Issue 305

As we discussed this specification internally it became
clear that the main difference between queries and expressions is that queries
have a context while expressions do not. One way of achieving this is to remove
queryLanguage from the process altogether. This is how the issue was originally
framed in the issue description. 

 

Another way of achieving this same goal but with fewer
changes would be to restore the query option in the <from> and <to>
variants that had queries with a variable as the context. 

 

Therefore, I propose the following to restore the
distinction between queries and expressions:

 

 
Change existing <to>
     query variant to match existing <from> expression variant. 

 

<to
expressionLanguage=”expr-lang”>expr</to>

 

 
restore the query option in the
     <from> and <to> that take variables and have them look and behave
     the same as propertyAlias queries 

 

<from
variable=”BPELVariableName” part=”NCName”?>

          <query
queryLanguage=”query-lang”?>?

query-exp

          </query>

</from>

 

<to
variable=”BPELVariableName” part=”NCName”?>

          <query
queryLanguage=”query-lang”?>?

              query-exp

          </query>

</to>

 

I appreciate any feedback on this issue before I embark on
submitting a formal proposal. The proposal will include the current version of
the spec with only the edits for this issue appearing as changes.

 

Thanks