public void setParameterValues(Properties parameters) {
String enumClassName = parameters.getProperty("enumClass");
try {
enumClass = Class.forName(enumClassName).asSubclass(Enum.class);
} catch (ClassNotFoundException cfne) {
throw new HibernateException("Enum class not found", cfne);
}
String identifierMethodName =
parameters.getProperty("identifierMethod", DEFAULT_IDENTIFIER_METHOD_NAME);
try {
identifierMethod = enumClass.getMethod(identifierMethodName, new Class[0]);
identifierType = identifierMethod.getReturnType();
} catch (Exception e) {
throw new HibernateException("Failed to obtain identifier method", e);
}
type = (NullableType) TypeFactory.basic(identifierType.getName());
if (type == null)
throw new HibernateException("Unsupported identifier type " + identifierType.getName());
sqlTypes = new int[] {type.sqlType()};
String valueOfMethodName =
parameters.getProperty("valueOfMethod", DEFAULT_VALUE_OF_METHOD_NAME);
try {
valueOfMethod = enumClass.getMethod(valueOfMethodName, new Class[] {identifierType});
} catch (Exception e) {
throw new HibernateException("Failed to obtain valueOf method", e);
}
}
public void nullSafeSet(PreparedStatement st, Object value, int index)
throws HibernateException, SQLException {
try {
if (value == null) {
st.setNull(index, type.sqlType());
} else {
Object identifier = identifierMethod.invoke(value, new Object[0]);
type.set(st, identifier, index);
}
} catch (Exception e) {
throw new HibernateException(
"Exception while invoking identifierMethod '"
+ identifierMethod.getName()
+ "' of "
+ "enumeration class '"
+ enumClass
+ "'",
e);
}
}
public Object nullSafeGet(ResultSet rs, String[] names, Object owner)
throws HibernateException, SQLException {
Object identifier = type.get(rs, names[0]);
if (rs.wasNull()) {
return null;
}
try {
return valueOfMethod.invoke(enumClass, new Object[] {identifier});
} catch (Exception e) {
throw new HibernateException(
"Exception while invoking valueOf method '"
+ valueOfMethod.getName()
+ "' of "
+ "enumeration class '"
+ enumClass
+ "'",
e);
}
}
