CN102968485B - A kind of real-time data base menu item methods of exhibiting based on virtual Domain - Google Patents
A kind of real-time data base menu item methods of exhibiting based on virtual Domain Download PDFInfo
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- CN102968485B CN102968485B CN201210486004.6A CN201210486004A CN102968485B CN 102968485 B CN102968485 B CN 102968485B CN 201210486004 A CN201210486004 A CN 201210486004A CN 102968485 B CN102968485 B CN 102968485B
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Abstract
The invention discloses a kind of real-time data base menu item methods of exhibiting based on virtual Domain, the mapping with real-time data base menu item is realized by virtual Domain, comprise the following steps: every table definable virtual Domain in (1) real-time data base, virtual Domain is made up of some mark bit fields, each mark bit field can a corresponding menu item, and set the actual field of flag bit thresholding and correspondence；(2) provide interface to realize the transparent access to virtual Domain, for virtual Domain, can take out from corresponding actual field, do AND-operation, Returning mark bit field value according to its figure place and actual thresholding；(3) application program can obtain, according to above-mentioned interface, the menu item set in virtual Domain, it is not necessary to distinguishes virtual Domain or actual field, it is simple to user is to the maintenance of real-time data base menu item and use.
Description
Art
The present invention relates to a kind of real-time data base menu item methods of exhibiting based on virtual Domain, belong to Real-Time Databases System Technique
Application.
Background technology
At present, existing menu item can be used for parameter definition in real-time database and safeguards, can be respective for the definition of not same area
Menu item, it is achieved the dynamic configuration of parameter.The menu item being stored in actual field is an integer numerical value, readable poor, visits
Actual field can only be operated when asking and arrange, it is impossible to operate for some menu item, operation complexity, bring to operation and maintenance
Difficulty.
Summary of the invention
For solving existing methodical deficiency, it is an object of the invention to provide a kind of real time data library menu based on virtual Domain
Methods of exhibiting, is mapped in real-time data base menu item in the flag bit of virtual Domain, can by name or numbering access flag position
Territory, thus obtain the menu entry value of correspondence, extra conversion work need not be carried out again, it is achieved that the transparent access to menu item,
Simplify menu item operation and maintenance.
For solving above-mentioned technical problem, technical scheme is as follows:
A kind of real-time data base menu item methods of exhibiting based on virtual Domain, it is characterised in that real-time database menu item is reflected
Being mapped in virtual Domain, its method step is as follows:
(1) being virtual Domain by every table definition in real-time data base, described virtual Domain is made up of, often some mark bit fields
Individual mark bit field can a corresponding menu item, and set the actual field of flag bit thresholding and correspondence；
(2) interface is provided to realize the transparent access to virtual Domain, for virtual Domain, according to the reality that virtual Domain number conversion is corresponding
Territory number, border, and take out from corresponding actual field, do AND-operation according to corresponding actual field figure place and actual thresholding, return
Flag bit thresholding；
(3) application program takes virtual mark bit field value according to above-mentioned interface, finally obtains the menu item set in virtual Domain, real
The now access to single menu item, and show menu content by row.
Aforesaid real-time data base menu item methods of exhibiting based on virtual Domain, wherein, in described step (2), described
It is integer territory number that interface enters ginseng, and going out ginseng is character string type thresholding；Described interface include multiple heavy duty form:
The individual domain comprising virtual Domain takes out；
The multiple territories comprising virtual Domain are taken out；
Virtual thresholding is taken from local real-time database；
Virtual thresholding is taken from the network real-time database specified.
Aforesaid real-time data base menu item methods of exhibiting based on virtual Domain, it is characterised in that: provide one group based on void
Near-field accesses the interface of real-time data base menu item, methods of exhibiting calling interface, can realize the access to single menu item, and will
Menu content is shown by row.
What the present invention was reached has the beneficial effect that:
1, user can by name or numbering realizes transparent access to real-time data base menu item, it is simple to operation and maintenance；
2, virtual Domain does not stores, the mark bit field that only storage is corresponding, saves memory headroom；
3, the interface of multiple heavy duty type is provided, is suitable for the needs of various application；
4, portable high, it is adaptable to each operating system platform.
Accompanying drawing explanation
Fig. 1 is to change actual field flow process according to virtual Domain number；
Fig. 2 real-time database based on virtual Domain menu item shows interface handling process.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention made further details of introduction.
The present embodiment provides a kind of real-time data base menu item methods of exhibiting based on virtual Domain, by real-time data base
Menu item is mapped in the flag bit of virtual Domain, by name or numbering access flag bit field, thus can obtain the menu item of correspondence
Value, need not carry out extra conversion work, it is achieved that the transparent access to menu item again, simplifies menu item operation and maintenance.Its
Method step is as follows:
(1) every table definable virtual Domain in real-time data base, virtual Domain is made up of some mark bit fields, each mark
Bit field can a corresponding menu item, and set the actual field of flag bit thresholding and correspondence；
(2) provide interface to realize the transparent access to virtual Domain, for virtual Domain, change actual field according to virtual Domain number
Number, can take out from corresponding actual field, do AND-operation, Returning mark bit field value according to its figure place and actual thresholding.
Fig. 2 is that present invention real-time database based on virtual Domain menu item shows interface process chart.One group based on virtual Domain
Access the interface of real-time data base menu item, i.e. methods of exhibiting calling interface, the access to single menu item can be realized, and by dish
Single content is shown by row.This displaying interface handling process is: navigate to current record according to incoming territory number, and territory pointer points to first
Individual territory, then judges whether territory number is equal to all territories number, if equal, then territory pointer points to the step of the current field.Otherwise, then
Taking out actual field number, then judge whether actual field number exists, if there is actual field number, then carrying out virtual Domain number conversion actual field
Number, the step of the current field is pointed to subsequently into territory pointer；After last pointer points to the current field, take out thresholding, enter corresponding menu
?.
Fig. 1 is that the present invention changes actual field flow chart according to virtual Domain number；Its present invention provides a class interface to access base
In the real-time data base menu item of virtual Domain, it changes actual field number according to virtual Domain number so that it is can quickly, accurately obtain this dish
Whether individual event is selected, and shows to get up the most very convenient.Its operational approach is: it is first determined whether be internal actual field number；If
It is to return first menu；If it is not, take out virtual Domain number to be converted to internal virtual territory number and corresponding internal actual field number, then
The actual field number of correspondence is converted to again by internal actual field number.
(3) application program can obtain, according to above-mentioned interface, the menu item set in virtual Domain, shows by row, it is not necessary to distinguishes void
Near-field or actual field.
The above-mentioned interface provided in the present invention realizes conducting interviews real-time data base menu item based on virtual Domain, this kind of
The ginseng that enters of interface is integer territory number, and going out ginseng is character string type thresholding, has multiple heavy duty form, supports the individual domain comprising virtual Domain
Take out, also support that the multiple territories comprising virtual Domain are taken out；Support to take virtual thresholding from local real-time database, also support from the net specified
Network real-time database takes virtual thresholding.
In the present embodiment, first virtual mark bit field, this mark are created for the actual field that data type is Menu Type
Will bit field fills storage down, thus without committed memory space.The corresponding menu item of each mark bit field, deposits in actual field
The menu value set.When accessing menu item, it can be taken out from corresponding mark bit field, according to its figure place and actual thresholding
Do AND-operation, judge that menu item is the most selected or sets successfully by returning 0 or 1.
Assuming to have in real-time Kuku spark gap table, structure is as follows:
ID(major key), title, running status
Wherein " running status " comprises each sub-states, is a menu area, each the corresponding menu item of sub-state,
The corresponding virtual Domain of each menu item.
The table content not using virtual Domain is as follows:
| ID | Title | Running status | …… |
| 117093590328410113 | No. 1 spark gap | 25 |
The table content using virtual Domain is as follows:
| ID | Title | Running status | There is block (empty) | Alarm is had to be suppressed (empty) | Need to confirm (empty) | Light word is had to confirm (empty) | There is accident (empty) | There is light word (empty) | …… |
| 117093590328410113 | No. 1 spark gap | 25 | 0 | 1 | 1 | 0 | 0 | 1 |
For No. 1 spark gap, in running status menu, the 0th, 3,4 menu items are selected, and 20+23+24=25, therefore its
Running status menu thresholding is 25.When not using virtual Domain, only display running status menu area, after using virtual Domain, will run
Each sub-state in state, as menu item, is mapped by virtual Domain.
Visible when not using virtual Domain, running status menu area can only be accessed, it is impossible to accurately obtain the most each menu item
Information, need to carry out extra conversion work, add operation easier, show to get up the most directly perceived.And use virtual Domain
Time, the menu subitem that virtual Domain is corresponding can be directly accessed, this menu item can be quickly, accurately obtained according to virtual thresholding the most selected
Fixed, show to get up the most very convenient.
The present invention provides above-mentioned interface accessing real-time data base based on virtual Domain menu item, and the ginseng that enters of this interface is numerical value
Type keyword, going out ginseng is to describe character string, has multiple heavy duty form, supports that single keyword takes single description character string, also prop up
Hold multiple keyword and take multiple description character string；Support to take description character string from local real-time database, also support from the network specified
Real-time database takes description character string.Virtual Domain operationally, can be taken out and change, according to its position from corresponding actual field by interface
Number and actual thresholding do AND-operation, thus are converted into desired menu entry value and return.
Use the real-time database man machine interface of present mechanism when accessing menu item, can obtain in virtual Domain according to above-mentioned interface and set
Fixed menu item, it is not necessary to distinguish virtual Domain or actual field.
The real-time data base menu item methods of exhibiting based on virtual Domain that the present invention relates to is to combine to be operated in application layer
Realize in the real-time database of independent development, do not rely on concrete operating system, it is adaptable to various operating systems.The present invention relates to
Real-time data base menu item methods of exhibiting based on virtual Domain ensure that portability, it is possible to along with real-time database security of system, surely
Surely operate in the operating system platforms such as IBM AIX, Sun Solaris, Alpha Tru64, HPUX, Linux, Windows；
System programming language uses ANSI C/C++, and meets IEEE POSIX.2 standard.
Examples detailed above limits the present invention the most in any form, and the mode of all employing equivalents or equivalent transformation is obtained
Technical scheme, all falls within protection scope of the present invention.
Claims (2)
1. a real-time data base menu item methods of exhibiting based on virtual Domain, it is characterised in that real-time database menu item is mapped
In virtual Domain, its method step is as follows:
(1) being virtual Domain by every table definition in real-time data base, described virtual Domain is made up of some mark bit fields, Mei Gebiao
The corresponding menu item of will bit field, and set the actual field of flag bit thresholding and correspondence；
(2) interface is provided to realize the transparent access to virtual Domain, for virtual Domain, according to the actual field that virtual Domain number conversion is corresponding
Number, and take out from corresponding actual field, do AND-operation, Returning mark according to corresponding actual field figure place and actual thresholding
Bit field value；
(3) application program takes virtual mark bit field value according to above-mentioned interface, finally obtains the menu item set in virtual Domain, it is achieved right
The access of single menu item, and show menu content by row；
Described interface realizes:
Navigating to current record according to incoming territory number, territory pointer points to first territory；Then judge that whether territory number is equal to all
Territory number；If equal, then territory pointer points to the step of the current field；Otherwise, then take out actual field number, more whether judge actual field number
Exist, if there is actual field number, then carry out virtual Domain number conversion actual field step, point to the current field subsequently into territory pointer
Step；
After last pointer points to the current field, take out thresholding, enter corresponding menu item；
Described virtual Domain number conversion actual field step is: it is first determined whether be internal actual field number；If so, first dish is returned
Single；If it is not, take out virtual Domain number to be converted to internal virtual territory number and corresponding internal actual field number, the most again by internal actual
Territory number is converted to the actual field number of correspondence.
Real-time data base menu item methods of exhibiting based on virtual Domain the most according to claim 1, it is characterised in that: in institute
Stating in step (2), the ginseng that enters of described interface is integer territory number, and the ginseng that goes out of described interface is character string type thresholding, described interface bag
Including multiple heavy duty form, described multiple heavy duty form is that the individual domain comprising virtual Domain takes out, and the multiple territories comprising virtual Domain take
Go out, take virtual thresholding from local real-time database and take virtual thresholding from the network real-time database specified.
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| JP2001075840A (en) * | 1999-09-03 | 2001-03-23 | Meidensha Corp | Storage and retrieval system of monitored data |
| CN1808433A (en) * | 2006-01-26 | 2006-07-26 | 北京和利时系统工程股份有限公司 | Quick and safe real-time database access method |
| CN101901269B (en) * | 2010-08-04 | 2012-05-23 | 国电南瑞科技股份有限公司 | Real-time library foreign key reference and display method |
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Inventor after: Wang Jin Inventor after: Wang Zhiyong Inventor after: Jin Jing Inventor after: Peng Hui Inventor after: Sun Yunfeng Inventor after: Zhang Haibin Inventor after: Liu Runsheng Inventor after: Wang Peng Inventor after: Lin Tao Inventor after: Xin Feng Inventor before: Wang Jin Inventor before: Jin Jing Inventor before: Peng Hui Inventor before: Sun Yunfeng Inventor before: Zhang Haibin |
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Effective date of registration: 20180327 Address after: 211106 Jiangning City, Nanjing Province, the integrity of the road No. 19, Co-patentee after: State Grid Beijing Electric Power Company Patentee after: NARI Technology Development Co., Ltd. Address before: High road high tech Development Zone Nanjing city Jiangsu province 210061 No. 20 Patentee before: NARI Technology Development Co., Ltd. |
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