db_val_t Struct Reference

This structure represents a value in the database. More...

#include <db_val.h>

Collaboration diagram for db_val_t:

Data Fields

• int free

  Means that the value should be freed.
  

• int nul

  Means that the column in database has no value.
  

• db_type_t type

  Type of the value.
  

• union {
  •    unsigned int    bitmap_val

    Bitmap data type.
    

  •    str    blob_val

    binary object data
    

  •    double    double_val

    double value
    

  •    int    int_val

    integer value
    

  •    long long    ll_val

    long long value
    

  •    str    str_val

    str type string value
    

  •    const char *    string_val

    zero terminated string
    

  •    time_t    time_val

    unix time_t value
    

• } val

  Column value structure that holds the actual data in a union.
  

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Detailed Description

Several datatypes are recognized and converted by the database API. These datatypes are automaticaly recognized, converted from internal database representation and stored in the variable of corresponding type.

Module that want to use this values needs to copy them to another memory location, because after the call to free_result there are not more available.

If the structure holds a pointer to a string value that needs to be freed because the module allocated new memory for it then the free flag must be set to a non-zero value. A free flag of zero means that the string data must be freed internally by the database driver.

Definition at line 77 of file db_val.h.

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Field Documentation

union { ... } db_val_t::val

Referenced by db_delete_ucontact(), db_delete_urecord(), db_insert_ucontact(), db_load_urecord(), db_load_urecord_by_ruid(), db_timer_udomain(), db_update_ucontact(), db_val2pv_spec(), load_re(), and load_route_data_db().

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The documentation for this struct was generated from the following file:

• db_val.h