Oracle package to process multimedia data from BLOBs or so...
I have intention to make some toy/study application about search in multimedia data - so - for now my design is to put some pictures or even movies in BLOB fields and then extract/decode (e.g. I gues - maybe this can be done even in PL/SQL code) them as data for individual pixels and them try to process with usual methods that I descibed in scholarly journals or so... So - does there any package for such decoding already available? Open source or maybe - even as Oracle supplied package...
Hi, What decode type do you need ?? Do you use some special software for develop that??
Please let us know more information about your requirements,
Regards.
Similar Messages
-
Display data from BLOB column.
Hi All,
I want to display data from blob datatype field, which contains HTML and GIF both files.
If I set it's property from file format IMAGE then i get data only gif.
if anybody have answer plz revert back...
awaiting...
JunedHi Juned
What I suggest is that you may have overlapping fields. One to show HTML and other to show GIF. You need to add one more column to your table in order identify if the BLOB is GIF or HTML.
In the Format Trigger of each of these two fields, inspect the value of flag column and hide one field if the datatype is not its type.
For instance, if flag field is 0 then hide Image field and show HTML field. If flag field is 1 then show Image field and hide HTML field.
Regards
Sripathy -
Problem while data processing TRANSACTION data from DSO to CUBE
Hi Guru's,
we are facing problem while data processing TRANSACTION data from DSO to CUBE. data packets processing very slowly and updating .Please help me regarding this.
Thanks and regards,
SridharHi,
I will suggest you to check a few places where you can see the status
1) SM37 job log (give BIrequest name) and it should give you the details about the request. If its active make sure that the job log is getting updated at frequent intervals.
2) SM66 get the job details (server name PID etc from SM37) and see in SM66 if the job is running or not. See if its accessing/updating some tables or is not doing anything at all.
If its running and if you are able to see it active in SM66 you can wait for some time to let it finish.
3) RSMO see what is available in details tab. It may be in update rules.
4) ST22 check if any short dump has occured.
You can also try SM50 / SM51 to see what is happening in the system level like reading/inserting tables etc.
If you feel its active and running you can verify by checking if the number of records has increased in the cube.
Thanks,
JituK -
Newbie blues: Oracle Sql Developer showing different data from Sqlplus.
Newbie blues: Oracle Sql Developer showing different data from Sqlplus.
First of all; it would be difficult to know less about Oracle than myself.
I just installed a recent copy of the server and am running SQl Developer 3.2.20.10.
I made a small test table , borrowed some pl sql code to add rows, then wrote code to delete some rows. Lots of fun.
In SQL Developer “Select * from t1;” now shows 7 records, which seems right.
I wanted other views of the data and so logged in from the command line using SQLPlus.
The same code here shows the table prior to the delete, with 600 plus rows. Needless to say I’ve logged out and back in again, with no changes.
No fun ! What am I not understanding here ?5e33d18c-3b32-48d4-82a7-676feeaa97c9 wrote:
Newbie blues: Oracle Sql Developer showing different data from Sqlplus.
First of all; it would be difficult to know less about Oracle than myself.
I just installed a recent copy of the server and am running SQl Developer 3.2.20.10.
I made a small test table , borrowed some pl sql code to add rows, then wrote code to delete some rows. Lots of fun.
In SQL Developer “Select * from t1;” now shows 7 records, which seems right.
I wanted other views of the data and so logged in from the command line using SQLPlus.
The same code here shows the table prior to the delete, with 600 plus rows. Needless to say I’ve logged out and back in again, with no changes.
No fun ! What am I not understanding here ?
Others sessions never see uncommitted data
> then wrote code to delete some rows. Lots of fun.
did you ever actually issue COMMIT so other session can see the changed data? -
How to get/process the Data from XMLSocket?
Hello All,
I'm using Adobe Professional CS6, and Actionscript 3.0.
To start with I have a C# program that basically just feeds data out from a Server in the form of XML data. I then have a Flash program that should receive the data and then I'll do some stuff with it. We had this working in Actionscript 1.0 but we need to upgrade the code to Actionscript 3.0, but instead of just trying to convert stuff over to the new Actionscript version, I'm going to re-write the program.
So far I've basically just defined some EventListeners most of which I found examples of online for using XMLSockets. As of now the Flash program will connect an XMLSocket to the Server that is feeding out the data, and the server feeding the data resends new data every 5-10 seconds or so.
So when a grouping of XML Data comes in on the port I defined, the following Function gets executed for handling the incoming data. For my EventListener's Function for "socket.addEventListener(DataEvent.DATA, dataHandler);" ("socket" is defined as --> var socket = new XMLSocket(); ). So when the new data comes in it executes the above function.
The trouble I'm having is declaring a new variable of type "XML" and then using that variable to pull out individual "nodes/children" from the incoming XML Data. I found an example online that was very close to what I want to do except instead of using an XMLSocket to get data constantly streaming in they use the "URLLoader" function to get the XML data. I know I'm receiving the XML data onto the server because if I set the (e: DataEvent) variable defined in the function "head" to a string and then run a trace on that I can see ALL of the XML data in the "Output Window".
But I can't seem to be able to set (e: DataEvent) to a XML variable so I can access individual elements of the XML data. The example I found (which uses the URLLoader instead) uses this line (myXML = new XML(e.target.data);) to set the XML Variable, which won't work for mine, and if I try to do the same thing in my code it simply prints this for as many lines as there is XML data --> "[object XMLSocket]"
MY CODE:
*I left out the other Functions that are in my code for the EventListeners you'll see defined below, except for the one in question:
---> "function dataHandler(e: DataEvent):void"
import flash.events.IOErrorEvent;
import flash.events.ProgressEvent;
import flash.events.SecurityErrorEvent;
import flash.events.DataEvent;
var socket = new XMLSocket();
socket.addEventListener(Event.CONNECT, connectHandler);
socket.addEventListener(Event.CLOSE, closeHandler);
socket.addEventListener(DataEvent.DATA, dataHandler);
socket.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);
socket.addEventListener(ProgressEvent.PROGRESS, progressHandler);
socket.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler);
var success = socket.connect('server.domain.name.local',3004);
The code in this function was used from an example I found online as described above in the post:
LINK --> http://www.republicofcode.com/tutorials/flash/as3xml/
// The Commented out code (*in blue) will show ALL the xml data inside the "Output Window":
function dataHandler(e: DataEvent):void {
// var myStr:String = e.data;
var xml:XML;
xml = new XML(e.target.data); //<--- THIS DOESN"T WORK (I DONT THINK 'target' IS CORRECT HERE)??
if (socket.connected)
// trace(myStr)
trace(xml);
The Output from the line "trace(xml)" will show this data below in the "Output Window" (*FYI There should be 6 lines of XML Data on each 'update'):
[object XMLSocket]
[object XMLSocket]
[object XMLSocket]
[object XMLSocket]
[object XMLSocket]
[object XMLSocket]
Could someone show or point me in the right direction on this. I want to be able to access specific parts of the incoming XML Data.
Here's some sample XML Data:
<MESSAGE VAR="screen2Display" TEXT="CSQ_1" />
<MESSAGE VAR="F1_agentsReady" TEXT="111" />
<MESSAGE VAR="F1_unavailableAgents" TEXT="222" />
<MESSAGE VAR="F1_talkingAgents" TEXT="333" />
<MESSAGE VAR="F1_callsHandled" TEXT="444" />
<MESSAGE VAR="F1_ABDRate" TEXT="555" />
Any thoughts or suggestions would be greatly appreciated..!
FYI:
I'm VERY new to Actionscript/Flash Developing (*about a week now), so go easy on me haha...
Thanks in Advance,
MattHey Guys, thanks ALOT for the replies!!
Andrei1 and Sinious,
The code I show above is actually just what I found in an example online, and its what i was trying to show you what "they" used
in the URLLoader example. I wasn't trying to use URLLoader, but it was the closest example I found online to what I was trying to
do in terms of processing the XML Data, and not how I read it in. So XMLSocket IS definetly what I'm trying to use because the Server
I'm receiving the XML Data from "pushes" it out every 10 seconds or so. So yea I definatly want to use XMLSocket and not URLLoader...
Sorry for the confusion...
The example you show:
var xml:XML = new XML(e.data)
Is actually what I had in my original code but I couldn't get it to show anything in the "Output Window" using the trace() method on
it, so I assumed I wasn't doing it correctly...
What my original code was in the "dataHandler()" Function was this:
function dataHandler(e: DataEvent): void
var xml: XML = XML(e.data);
if (socket.connected)
trace(xml);
msgArea.htmlText += "*socket.connected = TRUE\n"
} else {
msgArea.htmlText += "*socket.connected = FALSE\n"
OUTPUT:
And what I get when I run a Debug on it is, in the "msgArea", which is just a simple Text Box w/ Dynamic Text on the main frame it prints:
"socket.connected = TRUE
socket.connected = TRUE
socket.connected = TRUE
socket.connected = TRUE
socket.connected = TRUE
socket.connected = TRUE"
It prints that message 6 times in the msgArea for each XML Message that comes in (*which I think 6 times because there
are 6 "sections/nodes" in the XML Data). But then NOTHING prints in the "Output Window" for the "trace(xml)" command.
Not sure why nothing is showing in the "Output Window", maybe the XML is not complete? But I could see data in the "Output
Window" when I set "e.data" to a string variable, so I know the Data is reaching the program. Since I could see the XML Data in
a string variable, does that mean I can rule out that the XML Data coming in is considered a "complete" XML Document?
Because I wasn't sure if to be considered a complete XML Document it would need to have this included in the message..?
"<?xml version="1.0"?>"
For the tests I'm running, one single XML message which is being pushed out from the server looks like this:
<MESSAGE VAR="screen2Display" TEXT="Call_Queue_1" />
<MESSAGE VAR="F1_agentsReady" TEXT="111" />
<MESSAGE VAR="F1_unavailableAgents" TEXT="222" />
<MESSAGE VAR="F1_talkingAgents" TEXT="333" />
<MESSAGE VAR="F1_callsHandled" TEXT="444" />
<MESSAGE VAR="F1_ABDRate" TEXT="555" />
Would I need to include that "Header" in the XML message above?
i.e. "<?xml version="1.0"?>"
Or do I need to be more specific in the trace command instead of just using "trace(xml)"?
Also yes, I already have a Flash Policy file setup and working correctly.
Anyway, thanks again guys for the replies, very much appreciated!!
Thanks Again,
Matt -
Reading the data from BLOB column
HI,
I have a table with following structure
Test_Mail(Attachment BLOB,Attachmentname varchar2(255),FileSize number)
The data in the table is like
Attachment|Attachmentname|FileSize
BLOB|test.txt|1236
I wants to read the data from the BLOB attachment in to new file.
can any one help me in doing this with plsql??
Thanks in advance,
Balaji tk.
Edited by: Balaji.tk on Jan 9, 2011 9:28 PMMay be something like this ?
DECLARE
l_file UTL_FILE.FILE_TYPE;
l_buffer RAW (32767);
l_amount BINARY_INTEGER := 32767;
l_pos INTEGER := 1;
l_blob BLOB;
l_blob_len INTEGER;
BEGIN
-- Open the destination file.
l_file := UTL_FILE.FOPEN ('TEST_DIR', v_attachment_name, 'wb');
--This v_attachment_name can be selected from your table.
-- Get LOB locator
FOR rec IN (
SELECT attachment l_blob
FROM test_mail
--Your where condition to find the row.
--AND ROWNUM =1
LOOP
l_blob_len := DBMS_LOB.getlength (rec.l_blob);
-- Read chunks of the BLOB and write them to the file
-- until complete.
WHILE l_pos < l_blob_len
LOOP
DBMS_LOB.READ (rec.l_blob, l_amount, l_pos, l_buffer);
UTL_FILE.put_raw (l_file, l_buffer, FALSE);
l_pos := l_pos + l_amount;
END LOOP;
commit;
END LOOP;
-- Close the file.
UTL_FILE.FCLOSE (l_file);
EXCEPTION
WHEN OTHERS
THEN
-- Close the file if something goes wrong.
IF UTL_FILE.IS_OPEN (l_file)
THEN
UTL_FILE.FCLOSE (l_file);
END IF;
RAISE;
END; -
Oracle form: how to retrieve data from database to pop list
I have problem in retrieving data from database to item list in
oracle forms.
Can anyone help me.
thanks.The next is an example but you can find this information in
Forms Help:
DECLARE
G_DESCS RECORDGROUP;
ERRCODE NUMBER;
rg_id RECORDGROUP;
rg_name VARCHAR2(40) := 'Descripciones';
BEGIN
rg_id := FIND_GROUP(rg_name);
IF Id_Null(rg_id) THEN
G_DESCS := Create_Group_From_Query (rg_name, 'SELECT
DESCRIPCION DESCRIPCION, DESCRIPCION DESC2 FROM FORMAS_PAGO);
ERRCODE := POPULATE_GROUP(G_DESCS);
POPULATE_LIST('FORMAS_PAGO.CMBDESCRIPCION',G_DESCS);
END IF;
END;
Saludos.
Mauricio. -
Oracle DB: How to read data from a corrupted database table.
Hi All,
Wanted to know if there is a way I could read data from a corrupted Oracle database table?
Are there any tools that I can use? Or does Oracle provides any mechanism to do that?
Any pointers in this regard would be helpful.
Thanks in Advance.user10600611 wrote:
Table shows inconsistent data.You are going to have to be more specific. Inconsistent in what sense? A correct data model should not allow for inconsistencies to crop up.
However, you may be able to use one of the many FLASHBACK features of Oracle to look at the table at a prior point in time before the corruption.
HTH! -
Post - Processing Video Data From NetStream
Is it possible to intercept video data from a NetStream object and do some custom post-processing say 'deblocking on decoded data or decryption on encoded content' etc. The Sound class provides access to the SampleData but i havent been able to find the Video class providing similar support. Am i missing something or is this inherently impossible
Thanks in advance
Sunil MI managed to perform video post-processing through alchemy some time ago. I think I drew the video to a BitmapData object, converted the pixels to a bytearray with getPixels() to read them, and then updated the contents with setPixels() straight from alchemy's memory bytearray every frame. Just watch out for endianness.
Really, I imagine video postprocessing would be better suited for a pixel bender filter than alchemy code, and in general it is definitely not something flash player is designed to do. -
XML data from BLOB to CLOB - character set conversion
Hi All,
I'm trying to solve a problem with a character set conversion in PL/SQL in the following scenario:
1. source is an XML as a BLOB variable.
2. target is an XML as a CLOB variable.
3. the problem I have is the following:
- database character set is set to UTF-8
- XML character set could be anything (UTF-8, ISO 8859-1, ISO 8859-2, ASCII, ...)
- I need to write a procedure which converts the source BLOB content into the target CLOB taking into account the XML encoding and converts it into the DB default character set (UTF8).
I've been able to implement a simple conversion function. However, this function expects static XML encoding ISO-8859-1. The main part of the function looks as follows:
buffer := UTL_RAW.cast_to_varchar2(
UTL_RAW.convert(
DBMS_LOB.SUBSTR(source_blob_variable, 16000, pos)
, 'American_America.UTF8'
, 'American_America.we8iso8859p1')
Does anyone have an idea how to rewrite the code to handle "any" XML encoding in the source BLOB file? In other words, is there a function in Oracle which converts XML character set names into Oracle character set values (ISO-8859-1 to we8iso8859p1, UTF-8 to UTF8, ...)?
Thanks a lot for any help.
JuliusI want to pass a BLOB to some "createXML" procedure and get a proper XMLType in UTF8 character set, properly converted from whatever character set is the input in.As per documentation the generated XML has always the encoding set at the client side depending on NLS_LANG (default UTF-8), regardless of the input encoding, so I don't see a need to parse the PI of the XML:
C:\>echo %NLS_LANG%
%NLS_LANG%
C:\>sqlplus
SQL*Plus: Release 11.1.0.6.0 - Production on Wed Apr 30 08:54:12 2008
Copyright (c) 1982, 2007, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> var cur refcursor
SQL>
SQL> declare
2 b blob := utl_raw.cast_to_raw ('<a>myxml</a>');
3 begin
4 open :cur for select xmlroot (xmltype (utl_raw.cast_to_varchar2 (b))) xml from dual;
5 end;
6 /
PL/SQL procedure successfully completed.
SQL>
SQL> print cur
XML
<?xml version="1.0" encoding="UTF-8"?><a>myxml</a>
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
C:\>set NLS_LANG=GERMAN_GERMANY.WE8ISO8859P1
C:\>sqlplus
SQL*Plus: Release 11.1.0.6.0 - Production on Mi Apr 30 08:55:02 2008
Copyright (c) 1982, 2007, Oracle. All rights reserved.
SQL> var cur refcursor
SQL>
SQL> declare
2 b blob := utl_raw.cast_to_raw ('<a>myxml</a>');
3 begin
4 open :cur for select xmlroot (xmltype (utl_raw.cast_to_varchar2 (b))) xml from dual;
5 end;
6 /
PL/SQL-Prozedur erfolgreich abgeschlossen.
SQL>
SQL> print cur
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
<a>myxml</a> -
How can I use Hash Table when processing the data from cdpos and cdhdr
Hello Guru,
I've a question,
I need to reduce the access time to both cdhdr and cdpos.
Because may be I'll get a huge number of entries.
It looks like that by processing cdhdr and cdpos data will take many secondes,
it depends on how many data you need to find.
Hints : Putting instructions inside a form will slow down the program?
Also, I just want use Hash table and I need to put a loop-instruction going on the hash-table in form.
I know that it's no possible but I can declare an index inside my customized hash table.
For example :
DO
READ TABLE FOR specific_hash_table WITH KEY TABLE oindex = d_oindex.
Process data
d_oindex += 1.
UNTIL d_oindex = c_max_lines + 1.
Doing this would actually not necessary improve the performance.
Because It looks like I'm having a standard table, may be there's a hash function, but it could be a bad function.
Also I need to use for example COUNT (*) to know how many lines I get with the select.
FORM find_cdpos_data_with_loop
TABLES
i_otf_objcs TYPE STANDARD TABLE
USING
i_cdhdr_data TYPE HASHED TABLE
i_objcl TYPE j_objnr
* i_obj_lst TYPE any
i_option TYPE c
CHANGING
i_global TYPE STANDARD TABLE.
" Hint: cdpos is a cluster-table
CONSTANTS : objectid TYPE string VALUE 'objectid = i_obj_lst-objectid',
changenr TYPE string VALUE 'changenr = i_obj_lst-changenr',
tabname TYPE string VALUE 'tabname = i_otf_objcs-tablename',
tabnameo1 TYPE string VALUE 'tabname NE ''''',
tabnameo2 TYPE string VALUE 'tabname NE ''DRAD''',
fname TYPE string VALUE 'fname = i_otf_objcs-fieldname'.
DATA : BEGIN OF i_object_list OCCURS 0,
objectclas LIKE cdpos-objectclas,
objectid LIKE cdpos-objectid,
changenr LIKE cdpos-changenr,
END OF i_object_list.
DATA : i_cdpos LIKE TABLE OF i_object_list WITH HEADER LINE,
i_obj_lst LIKE LINE OF i_cdpos.
DATA : tabnamev2 TYPE string.
IF i_option EQ 'X'.
MOVE tabnameo2 TO tabnamev2.
ELSE.
MOVE tabnameo1 TO tabnamev2.
ENDIF.
*LOOP AT i_cdhdr_data TO i_obj_lst.
SELECT objectclas objectid changenr
INTO TABLE i_cdpos
FROM cdpos
FOR ALL ENTRIES IN i_otf_objcs
WHERE objectclas = i_objcl AND
(objectid) AND
(changenr) AND
(tabname) AND
(tabnamev2) AND
(fname).
LOOP AT i_cdpos.
APPEND i_cdpos-objectid TO i_global.
ENDLOOP.
*ENDLOOP.
ENDFORM. "find_cdpos_dataHey Mart,
This is what I met, unfortunately I get the same performance with for all entries.
But with a lot of more code.
FORM find_cdpos_data
TABLES
i_otf_objcs TYPE STANDARD TABLE
USING
i_objcl TYPE j_objnr
i_obj_lst TYPE any
i_option TYPE c
CHANGING
i_global TYPE STANDARD TABLE.
" Hint: cdpos is a cluster-table
CONSTANTS : objectid TYPE string VALUE 'objectid = i_obj_lst-objectid',
changenr TYPE string VALUE 'changenr = i_obj_lst-changenr',
tabname TYPE string VALUE 'tabname = i_otf_objcs-tablename',
tabnameo1 TYPE string VALUE 'tabname NE ''''',
tabnameo2 TYPE string VALUE 'tabname NE ''DRAD''',
fname TYPE string VALUE 'fname = i_otf_objcs-fieldname'.
* DATA : BEGIN OF i_object_list OCCURS 0,
* objectclas LIKE cdpos-objectclas,
* objectid LIKE cdpos-objectid,
* changenr LIKE cdpos-changenr,
* END OF i_object_list.
** complete modified code [begin]
DATA : BEGIN OF i_object_list OCCURS 0,
objectclas LIKE cdpos-objectclas,
objectid LIKE cdpos-objectid,
changenr LIKE cdpos-changenr,
tabname LIKE cdpos-tabname,
fname LIKE cdpos-fname,
END OF i_object_list.
** complete modified code [end]
DATA : i_cdpos LIKE TABLE OF i_object_list WITH HEADER LINE.
DATA : tabnamev2 TYPE string.
** complete modified code [begin]
FIELD-SYMBOLS : <otf> TYPE ANY,
<otf_field_tabname>,
<otf_field_fname>.
** complete modified code [end]
IF i_option EQ 'X'.
MOVE tabnameo2 TO tabnamev2.
ELSE.
MOVE tabnameo1 TO tabnamev2.
ENDIF.
** SELECT objectclas objectid changenr
** INTO TABLE i_cdpos
* SELECT objectid
* APPENDING CORRESPONDING FIELDS OF TABLE i_global
* FROM cdpos
* FOR ALL ENTRIES IN i_otf_objcs
* WHERE objectclas = i_objcl AND
* (objectid) AND
* (changenr) AND
* (tabname) AND
* (tabnamev2) AND
* (fname).
** complete modified code [begin]
SELECT objectid tabname fname
INTO CORRESPONDING FIELDS OF TABLE i_cdpos
FROM cdpos
WHERE objectclas = i_objcl AND
(objectid) AND
(changenr) AND
(tabnamev2).
ASSIGN LOCAL COPY OF i_otf_objcs TO <otf>.
LOOP AT i_cdpos.
LOOP AT i_otf_objcs INTO <otf>.
ASSIGN COMPONENT 'TABLENAME' OF STRUCTURE <otf> TO <otf_field_tabname>.
ASSIGN COMPONENT 'FIELDNAME' OF STRUCTURE <otf> TO <otf_field_fname>.
IF ( <otf_field_tabname> EQ i_cdpos-tabname ) AND ( <otf_field_fname> EQ i_cdpos-fname ).
APPEND i_cdpos-objectid TO i_global.
RETURN.
ENDIF.
ENDLOOP.
ENDLOOP.
** complete modified code [end]
** LOOP AT i_cdpos.
** APPEND i_cdpos-objectid TO i_global.
** ENDLOOP.
ENDFORM. "find_cdpos_data -
Read and write compressed data from blob in ADF
Hi All,
I have a requirement where i need to compress/zip the file, if the file is greater than 2MB and store in database.
And i need to extract it from database in download dialog as zip file.
Please suggest me, i m using JDev 10.1.3.5 and using inputFile component or please redirect me to any examples or demos.
Regards,
R N V PrasadHi
I am first uploading file and if the file is more than 2MB, i am compressing it. i used the below method for compressing.
public void zipFile(String inputFilePath,String outputFilePath,String outFileName){
long fileSize;
long twoMBFileSize=2097152;
String outFileLocation;
try
byte[] data = new byte[1000];
File file=new File(inputFilePath);
FileInputStream fis=new FileInputStream(file);
BufferedInputStream in = new BufferedInputStream(fis);
fileSize = file.length();
System.out.println("File size.."+fileSize);
int count;
outFileLocation=outputFilePath+outFileName;
System.out.println("outFileLocation..."+outFileLocation);
ZipOutputStream out = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(outFileLocation)));
out.putNextEntry(new ZipEntry(outFileName));
while((count = in.read(data,0,1000)) != -1)
out.write(data, 0, count);
in.close();
out.flush();
out.close();
catch(Exception e)
e.printStackTrace();
And i will read the compressed file and posting to DB.
Here i am facing the problem while downloading the compressed files.
Naga -
Processing exported data from web application
Hi all,
here's my problem: I've got a Web Application designed in WAD and want to get the current navigation state (which is in the data provider) into an external application (i.e. a web service). What I already tried was to export the navigation state via SAP_BW_URL COMMAND='EXPORT' FORMAT='XML' and redireted it to a web service. But I wasn't able to get the XML document, I only got a XML_ID (as you can see in forum thread Accessing XML File).
Has anyone another approach to get the data exported and ready to be processed by a custom web service or external application (ABAP FM,..)?
Thanks in advance and best regards!
DominikDear Dominik,
maybe is XMLA for Analysis in BW a solution for you:
try this links
http://help.sap.com/saphelp_nw04/helpdata/en/ba/e380e03c3a4dbf8cf082f0c910f9cf/frameset.htm
http://help.sap.com/saphelp_nw04/helpdata/en/d8/3bfc3f8fc2c542e10000000a1550b0/content.htm
This a SOAP Web Service which gives back query content, the query is defined within MDX Statement in a XML file.
There also exists a detailed How To Document in SAP Service Marketplace - but unfortunately i can´t found it.
Regards
Marcus -
Securely processing form data from applet
i have created an applet that will accept data. I now need the applet to open a data base file and put the data in the appropriate fields of the database. This must be done securely. Can someone point me in the right direction please.
doh, sorry ...here is the code. Everything compiles except this part
if(e.getSource() == frame1.panel2.submit)
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url = "jdbc:odbc:MS Access 7.0 Database";
Connection con = DriverManager.getConnection(url, "Admin");
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Creating Packages from BLOB field contents, line wrap problems
Good afternoon,
we use an in-house developed database-driven update system to update both our databases and filesystems, the system itself performs really well but there is still one problem I can't fix without some expert help:
the code of to-be-updated Oracle packages is stored inside of a BLOB field, the BLOB field will contain both the package specification and package body and needs to be split into two parts to first execute the spec and then to execute the package body (I tried to execute both in a single step but this didn't work). This works for packages with less than 32767 characters and also works in some other cases but I found one case where the executed code contains an extra line wrap right in the middle of a word.
To make it more clear (I hope it's comprehensible), imagine the following database content:
CREATE OR REPLACE Package
MyPack
AS
[... a lot procedure headers ...]
END MyPack;
CREATE OR REPLACE
Package Body MyPack AS
[... a lot more procedures ...]
PROCEDURE myTest (intID OUT integer)
AS
BEGIN
SELECT count (*) into intID FROM MyTa[--this is where the dbms_lob.substr() ends --]ble;
END;
END MyPack;My code searches for the second occurrence of the "Create or replace package", splits the code into spec and body, executes the specification and keeps on adding the rest of the code to a VARCHAR2A variable called "storedCode" from the BLOB. Now in the above example, after the specification has been removed from the string, the remaining characters (ending with the "MyTa" string) are added to the varchar2a variable, the next line is fetched from the BLOB via "dbms_lob.substr()" and added as long as dbms_lob.substr() does not return a NULL value (end of BLOB). When the code is executed after all has been fetched, the generated Package Body will contain an extra line wrap right in the middle of the "MyTable" word compiling the package invalid.
This is the procedure code I use (definitely improvable, I'm better in MSSQL and MySQL dialects ...) to load, parse and execute the BLOB content:
-- to run package code
procedure runPackageCode (stepRef integer)
AS
numLines integer default 1;
pos integer default 1;
storedCode LOG_CHANGEDOBJECT.STOREDOBJECT%type;
objectCursor integer;
lSqlOut integer;
sqlCommand dbms_sql.varchar2a;
emptyCommand dbms_sql.varchar2a;
pIsError integer := 0;
pErrorMsg varchar2(200) := '';
updateRef integer := 0;
currentUpdate integer := 0;
schemaReference varchar2(20);
-- required to do string cutting
strLine varchar2(32767);
strLeftFromSlash varchar2(32767);
strRemaining varchar2(32767);
intDelimiterPos integer := 0;
begin
-- retrieve update ID
SELECT log_update_ref INTO currentUpdate FROM link_update_with_taskstep WHERE log_taskstep_ref = stepRef;
begin
select storedobject, change_area
into storedCode, schemaReference
from vw_storedobjects
where step_id = stepRef;
exception
when no_data_found then
pIsError := 1;
pErrorMsg := 'Invalid SQL ID ' || stepRef;
pkg_generic.LogError(updateRef, 'LocalUpdater', stepRef, 'Run package code failed: ' || pErrorMsg);
end;
if pIsError = 0 then
begin
-- change schema
execute immediate 'alter session set current_schema = ' || schemaReference;
objectCursor := dbms_sql.open_cursor;
loop
strLine := UTL_RAW.CAST_TO_VARCHAR2(dbms_lob.substr(storedCode, 32767, pos));
intDelimiterPos := regexp_instr(strLine, '\s*Create\s*or\s*Replace\s*Package', 2, 1, 0, 'i');
while intDelimiterPos > 0
loop
-- '/' found, execute currently stored statement
strLeftFromSlash := substr(strLine, 1, intDelimiterPos-1);
strLine := substr(strLine, intDelimiterPos);
-- execute the extracted part without any '/' in it
sqlCommand(numLines) := regexp_replace(strLeftFromSlash, '(^|\s+)/(\s+|$)', '', 1, 0, 'm');
if (sqlCommand(numLines) is not null) then
objectCursor := dbms_sql.open_cursor;
dbms_sql.parse(objectCursor, sqlCommand, 1, numLines, true, dbms_sql.native);
lSqlOut := dbms_sql.execute(objectCursor);
dbms_sql.close_cursor(objectCursor);
end if;
-- reset sqlCommand
sqlCommand := emptyCommand;
-- reset line counter and store remaining string
numLines := 1;
-- check for further '/'s
intDelimiterPos := regexp_instr(strLine, '\s*Create\s*or\s*Replace\s*Package', 2, 1, 0, 'i');
end loop;
-- add the remaining strLine to the sqlCommand
strLine := regexp_replace(strLine, '(^|\s+)/(\s+|$)', '', 1, 0, 'm');
--> I assume this line breaks the code, lpad()'ing the content to move it to the end of a varchar2a line didn't help
sqlCommand(numLines) := strLine;
exit when sqlCommand(numLines) is null;
pos := pos+32767;
numLines := numLines+1;
end loop;
objectCursor := dbms_sql.open_cursor;
dbms_sql.parse(objectCursor, sqlCommand, 1, numLines, true, dbms_sql.native);
lSqlOut := dbms_sql.execute(objectCursor);
dbms_sql.close_cursor(objectCursor);
commit;
-- reset schema
execute immediate 'alter session set current_schema = UPDATE_DB';
-- set state to installed
pkg_update.setstepstate(stepRef, 'Installed');
exception
when others then
-- reset schema
execute immediate 'alter session set current_schema = UPDATE_DB';
-- set state to installFailed
pkg_update.setstepstate(stepRef, 'InstallFailed');
pkg_generic.LogError(updateRef, 'Database', stepRef, 'Run package code failed: ' || sqlerrm);
end;
end if;
END; Thanks if you kept on reading so far, I would really appreciate any feedback!
Regards, SaschaWelcome to the forum!
Whenever you post provide your 4 digit Oracle version (result of SELECT * FROM V$VERSION).
Thanks for providing an easy-to-understand problem statement and for using code tags.
>
the code of to-be-updated Oracle packages is stored inside of a BLOB field
>
This should be stored in a CLOB since it is character data. Why are you using BLOB?
>
the BLOB field will contain both the package specification and package body and needs to be split into two parts to first execute the spec and then to execute the package body
>
Good, clear problem statement. So why doesn't your code do just what you said it should do: 1) split the code into two parts, 2) execute the spec and 3) execute the body.
Instead of writing code that does these three relatively simple steps your code tries to combine splitting and executing and mushes/mashes it all together. The result, as you found, is code that is hard to understand, hard to debug, doesn't work and doesn't report on what it is doing.
Code like this doesn't have a performance issue so the code should implement the simple step-by-step process that you so elegantly stated in your problem description:
1. split the code into two parts
2. execute the spec
3. execute the body
My advice is to refactor your code to perform the above steps in the proper order and to add proper exception handling and reporting for each step. Then when a step isn't working you will know exactly where and what the problem is.
Here are my recommendations.
1. Add two CLOB variables - one will hold the spec, the second will hold the body
2. Add a comment (you have some good ones in the code now) for every step no matter how trivial it may be
3. Add exception/error handling to EVERY STEP
Your code for the first step has a comment but no exception handling. What should happen if you don't get any data? Why aren't you validating the data you get? Dynamic SQL using table-driven data is great, I love it, but you MUST validate that the data you get is what you expect to get.
-- retrieve update ID
SELECT log_update_ref INTO currentUpdate FROM link_update_with_taskstep WHERE log_taskstep_ref = stepRef;Recommended
-- step 1 - retrieve update ID - This is the id that determines BLAH, BLAH, BLAH - add appropriate to tell a new developer what this ID is and what it means.
BEGIN
SELECT log_update_ref INTO currentUpdate FROM link_update_with_taskstep WHERE log_taskstep_ref = stepRef;
EXCEPTION
WHEN ??? THEN -- what should happen if step 1 fails? Do it here - don't default to an exception handler that is several pages away.
END;Your code
begin
select storedobject, change_area
into storedCode, schemaReference
from vw_storedobjects
where step_id = stepRef;
exception
when no_data_found then
pIsError := 1;
pErrorMsg := 'Invalid SQL ID ' || stepRef;
pkg_generic.LogError(updateRef, 'LocalUpdater', stepRef, 'Run package code failed: ' || pErrorMsg);
end;
Good - except there is no comment that says what this does - I assume that the query above and this block are the 'retrieve update ID ' step?
You log an error message and set the error flag to '1'. But since you don't want to continue why aren't you exiting the procedure and returning right here?
if pIsError = 0 then
beginSo now you check the error flag and do several pages of code if there were no errors.
I don't like that 'inverted' logic.
If you don't want to continue then STOP right now! Don't make a developer scan through pages and pages of code to find out you really aren't doing anything else if there was an error.
Either put a RETURN statement in the exception handler above or change your code to
if pIsError = 1 then
RETURN;
end if;Now the rest of the code doesn' t have to be indented; you will never get there if there is an error. Check for errors after every step and exit right then as appropriate.
-- change schema
execute immediate 'alter session set current_schema = ' || schemaReference;
objectCursor := dbms_sql.open_cursor;
loop
strLine := UTL_RAW.CAST_TO_VARCHAR2(dbms_lob.substr(storedCode, 32767, pos));
intDelimiterPos := regexp_instr(strLine, '\s*Create\s*or\s*Replace\s*Package', 2, 1, 0, 'i');
while intDelimiterPos > 0
loopThis code mixes all of the steps together into one giant mess. You open a cursor, try to split the BLOB into spec and body and try to parse and execute both all within a double nested loop.
Even if that works correctly another developer will have a hard time understanding what the code is doing and fixing it if it goes wrong. And it will go wrong if you let me test if for you because I will put garbage into the BLOB for the spec, body or both to make sure it breaks and to see how your code handles it.
I suggest you rewrite this double nested loop to perform the three steps separately.
1. split the code into two parts
a. put the spec into one new CLOB variable and the body into the other.
b. use DBMS_OUTPUT (or a work table) to output the spec and body so you can see what the code is and make sure the 'split' process worked properly. You probably created that BLOB by manually concatenating the SPEC and BODY to begin with so now create a SPLIT process to split them again and give them back to you. This is such a fundamental component that I suggest creating a new SPLIT_MY_BLOB procedure. This procedure would take a BLOB and return two CLOBS as OUT parameters: one CLOB is the spec and one is the body. Then you can reuse this 'split' procedure in other code or more complex versions of code. Modular programming is the key.
2. execute the spec - Now have a step that executes the spec and does something appropriate if the step succeeds or if it fails. I mean, do you really want to do execute the body if the spec execution fails? What do you want to do? Should you delete the body and spec? If you don't you might wind up with an INVALID body based on old code and an INVALID spec based on the new code you were trying to use. How will anyone, including you, know that the spec and body in the ALL_SOURCE view is really two different versions of things?
This suggests that for your use case you may want to consider DROPPING the entire package, spec and body, before trying to recreate them both. At least if the package is totally missing anyone will know that the entire thing needs to be put back. Ahhhh - but to do that you need to know the package name so you can drop it. Than may require adding another step to get the package name from your data-driven table and adding a DROP PACKAGE step.
3. execute the body - This step executes the body. Hmmmm - we have two nearly identical steps. So why don't you create a new function/procedure that takes a CLOB as input, uses dynamic sql to execute it and returns a result code. That would be useful. Then you could execute ANY sql stored in a CLOB and have a generic function that you can use for other things.
Right now you are using the VARCHAR2 table version of DBMS_SQL.PARSE but you would change this to use the CLOB version.
The end result of this refactoring is a main function/procedure that acts as the CONTROL - it decides what to do and what data (BLOB) to do it with. But it doesn't actually do ANY of the work. It just controls what is done.
And you have a couple of generic, reuseable functions that actually do the work. One knows how to split a CLOB into spec and body. The other knows how to use dynamic SQL to execute a CLOB.
Now you have a modular architecture that is easy to understand, easy to code and easy to test.
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