/** {@inheritDoc} */
public Object getScriptedObject(ScriptSource scriptSourceLocator, Class[] scriptInterfaces)
throws IOException, ScriptCompilationException {
// TODO: how to do this when running under Tomcat?
ContextHandler handler = WebAppContext.getCurrentWebAppContext();
String basePath = "";
if (handler != null) {
File root = handler.getBaseResource().getFile();
if (root != null && root.exists()) {
basePath = root.getAbsolutePath() + File.separator + "WEB-INF" + File.separator;
}
}
String strScript = scriptSourceLocator.getScriptAsString();
if (scriptInterfaces.length > 0) {
try {
PySystemState state = new PySystemState();
if (!"".equals(basePath)) {
// Add webapp paths that can contain classes and .jar files to python search path
state.path.insert(0, Py.newString(basePath + "classes"));
File jarRoot = new File(basePath + "lib");
if (jarRoot.exists()) {
for (String filename :
jarRoot.list(
new FilenameFilter() {
public boolean accept(File dir, String name) {
return (name.endsWith(".jar"));
}
})) {
state.path.insert(1, Py.newString(basePath + "lib" + File.separator + filename));
}
}
}
PythonInterpreter interp = new PythonInterpreter(null, state);
interp.exec(strScript);
PyObject getInstance = interp.get("getInstance");
if (!(getInstance instanceof PyFunction)) {
throw new ScriptCompilationException("\"getInstance\" is not a function.");
}
PyObject _this;
if (arguments == null) {
_this = ((PyFunction) getInstance).__call__();
} else {
PyObject[] args = new PyObject[arguments.length];
for (int i = 0; i < arguments.length; i++) {
args[i] = new PyJavaInstance(arguments[i]);
}
_this = ((PyFunction) getInstance).__call__(args);
}
return _this.__tojava__(scriptInterfaces[0]);
} catch (Exception ex) {
logger.error("Error while loading script.", ex);
if (ex instanceof IOException) {
// Raise to caller
throw (IOException) ex;
} else if (ex instanceof ScriptCompilationException) {
// Raise to caller
throw (ScriptCompilationException) ex;
}
throw new ScriptCompilationException(ex.getMessage());
}
}
logger.error("No scriptInterfaces provided.");
return null;
}
