dicttabinfo.hpp

mysql-5.0.22.tar.gz源码包

    Uint32 CustomTriggerId;
    Uint32 FrmLen;
    char   FrmData[MAX_FRM_DATA_SIZE];
    Uint32 FragmentCount;
    Uint32 FragmentDataLen;
    Uint16 FragmentData[(MAX_FRAGMENT_DATA_BYTES+1)/2];
    
    void init();
  };

  static const
  SimpleProperties::SP2StructMapping TableMapping[];

  static const Uint32 TableMappingSize;

  // AttributeExtType values
  enum ExtType {
    ExtUndefined = NdbSqlUtil::Type::Undefined,
    ExtTinyint = NdbSqlUtil::Type::Tinyint,
    ExtTinyunsigned = NdbSqlUtil::Type::Tinyunsigned,
    ExtSmallint = NdbSqlUtil::Type::Smallint,
    ExtSmallunsigned = NdbSqlUtil::Type::Smallunsigned,
    ExtMediumint = NdbSqlUtil::Type::Mediumint,
    ExtMediumunsigned = NdbSqlUtil::Type::Mediumunsigned,
    ExtInt = NdbSqlUtil::Type::Int,
    ExtUnsigned = NdbSqlUtil::Type::Unsigned,
    ExtBigint = NdbSqlUtil::Type::Bigint,
    ExtBigunsigned = NdbSqlUtil::Type::Bigunsigned,
    ExtFloat = NdbSqlUtil::Type::Float,
    ExtDouble = NdbSqlUtil::Type::Double,
    ExtOlddecimal = NdbSqlUtil::Type::Olddecimal,
    ExtOlddecimalunsigned = NdbSqlUtil::Type::Olddecimalunsigned,
    ExtDecimal = NdbSqlUtil::Type::Decimal,
    ExtDecimalunsigned = NdbSqlUtil::Type::Decimalunsigned,
    ExtChar = NdbSqlUtil::Type::Char,
    ExtVarchar = NdbSqlUtil::Type::Varchar,
    ExtBinary = NdbSqlUtil::Type::Binary,
    ExtVarbinary = NdbSqlUtil::Type::Varbinary,
    ExtDatetime = NdbSqlUtil::Type::Datetime,
    ExtDate = NdbSqlUtil::Type::Date,
    ExtBlob = NdbSqlUtil::Type::Blob,
    ExtText = NdbSqlUtil::Type::Text,
    ExtBit = NdbSqlUtil::Type::Bit,
    ExtLongvarchar = NdbSqlUtil::Type::Longvarchar,
    ExtLongvarbinary = NdbSqlUtil::Type::Longvarbinary,
    ExtTime = NdbSqlUtil::Type::Time,
    ExtYear = NdbSqlUtil::Type::Year,
    ExtTimestamp = NdbSqlUtil::Type::Timestamp
  };

  // Attribute data interpretation
  struct Attribute {
    char   AttributeName[MAX_TAB_NAME_SIZE];
    Uint32 AttributeId;
    Uint32 AttributeType; // for osu 4.1->5.0.x
    Uint32 AttributeSize;
    Uint32 AttributeArraySize;
    Uint32 AttributeKeyFlag;
    Uint32 AttributeNullableFlag;
    Uint32 AttributeDKey;
    Uint32 AttributeExtType;
    Uint32 AttributeExtPrecision;
    Uint32 AttributeExtScale;
    Uint32 AttributeExtLength;
    Uint32 AttributeAutoIncrement;
    char   AttributeDefaultValue[MAX_ATTR_DEFAULT_VALUE_SIZE];
    
    void init();

    inline
    Uint32 sizeInWords()
    {
      return ((1 << AttributeSize) * AttributeArraySize + 31) >> 5;
    }

    // compute old-sty|e attribute size and array size
    inline bool
    translateExtType() {
      switch (AttributeExtType) {
      case DictTabInfo::ExtUndefined:
        return false;
      case DictTabInfo::ExtTinyint:
      case DictTabInfo::ExtTinyunsigned:
        AttributeSize = DictTabInfo::an8Bit;
        AttributeArraySize = AttributeExtLength;
	break;
      case DictTabInfo::ExtSmallint:
      case DictTabInfo::ExtSmallunsigned:
        AttributeSize = DictTabInfo::a16Bit;
        AttributeArraySize = AttributeExtLength;
	break;
      case DictTabInfo::ExtMediumint:
      case DictTabInfo::ExtMediumunsigned:
        AttributeSize = DictTabInfo::an8Bit;
        AttributeArraySize = 3 * AttributeExtLength;
	break;
      case DictTabInfo::ExtInt:	
      case DictTabInfo::ExtUnsigned:
        AttributeSize = DictTabInfo::a32Bit;
        AttributeArraySize = AttributeExtLength;
        break;
      case DictTabInfo::ExtBigint:
      case DictTabInfo::ExtBigunsigned:
        AttributeSize = DictTabInfo::a64Bit;
        AttributeArraySize = AttributeExtLength;
        break;
      case DictTabInfo::ExtFloat:
        AttributeSize = DictTabInfo::a32Bit;
        AttributeArraySize = AttributeExtLength;
        break;
      case DictTabInfo::ExtDouble:
        AttributeSize = DictTabInfo::a64Bit;
        AttributeArraySize = AttributeExtLength;
        break;
      case DictTabInfo::ExtOlddecimal:
        AttributeSize = DictTabInfo::an8Bit;
        AttributeArraySize =
          (1 + AttributeExtPrecision + (int(AttributeExtScale) > 0)) *
          AttributeExtLength;
        break;
      case DictTabInfo::ExtOlddecimalunsigned:
        AttributeSize = DictTabInfo::an8Bit;
        AttributeArraySize =
          (0 + AttributeExtPrecision + (int(AttributeExtScale) > 0)) *
          AttributeExtLength;
        break;
      case DictTabInfo::ExtDecimal:
      case DictTabInfo::ExtDecimalunsigned:
        {
          // copy from Field_new_decimal ctor
          uint precision = AttributeExtPrecision;
          uint scale = AttributeExtScale;
          if (precision > DECIMAL_MAX_LENGTH || scale >= NOT_FIXED_DEC)
            precision = DECIMAL_MAX_LENGTH;
          uint bin_size = my_decimal_get_binary_size(precision, scale);
          AttributeSize = DictTabInfo::an8Bit;
          AttributeArraySize = bin_size * AttributeExtLength;
        }
        break;
      case DictTabInfo::ExtChar:
      case DictTabInfo::ExtBinary:
        AttributeSize = DictTabInfo::an8Bit;
        AttributeArraySize = AttributeExtLength;
        break;
      case DictTabInfo::ExtVarchar:
      case DictTabInfo::ExtVarbinary:
        if (AttributeExtLength > 0xff)
          return false;
        AttributeSize = DictTabInfo::an8Bit;
        AttributeArraySize = AttributeExtLength + 1;
        break;
      case DictTabInfo::ExtDatetime:
        // to fix
        AttributeSize = DictTabInfo::an8Bit;
        AttributeArraySize = 8 * AttributeExtLength;
        break;
      case DictTabInfo::ExtDate:
        // to fix
        AttributeSize = DictTabInfo::an8Bit;
        AttributeArraySize = 3 * AttributeExtLength;
        break;
      case DictTabInfo::ExtBlob:
      case DictTabInfo::ExtText:
        AttributeSize = DictTabInfo::an8Bit;
        // head + inline part (length in precision lower half)
        AttributeArraySize = (NDB_BLOB_HEAD_SIZE << 2) + (AttributeExtPrecision & 0xFFFF);
        break;
      case DictTabInfo::ExtBit:
	AttributeSize = DictTabInfo::aBit;
	AttributeArraySize = AttributeExtLength;
	break;
      case DictTabInfo::ExtLongvarchar:
      case DictTabInfo::ExtLongvarbinary:
        if (AttributeExtLength > 0xffff)
          return false;
        AttributeSize = DictTabInfo::an8Bit;
        AttributeArraySize = AttributeExtLength + 2;
        break;
      case DictTabInfo::ExtTime:
        AttributeSize = DictTabInfo::an8Bit;
        AttributeArraySize = 3 * AttributeExtLength;
        break;
      case DictTabInfo::ExtYear:
        AttributeSize = DictTabInfo::an8Bit;
        AttributeArraySize = 1 * AttributeExtLength;
        break;
      case DictTabInfo::ExtTimestamp:
        AttributeSize = DictTabInfo::an8Bit;
        AttributeArraySize = 4 * AttributeExtLength;
        break;
      default:
        return false;
      };
      return true;
    }
    
    inline void print(FILE *out) {
      fprintf(out, "AttributeId = %d\n", AttributeId);
      fprintf(out, "AttributeType = %d\n", AttributeType);
      fprintf(out, "AttributeSize = %d\n", AttributeSize);
      fprintf(out, "AttributeArraySize = %d\n", AttributeArraySize);
      fprintf(out, "AttributeKeyFlag = %d\n", AttributeKeyFlag);
      fprintf(out, "AttributeStorage = %d\n", AttributeStorage);
      fprintf(out, "AttributeNullableFlag = %d\n", AttributeNullableFlag);
      fprintf(out, "AttributeDKey = %d\n", AttributeDKey);
      fprintf(out, "AttributeGroup = %d\n", AttributeGroup);
      fprintf(out, "AttributeAutoIncrement = %d\n", AttributeAutoIncrement);
      fprintf(out, "AttributeExtType = %d\n", AttributeExtType);
      fprintf(out, "AttributeExtPrecision = %d\n", AttributeExtPrecision);
      fprintf(out, "AttributeExtScale = %d\n", AttributeExtScale);
      fprintf(out, "AttributeExtLength = %d\n", AttributeExtLength);
      fprintf(out, "AttributeDefaultValue = \"%s\"\n",
        AttributeDefaultValue ? AttributeDefaultValue : "");
    }
  };
  
  static const
  SimpleProperties::SP2StructMapping AttributeMapping[];

  static const Uint32 AttributeMappingSize;

  // Signal constants
  STATIC_CONST( DataLength = 20 );
  STATIC_CONST( HeaderLength = 5 );

private:  
  Uint32 senderRef;
  Uint32 senderData;
  Uint32 requestType;
  Uint32 totalLen; 
  Uint32 offset; 
  
  /**
   * Length of this data = signal->length() - HeaderLength
   * Sender block ref = signal->senderBlockRef()
   */
  
  Uint32 tabInfoData[DataLength];

public:
  enum Depricated 
  {
    AttributeDGroup    = 1009, //Default NotDGroup
    AttributeStoredInd = 1011, //Default NotStored
    SecondTableId      = 17, //Mandatory between DICT's otherwise not allowed
    FragmentKeyTypeVal = 16 //Default PrimaryKey
  };
  
  enum Unimplemented 
  {
    TableStorageVal    = 14, //Default StorageType::MainMemory
    ScanOptimised      = 15, //Default updateOptimised
    AttributeGroup     = 1012 //Default 0
  };
};

#endif