CN103092987A - Fast document retrieval method and device - Google Patents
Fast document retrieval method and device Download PDFInfo
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- CN103092987A CN103092987A CN2013100482461A CN201310048246A CN103092987A CN 103092987 A CN103092987 A CN 103092987A CN 2013100482461 A CN2013100482461 A CN 2013100482461A CN 201310048246 A CN201310048246 A CN 201310048246A CN 103092987 A CN103092987 A CN 103092987A
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Abstract
The invention discloses a fast document retrieval method and a device. The Fast document retrieval method comprises the steps of creating an indexed file, wherein the indexed file is obtained by extracting file information in update sequence number (USN) log records of all actuators; inputting a keyword of the name of the file during document retrieval each time and retrieving information in the indexed file; and displaying a retrieving result. The fast document retrieval method and the device are capable of reducing waste of system resources and improving retrieving speed.
Description
Technical field
The present invention relates to field of computer technology, refer to especially a kind of accelerated file access method and apparatus.
Background technology
At present, along with the capacity of hard disk is increasing, the quantity of disk File is also more and more, we usually forget the deposit position of file, only remember name or part name or other attributes, for example file type of file, date createds etc., at this moment we just need a kind of service of document retrieval.
Carried the function of the search of file in the windows system, its supports by date created, revise date, file type, file size retrieves, and also supports the asterisk wildcard retrieval, but powerful function also bring drawback.It is totally to retrieve, and makes retrieval rate slack-off, can not rapid feedback, and need the user to wait for.For example: based on hardware environment be CPU:Inter I3, in to save as 2GB/DDR3, hard disk be in 500G/7200 situation about turning, CPU usage 24%-27% during the data of retrieval DISK to Image, system resource expends greatly.
Summary of the invention
In view of this, the object of the invention is to propose a kind of accelerated file access method and apparatus, can reduce the waste of system resource, improve retrieval rate.
Based on above-mentioned purpose accelerated file access method provided by the invention, comprise the following steps:
Create index file, described index file is the fileinfo that extracts in each driver USN log recording;
When carrying out document retrieval, the key word of input file title is retrieved in indexed file at every turn; And
Show result for retrieval.
Alternatively, create described index file, comprise the following steps:
Obtain each Driver Information;
Judge that whether each driver file system title is the NTFS form, changes the driver of non-NTFS form;
Judge on the driver of NTFS form whether opened the USN log recording, if open, obtain each driver USN log recording; If do not open, first open the USN log recording, then obtain each driver USN log recording;
Create index file according to each driver USN log information of obtaining.
Alternatively, described index file extracts file name, file address and the Establish reason in each driver USN log recording.
Further, the record in described index file is arranged sequentially according to file name letter ascending order.
Further, described index file is the fileinfo that extracts in each driver USN log recording, simultaneously can the described index file of regular update, can synchronize with the fileinfo in each driver USN log recording.
Based on above-mentioned purpose, the present invention also provides a kind of accelerated file access device, comprising:
The index file creation module is used for creating index file, and described index file is the fileinfo that extracts in each driver USN log recording;
Retrieval module for the key word of input file title, is retrieved in indexed file; And
Display module, the result that is used for retrieving shows.
Alternatively, described index file creation module comprises:
The obtaining information module is used for obtaining each Driver Information, judges whether each driver file system title is the NTFS form, if the NTFS form, the obtaining information module is connected with detection module; If not the NTFS form, the obtaining information module is connected with modular converter, and described modular converter is connected with detection module;
Modular converter is used for the driver that the file system title is not the NTFS form is changed;
Detection module, for whether having opened driver USN log recording on the driver that judges the NTFS form, if open, described detection module is connected with creation module; If do not open, described detection module is connected with opening module, and described opening module is connected with creation module;
Opening module is used for opening driver USN log recording;
Creation module is used for obtaining each driver USN log information, and creates index file.
Alternatively, described index file extracts file name, file address and the Establish reason in each driver USN log recording.
Further, the record in described index file is arranged sequentially according to file name letter ascending order.
Further, described index file is the fileinfo that extracts in each driver USN log recording, simultaneously can the described index file of regular update, can synchronize with the fileinfo in each driver USN log recording.
As can be seen from above, a kind of accelerated file access method and apparatus provided by the invention, by direct search index file, index file is the fileinfo that extracts in each driver USN log recording, simultaneously can the described index file of regular update.Thereby can save retrieval time, improve recall precision.
Description of drawings
Fig. 1 is the schematic flow sheet of a kind of accelerated file access method of the embodiment of the present invention;
Fig. 2 is the method flow schematic diagram that the embodiment of the present invention creates index file;
Fig. 3 is the structural representation of a kind of accelerated file access device of the embodiment of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
Consult shown in Figure 1ly, the schematic flow sheet for a kind of accelerated file access method of inventive embodiments comprises:
When 1) having index file in system being detected, directly carry out step 102.
When 2) not having index file in system being detected, first create index file, then execution in step 102.Consult shown in Figure 2ly, be that the embodiment of the present invention creates the method flow schematic diagram of index file, wherein:
In one embodiment of the invention, the information by Win32API read local driver, need to utilize and obtain the driver list with the GetLogicalDriveStrings function, then obtain the file system type of specifying driver by the GetVolumelnformation function.
1) when the driver file system type being detected and be the NTFS form, directly carry out step 203.
2) when the driver file system type being detected and be not the NTFS form, can use file system converter, utilize the Convert.exe in system that the driver file system type of non-NTFS form is converted to new technology file system.And then carry out step 203.
1) if the driver USN log recording of having opened the NTFS form detected, directly carry out step 204.
2) if the driver USN log recording of not opening the NTFS form detected, first the driver USN log recording of NTFS form is opened, then carry out step 204.
In one embodiment of the invention, described index file is the fileinfo that extracts in each driver USN log recording, in order to synchronize with the fileinfo in each driver USN log recording, and can the regular update index file.When retrieving at every turn, only need the key word of input file title, then directly retrieve in indexed file.
In an embodiment of the present invention, the result of retrieval is that file name, file address and the Establish reason of this retrieving files that will record in index file shows.
Consult shown in Figure 3ly, be the structural representation of a kind of accelerated file access device of the embodiment of the present invention, wherein:
Detect index file and whether have module 301, can judge whether there is index file in system, its major function comprises:
When 1) having index file in system being detected, be connected with retrieval module 308.
When 2) not having index file in system being detected, be connected with index file creation module 302.
Index file creation module 302 is used for creating index file, comprising:
Whether obtaining information module 303 exists module 301 to be connected with described detection index file, and its major function comprises:
1) obtain each Driver Information: in one embodiment of the invention, the information by Win32API read local driver, need to utilize and obtain the driver list with the GetLogicalDriveStrings function, then obtain the file system type of specifying driver by the GetVolumelnformation function.
2) judge whether each driver file system title is the NTFS form, when the driver file system type being detected and be the NTFS form, obtaining information module 303 is connected with detection module 305.When the driver file system type being detected and be not the NTFS form, obtaining information module 303 is connected with modular converter 304, and modular converter 304 is connected with detection module 305.
1) if the driver USN log recording of having opened the NTFS form detected, detection module 305 is connected with creation module 307.
2) if the driver USN log recording of not opening the NTFS form detected, detection module 305 is connected with opening module 306, and opening module 306 and creation module 307.
This shows.A kind of rapid file searching method and device that the present invention realizes creatively can create index file based on the USN log recording, retrieve by index file; And the speed that creates index file is very fast, and 1 minute just can 1,000,000 files of index, for a plurality of files of the hundreds of thousands on the hard disk of hundreds of G, set up the time of index needs and also only have several seconds, computing machine newly can better establishment index speed faster; The index file that creates is very little also, 160,000 files, and the size of the index file of generation can be controlled in 1MB; The speed of retrieving by index file is exceedingly fast, and index file makes search speed just can complete in second at 1-4; Meanwhile, rapid file searching method of the present invention and device implement simple and easy to do.
Those of ordinary skill in the field are to be understood that: the above only is specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. an accelerated file access method, is characterized in that, comprises the following steps:
Create index file, described index file is the fileinfo that extracts in each driver USN log recording;
When carrying out document retrieval, the key word of input file title is retrieved in indexed file at every turn; And
Show result for retrieval.
2. search method according to claim 1, is characterized in that, creates described index file, comprises the following steps:
Obtain each Driver Information;
Judge that whether each driver file system title is the NTFS form, changes the driver of non-NTFS form;
Judge on the driver of NTFS form whether opened the USN log recording, if open, obtain each driver USN log recording; If do not open, first open the USN log recording, then obtain each driver USN log recording;
Create index file according to each driver USN log information of obtaining.
3. search method according to claim 1, is characterized in that, described index file extracts file name, file address and the Establish reason in each driver USN log recording.
4. search method according to claim 3, is characterized in that, the record in described index file is arranged sequentially according to file name letter ascending order.
5. the described search method of any one according to claim 1 to 4, it is characterized in that, described index file is the fileinfo that extracts in each driver USN log recording, simultaneously can the described index file of regular update, can synchronize with the fileinfo in each driver USN log recording.
6. an accelerated file access device, is characterized in that, comprising:
The index file creation module is used for creating index file, and described index file is the fileinfo that extracts in each driver USN log recording;
Retrieval module for the key word of input file title, is retrieved in indexed file; And
Display module, the result that is used for retrieving shows.
7. indexing unit according to claim 6, is characterized in that, described index file creation module comprises:
The obtaining information module is used for obtaining each Driver Information, judges whether each driver file system title is the NTFS form, if the NTFS form, the obtaining information module is connected with detection module; If not the NTFS form, the obtaining information module is connected with modular converter, and described modular converter is connected with detection module;
Modular converter is used for the driver that the file system title is not the NTFS form is changed;
Detection module, for whether having opened driver USN log recording on the driver that judges the NTFS form, if open, described detection module is connected with creation module; If do not open, described detection module is connected with opening module, and described opening module is connected with creation module;
Opening module is used for opening driver USN log recording;
Creation module is used for obtaining each driver USN log information, and creates index file.
8. indexing unit according to claim 6, is characterized in that, described index file extracts file name, file address and the Establish reason in each driver USN log recording.
9. indexing unit according to claim 8, is characterized in that, the record in described index file is arranged sequentially according to file name letter ascending order.
10. the described indexing unit of any one according to claim 6 to 9, it is characterized in that, described index file is the fileinfo that extracts in each driver USN log recording, simultaneously can the described index file of regular update, can synchronize with the fileinfo in each driver USN log recording.
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| CN2013100482461A CN103092987A (en) | 2013-02-06 | 2013-02-06 | Fast document retrieval method and device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104899337A (en) * | 2015-07-01 | 2015-09-09 | 中国农业银行股份有限公司 | File index building method and system |
| CN105574192A (en) * | 2015-12-24 | 2016-05-11 | 张梅云 | Computer document retrieval method |
| CN108874820A (en) * | 2017-05-11 | 2018-11-23 | 广东爱瓦力科技股份有限公司 | A kind of system file searching method |
| CN111274207A (en) * | 2020-01-16 | 2020-06-12 | 青岛科技大学 | Novel file retrieval method and system based on data visualization analysis |
| CN112380416A (en) * | 2020-11-25 | 2021-02-19 | 北京慕华信息科技有限公司 | Method for updating course index, course searching method and device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104899337A (en) * | 2015-07-01 | 2015-09-09 | 中国农业银行股份有限公司 | File index building method and system |
| CN104899337B (en) * | 2015-07-01 | 2018-05-29 | 中国农业银行股份有限公司 | The method for building up and system of a kind of file index |
| CN105574192A (en) * | 2015-12-24 | 2016-05-11 | 张梅云 | Computer document retrieval method |
| CN108874820A (en) * | 2017-05-11 | 2018-11-23 | 广东爱瓦力科技股份有限公司 | A kind of system file searching method |
| CN108874820B (en) * | 2017-05-11 | 2021-11-30 | 广东爱瓦力科技股份有限公司 | System file searching method |
| CN111274207A (en) * | 2020-01-16 | 2020-06-12 | 青岛科技大学 | Novel file retrieval method and system based on data visualization analysis |
| CN112380416A (en) * | 2020-11-25 | 2021-02-19 | 北京慕华信息科技有限公司 | Method for updating course index, course searching method and device |
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Application publication date: 20130508 |