JDev11g : Problem with Binding param (viewcriteria)

Question

When I bind some variables (2 type number and 2 type date) to viewCriteria and start the web site I get very strange problem.
The Binding param is almost random (I set on binding variables Binding position), and because of this I get constant SQL errors (Invalid type and so on).
Some data from server log
First start of server:
[ pre]
<strong>[8945]Binding null of type 12 for 1</strong>
<strong>[8946] Binding null of type 12 for 2</strong>
<strong>[8947] Binding param 3: 41</strong>
<strong>[8948] Binding null of type 12 for 4</strong>
<strong>[8949] Binding param 5: 148</strong>
<strong>[8950] Binding param 6: 148</strong>
<strong>[8951] Binding param 7: 148</strong>
Second start of server:
<strong>[9213] Binding null of type 12 for 1</strong>
<strong>[9214] Binding null of type 12 for 2</strong>
<strong>[9215] Binding null of type 12 for 3</strong>
<strong>[9216] Binding param 4: 41</strong>
<strong>[9217] Binding null of type 12 for 5</strong>
<strong>[9218] Binding param 6: 148</strong>
<strong>[9219] Binding param 7: 148</strong>
<strong>[9220] Binding param 8: 148</strong>
[ pre]
And view criteria query looks like this :
FROM_DATE (binded to variable fromDate_bind type DATE and binding position set to 1)
TO_DATE (binded to variable toDate_bind type DATE and binding position set to 3)
WORKER_ID (binded to variable worker_bind type NUMBER and binding position set to 2)
CLASS (binded to variable class_bind type NUMBER and binding position set to 4)
[ pre]( ( ( ( FROM_DATE &gt;= ? ) OR ( ? IS NULL ) ) AND (WORKER_ID = ? ) AND ( ( TO_DATE &lt;= ? ) OR ( ? IS NULL ) ) AND ( ( CLASS = ? ) OR ( ? IS NULL ) ) ) )
This viewCriteria is shown on page as af:query (simple search form) and outputs results on af:table.
Is there any way to solve this random parameter binding?
Rok Kogov&scaron;ek

Answer 1

check out the fileUpload article
Using the File Upload Component
http://developers.sun.com/prodtech/javatools/jscreator/learning/tutorials/2/file_upload.html