private String filterNew(InvocationChain chain) throws Exception {
Action action = chain.getAction();
super.setInput(action.getInput());
action.setInput(this);
this.action.set(action);
return chain.invoke();
}
/**
* Filters the action, begining a transaction before the action's execution and commiting or
* rollbacking the trasaction after the action's exection depending on the result.
*/
public String filter(InvocationChain chain) throws Exception {
Action action = chain.getAction();
Input input = action.getInput();
if (onlyPost) {
// only execute for POST...
String method = input.getProperty("method");
boolean isPost = method != null && method.equalsIgnoreCase("post");
if (!isPost) return chain.invoke();
}
Transaction transaction = (Transaction) input.getValue(transactionKey);
// special case: two actions with transaction filter being called in a chain:
/*
* if (transaction != null && (transaction.wasCommited() || transaction.wasRolledBack())) {
*
* input.removeValue(transactionKey);
*
* transaction = (Transaction) input.getValue(transactionKey); }
*
* // by Sergio: You can now freely re-use transaction (since 1.16)
*/
if (transaction == null) {
Debug.log(NAME, "Transaction was NULL inside TransactionFilter!!!");
throw new FilterException(
"Cannot find transaction in action's " + "input with the given key: " + transactionKey);
}
try {
Debug.log(NAME, "Beginning transaction...");
transaction.begin();
Debug.log(NAME, "Transaction was begun! Will invoke action...");
String result = chain.invoke();
boolean shouldRollback = resultsForRollback.contains(result);
boolean shouldCommit = resultsForCommit.contains(result);
if (shouldCommit || (!shouldCommit && !shouldRollback)) {
Debug.log(NAME, "Result was ok! Will commit the transaction...", "Result=", result);
transaction.commit();
Debug.log(NAME, "Transaction was committed!");
} else {
Debug.log(NAME, "Result was not ok! Will rollback the transaction...", "Result=", result);
transaction.rollback();
Debug.log(NAME, "Transaction was rolled back!");
}
return result;
} catch (Exception e) {
e.printStackTrace();
// rollbacks the transcion if any error occours.
Debug.log(
NAME,
"An exception was thrown while executing action! Will try to rollback...",
"msg=",
e.getMessage());
if (transaction.isActive()) {
transaction.rollback();
Debug.log(NAME, "Transaction was rolled back!");
}
throw e;
}
}
