/**
   * {@inheritDoc}
   *
   * @param ctx
   */
  @Override
  public void prepareMarshal(GridCacheSharedContext ctx) throws IgniteCheckedException {
    super.prepareMarshal(ctx);

    if (ownedVals != null) {
      ownedValKeys = ownedVals.keySet();

      ownedValVals = ownedVals.values();

      for (Map.Entry<IgniteTxKey, CacheVersionedValue> entry : ownedVals.entrySet()) {
        GridCacheContext cacheCtx = ctx.cacheContext(entry.getKey().cacheId());

        entry.getKey().prepareMarshal(cacheCtx);

        entry.getValue().prepareMarshal(cacheCtx.cacheObjectContext());
      }
    }

    if (retVal != null && retVal.cacheId() != 0) {
      GridCacheContext cctx = ctx.cacheContext(retVal.cacheId());

      assert cctx != null : retVal.cacheId();

      retVal.prepareMarshal(cctx);
    }

    if (filterFailedKeys != null) {
      for (IgniteTxKey key : filterFailedKeys) {
        GridCacheContext cctx = ctx.cacheContext(key.cacheId());

        key.prepareMarshal(cctx);
      }
    }
  }
  /**
   * {@inheritDoc}
   *
   * @param ctx
   */
  @Override
  public void prepareMarshal(GridCacheSharedContext ctx) throws IgniteCheckedException {
    super.prepareMarshal(ctx);

    if (writes != null) marshalTx(writes, ctx);

    if (reads != null) marshalTx(reads, ctx);

    if (grpLockKey != null && grpLockKeyBytes == null)
      grpLockKeyBytes = ctx.marshaller().marshal(grpLockKey);

    if (dhtVers != null) {
      for (IgniteTxKey key : dhtVers.keySet()) {
        GridCacheContext cctx = ctx.cacheContext(key.cacheId());

        key.prepareMarshal(cctx);
      }

      dhtVerKeys = dhtVers.keySet();
      dhtVerVals = dhtVers.values();
    }

    if (txNodes != null) txNodesBytes = ctx.marshaller().marshal(txNodes);
  }