps,
raj

Trouble calling htp in a web service procedure

I have a procedure that I was calling directly within an APEX application that allowed the user to download XML files, as follows:
PROCEDURE download_my_file (
p_resid IN VARCHAR2
, p_filename VARCHAR2
, p_filter_str IN VARCHAR2 DEFAULT NULL
AS
v_mime VARCHAR2 (48) := NULL;
v_length NUMBER;
v_file_name VARCHAR2 (2000);
v_clob CLOB;
v_buf VARCHAR2 (32000);
v_amt NUMBER := 4000;
v_pos NUMBER := 1;
BEGIN
IF p_filter_str IS NULL
THEN
SELECT EXTRACT (VALUE (r), '/*').getclobval ()
, DBMS_LOB.getlength (EXTRACT (VALUE (r), '/*').getclobval ())
INTO v_clob
, v_length
FROM TABLE (XMLSEQUENCE ((SELECT xdburitype (any_path).getxml ()
FROM resource_view
WHERE resid = p_resid))) r;
ELSE
v_clob:= repos_datasets.dyn_dset_licensed_location_xml(p_filter_str=>p_filter_str);
v_length:=DBMS_LOB.getlength (v_clob);
END IF;
-- set up HTTP header
-- if it is a null set it to application/octect
-- application/octect may launch a download window from windows
OWA_UTIL.mime_header ('text/xml', FALSE);
HTP.p ('Content-length: ' || v_length);
HTP.p ('Content-Disposition: attachment; filename="' || NVL(p_filename,'user_query.xml') || '"');
OWA_UTIL.http_header_close;
BEGIN
v_pos := 1;
LOOP
DBMS_LOB.READ (v_clob
, v_amt
, v_pos
, v_buf
v_pos := v_pos + v_amt;
HTP.prn (v_buf);
END LOOP;
EXCEPTION
WHEN NO_DATA_FOUND
THEN
NULL;
END;
END download_my_file;
The procedure works perfectly when a process calls the procedure directly from the database, however, I now have a requirement whereby this download facility needs to be accessed through a web-service: merely creating a web-service for the procedure and running it through a page process returns a 'ORA-06502: PL/SQL: numeric or value error' message. I assumed as APEX is a web environment that the htp package functions would use the session that APEX had started but obviously they are not.
How would I go about manually creating a session (I presume that's what's required) that would support the htp calls and allow the user to download the files exactly as they could with a direct call to the database procedure? I know it involves some initialization using the OWA package but this is alien territory for me, can anyone help at all?

Has anyone come across a similar scenario? There are plenty examples of calling web-enabled procedures directly from APEX but I must call such a procedure through a web-service reference. Failing anyone having a similar problem, could someone explain to me how the Common Gateway interface variables are set when an APEX application calls a web enabled procedure?
I've included the code for the procedure I'm trying to run which I have altered to include CGI environment parameters: I'm getting these parameters by calling owa_util.get_cgi_env in the calling APEX application and passing the individual values to the procedure through the web service reference. I chose those variables I thought would tell the procedure where to return the HTML to but I'm just getting a blank page.
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PROCEDURE download_my_file (
p_resid IN VARCHAR2
, p_filename VARCHAR2
, p_filter_str IN VARCHAR2 DEFAULT 'sepa_region = ''North'''
,p_SERVER_PORT VARCHAR2
,p_SERVER_NAME VARCHAR2
,p_QUERY_STRING VARCHAR2
,p_HTTP_USER_AGENT VARCHAR2
,p_HTTP_HOST VARCHAR2
,p_HTTP_REFERER VARCHAR2
,p_DAD_NAME VARCHAR2
,p_REQUEST_CHARSET VARCHAR2
,p_HTTP_COOKIE VARCHAR2
AS
v_mime VARCHAR2 (48) := NULL;
v_length NUMBER;
v_file_name VARCHAR2 (2000);
v_clob CLOB;
v_buf VARCHAR2 (32000);
v_amt NUMBER := 4000;
v_pos NUMBER := 1;
namelist OWA.vc_arr;
valuelist OWA.vc_arr;
htpbuffer HTP.htbuf_arr;
bufrows INTEGER := 99999999;
rc INTEGER;
BEGIN
IF p_filter_str IS NULL
THEN
SELECT EXTRACT (VALUE (r), '/*').getclobval ()
, DBMS_LOB.getlength (EXTRACT (VALUE (r), '/*').getclobval ())
INTO v_clob
, v_length
FROM TABLE (XMLSEQUENCE ((SELECT xdburitype (any_path).getxml ()
FROM resource_view
WHERE resid = p_resid))) r;
ELSE
v_clob:= repos_datasets.dyn_dset_licensed_location_xml(p_filter_str=>p_filter_str);
v_length:=DBMS_LOB.getlength (v_clob);
END IF;
namelist (1) := 'SERVER_PORT';
namelist (2) := 'SERVER_NAME';
namelist (3) := 'QUERY_STRING';
namelist (4) := 'HTTP_USER_AGENT';
namelist (5) := 'HTTP_HOST';
namelist (6) := 'HTTP_REFERER';
namelist (7) := 'DAD_NAME';
namelist (8) := 'REQUEST_CHARSET';
namelist (9) := 'HTTP_COOKIE';
valuelist (1) := p_SERVER_PORT;
valuelist (2) := p_SERVER_NAME;
valuelist (3) := p_QUERY_STRING;
valuelist (4) := p_HTTP_USER_AGENT;
valuelist (5) := p_HTTP_HOST;
valuelist (6) := p_HTTP_REFERER;
valuelist (7) := p_DAD_NAME;
valuelist (8) := p_REQUEST_CHARSET;
valuelist (9) := p_HTTP_COOKIE;
-- initiliase OWA and configure a basic CGI environment
DBMS_SESSION.reset_package; reset PL/SQL PGA maintaining package state
rc := OWA.initialize;
OWA.init_cgi_env (9
, namelist
, valuelist
htp.showpage ();
-- 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 ('text/xml', FALSE);
HTP.p ('Content-length: ' || v_length);
HTP.p ('Content-Disposition: attachment; filename="' || NVL(p_filename,'user_query.xml') || '"');
OWA_UTIL.http_header_close;
owa_util.print_cgi_env;
--wpg_docload.download_file( v_clob );
BEGIN
v_pos := 1;
LOOP
DBMS_LOB.READ (v_clob
, v_amt
, v_pos
, v_buf
v_pos := v_pos + v_amt;
HTP.prn (v_buf);
END LOOP;
EXCEPTION
WHEN NO_DATA_FOUND
THEN
NULL;
END;
Message was edited by:
user592383

Htp.p ability to find and replace

Is it possible, in a procedure to use htp.p() to write data, and then a few lines later remove it?
For example:
begin
htp.p(‘This is a test. [junk] This is only a test’);
- - - - - do something here so that [junk] would not be pushed to the browser
end;
My purpose for this is to create a <query> tag that I’ll use in psp pages. So I’ll be able to do this in a psp page:
<query name=”q1”>
select col from table where 1 = 1
<% if true then %>
and col = <%= bind(‘number’, 1) %>
<% end if %>
</query>
<%= materialize_query(‘q1’) %>
<table>
<% for z in (select * from q1) loop %>
<tr><td><%= z.col %></td></tr>
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Edited by: brian.mcginity on Feb 20, 2010 7:49 AM
Edited by: brian.mcginity on Feb 20, 2010 7:50 AM
making code readable

This is the direction I'm going here:
CREATE OR REPLACE package custom_tag is
buf clob;
inside boolean := false;
procedure savecontent(s boolean default false, e boolean default false);
procedure getContent;
end;
CREATE OR REPLACE package body custom_tag as
procedure savecontent(s boolean default false, e boolean default false) is
begin
if s then
    buf := null;
    inside := true;
end if;
if e then
    inside := false;
end if;
end;
procedure getContent is
begin
htp.p_clob(buf);
end;
end;
CREATE OR REPLACE package htp is
htbuf_len int;
procedure prn(t varchar);
procedure p(t varchar);
procedure p_clob (z clob);
end;
CREATE OR REPLACE package body htp as
procedure prn(t varchar) is
begin
if custom_tag.inside then
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else
    sys.htp.prn(t);
end if;
end;
procedure p_clob (z clob) is
v_read_amount       integer   := 32767;
v_read_offset          integer    := 1;
v_buffer                 varchar2(32767);
begin
     begin
      loop
        dbms_lob.read(z,v_read_amount,v_read_offset,v_buffer);
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        v_read_offset := v_read_offset + v_read_amount;
        v_read_amount := 32767;
      end loop;
     exception
      when no_data_found then
         null;
     end;
     exception
      when others then
        raise; --null; --showHTMLdoc(p_id);
end;
procedure p(t varchar) is
begin
sys.htp.prn(t);
end;
end;
/Next save this as test.psp:
<%@ page language="PL/SQL"%>
<html>
<head><title>Test</title></head>
<body>
<h1>This is a test</h1>
<% custom_tag.savecontent(s=>true); %>
           This content is saved for later use
<% custom_tag.savecontent(e=>true); %>
   data..data..data..
<h3><% custom_tag.getcontent; %></h3>
</body>
</html>Now compile test.psp in dos with this:
loadpsp -replace -user scott/tiger@thedb test.psp
Then point your web broswser at test.
This is a the start of what I’m after. I would like to create a handful of tags to help with a few things.
Making a query tag custom tag will be challenging.
I have to figure out a way (if it’s possible) to take a query string and somehow be able to loop through the record set and reference the columns queried. Somehow do this without declaring a type or into variables.
Edited by: brian.mcginity on Feb 23, 2010 9:27 PM
Edited by: brian.mcginity on Feb 23, 2010 9:28 PM
Edited by: brian.mcginity on Feb 23, 2010 9:30 PM
Edited by: brian.mcginity on Feb 23, 2010 9:35 PM .... long day need some sleep :)
Edited by: brian.mcginity on Feb 23, 2010 9:40 PM

Cascading style sheets with htp procedures and functions

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Follow or contact me at...
&nbsp&nbsp
This post is my own opinion and does not necessarily reflect the opinion or view of Microsoft, its employees, or other MVPs.

Cross Reference Source text options

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Hi, Seir:
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Report generation toolkit and signal express user step : problem of closing reference in "Stop" event

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Hi Callahan,
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Excel Get ActiveX References.vi and closing references -- grrr

I'm new to ActiveX stuff, but eager to learn!
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So (finally), here are some of my quesitons:
1) When I go through my subVI once, pointing to one workbook, I'll get one set of references "created" or "opened" or whatever you call it when ActiveX references spring into existance. Now, when I exit the subVI, is it going to automatically try to "close" those ActiveX references? I don't suppose so, since subVI's stay in memory until the calling VI closes.
2) Now, I come back into my subVI a second time. New workbook gets created, so I get new references. Ok, fine. Uh oh! What happened to those old references? I suppose that if I didn't somehow save them off, I've probably lost the ability to get them back (maybe I'm wrong, but I don't need them back), but is LabVIEW going to "close" those old references (from previous times through the subVI) because I can't get to them anymore? Won't that cause the dreaded error 3001? If LabVIEW is not going to "close" them, what in tarnation happens to them (the old C programmer in me creeping back out)?? Now it's some oddball, orphaned reference, floating out there, hogging memory, waiting to make something crash intermittently and be a debugging nightmare?
3) Now, here's the real scary one. I think I might dodge the "error 3001" bullet in questions 1) and 2), but now let's say the user closes my LabVIEW application while Excel is still open. All those workbooks are still open. Presumably, all those ActiveX references I was not supposed to close are still open. I really hope that LabVIEW is decent enough to close/erase/delete/blow-away (whatever the right word is) all those ActiveX references which were opened/created by "Excel Get ActiveX References.vi" when my program terminates. But, oh no! Won't the error 3001 come along then? I suppose I can just dump it in the shutdown error handling.
Well, thanks for reading my novel. I don't know what can be done with LabVIEW documentation to make it more satisfying to folks like me, but perhaps someone can weigh in on all my ActiveX questions here.
Thank you in advance,
Steve Brady
Solved!
Go to Solution.

You need to close EVERY ActiveX reference you open. If you don't you'll end up with some Excel processes running even after LabVIEW exits. You can see them in Task Manager.
I, personally, don't like the LabVIEW Report Generation Tool Kit for working with Excel. I don't think it's flexible enough. I have a growing library of VIs that I've written that open, manipulate, and close Excel. Some references I pass from VI to VI and some I close right after I use them. It all depends on what I'm doing. If I want to enter read or write data from/to a certain range I'll get the range reference, read or write the data, then close it right away because I have no use for it any more. On the other hand, when I open Excel or a Workbook I keep the reference until I'm done, which could be later in the program.
1) When I go through my subVI once, pointing to one workbook, I'll get one set of references "created" or "opened" or whatever you call it when ActiveX references spring into existence. Now, when I exit the subVI, is it going to automatically try to "close" those ActiveX references? I don't suppose so, since subVI's stay in memory until the calling VI closes.
2) Now, I come back into my subVI a second time. New workbook gets created, so I get new references. Ok, fine. Uh oh! What happened to those old references? I suppose that if I didn't somehow save them off, I've probably lost the ability to get them back (maybe I'm wrong, but I don't need them back), but is LabVIEW going to "close" those old references (from previous times through the subVI) because I can't get to them anymore? Won't that cause the dreaded error 3001? If LabVIEW is not going to "close" them, what in tarnation happens to them (the old C programmer in me creeping back out)?? Now it's some oddball, orphaned reference, floating out there, hogging memory, waiting to make something crash intermittently and be a debugging nightmare?
3) Now, here's the real scary one. I think I might dodge the "error 3001" bullet in questions 1) and 2), but now let's say the user closes my LabVIEW application while Excel is still open. All those workbooks are still open. Presumably, all those ActiveX references I was not supposed to close are still open. I really hope that LabVIEW is decent enough to close/erase/delete/blow-away (whatever the right word is) all those ActiveX references which were opened/created by "Excel Get ActiveX References.vi" when my program terminates. But, oh no! Won't the error 3001 come along then? I suppose I can just dump it in the shutdown error handling.
1) No, LabVIEW will NOT close those references. You need to make sure that happens.
2) You can save the references in a functional global or use a class but if you're not going to save them close them as soon as you're done with them.
3) Your user should not be able to close your LabVIEW application without it going through the shutdown routine you've created for your program. The ABORT button should never be exposed to the user and you should capture and discard the panel close event so your program ALWAYS shuts down is an orderly fashion. If you don't you will have fragments of Excel hanging around in your operating system and will have to kill those processes using Task Manager. That should only be a problem during development, not once deployed.
I used to program in C and Assembly many moons ago. You should have seen my first LabVIEW code. I go back and look at it just so I can see how far I've come in the last 12 years. I feel your pain.
Kelly Bersch
Certified LabVIEW Developer
Kudos are always welcome

Error 7 occurred at open vi reference in New Report.VI

Hello!
I use the report generation toolkit on LabView 7.0 to create a report in Excel. The program works fine until I make an executable version. I the get the error:
Error 7 occurred at open vi reference in New Report.VI
I use the New Report.VI, Bring Excel to front.VI and Save Report To File.vi
Can you pleace help me!!!

Most likely, you did not include the required libraries in your build script. When building an executable in which you use the Report Generation Toolkit, you must include the _Word Dynamic VIs.vi from _wordsub.llb and _Excel Dynamic VIs.vi from _exclsub.llb as dynamic VIs on the Source Files tab.
Check this article for more info.
http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/86256a47004e16d186256a84004cb883?OpenDocument
Daniel L. Press
PrimeTest Corp.
www.primetest.com

Reference to HTP.P

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