Examples of co.cask.tephra.TransactionAware

co.cask.tephra.TransactionAware

// dataSet is one example of component that interacts with tx logic Transaction tx = txClient.start(); dataSet.startTx(tx); // notifying about new transaction dataSet.write(...); // ... do other operations on dataSet Collection changes = dataSet.getTxChanges(); boolean rollback = true; if (txClient.canCommit(changes)) { // checking conflicts before commit, if none, commit tx if (dataSet.commitTx()) { // try persisting changes if (txClient.commit(tx)) { // if OK, make tx visible; if not - tx stays invisible to others dataSet.postTxCommit(); // notifying dataset about tx commit success via callback rollback = false; } } } if (rollback) { // if there are conflicts (or cannot commit), try rollback changes if (dataSet.rollbackTx()) { // try undo changes txClient.abort(tx); // if OK, make tx visible; if not - tx stays invisible to others } }

  protected final <T> DataSetManager<T> getDataset(String datasetInstanceName)
    throws Exception {
    @SuppressWarnings("unchecked")
    final T dataSet = (T) datasetFramework.getDataset(datasetInstanceName, new HashMap<String, String>(), null);
    try {
      TransactionAware txAwareDataset = (TransactionAware) dataSet;
      final TransactionContext txContext =
        new TransactionContext(txSystemClient, Lists.newArrayList(txAwareDataset));
      txContext.start();
      return new DataSetManager<T>() {
        @Override

Examples of co.cask.tephra.TransactionAware

Related Classes of co.cask.tephra.TransactionAware