Report of queries / XML size more than 30 k...

Hello world

I'm generating a report repatriated, with IMAGES of the workspace, and it works very well up to a certain limit.

I have my query that returns a certain image, for a day of the month especified. If it's a party of the employee, the png (images with 1) images. If it's a weekend an another png image (orange image).

It works very well in the report:
[http://img141.imageshack.us/i/yearcalendar.jpg/]

When I tried to make this report as pdf, using report queries and a RTF composed of model, I want to use the Data Source for the report layout:
Data (Download) XML, to test my RTF(logical:P), but when this XML download overcomes 30.4 k, it gives me an error:

ORA-06502: PL/SQL: digital error or value: raw variable length too long

Note: I use the [http://www.oracle.com/technology/obe/hol08/apexprnt/apexprnt2_otn.htm]. The function that receives a BLOB and turns to CLOB for display of the image.

Can I configure only 30 KB XML somewhere? Or am I just crazy to do this? :)

Vitor,

In the APEX report rows are treated in a table of varchar2. A varchar2 can hold up to 32 k bytes. This concerns both report queries. This means that when you use the query of the OBE you referenced:

Select
employe_id,
first_name. » '|| name of last_name,
file name,
MimeType,
blob2clobase64 photo (photo)
of oehr_employees
where the photo is not null

... then all the column values for a line, as well as additional XML markup for each value, cannot be longer than 32 k bytes. When you work with images, you quickly hit this limit, because what blob2clobase64 are not, that it converts your image to a very long string. For APEX 4.0, we seek ways to lift this limitation. But for now - if you use report requests - you are limited to 32 k by rank. Please note, i.e. row, your report itself may be longer, so you can have as many lines, as long as none of them exceeds 32 k. There are however of the APIs available in APEX (apex_util.get_print_document) that allow you to directly call the print engine, provide your own style sheets and XML data. The XML data is stored in a BLOB, and it's up to you how to generate XML data. So, you will not be subject to this limitation.

Kind regards
Marc

Tags: Database

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