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d5000.mm
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<map version="0.9.0">
<!-- To view this file, download free mind mapping software FreeMind from http://freemind.sourceforge.net -->
<node CREATED="1338432461736" ID="ID_546224636" MODIFIED="1339661296870" TEXT="d5000">
<node CREATED="1338432501655" FOLDED="true" ID="ID_1948542502" MODIFIED="1339661290497" POSITION="right" TEXT="service">
<font BOLD="true" NAME="微软雅黑" SIZE="16"/>
<node CREATED="1338458890996" ID="ID_870777124" MODIFIED="1338458982049" TEXT="description">
<node CREATED="1338458687003" ID="ID_1361974816" MODIFIED="1338458714476" TEXT="run System V script"/>
</node>
<node CREATED="1338458983677" ID="ID_1932944006" MODIFIED="1338458989123" TEXT="paradigm">
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<node CREATED="1338458824914" ID="ID_1678793464" MODIFIED="1338458827880" TEXT="service --help | -h | --version">
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<icon BUILTIN="folder"/>
<node CREATED="1338459105958" ID="ID_85964691" MODIFIED="1338459113744" TEXT="script dir"/>
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<node CREATED="1340159078591" ID="ID_127350628" MODIFIED="1340183290838" TEXT="m_OdbSystemPtr">
<node CREATED="1340159190130" ID="ID_1070224244" MODIFIED="1340159197510" TEXT="COdbSystem">
<node CREATED="1340184772260" ID="ID_1077624747" MODIFIED="1340184791120" TEXT="struct DB_CONTEXT_TAB* m_OdbContxtTabPtr; "/>
<node CREATED="1340184772260" ID="ID_438064542" MODIFIED="1340184772260" TEXT="struct DB_CONTEXT_TAB* m_CurContxtTabPtr;"/>
<node CREATED="1340184821110" ID="ID_903308592" MODIFIED="1340184830270" TEXT="struct DB_APP_TAB* m_CurAppTabPtr; "/>
<node CREATED="1340184821110" ID="ID_365427312" MODIFIED="1340184821110" TEXT="struct DB_SYSTEM_TAB* odbsys_tabptr;"/>
<node CREATED="1340184821110" ID="ID_972648595" MODIFIED="1340184842060" TEXT="struct DB_STATICS_TAB* odbstatics_tabptr;"/>
<node CREATED="1340184821110" ID="ID_358511402" MODIFIED="1340184847158" TEXT="struct DB_CTRL_TAB* odbctrl_tabptr;"/>
</node>
</node>
<node CREATED="1340159089831" ID="ID_815304788" MODIFIED="1340159097475" TEXT="m_OdbTablePtr">
<node CREATED="1340159151793" ID="ID_281429742" MODIFIED="1340159158019" TEXT="COdbTable">
<node CREATED="1340159373401" ID="ID_152104102" MODIFIED="1340159373401" TEXT="struct DB_APP_TAB* m_AppTabPtr;"/>
</node>
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<node CREATED="1340159099275" ID="ID_1542630661" MODIFIED="1340159103161" TEXT="m_OdbFieldPtr">
<node CREATED="1340159211728" ID="ID_1427646578" MODIFIED="1340159217533" TEXT="COdbField"/>
</node>
</node>
<node CREATED="1340176435523" ID="ID_119368221" MODIFIED="1340176454448" TEXT="COdbField">
<node CREATED="1340176498386" FOLDED="true" ID="ID_504746042" MODIFIED="1340179682051" TEXT="struct STDB_TAB* m_StdbTabPtr;">
<node CREATED="1340176563966" ID="ID_1921309850" MODIFIED="1340176563966" TEXT="//表首指针"/>
<node CREATED="1340177160925" ID="ID_58104608" MODIFIED="1340177320874">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<p>
//file: ~/src/platform/rtdbms/odb_lib_5000_new/inc/odb_prv_struct.h
</p>
<p>
</p>
<p>
struct STDB_TAB
</p>
<p>
{
</p>
<p>
    char            byte_tag;          //must use type cast from  DB_BYTE_T // 2004-07-07
</p>
<p>
    int                 record_size;                 //record size
</p>
<p>
    int                 phy_record_size;             //physical record size with head
</p>
<p>
    int                 record_number;          //record number in table if the table is compact or the record number in main table if the table is imcompatible .
</p>
<p>
    int                 record_sum;                  //record allow to created all
</p>
<p>
    short               field_sum;                   //field sum
</p>
<p>
    short               field_no[MAX_TABLE_FIELD];   //field relation between rtdbms & [rdbms]
</p>
<p>
</p>
<p>
    struct KEYWORD_STRU key;
</p>
<p>
    struct LOCK_STRU    lock;
</p>
<p>
</p>
<p>
    int                 index_count;
</p>
<p>
    int                 data_area_offset;
</p>
<p>
    int                 data_area_size;
</p>
<p>
</p>
<p>
    //
</p>
<p>
    //  int                 table_type;                  //for graph, etc
</p>
<p>
    unsigned char       is_auto_generated;
</p>
<p>
/******Added named fields begin *********/
</p>
<p>
    int named_fields_num;
</p>
<p>
    short named_field_no[20];//It stores STDB_FIELD_TAB::field_no , not STDB_FIELD_TAB::r_field_no, and it is ordered by STDB_FIELD_TAB::
</p>
<p>
/******Added named fields end***********/
</p>
<p>
</p>
<p>
/******Added for index begin ************/
</p>
<p>
    short index_num; //索引的数量
</p>
<p>
    char index_storage_type; //索引的存储类型，文件映射内存方式或者共享内存方式。
</p>
<p>
    int fields_used_in_index_num; //参加建立索引的域的数量，一个域被多个索引使用的话，field_used_in_index_num就要被加上几次。它要被用来描述FIELD_INDEX_DEFINE_TAB的大小和后面要提到的FIELDS_IN_INDEXS_DESC_TAB数组的大小
</p>
<p>
    int indexed_fields_num; //有多少个域被索引，一个域被多个索引使用，只是计算一次。
</p>
<p>
    int pk_storage_type; //主键索引存储方法，譬如共享内存或者文件映射内存
</p>
<p>
    int pk_mem_alloc_type;//主键内存分配方法，譬如带溢出HASH的分配方法；无溢出的HASH分配方法。
</p>
<p>
    char primary_key_name[ENG_NAME_LEN]; //主键索引文件名，给文件映射内存用。
</p>
<p>
    int primary_key_id; //主键索引共享内存ID，给共享内存使用。
</p>
<p>
    int pk_index_method; //主键索引方法，做成菜单，譬如直接定位、HASH等
</p>
<p>
    int pk_shm_size;//主键索引建立的共享内存的大小。
</p>
<p>
    int pk_index_length;//主键索引的长度，由于主键索引是紧凑排列的，所以它可能会比key.key_length短。
</p>
<p>
    int pk_index_status;//主键索引的状态
</p>
<p>
    time_t download_time; //从商用库下装的时间。这部分内容还不能仅仅放到COdbTable里面去.因为确定表文件>
</p>
<p>
是否是机器reboot后产生的，必须要有这个时间作为比较。
</p>
<p>
    char version[10];//预留，如果将来实时库升级导致表头发生变化，需要往version里面填信息。
</p>
<p>
    char reserved[20]; //预留
</p>
<p>
/******Added for index end**************/
</p>
<p>
</p>
<p>
/******Added for overflow table bein ***/
</p>
<p>
    int ext_record_number;//对于带空洞的表，这个成员变量表示溢出表体的记录个数 
</p>
<p>
/******Added for overflow table end ***/
</p>
<p>
    //  unsigned char       is_system_table;             //Added 2003-09-01
</p>
<p>
    //  unsigned char       is_record_app;
</p>
<p>
    //  unsigned char       is_record_lock;
</p>
<p>
    //  unsigned char       is_record_resp;
</p>
<p>
</p>
<p>
    //  int                 reserved_1;
</p>
<p>
    //  int                 reserved_2;
</p>
<p>
    //  int                 reserved_3;
</p>
<p>
    //  int                 reserved_4;
</p>
<p>
    //  int                 reserved_5;
</p>
<p>
}
</p>
</body>
</html>
</richcontent>
</node>
</node>
<node CREATED="1340176498386" ID="ID_5315241" MODIFIED="1340179690616" TEXT="struct STDB_FIELD_TAB* m_StdbFieldTabPtr; ">
<node CREATED="1340176551712" ID="ID_314111395" MODIFIED="1340176551712" TEXT="//字段首控制区信息,从OdbTable得到"/>
<node CREATED="1340177489984" ID="ID_271011020" MODIFIED="1340177553306">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<p>
//file: ~/src/platform/rtdbms/odb_lib_5000_new/inc/odb_prv_struct.h
</p>
<p>
</p>
<p>
struct STDB_FIELD_TAB
</p>
<p>
{
</p>
<p>
    short               field_no;  //rtdbms
</p>
<p>
    short               r_field_no;
</p>
<p>
    short               field_id;
</p>
<p>
    short               column_id;
</p>
<p>
    short               field_length;
</p>
<p>
    short               check_tag;  //
</p>
<p>
    int                 offset;     //data offset from data pointer, after RECORD_HEAD_STRU of this record
</p>
<p>
</p>
<p>
    int                 column_special;
</p>
<p>
    int                 ref_tableno;
</p>
<p>
    short               ref_fieldno;
</p>
<p>
</p>
<p>
    unsigned char       data_type;
</p>
<p>
    unsigned char       is_keyword;
</p>
<p>
    unsigned char       is_index;
</p>
<p>
    unsigned char       allow_null;
</p>
<p>
    unsigned char       sort_order_no;
</p>
<p>
</p>
<p>
    unsigned char       display_type;
</p>
<p>
    unsigned char       reference_flag;
</p>
<p>
    unsigned char       reference_mode;
</p>
<p>
    unsigned char       reference_display;
</p>
<p>
</p>
<p>
    unsigned char       is_app_syn;
</p>
<p>
    unsigned char       auto_meas_type;
</p>
<p>
</p>
<p>
    char                field_name_eng[ENG_NAME_LEN]
</p>
<p>
    ;
</p>
<p>
    char                field_name_chn[CHN_NAME_LEN];
</p>
<p>
    unsigned char       is_index;
</p>
<p>
    unsigned char       allow_null;
</p>
<p>
    unsigned char       sort_order_no;
</p>
<p>
</p>
<p>
    unsigned char       display_type;
</p>
<p>
    unsigned char       reference_flag;
</p>
<p>
    unsigned char       reference_mode;
</p>
<p>
    unsigned char       reference_display;
</p>
<p>
</p>
<p>
    unsigned char       is_app_syn;
</p>
<p>
    unsigned char       auto_meas_type;
</p>
<p>
</p>
<p>
    char                field_name_eng[ENG_NAME_LEN]
</p>
<p>
    ;
</p>
<p>
    char                field_name_chn[CHN_NAME_LEN];
</p>
<p>
</p>
<p>
    char                menu_name[MENU_NAME_LEN];
</p>
<p>
    char                default_asciival[DEFAULT_VALUE_LEN];
</p>
<p>
    char                min_asciival[DEFAULT_VALUE_LEN];
</p>
<p>
    char                max_asciival[DEFAULT_VALUE_LEN];
</p>
<p>
/******Added for index begin ************/
</p>
<p>
    int         in_field_index_pos;     //表示在前面描述的FIELD_INDEX_DEFINE_TAB数组中，该域出现的第一>个位置。
</p>
<p>
    int         in_index_num;   // 表示几个索引使用了该域。也就是说FIELD_INDEX_DEFINE_TAB数组中，该域出
</p>
<p>
现了多少次。
</p>
<p>
/******Added for index end *************/
</p>
<p>
</p>
<p>
    int                 search_attribute;   //  检索器的域特性           //Added 2003-09-01
</p>
<p>
    int                 statics_attribute;  //  统计的域特性
</p>
<p>
    int                 reserved_1;         //  系统保留
</p>
<p>
    int                 reserved_2;         //  系统保留
</p>
<p>
    int                 reserved_3;         //  系统保留
</p>
<p>
    int                 reserved_4;         //  系统保留
</p>
<p>
    int                 reserved_5;         //  系统保留
</p>
<p>
};
</p>
</body>
</html>
</richcontent>
</node>
</node>
<node CREATED="1340176498401" ID="ID_754001191" MODIFIED="1340176573734" TEXT="struct STDB_FIELD_TAB* m_CurFieldTabPtr; ">
<node CREATED="1340176575721" ID="ID_259901186" MODIFIED="1340176575721" TEXT="//当前字段控制区信息"/>
</node>
<node CREATED="1340176498401" ID="ID_694582436" MODIFIED="1340176585036" TEXT="char* m_CurRecordPtr; ">
<node CREATED="1340176587039" ID="ID_961217739" MODIFIED="1340176587039" TEXT="//当前记录数据"/>
</node>
</node>
</node>
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