如何在 wso2 ESB 中对多个参数使用过滤器

Question

I know to check for a parameter, we have to do something like this

use boolean xpath function to verify if your property exist:

<filter xpath="boolean(get-property('ModifiedOn'))">
   <then> 
      ...
   </then>
   <else>
      ...
   </else>
</filter>

can you please tell me how can i check if more than one parameter is there. I mean we need to check 3 parameters. how can we do this?

Answer 1

Specify all of your criteria that must be true and evaluate as a boolean:

<filter xpath="boolean(boolean(get-property('ModifiedOn') and 
                       boolean(get-property('prop2')) and 
                       boolean(get-property('prop3'))">
   <then> 
      ...
   </then>
   <else>
      ...
   </else>
</filter>

Answer 2

As a solution you can set the parameters as below:

<filter xpath="fn:number(get-property('SIMPLE_SER_AMT')) > fn:number(get-property('SECURE_SER_AMT'))">

For more information you can refer Sample 156: Service Integration with specifying the receiving sequence available on [1]

Hope this information will help you.

Answer 3

For my case none of the listed solutions worked. I am using WSO2 version: 6.5 I was able to make multiple conditions as follows:

<filter regex="true" source="boolean(get-property('VALUE1')) and boolean(get-property('VALUE2')) and boolean(get-property('VALUE3'))">
<then> ...

This expression will make sure that value 1 and 2 and 3 are filled before running the code in the 'then' clause.