Examples of org.zkoss.zk.ui.util.ExecutionCleanup.cleanup()

org.zkoss.zk.ui.util.ExecutionCleanup.cleanup()

called when an execution is about to be destroyed.

If this method throws an exception, the stack trace will be logged, and the error message will be displayed at the client.

When this method is invoked, the execution is still activated, so you can create components here. @param exec the exection to clean up. @param parent the previous execution, or null if no previous at all @param errs a list of exceptions (java.lang.Throwable) if any exceptionoccured before this method is called, or null if no exeption at all. Note: you can manipulate the list directly to add or clean up exceptions. For example, if exceptions are fixed correctly, you can call errs.clear() such that no error message will be displayed at the client.

  public void invokeExecutionCleanups(Execution exec, Execution parent, List errs) {
    if (_execCleans != null) {
      for (Iterator it = _execCleans.iterator(); it.hasNext();) {
        final ExecutionCleanup listener = (ExecutionCleanup)it.next();
        try {
          listener.cleanup(exec, parent, errs);
        } catch (Throwable ex) {
          log.error("Failed to invoke "+listener, ex);
          if (errs != null) errs.add(ex);
        }
      }

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