Class ODBPP::Field

Used to represent a field within the table schema.

class Field{
public:
   enum DataType type;
   unsigned int offset;
   unsigned int length;
   unsigned short subFieldCount;
   unsigned short subFieldTotal;
   char16_t *name;
   Field *subFields;
};

Members

type	value for the field's data type.
offset	offset from the begining of the object buffer, or the offset of the variable length fields.
length	the length of the field or the expected length for variable fields - in bytes.
subFieldCount	for CODBPP::SUB_TABLE, counts all the fields in this sub-table, ie the length of subFields.
subFieldTotal	for CODBPP::SUB_TABLE, counts the total fields in just this sub-table object, including any other nested subfields, added v4.6, enable in v4.7.
name	'\0' terminating string for the field name.
subFields	For type CODBPP::SUB_TABLE, an array fields that make the sub-table

Remarks

Example Use

#include "ODBPP.h"

CODBPP::Segment index1Segments[] = {{0,(CODBPP::Mode)0}};
CODBPP::Index indexes[] = {{0,CODBPP::B_TREE,1,0,index1Segments}
CODBPP::Field fields[] = {
   {CODBPP::UINT32, 0, 4, 0,0,u"First"},
   {CODBPP::FLOAT64,8, 8, 0,0,u"Second"},
   {CODBPP::ASTR,   16,32,0,0,u"Third"}
};
CODBPP::Schema schema = {0,1,0,0,3,0,0,u"Table Name",NULL,fields, indexes};

int wmain(int argc, wchar_t* argv[])
{
   unsigned __int64 error;
   const char16_t *message;
   CODBPP database;
   if(database.OpenDatabase(u"YourDatabase") == NO_ERROR){
      if((error = database.BeginTransaction(CODBPP::EXCLUSIVE)) == NO_ERROR){
         if((error = database.CreateTable(&schema)) == NO_ERROR){
            ...
         }
      }
      if(error && database.GetErrorMessage(&message) == NO_ERROR)
         MessageBox(message);
      database.EndTransaction();
   }
   return NO_ERROR;
}

Also See

CreateTable, GetTableSchema, SetTableSchema

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