Application Express :: BLOB Action - Implement File Upload And Download Function
Sep 11, 2013
In my project, I implement file's upload and download function by "BLOB Support in Forms and Reports" of official development document Advanced Programming Techniques When user click the BLOB column to download file, I want to trigger an action to update one table for counting this file is downloaded one more times. But I can not find any "dynamic action" about this Blob column of Report.
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Jan 4, 2013
I needed to create a page on my existing APEX application that would allow the user to upload a file, I followed an online tutorial where the user had created a dummy table and inserted CSV File inserted through APEX into the table. Following that simple example I am able to load the simple CSV file (from tutorial) into a dummy table (from tutorial) but when I attempt to insert actual/dummy data into my actual database (which has a lot more fields of different types), using the exact same process, I am unable to do so.
Ironically, I am unable to insert even dummy values despite the fact that I have been able to insert the same dummy values using SQL Developer. Icing on the cake is that APEX does not produce any error, this lack of debugging feature (especially line by line debugging) is such a pain. Just to add, I can load the values into an Array and can successfully print the delimited values off the array but am still unable to insert the same values into my table. Here is the table that I am attempting to insert into (actual names replaced by Dummyxx):
CREATE TABLE "TABLE"."STG" (
"DUMMY01" NUMBER,
"DUMMY02" NUMBER,
"DUMMY03" NUMBER,
"DUMMY04" DATE,
"DUMMY05" CHAR(3 BYTE),
[code].........
And here's the insertion process:
DECLARE
v_blob_data BLOB;
v_blob_len NUMBER;
v_position NUMBER;
v_raw_chunk RAW(10000);
v_char CHAR(1);
[code]..........
If I run a process to produce the output of the data array onto the screen, the values displayed are in the pattern desired.
Inserting Dummy values instead of values from the Array (v_data_array) to test
EXECUTE IMMEDIATE 'insert into TABLE.STG (DUMMY01, DUMMY02 ..... DUMMY65)
VALUES (
60040,
5,
TO_DATE("14-Dec-12","DD-MON-RRRR HH:MI:SS"),
"ABC",
"ABC",
60,
"11DEC1201",
"331",
"SCOTT TIGER",
"MARKETING",
[code].......
Note that all the the CSV does not contain all the fields, the CSV files that are expected to be entered into the system contain 65 Fields whereas the Table has 73 Fields. Also note that the process runs fine through SQL loader that is invoked through a different server which I need to release and hence the attempt to load the table this way. Also, the procedure on the SQL Loader server is quite complex and involved JAVA+Unix Shell Scripts etc. which I would prefer to avoid.
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Sep 12, 2012
Is there any way to upload a file to APEX as BFILE instead of BLOB? I need it to be BFILE since I will be only using XE which means I have limited data storage and unfortunately the system will allow users to upload and download files of different formats (.exe,.bat ) etc. which can be as big as 10MB. Also, how to download these files considering the authentication of the application.
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Oct 29, 2010
I want to create a form in oracle 10 g . In this form i want download & upload any excel file.
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May 16, 2013
im working with apex 4.2.1 and when i try to define a Dynamic action on any item, if the action type is "Set Value" or execute SQL/Javascript code it should appear a text field that let me define the action taking place. However this wont do..
this is what happens:
And this is what should happen:
I know that patch 4.2.2 solves some issues regarding dynamic actions but in the bug report there's no reference to such a problem.
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Sep 10, 2012
I am using the below function to return a blob (CSV) content, this is working fine..But i need to modify this function to display headline for the report and fixed width column in CSV ( then user no need to expand the each and every column ).
create or replace function GET_BLOB (
p_query varchar2
) return blob as
l_cursor integer;
l_cursor_status integer;
l_col_count number;
l_desc_tbl sys.dbms_sql.desc_tab2;
l_col_val varchar2(32767);
[code]....
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Jan 28, 2013
I am migrating my application from Apex 3 version to Apex 4.0.2. In previous version , downloading a file was working fine.
But now, it is not working..Is there any changes to be done with the properties?
I was using wpg_docload.download_file to download the file.
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Feb 4, 2013
I want to upload file using restful service This is my code to send file to rest service
MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
FileBody bin = new FileBody(f);
FormBodyPart bodypart = new FormBodyPart("file", bin);
reqEntity.addPart(bodypart);
[code]...
But how can i retrive at server side in restful service using plsql?
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Aug 2, 2012
I am trying to upload big files to individual table with BLOB column. During upload process after long time approx. 2h I get the following error message:
[#|2012-08-01T19:03:01.667+0200|WARNING|sun-appserver2.1|java.lang.Class|_ThreadID=27;_ThreadName=httpSSLWorkerThread-8082-2;_Reques
tID=4cec5fc8-b9e1-4017-a859-8759ec1f5d37;|oracle.jdbc.driver.OracleBlobOutputStream.flushBuffer(OracleBlobOutputStream.java:236)
java.io.IOException: ORA-01013: user requested cancel of current operation
[code]....
I am using Glassfish Server v2.1.1 with APEX Listener v1.1.3.243.11.40...The Timeout parameters for JDBC settings in APEX Listener are default. Thus I would expect to abort earlier to be an issue of JDBC Connection?
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Jun 5, 2013
How to make an item as a mandatory field dynamically with the change of another item in different regions
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Apr 17, 2013
After Upgrading to Apex 4.2
When uploading a static text/javascript file (i.e. filename = 'thisFile.js') the file Mime Type defaults to 'application/octet-stream' (instead of 'text/javascript'). This issue occurs in I.E. 8 but not in Firefox.
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Sep 19, 2012
I want my application to provide an end-user with ability to upload the files from their machine to SFTP server directly. So far, I have managed to write the function which uses java source and allows to upload files from the database. It works just fine.
The function looks as follows:
FUNCTION SFTP_CMD (
V_USER IN VARCHAR2,
V_PASS IN VARCHAR2,
V_HOST IN VARCHAR2,
[code]..
where V_FILE_SRC represents location of the file to be uploaded. The thing is that the FILE BROWSE apex item does not allow to specify the file location, it identifies it somehow automatically, when you press the button 'Choose file'. The question is how can I catch file's path, so that I can pass it to V_FILE_SRC parameter in my function? Should I write my own plugin? or hack FILE BROWSE item? =)
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Oct 18, 2012
I have a stored procedure that returns pdf as a blob.
Is there any way that this can be streamed to the browser without saving it?
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Jul 18, 2013
I am using Apex 4.2. On a click of button a Dynamic Action is written, which calls a DB Package. The DB package has exception handlers and also the package has two output parametersError Code and Error MsgSo in my code(Dynamic Code) i make a call to the package and checks the value for Erroc Code.
Begin Package call...... If v_error_code <> '0' Then Raise SC_Error; End if;Exception When SC_Error Then RAise_Application_error(v_err_code, v_err_msg);End;
But when i run the page and I click I get an Internal exception errorOutput from Debug -- I am not sure what the Cell in Red colour means, because the package is returning a correct message (before the red line).AJAX call returned server error ORA-20003:
Customer has already been matched for Execute PL/SQL Code.4......is_internal_error: true4......apex_error_code: APEX.AJAX_ SERVER_ ERROR4.. ora_ sqlcode: -200034......ora_sqlerrm: ORA-20003: Customer has already been matched4......error_backtrace: ORA-06512: at line 41 ORA-06512: at "SYS.DBMS_SYS_SQL", line 1926 ORA-06512: at "SYS.WWV_DBMS_SQL", line 973 ORA-06512: at "SYS.WWV_DBMS_SQL", line 999 ORA-06512: at "APEX_040200.WWV_FLOW_DYNAMIC_EXEC", line 830 ORA-06512: at "APEX_040200.WWV_FLOW_PLUGIN_UTIL", line 2304 ORA-06512: at "APEX_040200.WWV_FLOW_DYNAMIC_ACTION_NATIVE", line 442 4......component.type: APEX_APPLICATION_PAGE_DA_ACTS4......component.id: 231852037977562094......component.name: NATIVE_EXECUTE_PLSQL_CODE4.
Execute Error Handling Callout defined on Page or Application Level4...Execute Statement: begin declare l_error wwv_flow_error_api.t_error; begin l_error := wwv_flow_error_api.g_error; wwv_flow_error_api.g_error_result := apx_error_utils.handleerror ( p_error => l_error ); end; end;4......Values changed by callout:4..
An unexpected internal application error has occurred. Please get in contact with your system administrator and provide reference# for further investigation. 4..display_location: ON_ERROR_PAGE4Stop APEX Engine detected4Final commit4-1 - 59
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Jan 15, 2013
I am working in apex 4.2.1.
I'm having an odd problem with a checkbox on a tabular form. I created the checkbox by setting hte display as to "Simple Checkbox". The value of the underlying column sets to "Y" wehn checked and "N" when unchecked. This is what I want. The next thing I was trying to accomplish is to call a javascript function when the checkbox is clicked. So I put onclick="calculateTotal(this);" in the element attributes field. The code that it is calling is listed below. When I run the app and check the box I can seee I am entering the calculate Total function. Each of the alert functions is displaying what I would expect until I get to alerts 'IAH5' and 'IAH6'. For each of those I get an "undefined" in the alert.
So to see if this had something to do with the checkbox and added an onchange="calculateTotal(this);" to another field in my tabular form and ran it. This time I did not click on the checkbox but went into the field that I put the onchange on. When I changed this field and navigated away from it the function worked as I would expect. It displayed the appropriate values for each of the alerts and updated the fields on the screen as designed.
<script type="text/javascript">
function calculateTotal(pThis)
{
alert('IAH1');
var vRow = pThis.id.substr(pThis.id.indexOf('_')+1);
alert('IAH2');
[code].......
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Aug 1, 2012
I'm using Oracle 11g XE with apex 4.0.2.
I've been trying to use a dynamic action on a text field 'item_group'. Button doesn't have this facility. I created an advanced action using 'set value' with no condition the value being 'RAM.' The event is "change", selection type 'event source', set type is 'static assignment' and value is RAM. It is supposed to trigger when the create button is pressed but nothing happens and the field is still null. I've tried variations on this but nothing works.
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Dec 16, 2012
I want to implement Horizontal accordion... I've found a good example @ the following location
[URL]..........
but can't seems to follow the first step to Download easyaccordion.zip file and upload to the #IMAGE_PREFIX#libraries..
I am using APEX.ORACLE.COM environment.
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Aug 15, 2012
I have a situation where I need to reference a hidden item in a List of Values (for a pull-down list) SQL statement. It doesn't seem to be working properly. Here is what I have:
1) Using a dynamic action, set the value of a hidden item based on the change of Select List 1.
2) Select List 2 has a parent LOV item of Select List 1, and the Select statement for Select List 2 uses the hidden item that was set from the dynamic action above.
I can see that the dynamic action is working correctly. But when I change Select List 1, the Select List 2 does not show any values from its LOV.
I'm wondering if the LOV for Select List 2 is not working because the item used in the SQL statement was set by a dynamic action?
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Mar 1, 2013
I've created a change event dynamic action which fetches a description from the database for a user-entered code. When this is run in Firefox, a swirling loading image is displayed next to the description.However, the loading image causes anything displayed its right to be moved out and then back again when it disappears. On a form with lots of dynamic actions this can be quite disconcerting so I'd like to stop it.
Can a dynamic action's loading image be suppressed?
APEX inserts the following HTML alongside the input field:
<span class="apex-loading-indicator"></span>One option is to apply "display: none;" to the "apex-loading-indicator" class but this could affect other loading images that use the same class.
Note: This affects Firefox (18) but not IE9
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Nov 28, 2012
All I want to do is call a DA from an HTML link, is it possible? Do I call the DA function like I do with JS?
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Jan 30, 2013
I am trying to find a way to set the selected columns, like what the action menu -> select columns does. I am planning to build a AJAX Tree with check boxes, but I don't know where to pass that data to to update the selected columns. I'm sure their is a magic apex function that is passing the values of the current shuffle box, but as that is dynamically created, I have not be able to find that process / function.
Reason for this: Too many columns on the IR report. Want them divided by categories in a tree view. And no, I cant break the report up into multiple reports. Currently this report has 548 columns.
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Feb 6, 2013
I have tested the following html page:
<html>
<body>
Click me
</html>
and is working fine when I click on the button on the created page.
However, using the same thing under the "Action When Button Clicked -- Redirect to URL" when create a new button, i.e:
javascript:window.open ('file:///c:/sample/','Documents');
will only open a new window, but blank in content!
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Mar 13, 2013
I have an interactive report with two columns timestamp type. I want to use the compute action in order to get the difference between those dates. Nevertheless I got values like this: +000000008 00:00:00.000000.
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Jul 6, 2012
I’m on APEX 4.1, 11gR2, Windows 7 and the latest version of Firefox. I have an interactive report. I want the end user to have the ability to click on a row level link and launch a modal pop up view of another page. Ideally, I'd like to be able to use the Skillbuilders plug-in. I can get it to work if I just go the full page route but I cannot figure out a way to get it to work as a modal pop up. I’ve tried various methods, none of which work, but the one I believe I should be following is by using a page level Dynamic action that fires when a JQuery Selector found item is clicked. The problem I’m having is that I cannot find the correct JQuery Selector syntax for the column. My report has a static ID of IDN and my column a header of PARTS. The best I can manage is not to see anything happen other than a page refresh (when the link is set to the same page). I do not see and firebug console errors.
I’ve replaced the dynamic action modal page call with an alert, which is not showing, to make sure that it's not the plug-in configuration that is causing the problem.
what I should be filling in in the JQuery Selector field of the DA and what the link attributes should be? Given that I wish to redirect from page 1 to page 2, what do I put in the other link fields?
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Sep 7, 2012
How to have a dynamic action populate text fields. When the create button is hit, it will insert the record in the DB like normal.
I had a search box doing a dynamic action when a record_number is entered and the selection changes It populates the remaining text boxes with the results of the record_number.
I used a "SET_VALUE" true action on each individual ITEM
For each individual item i have different SQL Statement populating that item.
Ex. To populate Last_Name/ P2_LAST_NAME item i do the following
Select LAST_NAME from patient_Demographics
where record_id = :P2_RECORD_ID
Affected Elements:
P2_LAST_NAME
So i have about 8 of these true statements, so i'm hitting the DB 8 times to get the individual items. Is there a way to hit the DB once and set the items using one PL/SQL statement? I tried using a PL/sql function body,
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Sep 14, 2012
For our customer we have build a custom login page. The form we currently made has de following items:
- Username
- Password
- Select list for selecting the task type
When the customer enters his username, automatically the select list of the task type will be refreshed to get only the task type where the customer has the rights to do it. This part works...It can occur that a customer has only one task type (which is default) then we want to hide the select list. This part doesn't work
We used APEX version 4.1.1.What we did is:
- One action item to refresh the selection list (works)
- One action item to hide the selection list by starting the application (works)
- One action item to show the selection list only when the selection list has more than one result. For this part we used the conditional part of the action item (Function returning a boolean).
In the query (inside the function) we want to use the entered username, looking into the application in the session state I saw the correct username, but for some reason the function cannot use this entered username, it becomes empty. When I use a hardcoded username the code works.
Why I cannot use a username into the conditional part of the Action Item.
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Jan 24, 2013
Using Apex 4.2
Is it possible to delete a row from a tabular form using dynamic actions.
At the moment my report sql contains html and javasript for a delete button
'<input type="button" name="Delete" value="Delete" onclick="del(''delete'','''||a.applicationname||''')">' A2I then have javascript in my page header
function del(Request, Name){
var answer=confirm("Do you really want delete application "+Name+"?
* Provider assignments will be deleted
* Application objects will be deleted
* DB-roles will be dropped
* DB-views will be dropped
* User-synonyms will be dropped");
if (answer==true) {
document.getElementById('P10_APPLICATIONNAME').value = Name;
doSubmit(Request);
}
}
Finally I have a page process to do the delete which fires when the request = delete
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Jun 8, 2012
I would like to write download & upload plug in control using oracle pl/sql. Provide me some plug in play code .
DB : Oracle
Front End : .net
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Feb 25, 2013
We are using APEX 4.1. When we try to upload data to a table through upload wizard, even if the record is an update , it still shows "Insert" and then fails with "Primary Key violation" error. We have defined the correct Primary key at table and APEX interface.
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May 11, 2011
Is it possible to Bulk Upload file into Oracle table's BLOB column using Pl/Sql code.
The process I know of dose 1 file @ a time as of now.
I have more than 10000+ files to upload and this will be one off process.
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