CN104834663A - Full-text retrieval system facing optical disc library - Google Patents
Full-text retrieval system facing optical disc library Download PDFInfo
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Abstract
The invention relates to a full-text retrieval system facing an optical disc library, and belongs to the technical field of application of computers. The full-text retrieval system comprises a file index establishing module, a file data storage module, a keyword retrieval module and a file information reading module, wherein the text index establishing module comprises a file capacity calculating module, an optical disc distribution module, a file reading module, a file information word-segmentation module and an index table establishing module; the index table establishing module comprises a magnetic disc index file establishing module, an optical disc index file establishing module and an optical disc index file updating module; the keyword retrieval module comprises a keyword obtaining module, a keyword processing module, a magnetic disc retrieval module, an optical disc index file obtaining module, an optical disc retrieval module and a retrieved result output module. According to the full-text retrieval system, data is directly stored into the optical disc library in the form of files, and the files of the optical disc library are directly operated and are not stored and retrieved through database files, so that the complexity of data storage and operation of the optical disc library is reduced.
Description
Technical field
The present invention relates to a kind of text retrieval system towards CD server, belong to Computer Applied Technology field.
Background technology
Growing storage needs to make people to the demand of vast capacity memory device also corresponding increase.Memory device at present based on CD has CD tower, CD server and CD mirror server, and CD server seems particularly important.CD server is a kind of Compact Disk Network shared device with CD-ROM jukebox structure (mechanical arm).CD server is generally made up of the CD rack of placing compact disc, CD-ROM jukebox structure (mechanical arm) and driver three part.In recent years, because the memory capacity of single compact disc increases greatly, CD server compared to common memory device as the price performance advantages such as disk battle array example, tape library more and more reveal.At present mostly be to operate based on the database in CD server about the data management of CD server, for some data, undertaken managing by the database on CD really more convenient.But for some file data, particularly need the file data carrying out full-text search, manage with the database on CD, be just equivalent between search engine and data, add a layer data, cause the inconvenience in retrieval.So for needing the data of carrying out full-text search, being directly stored in CD server with document form is efficiently rationally, and thus the present invention realizes the data storage of CD server in this manner.
Global search technology is exactly with data such as word, sound, and image etc. are main contents, with a kind of retrieval technique of the content of searching document data instead of barment tag.Compared with other search engines, the distinguishing feature of full-text search engine is that it can so that in literary composition, any one has the word of retrieval meaning as access entry, and the result for retrieval obtained is original, instead of document clue.Have many efficient full-text search engines at present, but these engines based on storage medium be all disk mostly, and in today that large data store, need a kind of text retrieval system be made up of based on the search engine of CD server storage medium badly.Present invention achieves the text retrieval system towards CD server.
In sum, the present invention not only innovates in CD server data management and full-text search data storage medium, and both is combined, and achieves the text retrieval system based on CD server.
Summary of the invention
The object of the invention is the problem that cannot realize CD server full-text search in order to solve existing CD server management system, proposing a kind of text retrieval system towards CD server.
The object of the invention is to be achieved through the following technical solutions.
Towards a text retrieval system for CD server, comprise file index and set up module, file data memory module, keyword retrieval module, file information read module; Wherein,
File index sets up module include file calculation of capacity module, module set up by CD distribution module, file read module, fileinfo word-dividing mode, concordance list.
Concordance list is set up module and is comprised that disk index file sets up module, CD index file sets up module, CD index file update module;
Keyword retrieval module comprises keyword acquisition module, keyword processing module, search disk module, CD index file acquisition module, light disk retrieval module, result for retrieval output module.
File index set up module by file size computing module statistics institute will stored in total file size, determine distribution cd number.By CD distribution module, storage positions of files is distributed again, determine each file will stored in CD numbering.Then by the content of file read module file reading, by fileinfo word-dividing mode, word segmentation processing is carried out to file content, set up module finally by concordance list and set up the index file on disk and the index file on CD respectively.
File data memory module sets up each CD index file of module foundation stored in the CD of correspondence by file data with by file index.
Keyword retrieval module obtains the keyword of user's input by keyword acquisition module, utilizes keyword processing modules implement to the identification of keyword and deconsolidation process.By search disk module, each keyword is retrieved again, obtain the CD numbering of each keyword place file, then obtain the index file on corresponding CD by index file acquisition module.The retrieving information of each keyword is obtained finally by light disk retrieval module, and by Sequential output file path that result for retrieval output module successively decreases according to the frequency that keyword occurs hereof.
File information read module, according to the file path that keyword retrieval module obtains, reads corresponding document content.
Towards a text searching method for CD server, be first stored in the file allocation CD of CD server, then the index file of optical file will be set up on disk and CD, then file data, file index information be together stored into CD server; When carrying out the full-text search of file, first by disk and CD two-stage index document retrieval keyword place fileinfo, then read CD server message file according to result for retrieval.Concrete steps comprise:
1. utilize the text retrieval system based on CD server to be will stored in the method for the file allocation CD of CD server, process be as follows:
Step 1.1, for given file data, first by file size computing module u1, obtains the amount of capacity information that file is total;
The result of calculation of file size computing module u1 as parameter, by CD distribution module u2, is obtained the CD numbering for this file data distributes by step 1.2.
2, utilize the text retrieval system based on CD server on disk and CD, set up the method for the index file of optical file, process is as follows:
Step 2.1 text retrieval system reads to judge whether the index file on CD exists to the index file on corresponding CD by the relations of distribution of file and CD numbering.If index file exists, perform step 2.2; If index file does not exist, perform step 2.3;
Step 2.2 text retrieval system by CD index file update module u8, reads the index file of corresponding CD according to the distribution corresponding relation of file and CD numbering;
Step 2.3 text retrieval system is set up module u5 by concordance list on disk, is set up the initial Hash table of disk index file and the initial Hash table of CD index file;
Step 2.4 text retrieval system is read stored in the file in CD, will be obtained the relevant information of file, comprise file place CD numbering, reference number of a document, file content by file read module u3;
Step 2.5 text retrieval system carries out word segmentation processing by fileinfo word-dividing mode u4 to the file content read, and obtains the set of word and the relevant information of word, i.e. the word frequency of occurrences, position;
Step 2.6 text retrieval system is set up module u6 by disk index file and is linked on the Hash table of disk index file by file index information (comprising relevant information and the file place CD numbering of word);
Step 2.7 text retrieval system is set up module u7 by CD index file and is linked on the Hash table of CD index file by file index information (comprising the relevant information of word);
3. utilize the text retrieval system based on CD server file data, file index information to be together stored into the method for CD server, process is as follows:
Step 3.1 uses mechanical disc changer 310 by CD server management system X, finds the CD 330 of specifying;
Step 3.2 uses CD drive 320 by CD server management system X, drives CD;
File content and CD index file write in corresponding CD by step 3.3.If originally there is index file in CD, also need the CD index file deposit position mark revised on disk, the position that the CD index file after indicia point being upgraded is deposited.
4, utilize text retrieval system based on CD server by the method for disk and CD two-stage index document retrieval keyword place fileinfo, process is as follows:
Step 4.1 text retrieval system obtains the information of user's input for retrieving by keyword acquisition module u9;
Step 4.2 text retrieval system analyzes the information of user's input for retrieving by keyword processing module u10, comprises the quantity of keyword, length, determines that user wants the information of inquiring about;
Step 4.3 text retrieval system obtains the CD number (may comprise multiple CD) at the keyword place of user's inquiry according to key word information by search disk module u11;
Step 4.4 text retrieval system obtains CD index file by CD index file acquisition module u12 according to the CD at keyword place number;
Step 4.5 text retrieval system obtains the file index information of user's searching keyword according to CD index file by light disk retrieval module u13;
Step 4.6 text retrieval system will inquire about the file index information that obtains according to keyword occurrence frequency Sequential output by result for retrieval output module u14.
5. utilize the text retrieval system based on CD server to read the method for CD server message file, process is as follows:
Step 5.1, according to the index information drawn in keyword retrieval module and file path, uses mechanical disc changer 310 by CD server management system X, finds the CD of specifying;
Step 5.2 uses CD drive 320 by CD server management system X, drives CD, reads data.
Beneficial effect
The present invention realizes the system of carrying out full-text search towards CD server, it is calculated as according to set up index stored in front with relevant at file data, meet the requirement of Write once optical disc, and on disk and CD, all establish the index of file, the information that disk stores is reduced, reduces the complicacy of disk operating and the power consumption of retrieval.The present invention directly in the form of a file by data stored in CD server, directly the file of CD server is operated and is not stored by database file and retrieve, reduce the complicacy that data store and CD server operates.
Accompanying drawing explanation
Fig. 1 is the structural representation of the text retrieval system based on CD server that the present invention utilizes disk index file and CD index file to realize;
Fig. 2 is that the present invention utilizes the text retrieval system based on CD server on disk and CD, set up the method flow diagram of file index;
Fig. 3 is that the present invention utilizes text retrieval system based on CD server by the method flow diagram of index file search key place fileinfo on disk and on CD.
Number in the figure, 100-text retrieval system, 110-file index sets up module, 120-file data memory module, 130-keyword retrieval module, 140-file information read module, u1-file size computing module, u2-CD distribution module, u3-file read module, u4-fileinfo word-dividing mode, module set up by u5-concordance list, u6-disk index file sets up module, u7-CD index file sets up module, u8-CD index file update module, u9-keyword acquisition module, u10-keyword processing module, u11-search disk module, u12-CD index file acquisition module, u13-light disk retrieval module, u14-result for retrieval output module, 200-magnetic disk memory, index file on 210-disk, 300-CD server, 310-machinery disc changer, 320-CD drive, 330-CD, index file on 340-CD, X-CD server management system.
Embodiment
Below in conjunction with drawings and Examples, the present invention is elaborated.
Embodiment
Towards a text retrieval system for CD server, comprise file index and set up module, file data memory module, keyword retrieval module, file information read module; Wherein,
File index sets up module include file calculation of capacity module, module set up by CD distribution module, file read module, fileinfo word-dividing mode, concordance list.
Concordance list is set up module and is comprised that disk index file sets up module, CD index file sets up module, CD index file update module;
Keyword retrieval module comprises keyword acquisition module, keyword processing module, search disk module, CD index file acquisition module, light disk retrieval module, result for retrieval output module.
File index set up module 110 by file size computing module u1 add up institute will stored in total file size, determine distribution cd number.By CD distribution module u2, storage positions of files is distributed again, determine each file will stored in CD numbering.Then by the content of file read module u3 file reading, by fileinfo word-dividing mode u4, word segmentation processing is carried out to file content, set up module u5 finally by concordance list and set up the index file on disk and the index file on CD respectively.
File data memory module 120 sets up each CD index file of module foundation stored in the CD of correspondence by file data with by file index.
Keyword retrieval module 130 obtains the keyword of user's input by keyword acquisition module u9, utilizes keyword processing module u10 realization to the identification of keyword and deconsolidation process.By search disk module u11, each keyword is retrieved again, obtain the CD numbering of each keyword place file, then obtained the index file on corresponding CD by index file acquisition module u12.The retrieving information of each keyword is obtained finally by light disk retrieval module u13, and by Sequential output file path that result for retrieval output module u14 successively decreases according to the frequency that keyword occurs hereof.
File information read module 140, according to the file path that keyword retrieval module 130 obtains, reads corresponding document content.
Towards a text searching method for CD server, comprising:
1. utilize the text retrieval system based on CD server to be will stored in the method for the file allocation CD of CD server, process be as follows:
Step 1.1, for given file data, first by file size computing module u1, obtains the amount of capacity information that file is total;
The result of calculation of file size computing module u1 as parameter, by CD distribution module u2, is obtained the CD numbering for this file data distributes by step 1.2.
2. as shown in Figure 2, utilize the text retrieval system based on CD server on disk and CD, set up the method for the index file of optical file, process is as follows:
Step 2.1 text retrieval system reads to judge whether the index file on CD exists to the index file on corresponding CD by the relations of distribution of file and CD numbering.If index file exists, perform step 2.2; If index file does not exist, perform step 2.3;
Step 2.2 text retrieval system by CD index file update module u8, reads the index file of corresponding CD according to the distribution corresponding relation of file and CD numbering;
Step 2.3 text retrieval system sets up by concordance list the initial Hash table that module u5 sets up CD index file on disk;
Step 2.4 text retrieval system is read stored in the file in CD, will be obtained the relevant information of file, comprise file place CD numbering, reference number of a document, file content by file read module u3;
Step 2.5 text retrieval system carries out word segmentation processing by fileinfo word-dividing mode u4 to the file content read, and obtains the set of word and the relevant information of word, i.e. the word frequency of occurrences, position;
Step 2.6 text retrieval system is set up module u6 by disk index file and is linked on the Hash table of disk index file by file index information (comprising relevant information and the file place CD numbering of word);
Step 2.7 text retrieval system is set up module u7 by CD index file and is linked on the Hash table of CD index file by file index information (comprising the relevant information of word);
3. utilize the text retrieval system based on CD server file data, file index information to be together stored into the method for CD server, process is as follows:
Step 3.1 uses mechanical disc changer 310 by CD server management system X, finds the CD 330 of specifying;
Step 3.2 uses CD drive 320 by CD server management system X, drives CD;
File content and CD index file write in corresponding CD by step 3.3.If originally there is index file in CD, also need the CD index file deposit position mark revised on disk, the position that the CD index file after indicia point being upgraded is deposited.
4. as shown in Figure 3, utilize text retrieval system based on CD server by the method for disk and CD two-stage index document retrieval keyword place fileinfo, process is as follows:
Step 4.1 text retrieval system obtains the information of user's input for retrieving by keyword acquisition module u9;
Step 4.2 text retrieval system analyzes the information of user's input for retrieving by keyword processing module u10, comprises the quantity of keyword, length, determines that user wants the information of inquiring about;
Step 4.3 text retrieval system obtains the CD number (may comprise multiple CD) at the keyword place of user's inquiry according to key word information by search disk module u11;
Step 4.4 text retrieval system obtains CD index file by CD index file acquisition module u12 according to the CD at keyword place number;
Step 4.5 text retrieval system obtains the file index information of user's searching keyword according to CD index file by light disk retrieval module u13;
Step 4.6 text retrieval system will inquire about the file index information that obtains according to keyword occurrence frequency Sequential output by result for retrieval output module u14.
5. utilize the text retrieval system based on CD server to read the method for CD server message file, process is as follows:
Step 5.1, according to the index information drawn in keyword retrieval module and file path, uses mechanical disc changer 310 by CD server management system X, finds the CD of specifying;
Step 5.2 uses CD drive 320 by CD server management system X, drives CD, reads data.
In sum, these are only embodiments of the invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. the text retrieval system towards CD server, it is characterized in that: comprise, file index sets up module (110), file data memory module (120), keyword retrieval module (130), file information read module (140); Wherein,
File index sets up module (110) include file calculation of capacity module (u1), module (u5) set up by CD distribution module (u2), file read module (u3), fileinfo word-dividing mode (u4), concordance list;
Concordance list is set up module (u5) and is comprised that disk index file sets up module (u6), CD index file sets up module (u7), CD index file update module (u8);
Keyword retrieval module (130) comprises keyword acquisition module (u9), keyword processing module (u10), search disk module (u11), CD index file acquisition module (u12), light disk retrieval module (u13), result for retrieval output module (u14);
File index set up module (110) by file size computing module (u1) statistics institute will stored in total file size, determine distribution cd number.By CD distribution module (u2), storage positions of files is distributed again, determine each file will stored in CD numbering; Then by the content of file read module (u3) file reading, by fileinfo word-dividing mode (u4), word segmentation processing is carried out to file content, set up module (u5) finally by concordance list and set up the index file on disk and the index file on CD respectively;
File data memory module (120) sets up each CD index file of module foundation stored in the CD of correspondence by file data with by file index;
Keyword retrieval module (130) obtains the keyword of user's input by keyword acquisition module (u9), utilizes keyword processing module (u10) realization to the identification of keyword and deconsolidation process.By search disk module (u11), each keyword is retrieved again, obtain the CD numbering of each keyword place file, then obtained the index file on corresponding CD by index file acquisition module (u12).The retrieving information of each keyword is obtained finally by light disk retrieval module (u13), and the Sequential output file path successively decreased according to the frequency that keyword occurs hereof by result for retrieval output module (u14);
File information read module (140), according to the file path that keyword retrieval module (130) obtains, reads corresponding document content.
2. the text searching method towards CD server, it is characterized in that: a kind of text searching method towards CD server, first be will stored in the file allocation CD of CD server, on disk and CD, set up the index file of optical file again, then file data, file index information are together stored into CD server; When carrying out the full-text search of file, first by disk and CD two-stage index document retrieval keyword place fileinfo, then read CD server message file according to result for retrieval.
3. a kind of text searching method towards CD server according to claim 2, is characterized in that: utilize the text retrieval system based on CD server to be will stored in the method for the file allocation CD of CD server, step be as follows:
Step 1.1, for given file data, first by file size computing module u1, obtains the amount of capacity information that file is total;
The result of calculation of file size computing module u1 as parameter, by CD distribution module u2, is obtained the CD numbering for this file data distributes by step 1.2;
4. a kind of text searching method towards CD server according to claim 2, is characterized in that: utilize the text retrieval system based on CD server on disk and CD, set up the method for the index file of optical file, step is as follows:
Step 2.1 text retrieval system reads to judge whether the index file on CD exists to the index file on corresponding CD by the relations of distribution of file and CD numbering; If index file exists, perform step 2.2; If index file does not exist, perform step 2.3;
Step 2.2 text retrieval system by CD index file update module u8, reads the index file of corresponding CD according to the distribution corresponding relation of file and CD numbering;
Step 2.3 text retrieval system sets up by concordance list the initial Hash table that module u5 sets up CD index file on disk;
Step 2.4 text retrieval system is read stored in the file in CD, will be obtained the relevant information of file, comprise file place CD numbering, reference number of a document, file content by file read module u3;
Step 2.5 text retrieval system carries out word segmentation processing by fileinfo word-dividing mode (u4) to the file content read, and obtains the set of word and the relevant information of word, i.e. the word frequency of occurrences, position;
Step 2.6 text retrieval system sets up module (u6) by file index information by disk index file, comprises relevant information and the file place CD numbering of word, is linked on the Hash table of disk index file;
Step 2.7 text retrieval system sets up module (u7) by file index information by CD index file, comprises the relevant information of word, is linked on the Hash table of CD index file;
5. a kind of text searching method towards CD server according to claim 2, is characterized in that: utilize the text retrieval system based on CD server file data, file index information to be together stored into the method for CD server, step is as follows:
Step 3.1 uses mechanical disc changer (310) by CD server management system X, finds the CD (330) of specifying;
Step 3.2 uses CD drive (320) by CD server management system X, drives CD;
File content and CD index file write in corresponding CD by step 3.3; If originally there is index file in CD, also need the CD index file deposit position mark revised on disk, the position that the CD index file after indicia point being upgraded is deposited.
6. a kind of text searching method towards CD server according to claim 2, is characterized in that: utilize text retrieval system based on CD server by the method for disk and CD two-stage index document retrieval keyword place fileinfo;
Step 4.1 text retrieval system obtains the information of user's input for retrieving by keyword acquisition module (u9)
Step 4.2 text retrieval system analyzes the information of user's input for retrieving by keyword processing module (u10), comprises the quantity of keyword, length, determines that user wants the information of inquiring about;
Step 4.3 text retrieval system obtains the CD number at the keyword place of user's inquiry according to key word information by search disk module (u11);
Step 4.4 text retrieval system obtains CD index file by CD index file acquisition module (u12) according to the CD at keyword place number;
Step 4.5 text retrieval system obtains the file index information of user's searching keyword according to CD index file by light disk retrieval module (u13);
Step 4.6 text retrieval system will inquire about the file index information that obtains according to keyword occurrence frequency Sequential output by result for retrieval output module (u14).
7. a kind of text searching method towards CD server according to claim 2, is characterized in that: utilize the text retrieval system (100) based on CD server to read the method for CD server message file, step is as follows:
Step 5.1, according to the index information drawn in keyword retrieval module (130) and file path, uses mechanical disc changer (310) by CD server (300) management system X, finds the CD of specifying;
Step 5.2 uses CD drive (320) to drive CD by CD server management system X, reads data.
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Application publication date: 20150812 |