wso2 esb xpath substring-before special characters Carriage Return

In wso2 esb,proxy service, I am trying to get a string with xpath substring-before who extract 1 line stop by an Carriage Return (cr). here is my property.

<property name="str_id" expression="fn:substring-before(get-property('INPUT_MESSAGE'),'&#13;')"/>

When I save my proxy configuration from the web administration console, the carriage return character is replace by a white space. When I use an other editor like notepad, I have no problem, the carriage return is not replace. But the problem, if I restart the wso2 esb server, it replace it by an white space again.

Any idea of the problem ? Is that an bug?

Best regards, Nicolas

Solution

Carriage return will systematically be removed from your mediation's xml definition.

One solution could be to import a text resource containing carriage return in ESB gov registry and use this resource in your xpath expression :

create a text file CR.txt with your text editor and insert a single character with ascii code 13 (use hexa view for exemple, don't just press 'return' or you may insert ascii code 10)
go to esb console, choose Browse under Registry, go to /_system/governance/trunk, choose Add resource and updload your file
change your xpath like this : <property name="str_id" expression="fn:substring-before(get-property('INPUT_MESSAGE'),syn:get-property('gov:trunk/CR.txt'))"/>