Apex. Ajax.CLOB - extraction of data from a clob field

I have an application that uses a table that stores xml data, and the field of the table that stores the data is a clob. I used the example of Carl Backstrom to build what I have so far, (the blessing of God on her family). Here is the script I use to store the data of an HTML editor in the database:

function clob_set (request) {}
var oEditor = FCKeditorAPI.GetInstance ('P59_CONTENT');
var clob_ob = new apex.ajax.clob)
function() {}
var p.readyState = RS
If (rs == 1 |) RS == 2 | RS == 3) {}
$x_Show ('AjaxLoading');
} else if(rs == 4) {}
$x_Hide ('AjaxLoading');
$s ('P59_CONT', p.responseText);
doSubmit (request)
} else {return false ;}
}
);

$x('P59_CONT').value = oEditor.GetHTML ();
oEditor.SetHTML (»);

If (! $v_IsEmpty ('P59_CONT')) {clob_ob._SET ($v ('P59_CONT'));}
}

Present it calls a process that inserts the data in the field clob001 of the CLOB_CONTENT collection in my table.

How can I get the data of the table again to present in the HTML editor? Each option I use me trouble with the limitation of length k 32 surviving more in the Apex. What would be the best way to answer that?

Hi Yonkovator,

I've also been struggeling with this problem for some time. Like you, I also used the example of Carl (my greatest condolences to his family and friends).
Today, I finally managed to make it work. Now I can save the Clob to a HTML Editor field and load the Clob data (from the database) into the HTML editor field.

* First, I created a region of HTML in which I placed my order on the day of the HTML editor.
* Then, I created a process (On Load - after header) that retrieves the Clob data from the database and puts it inside the collection
CLOB_COLLECTION. (Below is the code I used to recover the data).

declare
L_Name opcd_entity.name%type;
l_entitytype opcd_entity.entitytype_id%type;
l_clob CLOB: = empty_clob();
Start
apex_collection.create_or_truncate_collection (p_collection_name-online 'CLOB_CONTENT');
DBMS_LOB.CREATETEMPORARY (l_clob, false, dbms_lob. SESSION);

Select name
entitytype_id
general_text
in l_name
l_entitytype
l_clob
of opcd_entity
where id =: P9_ID;

: P9_NAME: = l_name;
: P9_ENTITYTYPE: = l_entitytype;

apex_collection.add_member (p_collection_name-online 'CLOB_CONTENT'
p_clob001-online l_clob
);
end;

* I expanded function clob_get of Carl with var oEditor = FCKeditorAPI.GetInstance ('P9_CLOB');
(In your case, P9_CLOB would be P59_CONT).

* That I added an addLoadEvent in the foot of the region in the region that holds my agenda of the HTML editor.

This way the clob data are updated automatically the HTML Editor element when I load the page (at least in my app ;-)).

I hope this will help you to tackle the problem.

With respect,
Ramon van der Weiden

Tags: Database

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Published by: user3924223 on January 30, 2009 06:51
user3924223 wrote:
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I've highlighted the comment tag. the highlighted, I need to recover ' time changed according to the dtd VSG mail 25/01/2013 14:27.» SVK, & #xD; & #xA; Recipient added by mail from Richard dtd 20/02/2013 09:45. SVK" of the value attribute.
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<? XML version = "1.0"? >
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< GP2AccountStatus Value = "P" > < / GP2AccountStatus >
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< GP2ParentID Value = '16649' > < / GP2ParentID >
< StatementPerspective Value = "D" > < / StatementPerspective >
< DBEntity ValueID = "2" > < / DBEntity >
< ValueID DisplayClientName = "6892067" Name = "XXXXXXX, NEW YORK" > < / DisplayClientName >
< FXRates >
< FXRate >
< of Value = "EUR" > < / From >
< value = "Us $" > < /pour >
< / FXRate >
< / FXRates >
< ShowFXRates Value = "T" > < / ShowFXRates >
< OfficialMTMs Value = "F" > < / OfficialMTMs >
< ExcludeStructuredTrades Value = "F" > < / ExcludeStructuredTrades >
< ValueID = "1" DisclaimerID > < / DisclaimerID >
< TradeRisk Value = "F" > < / TradeRisk >
< MTMsInTradeCurrency Value = "F" > < / MTMsInTradeCurrency >
< / ValuationRequest >
Thanks in advance.

with t as)

Select xmltype (')

http://www.w3.org/2001/XMLSchema-instance"container ="http://www.w3.org/2001/XMLSchema"ValueID ="169821"Version ="2.6"xmlns ="http://XBank.FxVals/ProcessValuationRequest.xsd"Status ="AC">

ActiveChangesApproved

[email protected]]">

') double x

)

Select comment_text

t,.

XMLTable)

XmlNamespaces (default 'http://XBank.FxVals/ProcessValuationRequest.xsd'),

«ValuationRequest / / comment»

go x

columns

comment_text varchar2 (200) path "@Value"

)

/

COMMENT_TEXT
--------------------------------------------------------------------------------------------------------------------------------------
Time changed according to the dtd VSG mail 25/01/2013 14:27. Beneficiary SVK added according to mail from Richard dtd 20/02/2013 09:45. SVK

SQL >

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Then I can do:

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 15  ;

OPTOUTTIME                          MAILINGLIST                    REASON
----------------------------------- ------------------------------ --------------------------------------------------------------------------------
09/05/12 22:40:00,000000 +02:00     information                    Subscriber confirmed
07/06/12 22:30:00,000000 +02:00     information                    Subscriber confirmed
14/06/12 00:20:00,000000 +02:00     information                    Subscriber confirmed
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Hi guys,.

Before I post my questions, I think it's better for me to give you guys my first understandings so that it is easier to understand where / if I have gone wrong...

I use Windows XP and Oracle 10 g
------------------------------------------------------------------------------------------------------------------------------------------------------------------

Non-unicode client - a client program that needs to use the code page of the operating system for the mapping of unicode data retrieved from the database as well as the support to display/insert characters from the code page to the database.
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Therefore, when you use a non-unicode client

(1) we define the code page of the OS (Control Panel - regional and language of the parameter - advance - the language for non-unicode programs) to the code page that contain the characters that we will view/insert.

(2) we also defined the NLS_LANG characterset on the character set of code page, that we'll insert so that when we do an insert (for example in thai), oracle will and automatic conversion to Unicode can take place. This is also true when recover us the database unicode data so that the correct character set conversion can take place.

INSERTION OF
THAI->-> UNICODE conversion

RECOVERY OF
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I hope that my basic understanding is correct up to this point.
---------------------------------------------------------------------------------------------------------------

Unicode client - a client program that supports display/inserting unicode characters without the need to set the code page of the operating system (Control Panel - regional and language setting - control - language for non-unicode programs advance)
For example isqlplus http or SQL Developer

However,.

(1) there are still set the NLS_LANG so that the correct conversion can take place between the client and the database.
For example, when the recovery if we set NLS_LANG value ZHS16GBK (Chinese) character and store data in Unicode in the database is for example (THAI), then the conversion would be a mistake.
It's a supported unicode client, then the NLS_LANG character set should be set to UNICODE as well.

---------------------------------------------------------------------------------------------------------------------------

Those are my questions
* Important - please help if you're busy and don't have the time to answer the remaining questions

(* Q1) if I had to use a unicode client, what should I put my character NLS_LANG set?
AMERICAN_AMERICA. UTF8?

(* T2) where can I put the NLS_LANG information of character in SQL Developer, I know there is a metalink for setting NLS_LANG using isqlplus but I cant seem to google each led for SQL developer.

Q3) is my basic understanding of up to this point? If no, please explain in a term more widespread that I'm really not familiar with character sets code page, unicode and fonts, glyphs...

A unicode client (Q4) didn't need to refer to the OS codepage (regional and language updates), y at - it a code page UNICODE for the customer to refer to, or is there an available window API?

Q5)

, there are still set the NLS_LANG so that the correct conversion can take place between the customer and the > > database.
For example, when recovery if we set NLS_LANG value ZHS16GBK (Chinese) character and the data store in > > unicode in the database is for example (THAI), then the conversion would be erroneous.

I'm just on this point for customer UNICODE supported?
--------------------------------------------------------------------------------------------------------------------------

Thank you for spending the time to read my questions and I hope to hear soon tips from you guys.
Million thanks again for sharing.

Best regards
Noob, but eager to learn
The requirement to always set NLS_LANG is not true for JDBC, which ignores the NLS_LANG altogether. Java programs extract the textual data in string variables, which uses Unicode UTF-16 by design. JDBC defines the conversion of character sets so that data is converted between UTF - 16 and the database or the national character set.

The obligation to set NLS_LANG is not generally true for the OIC, either. The first call to a problem of the BEAK may be OCIEnvNlsCreate(). This call has two parameters that allow the caller to set the character set to use for the text of VARCHAR2/TANK/LONG/CLOB/statement and the character set to be used for NCHAR/NVARCHAR2/NCLOB. Only if these character sets is specified as 0, character set NLS_LANG is used. Also, the OIC programs can specify different character for each binding sets or set the variable (i.e. the buffer input/output). Note: The OIC programs always use NLS_LANG to initialize the language settings and the territory for the client program and the database session. Only the character set can be specified is OCIEnvNlsCreate().

OCIEnvNlsCreate() can specify the client character set to UTF-16 (platform boutien) format. This is not possible with NLS_LANG.

Various interfaces based on the BEAK, such as ODBC Oracle and .NET for the ODP, explicitly initialize OCI with character set Unicode and therefore ignore the NLS_LANG character set as well.

Thnx,
Sergiusz

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