public <V> V executeScalar(Class returnType) {
Object value = executeScalar();
Converter converter = null;
try {
converter = Convert.getConverter(returnType);
return (V) converter.convert(value);
} catch (ConverterException e) {
throw new Sql2oException(
"Error occured while converting value from database to type " + returnType.toString(), e);
}
}
@SuppressWarnings("unchecked")
private Object convertParameter(Object value) {
if (value == null) {
return null;
}
Converter converter = getQuirks().converterOf(value.getClass());
if (converter == null) {
// let's try to add parameter AS IS
return value;
}
return converter.toDatabaseParam(value);
}
public <V> V executeScalar(Converter<V> converter) {
try {
//noinspection unchecked
return converter.convert(executeScalar());
} catch (ConverterException e) {
throw new Sql2oException("Error occured while converting value from database", e);
}
}