dicttabinfo.hpp

mysql-5.0.22.tar.gz源码包

/* Copyright (C) 2003 MySQL AB

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

#ifndef DICT_TAB_INFO_HPP
#define DICT_TAB_INFO_HPP

#include "SignalData.hpp"
#include <AttributeDescriptor.hpp>
#include <SimpleProperties.hpp>
#include <ndb_limits.h>
#include <trigger_definitions.h>
#include <NdbSqlUtil.hpp>

#ifndef my_decimal_h

// sql/my_decimal.h requires many more sql/*.h new to ndb
// for now, copy the bit we need  TODO proper fix

#define DECIMAL_MAX_LENGTH ((8 * 9) - 8)

#ifndef NOT_FIXED_DEC
#define NOT_FIXED_DEC                   31
#endif

C_MODE_START
extern int decimal_bin_size(int, int);
C_MODE_END

inline int my_decimal_get_binary_size(uint precision, uint scale)
{
  return decimal_bin_size((int)precision, (int)scale);
}

#endif

#define DTIMAP(x, y, z) \
  { DictTabInfo::y, offsetof(x, z), SimpleProperties::Uint32Value, 0, (~0), 0 }

#define DTIMAP2(x, y, z, u, v) \
  { DictTabInfo::y, offsetof(x, z), SimpleProperties::Uint32Value, u, v, 0 }

#define DTIMAPS(x, y, z, u, v) \
  { DictTabInfo::y, offsetof(x, z), SimpleProperties::StringValue, u, v, 0 }

#define DTIMAPB(x, y, z, u, v, l) \
  { DictTabInfo::y, offsetof(x, z), SimpleProperties::BinaryValue, u, v, \
                     offsetof(x, l) }

#define DTIBREAK(x) \
  { DictTabInfo::x, 0, SimpleProperties::InvalidValue, 0, 0, 0 }

class DictTabInfo {
  /**
   * Sender(s) / Reciver(s)
   */
  // Blocks
  friend class Backup;
  friend class Dbdict;
  friend class Ndbcntr;
  friend class Trix;
  friend class DbUtil;
  // API
  friend class NdbSchemaOp;
  
  /**
   * For printing
   */
  friend bool printDICTTABINFO(FILE * output, 
                               const Uint32 * theData, 
                               Uint32 len, 
                               Uint16 receiverBlockNo);

public:
  enum RequestType {
    CreateTableFromAPI  = 1,
    AddTableFromDict    = 2, // Between DICT's
    CopyTable           = 3, // Between DICT's
    ReadTableFromDiskSR = 4, // Local in DICT
    GetTabInfoConf      = 5,
    AlterTableFromAPI  = 6
  };

  enum KeyValues {
    TableName          = 1,  // String, Mandatory
    TableId            = 2,  //Mandatory between DICT's otherwise not allowed
    TableVersion       = 3,  //Mandatory between DICT's otherwise not allowed
    TableLoggedFlag    = 4,  //Default Logged
    NoOfKeyAttr        = 5,  //Default 1
    NoOfAttributes     = 6,  //Mandatory
    NoOfNullable       = 7,  //Deafult 0
    NoOfVariable       = 8,  //Default 0
    TableKValue        = 9,  //Default 6
    MinLoadFactor      = 10, //Default 70
    MaxLoadFactor      = 11, //Default 80
    KeyLength          = 12, //Default 1  (No of words in primary key)
    FragmentTypeVal    = 13, //Default AllNodesSmallTable
    TableTypeVal       = 18, //Default TableType::UserTable
    PrimaryTable       = 19, //Mandatory for index otherwise RNIL
    PrimaryTableId     = 20, //ditto
    IndexState         = 21,
    InsertTriggerId    = 22,
    UpdateTriggerId    = 23,
    DeleteTriggerId    = 24,
    CustomTriggerId    = 25,
    FrmLen             = 26,
    FrmData            = 27,
    FragmentCount      = 128, // No of fragments in table (!fragment replicas)
    FragmentDataLen    = 129,
    FragmentData       = 130, // CREATE_FRAGMENTATION reply
    TableEnd           = 999,
    
    AttributeName          = 1000, // String, Mandatory
    AttributeId        = 1001, //Mandatory between DICT's otherwise not allowed
    AttributeType          = 1002, //for osu 4.1->5.0.x
    AttributeSize          = 1003, //Default DictTabInfo::a32Bit
    AttributeArraySize     = 1005, //Default 1
    AttributeKeyFlag       = 1006, //Default noKey
    AttributeStorage       = 1007, //Default MainMemory
    AttributeNullableFlag  = 1008, //Default NotNullable
    AttributeDKey          = 1010, //Default NotDKey
    AttributeExtType       = 1013, //Default ExtUnsigned
    AttributeExtPrecision  = 1014, //Default 0
    AttributeExtScale      = 1015, //Default 0
    AttributeExtLength     = 1016, //Default 0
    AttributeAutoIncrement = 1017, //Default false
    AttributeDefaultValue  = 1018, //Default value (printable string)
    AttributeEnd           = 1999  //
  };
  // ----------------------------------------------------------------------
  // Part of the protocol is that we only transfer parameters which do not
  // have a default value. Thus the default values are part of the protocol.
  // ----------------------------------------------------------------------


  
  // FragmentType constants
  enum FragmentType {
    AllNodesSmallTable = 0,
    AllNodesMediumTable = 1,
    AllNodesLargeTable = 2,
    SingleFragment = 3
  };
  
  // TableType constants + objects
  enum TableType {
    UndefTableType = 0,
    SystemTable = 1,
    UserTable = 2,
    UniqueHashIndex = 3,
    HashIndex = 4,
    UniqueOrderedIndex = 5,
    OrderedIndex = 6,
    // constant 10 hardcoded in Dbdict.cpp
    HashIndexTrigger = 10 + TriggerType::SECONDARY_INDEX,
    SubscriptionTrigger = 10 + TriggerType::SUBSCRIPTION,
    ReadOnlyConstraint = 10 + TriggerType::READ_ONLY_CONSTRAINT,
    IndexTrigger = 10 + TriggerType::ORDERED_INDEX
  };
  static inline bool
  isTable(int tableType) {
    return
      tableType == SystemTable ||
      tableType == UserTable;
  }
  static inline bool
  isIndex(int tableType) {
    return
      tableType == UniqueHashIndex ||
      tableType == HashIndex ||
      tableType == UniqueOrderedIndex ||
      tableType == OrderedIndex;
  }
  static inline bool
  isUniqueIndex(int tableType) {
    return
      tableType == UniqueHashIndex ||
      tableType == UniqueOrderedIndex;
  }
  static inline bool
  isNonUniqueIndex(int tableType) {
    return
      tableType == HashIndex ||
      tableType == OrderedIndex;
  }
  static inline bool
  isHashIndex(int tableType) {
    return
      tableType == UniqueHashIndex ||
      tableType == HashIndex;
  }
  static inline bool
  isOrderedIndex(int tableType) {
    return
      tableType == UniqueOrderedIndex ||
      tableType == OrderedIndex;
  }

  // Object state for translating from/to API
  enum ObjectState {
    StateUndefined = 0,
    StateOffline = 1,
    StateBuilding = 2,
    StateDropping = 3,
    StateOnline = 4,
    StateBackup = 5,
    StateBroken = 9
  };

  // Object store for translating from/to API
  enum ObjectStore {
    StoreUndefined = 0,
    StoreTemporary = 1,
    StorePermanent = 2
  };
  
  // AttributeSize constants
  STATIC_CONST( aBit = 0 );
  STATIC_CONST( an8Bit = 3 );
  STATIC_CONST( a16Bit = 4 );
  STATIC_CONST( a32Bit = 5 );
  STATIC_CONST( a64Bit = 6 );
  STATIC_CONST( a128Bit = 7 );
    
  // Table data interpretation
  struct Table {
    char   TableName[MAX_TAB_NAME_SIZE];
    Uint32 TableId;
    char   PrimaryTable[MAX_TAB_NAME_SIZE]; // Only used when "index"
    Uint32 PrimaryTableId;
    Uint32 TableLoggedFlag;
    Uint32 NoOfKeyAttr;
    Uint32 NoOfAttributes;
    Uint32 NoOfNullable;
    Uint32 NoOfVariable;
    Uint32 TableKValue;
    Uint32 MinLoadFactor;
    Uint32 MaxLoadFactor;
    Uint32 KeyLength;
    Uint32 FragmentType;
    Uint32 TableStorage;
    Uint32 TableType;
    Uint32 TableVersion;
    Uint32 IndexState;
    Uint32 InsertTriggerId;
    Uint32 UpdateTriggerId;
    Uint32 DeleteTriggerId;