Wednesday, July 23, 2008

Qualified XSD Schema in BPEL/ESB

Maybe you have met this kind of problems to say that the input data is received correct, but its values can't be accessed through XPATH before as reporting the Null error.

Once this problem occurs, please check one setting: elementFormDefault="qualified", in XSD schema containing the elements or attributes mapping to the XML file.

This important attribute is on schema tag in XSD, which means all the elments inside are qualified and then can be used correctly.

Such as:
<schema attributeformdefault="unqualified" elementFormDefault="qualified" targetNamespace="" xmlns="">

Tuesday, July 22, 2008

Installing a loopback adapter for Oracle SOA Suite

A loopback adapter is required in any of these scenarios:

  • you are installing on a DHCP computer.

  • you are installing on a non-networked computer and plan to connect the computer to a network after installation.

  • you are installing on a computer with multiple aliases.

  • you are installing on a networked computer (with static IP or DHCP), but you want to be able to run Oracle Application Server when you take the computer off the network..

Using hostname during installing Oracle SOA Suite

To ensure that the installer uses the local hostname, you have two options:
  • Option 1: Start up the installer with the OUI_HOSTNAME parameter. This parameter specifies the hostname that you want to use.
  • E:\> setup.exe

  • Option 2: Before running the installer, add a line to the C:\winnt\system32\drivers\etc\hosts file with the following format:
  • IP_address hostname.domainname hostname

    This line should come after the localhost line in the file.
    Replace IP_address with the loopback adapter's IP address. This should be a non-routable IP address.
    Replace hostname and domainname with the appropriate values.

    Example: mycomputer

If you have already installed Oracle Application Server, you can change the hostname after installation using the change IP/hostname procedures documented in the Oracle Application Server Administrator's Guide.

Monday, July 21, 2008

Domain Value Mapping in BPEL process

As we know, DVM is an important function during data transfer. It can be used not only in ESB project, but also in BPEL Process, even though it has to be defined in ESB Control.

It is invoked by this xpath function 'orcl:lookup-dvm' provided by Oracle.

Here is the example:


There are totally five input params:

1st: DVM name
2nd: Source column name defined in the DVM.
3rd: XPath of source data to be transferred, which will not be wrapped as string. In another word, there is no double quote marks at the begining and end of it. If it uses double quote marks, it means this param is a constant.
4th: Target column name
5th: Default value. If it is from a BPEL variable, please don't quote it with double quote marks.

It is simple, but you have to pay attention to the 3rd and 5th parameters if the value of them are dynamic.

About obtaining the modification time of files using FTP Adapter

Maybe some of you met this kind of problems which said the modification time of files on FTP server were not set properly or related information of it were reported during runtime after configuring the FTP Adapter. Even though the time format was correct through verified with the file system listing command: quote mdtm filename. But it would be the problem of time zone either.

To solve this problem, the easiest way is to erase these below properties: FileModificationTime and ModificationTimeFormat from the FTP Adapter wsdl file.

Then test it and it will work correctly.

Sunday, July 20, 2008

I am coming

Oh... it is unbelievable that i have a blogger of my own. I will post what i think and what i have seen on it and share them with all of you. Hoep you guys like it.