text: //------------------------------------------------------------------------------
  /*
      This file is part of rippled: https://github.com/ripple/rippled
      Copyright (c) 2012, 2013 Ripple Labs Inc.
  
      Permission to use, copy, modify, and/or distribute this software for any
      purpose  with  or without fee is hereby granted, provided that the above
      copyright notice and this permission notice appear in all copies.
  
      THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
      WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
      MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
      ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
      WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
      ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
      OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
  //==============================================================================
  
  #ifndef RIPPLE_APP_TX_TRANSACTIONMETA_H_INCLUDED
  #define RIPPLE_APP_TX_TRANSACTIONMETA_H_INCLUDED
  
  #include <ripple/beast/utility/Journal.h>
  #include <ripple/protocol/STArray.h>
  #include <ripple/protocol/STLedgerEntry.h>
  #include <ripple/protocol/TER.h>
  #include <boost/container/flat_set.hpp>
  #include <boost/optional.hpp>
  
  namespace ripple {
  
  class TxMeta
  {
  private:
      struct CtorHelper
      {
          explicit CtorHelper() = default;
      };
      template <class T>
      TxMeta(
          uint256 const& txID,
          std::uint32_t ledger,
          T const& data,
          CtorHelper);
  
  public:
      TxMeta(uint256 const& transactionID, std::uint32_t ledger);
      TxMeta(uint256 const& txID, std::uint32_t ledger, Blob const&);
      TxMeta(uint256 const& txID, std::uint32_t ledger, std::string const&);
      TxMeta(uint256 const& txID, std::uint32_t ledger, STObject const&);
  
      uint256 const&
      getTxID()
      {
          return mTransactionID;
      }
      std::uint32_t
      getLgrSeq()
      {
          return mLedger;
      }
      int
      getResult() const
      {
          return mResult;
      }
      TER
      getResultTER() const
      {
          return TER::fromInt(mResult);
      }
      std::uint32_t
      getIndex() const
      {
          return mIndex;
      }
  
      void
      setAffectedNode(uint256 const&, SField const& type, std::uint16_t nodeType);
      STObject&
      getAffectedNode(SLE::ref node, SField const& type);  // create if needed
      STObject&
      getAffectedNode(uint256 const&);
  
      /** Return a list of accounts affected by this transaction */
      boost::container::flat_set<AccountID>
      getAffectedAccounts(beast::Journal j) const;
  
      Json::Value
      getJson(JsonOptions p) const
      {
          return getAsObject().getJson(p);
      }
      void
      addRaw(Serializer&, TER, std::uint32_t index);
  
      STObject
      getAsObject() const;
      STArray&
      getNodes()
      {
          return (mNodes);
      }
  
      void
      setDeliveredAmount(STAmount const& delivered)
      {
          mDelivered.reset(delivered);
      }
  
      STArray const&
      getHookExecutions() const
      {
          return *mHookExecutions;
      }
  
      void
      setHookExecutions(const STArray& hookExecutions)
      {
          mHookExecutions = hookExecutions;
      }
  
      bool
      hasHookExecutions() const
      {
          return static_cast<bool>(mHookExecutions);
      }
  
      STAmount
      getDeliveredAmount() const
      {
          assert(hasDeliveredAmount());
          return *mDelivered;
      }
  
      bool
      hasDeliveredAmount() const
      {
          return static_cast<bool>(mDelivered);
      }
  
  private:
      uint256 mTransactionID;
      std::uint32_t mLedger;
      std::uint32_t mIndex;
      int mResult;
  
      boost::optional<STAmount> mDelivered;
      boost::optional<STArray> mHookExecutions;
  
      STArray mNodes;
  };
  
  }  // namespace ripple
  
  #endif
  