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MySQL 5.6.14 Source Code Document
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MySQL 5.6.14 Source Code Document
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#include <dba.h>
Public Attributes | |
| const char * | Name |
| DBA_DataTypes_t | DataType |
| Size_t | Size |
| Size_t | Offset |
| Boolean_t | Ptr |
| struct DBA_ColumnBinding * | SubBinding |
The DBA_ColumnBinding_t is used to describe a binding between one column and one field of a C struct.
typedef struct Address { char StreetName[30]; int StreetNumber; } Address_t;
typdef struct Person {
char Name[30];
Address_t * AddressPtr;
} Person_t; For example, if the field Name of a Person_t data structure is bound to the column "NAME", the corresponding binding would be defined as:
DBA_ColumnBinding_t NameBinding = DBA_BINDING( "name", DBA_CHAR, Person_t, Name );
There is also the DBA_BINDING_PTR which is used when several linked structures should be put into one table.
For example, if data in a Person_t data structure should be saved in the same table as the Address_t data structure (as the address belongs to the person), the corresponding binding would be defined as:
DBA_ColumnBinding_t AddrBinding[AddrLen]; This binding describes how the
fields in the Address_t
structure is linked to the
table PERSON_ADDRESSDBA_ColumnBinding_t AddressBinding = DBA_BINDING_PTR(Person_t, AddressPtr, AddrBinding, AddrLen);
| DBA_DataTypes_t DBA_ColumnBinding::DataType |
| Boolean_t DBA_ColumnBinding::Ptr |
| Size_t DBA_ColumnBinding::Size |
Size in bytes of member or no of DBA_ColumnBinding's when doing ptr binding
| struct DBA_ColumnBinding* DBA_ColumnBinding::SubBinding |
1.8.1.2