Method getInstance

src/org/apache/pig/scripting/ScriptEngine.java:281–294

Gets instance of the scriptEngine for the given scripting language @param scriptingLang ScriptEngine classname or keyword for the scriptingLang @return scriptengine for the given scripting language @throws IOException

(String scriptingLang)

     * @throws IOException
     */
    public static ScriptEngine getInstance(String scriptingLang)
            throws IOException {
        String scriptingEngine = scriptingLang;
        try {
            if (SupportedScriptLang.contains(scriptingLang)) {
                SupportedScriptLang supportedScriptLang = SupportedScriptLang.valueOf(scriptingLang);
                scriptingEngine = supportedScriptLang.getEngineClassName();
            }
            return (ScriptEngine) Class.forName(scriptingEngine).newInstance();
        } catch (Exception e) {
            throw new IOException("Could not load ScriptEngine: "
                    + scriptingEngine + " for "+scriptingLang+" (Supported langs: "+SupportedScriptLang.supportedScriptLangs+") : " + e, e);
        }
    }
    
    /**
     * Runs a script file.