[jira] [Updated] (JEXL-379) Allow new to use class identifier

["Henri Biestro (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/JEXL-379?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Henri Biestro updated JEXL-379:
-------------------------------
    Description: 
WHAT:
The Java syntax for new is easier/nicer to use than the current JEXL one that forces to use a fully qualified class name (FQCN) to instantiate an object. The improvement will allow using the Java new syntax using either an FQCN (as identifier) or just an identifier.
HOW:
The grammar is augmented to allow the 'new qualified_class_name(<args>)' syntax. Provision is to be made to allow an 'import'-like mechanism so class identifiers can be resolved (JexlContext extension).

Canonical example is:
{code}
//-------------------------------------------------------------------
// send a POST Request
//-------------------------------------------------------------------
#pragma jexl.import  java.net
#pragma jexl.import  java.io
{
    "execute" : (sURL, jsonData) -> {
        let url = new URL(sURL);
        let con = url.openConnection();
        con.setRequestMethod("POST");
        con.setRequestProperty("Accept", "application/json");

        // send data
        if (jsonData != null) {
            con.setRequestProperty("Content-Type", "application/json; utf-8");
            con.setDoOutput(true);
            let outputStream = con.getOutputStream();
            let input = jsonData.getBytes("utf-8");
            outputStream.write(input, 0, size(input));
        }

        // read response
        let responseCode = con.getResponseCode();
        let inputStream = con.getInputStream();
        let response = new StringBuffer();
        if (inputStream != null) {
            let in = new BufferedReader(new InputStreamReader(inputStream));
            var inputLine = "";
            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine);
            }
            in.close();
        }
        response.toString();
    }
}
{code}

  was:
WHAT:
The Java syntax for new is easier/nicer to use than the current JEXL one that forces to use a fully qualified class name (FQCN) to instantiate an object. The improvement will allow using the Java new syntax using either an FQCN (as identifier) or just an identifier.
HOW:
The grammar is augmented to allow the 'new qualified_class_name(<args>)' syntax. Provision is to be made to allow an 'import'-like mechanism so class identifiers can be resolved (JexlContext extension).


> Allow new to use class identifier
> ---------------------------------
>
>                 Key: JEXL-379
>                 URL: https://issues.apache.org/jira/browse/JEXL-379
>             Project: Commons JEXL
>          Issue Type: Improvement
>    Affects Versions: 3.2.1
>            Reporter: Henri Biestro
>            Assignee: Henri Biestro
>            Priority: Major
>             Fix For: 3.3
>
>
> WHAT:
> The Java syntax for new is easier/nicer to use than the current JEXL one that forces to use a fully qualified class name (FQCN) to instantiate an object. The improvement will allow using the Java new syntax using either an FQCN (as identifier) or just an identifier.
> HOW:
> The grammar is augmented to allow the 'new qualified_class_name(<args>)' syntax. Provision is to be made to allow an 'import'-like mechanism so class identifiers can be resolved (JexlContext extension).
> Canonical example is:
> {code}
> //-------------------------------------------------------------------
> // send a POST Request
> //-------------------------------------------------------------------
> #pragma jexl.import  java.net
> #pragma jexl.import  java.io
> {
>     "execute" : (sURL, jsonData) -> {
>         let url = new URL(sURL);
>         let con = url.openConnection();
>         con.setRequestMethod("POST");
>         con.setRequestProperty("Accept", "application/json");
>         // send data
>         if (jsonData != null) {
>             con.setRequestProperty("Content-Type", "application/json; utf-8");
>             con.setDoOutput(true);
>             let outputStream = con.getOutputStream();
>             let input = jsonData.getBytes("utf-8");
>             outputStream.write(input, 0, size(input));
>         }
>         // read response
>         let responseCode = con.getResponseCode();
>         let inputStream = con.getInputStream();
>         let response = new StringBuffer();
>         if (inputStream != null) {
>             let in = new BufferedReader(new InputStreamReader(inputStream));
>             var inputLine = "";
>             while ((inputLine = in.readLine()) != null) {
>                 response.append(inputLine);
>             }
>             in.close();
>         }
>         response.toString();
>     }
> }
> {code}



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