net.razorvine.pyro.serializer.PyroExceptionSerpent Maven / Gradle / Ivy
package net.razorvine.pyro.serializer;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import net.razorvine.pyro.PyroException;
import net.razorvine.serpent.IClassSerializer;
/**
* Serpent extension to be able to serialize PyroException objects with Serpent.
*
* @author Irmen de Jong ([email protected])
*/
public class PyroExceptionSerpent implements IClassSerializer {
@SuppressWarnings("unchecked")
public static Object FromSerpentDict(Map dict) {
Object[] args = (Object[]) dict.get("args");
PyroException ex = new PyroException((String)args[0]);
Map attrs = (Map)dict.get("attributes");
// we can only deal with a possible _pyroTraceback attribute
if(attrs.containsKey("_pyroTraceback"))
{
Object tb = attrs.get("_pyroTraceback");
// if the traceback is a list of strings, create one string from it
if(tb instanceof List) {
StringBuilder sb=new StringBuilder();
for(Object line: (List)tb) {
sb.append(line);
}
ex._pyroTraceback=sb.toString();
} else {
ex._pyroTraceback=(String)tb;
}
}
return ex;
}
public Map convert(Object obj) {
PyroException ex = (PyroException) obj;
Map dict = new HashMap();
// {'attributes':{},'__exception__':True,'args':('hello',),'__class__':'PyroError'}
dict.put("__class__", "PyroError");
dict.put("__exception__", true);
dict.put("args", new Object[] {ex.getMessage()});
Map attrMap = new HashMap();
if(ex._pyroTraceback!=null)
attrMap.put("_pyroTraceback", new String[]{ ex._pyroTraceback} ); // transform single string back into list
dict.put("attributes", attrMap);
return dict;
}
}