CN108388635A - Data search method, device, medium and computing device - Google Patents
Data search method, device, medium and computing device Download PDFInfo
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- CN108388635A CN108388635A CN201810157579.0A CN201810157579A CN108388635A CN 108388635 A CN108388635 A CN 108388635A CN 201810157579 A CN201810157579 A CN 201810157579A CN 108388635 A CN108388635 A CN 108388635A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/30—Information retrieval; Database structures therefor; File system structures therefor of unstructured textual data
- G06F16/33—Querying
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
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Abstract
Embodiments of the present invention provide a kind of data search method, device, medium and computing device.The data search method includes:Obtain the character string of pending search from the user;The character string is subjected to word segmentation processing, generates mark group data, the mark group data include at least one of the first mark group and the second mark group, and first mark group separately includes at least one key character with second mark group;And provide search result by the mark group data, wherein scan for the character in first mark group by the first matching way, scanned for the character in second mark group by the second matching way.The technical solution of the embodiment of the present invention is capable of providing simple, efficient, customizable, good compatibility the full-text search scheme based on chat record.
Description
Technical field
Embodiments of the present invention are related to communication and field of computer technology, more specifically, embodiments of the present invention relate to
And data search method, device, medium and computing device.
Background technology
Background that this section is intended to provide an explanation of the embodiments of the present invention set forth in the claims or context.Herein
Description recognizes it is the prior art not because not being included in this part.
Data search, for example, chat record are searched for, and are to carry out global search for the message in instant communication software
Function as inputs one or more keyword in dialog box, and instant communication software can return to query result immediately, such as
The keyword is included in how many a sessions, the matched chat record of how many item in each session, and it is possible to check it is specific certain
All matched chat records of a session simultaneously jump to its context.
It realizes chat record function of search, the function of search of chat record is realized especially in android system,
In the prior art, there is multiple technologies schemes.But scheme in the prior art there is search efficiencies low, customizability
It is weak;Cost of implementation is high, it is complicated to realize, maintenance cost is higher;Cannot meet equal one or more of problems of the needs of Chinese search.
Invention content
Due to solution all there is the search efficiencies low, customizability of several data search in existing technology
It is weak;Cost of implementation is high, it is complicated to realize, maintenance cost is higher;Cannot meet the problem of the needs of Chinese search.
Thus, it is also very desirable to a kind of improved data search scheme, and then be capable of providing simple, efficient, customizable, compatible
The good full-text search scheme of property
In the present context, embodiments of the present invention are intended to provide a kind of data search method, device, medium and calculating
Equipment.
In the first aspect of embodiment of the present invention, a kind of data search method is provided, including:It obtains and comes from user
Pending search character string;The character string is subjected to word segmentation processing and packet transaction, generates mark group data, the mark
Note group data include at least one of the first mark group and the second mark group, first mark group and second mark group
Separately include at least one key character;And provide search result by the mark group data, wherein pass through the first matching
Mode scans for the character in first mark group, by the second matching way to the character in second mark group
It scans for.
In certain embodiments of the present invention, aforementioned schemes are based on, the character of pending search from the user is obtained
String, including:The character string of pending search from the user is obtained by intelligent electronic device.
In certain embodiments of the present invention, aforementioned schemes are based on, the character string is subjected to word segmentation processing, generates mark
Note group data, the mark group data include at least one of the first mark group and the second mark group, including:Pass through the word
It accords with the Chinese in string and is digitally generated first mark group;And by described in the English and symbol generation in the character string
Second mark group.
In certain embodiments of the present invention, aforementioned schemes are based on, are given birth to number by the Chinese in the character string
At first mark group, including:Using each Chinese character in the character string as key character;And by institute
Each number in character string is stated respectively as key character.
In certain embodiments of the present invention, aforementioned schemes are based on, are given birth to symbol by the English in the character string
At second mark group, including:Using the continuous English character in the character string as key character;It will be in the character string
Each symbol respectively as key character;Wherein, the symbol includes:The spoken and written languages of punctuation mark, non-Chinese English
Symbol and spcial character.
In certain embodiments of the present invention, aforementioned schemes are based on, search result is provided by the mark group data,
Including:The mark group data are inputted into Lucene requestors, search result is provided by Lucene requestors.
In certain embodiments of the present invention, aforementioned schemes are based on, by mark group data input Lucene inquiries
Device provides search result by Lucene requestors, including:The mark group data are passed through into the application in android system
End input Lucene requestors, search result is provided by Lucene requestors.
In certain embodiments of the present invention, aforementioned schemes are based on, further include:Lucene source code packets are imported
In android system.
In certain embodiments of the present invention, aforementioned schemes are based on, further include:It is imported by Lucene source code packets
Source code is carried out when in android system to cut out.
In certain embodiments of the present invention, aforementioned schemes are based on, by the first matching way to first label
Character in group scans for, including:The character in first mark group is scanned for by phrase match mode.
In certain embodiments of the present invention, aforementioned schemes are based on, by the second matching way to second label
Character in group scans for, including:The character in second mark group is scanned for by prefix matching mode.
In certain embodiments of the present invention, aforementioned schemes are based on, further include:Word segmentation processing is carried out to source data, with
Generate index data;And the index data is sent to Lucene engines, so that the Lucene engines are indexed place
Reason.
In certain embodiments of the present invention, aforementioned schemes are based on, the index data is sent to Lucene engines,
Including:The index data is handled by WhitespaceAnalyzer methods, generates the first data;First data are sent out
It send to Lucene engines.
In the second aspect of embodiment of the present invention, a kind of data serching device is provided, including:Receiving module is used
In acquisition character string to be searched from the user;Word-dividing mode, for carrying out the character string at word segmentation processing and grouping
Reason, generates mark group data, and the mark group data include at least one of the first mark group and the second mark group, and described the
One mark group separately includes at least one key character with the second mark group;Enquiry module, for passing through the mark group data
Search result is provided, wherein the first inquiry submodule, for passing through the first matching way to the character in first mark group
It scans for, the second inquiry submodule, for being scanned for the character in second mark group by the second matching way.
In certain embodiments of the present invention, aforementioned schemes are based on, receiving module is additionally operable to pass through intelligent electronic device
Obtain character string to be searched from the user.
In certain embodiments of the present invention, be based on aforementioned schemes, word-dividing mode, including:First participle submodule is used
In by the character string Chinese and be digitally generated first mark group;And second participle submodule, for passing through
English and symbol in the character string generate second mark group.
In certain embodiments of the present invention, aforementioned schemes are based on, first participle submodule is arranged to:By the word
Each Chinese character in symbol string is respectively as key character;And using in the character string each number as
Key character.
In certain embodiments of the present invention, aforementioned schemes are based on, the second participle submodule is arranged to:By the word
Continuous English character in symbol string is as key character;Using each symbol in the character string as key character;
Wherein, the symbol includes:The spoken and written languages symbol and spcial character of punctuation mark, non-Chinese English.
In certain embodiments of the present invention, aforementioned schemes are based on, enquiry module is arranged to:By the mark group number
According to input Lucene requestors, search result is provided by Lucene requestors.
In certain embodiments of the present invention, aforementioned schemes are based on, enquiry module is also configured to:By the mark group
Data provide search result by the application end input inquiry device in android system, by Lucene requestors.
In certain embodiments of the present invention, aforementioned schemes are based on, further include:Import modul is used for the sources Lucene
Code packet imports in android system.
In certain embodiments of the present invention, aforementioned schemes are based on, import modul further includes:Submodule is cut, is used for
Source code is carried out when importing Lucene source code packets in android system to cut out.
In certain embodiments of the present invention, aforementioned schemes are based on, first inquires submodule, including:Phrase match list
Member, for being scanned for the character in first mark group by phrase match mode.
In certain embodiments of the present invention, aforementioned schemes are based on, second inquires submodule, including:Prefix matching list
Member, for being scanned for the character in second mark group by prefix matching mode.
In certain embodiments of the present invention, aforementioned schemes are based on, further include:Data module, for source data into
Row word segmentation processing, to generate index data;And index module, for the index data to be sent to Lucene engines, with
Toilet states Lucene engines and is indexed processing.
In certain embodiments of the present invention, be based on aforementioned schemes, index module, including:Data submodule, for leading to
It crosses WhitespaceAnalyzer methods and handles the index data, generate the first data;Sending submodule, for by described the
One data are sent to Lucene engines.
In the third aspect of embodiment of the present invention, a kind of medium is provided, program is stored thereon with, which is located
Manage the method realized when device executes as described in first aspect in the above embodiment.
In the fourth aspect of embodiment of the present invention, a kind of computing device is provided, including:Processor and memory,
The memory is stored with executable instruction, and the processor is used to call the executable instruction of the memory storage to execute such as
Method in the above embodiment described in first aspect.
According to the data search method of embodiment of the present invention, device, medium and computing device, by will be from the user
The character string of pending search carries out word segmentation processing according to preset rule and generates mark group data, and then by described
Mark group data provide search result mode, wherein by the first matching way to the character in first mark group into
Row search, scans for the character in second mark group by the second matching way.Be capable of providing it is simple, efficient, can
It customizes, the chat record full-text search scheme of good compatibility.
According to the data search method of embodiment of the present invention, device, medium and computing device, by by Android systems
The file path for the mark group data that application end in system obtains is converted into file approach, so that Lucene requestors can be embedding
Enter android system operation, greatly improves the search efficiency of chat software in android system.
Description of the drawings
Detailed description below, above-mentioned and other mesh of exemplary embodiment of the invention are read by reference to attached drawing
, feature and advantage will become prone to understand.In the accompanying drawings, if showing the present invention's by way of example rather than limitation
Dry embodiment, wherein:
Fig. 1 diagrammatically illustrates a kind of flow chart of data search method according to an embodiment of the invention;
Fig. 2 diagrammatically illustrates the flow chart of another data search method according to an embodiment of the invention;
Fig. 3 diagrammatically illustrates a kind of block diagram of data serching device according to an embodiment of the invention.
In the accompanying drawings, identical or corresponding label indicates identical or corresponding part.
Specific implementation mode
The principle and spirit of the invention are described below with reference to several illustrative embodiments.It should be appreciated that providing this
A little embodiments are used for the purpose of making those skilled in the art can better understand that realizing the present invention in turn, and be not with any
Mode limits the scope of the invention.On the contrary, these embodiments are provided so that the present invention is more thorough and complete, and energy
It enough will fully convey the scope of the invention to those skilled in the art.
One skilled in the art will appreciate that embodiments of the present invention can be implemented as a kind of system, device, equipment, method
Or computer program product.Therefore, the present invention can be with specific implementation is as follows, i.e.,:Complete hardware, complete software
The form that (including firmware, resident software, microcode etc.) or hardware and software combine.
According to the embodiment of the present invention, it is proposed that a kind of data search method, device, medium and computing device.
Herein, it is to be understood that involved term " IM " full name is Instant Messaging, is instant
The abbreviation of communication, IM are a kind of real-time communication services that user can be allowed to establish certain private chat on network.Chat note
Record search is very important function in instant message applications.
Involved term " full-text search " be index is first established to non-structured data (also referred to as full-text data), then
The process scanned for index is called full-text search (Full-text Search, FTS).
Involved term " Lucene " is an efficient full-text index library based on Java.Full-text search is divided into two
Stage creates index (Indexing) and search index (Search), and Indexing is exactly from structuring and unstructured data
Middle extraction information and organizational information forms the process of certain structure again, product is exactly structured data --- index.
Search searches for the index of establishment according to the inquiry request of user, returns to matched result set.
In addition, any number of elements in attached drawing be used to example and it is unrestricted and it is any name be only used for distinguishing,
Without any restrictions meaning.
Below with reference to several representative embodiments of the present invention, the principle and spirit of the invention are illustrated in detail.
Summary of the invention
The inventors discovered that in the prior art, there is the technical solutions of a variety of data search.But in the prior art
Scheme that there is search efficiencies is low, customizability is weak;Cost of implementation is high, it is complicated to realize, maintenance cost is higher;It cannot meet
Equal one or more of problems of the demand of Chinese search are especially the function of search that chat record is realized in android system,
In the prior art, there are following several implementations:
1, the advantages of SQL Like schemes, SQL like schemes is:Simply, additional memory space, data volume are not needed
It is efficient when less, and most of conventional schemes for needing to realize function of search.But the shortcomings that SQL like schemes, is:
Search process sequential scan table searches for input string change and is required for whole table of traversal every time, and keyword is more or data volume
Efficiency may have a greatly reduced quality in the case of big;Customizability is weak, may search out undesirable result.
2, the shortcomings that the advantages of FTS schemes, FTS schemes is that Android SQLite support FTS, SQL like schemes be:
Due to safety concerns, Android overwhelming majority version does not support the injection of self-defined segmenter, needs voluntarily to compile Android
SQLite opens FTS functions, and realizes self-defined segmenter and inject.Said program cost of implementation is high, it is complicated to realize, safeguard at
This is higher.The empty table that FTS is created, all major keys and index can be dropped.If inquiry business is not only to search for, it is also necessary to press
According to some row inquiry, needs to establish meta tables, need the company's of using table to inquire, this is affected to efficiency.
3, SQLite schemes, SQLite conceptual design targets are Embedded, its occupancy resource is very low, embedded
In equipment, only the memory of hundreds of K may be needed with regard to much of that.The shortcomings that SQLite schemes is that built-in segmenter divides Chinese
Word is supported bad, cannot meet the needs of Chinese search.
Therefore, embodiments of the present invention provide a kind of data search method, device, medium and computing device, pass through
By the character string of pending search from the user, carries out word segmentation processing according to preset rule and generates mark group data,
And then in such a way that the mark group data provide search result, wherein by the first matching way to first label
Character in group scans for, and is scanned for the character in second mark group by the second matching way.It is capable of providing
Simply, efficiently, customizable, good compatibility chat record full-text search scheme.And by by the application in android system
The file path of the mark group data obtained is held to be converted into file approach, so that Lucene requestors can be embedded in Android
System operation greatly improves the search efficiency of chat software in android system.
After the basic principle for describing the present invention, lower mask body introduces the various non-limiting embodiment party of the present invention
Formula.
Application scenarios overview
It should be noted that following application scenarios are merely for convenience of understanding spirit and principles of the present invention and showing, this
The embodiment of invention is unrestricted in this regard.On the contrary, embodiments of the present invention can be applied to it is applicable any
Scene.
Application scenarios:User is scanned in instant communication software by search box, and the content of search can be English,
Chinese or spcial character etc..The scheme that above-mentioned searching character provides through the invention scans for, and search result is efficiently fast
It is fast accurately to return to user terminal.
Illustrative methods
With reference to above-mentioned application scenarios, the letter according to exemplary embodiment of the invention is described with reference to figure 1 and Fig. 2
Cease acquisition methods.
Fig. 1 diagrammatically illustrates a kind of flow chart of data search method according to an embodiment of the invention;Institute referring to Fig.1
Show, data search method according to an embodiment of the invention, including:
Step S10 obtains the character string of pending search from the user.In this application, character string to be applied can
It is for example, English, Chinese, spoken and written languages or spcial character of other countries etc..For example, being obtained by intelligent electronic device
The character string of pending search from the user.The intelligent electronic device can for example be equipped with intelligence system, without loss of generality,
Subsequently illustrated by taking the electronic equipment for being equipped with android system as an example in this application.
The character string is carried out word segmentation processing and packet transaction, generates mark group data, the mark group by step S12
Data include at least one of the first mark group and the second mark group, and first mark group is distinguished with second mark group
Including at least one key character.
In some embodiments, for example, by the character string Chinese and be digitally generated first mark group;With
And pass through the English and symbol generation second mark group in the character string.Wherein, in the first mark group, such as:It will
Each Chinese character in the character string is respectively as key character (token);And it will be each in the character string
A number is respectively as key character.Wherein, in the second mark group, such as:By the continuous English character in the character string
As key character;Using each symbol in the character string as key character;Wherein, the symbol includes:Mark
The spoken and written languages symbol and spcial character of point symbol, non-Chinese English.Wherein, token refers to point generated by segmenter
Word.
In some embodiments, further include:Chat record is segmented using customized segmentation methods, participle is tied
Fruit is sent to Lucene and is indexed, and forms following indexed results:The content of key character in word segmentation result, appearance number,
The information such as the position of appearance are safeguarded with specific data structure, hereof by these data structure storages, for safeguarding
The content of key character, the number of appearance, appearance position data structure in the information about the same key character can
To be stored in same file or be stored in different files.For example, being segmented using customized segmentation methods
Word segmentation result is passed to WhitespaceAnalyzer processing by processing, and WhitespaceAnalyzer again ties processing
Fruit passes to Lucene engines, is indexed and stores, and is segmented, is grouped for character string to be searched again later, combination
Above-mentioned search need is completed using the requestor that Lucene is provided.
In some embodiments, self-defined segmentation methods may be, for example, in the application:Character in input string is sentenced
Disconnected, classification, some are that continuation character is merged into a token (key character), some are one token of a character, for
Chinese and other foreign language, spcial character are scanned for meet the demand with individual character.For number, it is contemplated that use
Family is experienced, and a number is as a token.It should be noted that:Space is separator/stop lexicon, ' can be for example as English
Text processing, * can be for example as Symbol processing.
Step S14 passes through the mark group data and provides search result, wherein by the first matching way to described the
Character in one mark group scans for, and is scanned for the character in second mark group by the second matching way.
, can be for example, the mark group data be inputted Lucene requestors in the application, providing search by Lucene requestors ties
Fruit.For the second mark group, inquired using prefix matching;First label is rented, is inquired using phrase match;Finally obtain two
The intersection of group polling is as query result.
In some embodiments, by phrase match mode (PhraseQuery) to the character in first mark group
It scans for.It is continuous that phrase match mode, which requires keyword positions of each token in former go here and there in query string,.
In some embodiments, by prefix matching mode (PrefeixQuery) to the character in first mark group
It scans for.
According to the data search method of embodiment of the present invention, device, medium and computing device, by will be from the user
The character string of pending search carries out word segmentation processing according to preset rule and generates mark group data, and then by described
Mark group data provide search result mode, wherein by the first matching way to the character in first mark group into
Row search, scans for the character in second mark group by the second matching way.Be capable of providing it is simple, efficient, can
It customizes, the chat record full-text search scheme of good compatibility.
Fig. 2 diagrammatically illustrates the flow chart of another data search method according to an embodiment of the invention;Fig. 2 illustrates
Property shows that Lucene engines are indexed source data the process of processing, and the application is not limited.
Step S20 carries out word segmentation processing, to generate index data by self-defined segmentation methods to source data.Such as it is logical
It crosses the word in chat record in character string and carries out word segmentation processing.Chat record can also be used for example, during index
Customized segmentation methods are segmented,
The index data is sent to Lucene engines by step S22, so that the Lucene engines are indexed place
Reason.It can be indexed for example, word segmentation result is sent to Lucene, form following indexed results:Key character in word segmentation result
Content, the number of appearance, appearance the information such as position safeguarded with specific data structure, then these data structures are deposited
Storage hereof, for safeguard the content of key character, the number of appearance, appearance position data structure in about same
The information of a key character can be stored in same file or be stored in different file.
Can for example, by change Lucene source codes, supplement Java platform exist but Android platform it is no class text
Part, so that Lucene engines can be run in Android platform.
It is described by taking Lucene 5 as an example in this application, Lucene is java frames, and Android is arrived in actual use
On can there are problems that.When Lucene 5 is transplanted on Android need by several jar packets of following Lucene also into
Row transplanting:
lucene-core.jar
lucene-analyzers-common.jar
lucene-queryparser.jar
lucene-grouping.jar
In some embodiments, if above several jar packets are placed directly under the libs catalogues of Android,
Android, which is behaved, can report ClassNotFoundException, and reason is that Lucene5 has used the NIO.2 of java
(J2SE 7) is run on java platforms, and java virtual machines can find the class of NIO.2 in jdk, but in Android
Inside SDK, there is no the classes exported below java.nio.file.Therefore, it is necessary to which the source code of above-mentioned jar packets is imported engineering, from
Row goes to realize the nio classes lacked, the thing of java nio need not be all moved into here, it is only necessary to simply realize above-mentioned
Jar packets need the class, such as Paths, Files, StandardOpenOption etc. used, need to realize open Path conversions
At FileChannel.
In some embodiments, the rope that will be obtained by the application end in android system by modified class file
The file path of argument evidence is converted into file approach.Modified class file, including:Path class file:
org.apache.lucene.store.FSDirectory:From Path (encapsulation of File) is realized, from realization Files (operations
The tool-class of Path);Document class file:Org.apache.lucene.store.SimpleFSDirectory is
Realizations of the FSDirectory on windows needs to change openInput methods, realizes according to Path and pass through construction
RandomAccessFile obtains FileChannel;Standard opens option class file:
org.apache.util.AttribuleFactory:Some reflection processing functions.
In order to carry out clearer description to the process of the index by Lucene, the substantially former of Lucene is described below
Reason.Index is the set of Document a series of, and Document is the set of Field a series of, and Filed is a series of may to go out
The set of existing Term, Term are the set of bytes a series of, and the same bytes sequences are considered in different Field
It is different Term, therefore Term is made of a pair of of value:Field name (string) and Field value (bytes).One
Index is made of multiple subindex, that is, sections (Segments), and section is a completely self-contained index, it will by roving commission.
Tissue, the storage organization of Lucene indexes are inverted index (Inverted Index).Such as have a series of
There are one Field in Document, Document, are named as content, all in Field:The word being likely to occur in content
Symbol string is called Term, such as a Term (Field Name:Content, Field value:"lucene").Each Term
The Document chained lists for including this Term are directed toward, inverted list (Posting List) is become.
There is index, the speed of search can be greatly accelerated when data volume is big, relative to sequential scan, full-text search
Advantage be that:One secondary index, is used for multiple times.In order to quickly navigate to the Term in Term dictionaries, Lucene is also introduced
TermIndex, structure are exactly word lookup tree (Trie trees), reduce query time using the common prefix of character string, most
Reduce to limits meaningless character string comparison.Trie trees will not include all Term, what it included be Term some before
Sew.Some offset of Term dictionary can be quickly located by Term Index, then from this position
Sequential search backward again.
In some embodiments, the keyword query of certain field can undergo Term Index to Term Dictionary,
Posting List are arrived again.Multiple keyword queries, need to the Posting List of multiple keywords carry out intersection, union,
The chains table handling such as difference set.
In some embodiments, Lucene, which is created, can record Frequency, i.e. word frequency rate in Index process, indicate Term
The number occurred in Document.In addition, the position (Position) that Term occurs in Document can be also recorded, position
Include two kinds again:
1) character position records which characters of the Term in article, positioning use when keyword is highlighted.
2) keyword position, it is that (some words may be by segmenter for which keyword in article to record the Term
Thing is filtered, remaining effective word, is arranged in order), phrase needs to use when inquiring (PharseQuery), Lucene
Record is keyword position.
A chained list node comprising DOC, Frequency, Position stores information such as in one Posting List
Under:
Term | Document ID | Frequency | Position |
nim | 1 | 2 | 2,6 |
2 | 1 | 3 |
Above-mentioned nodal information illustrates that Term " nim " occurs 2 times in article 1, respectively in the 2nd and the 6th key position
Upper (intermediate there are three keywords);Occur in article 21 time, on the 3rd key position.
In some embodiments, the content of the key character in the word segmentation result of the application chat record mentioned above,
The information such as the number of appearance, the position of appearance are safeguarded with specific data structure, for safeguarding the content of key character, going out
The information about the same key character in the data structure of the position of existing number, appearance can be stored in same file
In or be stored in different files, for these files, give a file path, return this file path correspondence
File approach (FileChannel), thus for Lucene engines use, scan for.
In certain embodiments of the present invention, aforementioned schemes are based on, further include:Lucene source code packets are imported
In android system.Further include:Source code is carried out when importing Lucene source code packets in android system to cut out.
The source code packet of Lucene is very big, lucene-core.jar;lucene-analyzers-common.jar;
lucene-queryparser.jar;lucene-grouping.jar;Four jar inclusion and after at least size of 6M, if
It does not do cutting to be used directly in Andoird, it is easy to the problem of side operator is more than 65K occur, utilize when being packaged
The shrinker of Proguard leaves out the class not referred to, but be directed toward in the configuration file under META-INF
Class needs to be keep.
It is as follows that proguard.cfg obscures configuration:
keepclasseswithmembernames class org.apache.lucene.**{*;}
keep class org.apache.lucene.codecs.lucene53.**{*;}
The output packet only about 1M of Lucene after being simplified by the above method.
According to the data search method of embodiment of the present invention, pass through the mark for obtaining the application end in android system
The file path of note group data is converted into file approach, so that Lucene requestors can be embedded in android system operation, pole
The big search efficiency for improving chat software in android system.
In some embodiments, according to the data search method in the application, the process of data directory and search is carried out
Schematic example can be for example as follows:
[1] stage is indexed:
Original string " the Allen Love People's Republic of China (PRC) ", using self-defined segmentation methods+WhitespaceAnalyzer
Afterwards, word segmentation result is:In allen/love//China/people/people/altogether/and/state, construct 9 Term, write-in index:
TermDictionary->DocumentList。
[2] search phase:
When searching for " all ", search string obtains token by segmentation methods:" all " starts after constructing PrefixQuery
Search:By dictionary tree, the Term of A beginnings is quickly positioned, then sequence carries out prefix matching, finds " Allen " met, from
Its docid is taken in inverted list.
When searching for " China ", search string obtains phrase " China " by segmentation methods, constructs PhraseQuery=>" in
State " starts to search for after (each character is a Term in phrase, with space-separated):First take Term1 " in " doicid
X and " in " key position 3 in doc, then retrieval takes the docid x and key position 9 of Term2 " state ".Then
The docid chained lists of all Term are done and are merged, the docid x that all Term meet is obtained, exists turning next to each Term
Whether the key position in doicid x continuous, and 3 is discontinuous with 9 here, then docid x do not meet phrase match as a result,
It eliminates.
When searching for " China love ", search string can obtain two groups of token by segmentation methods:" China ", " love " is right
Phrase match will be used in Chinese phrase " China ", " Term1Term2 " is processed into, i.e. " China ", prefix will be used for English
It matches " love* ", for two Query:It will be AND relation between PhraseQuery and PrefixQuery.Final phrase
With docid x are obtained, prefix matching also obtains docid x, the two AND, finally returns that docid x, does not consider that two groups of token exist
Tandem in original string.
In this application, the full-text index library Lucene to increase income by using Java is transplanted and is customized library of increasing income, and is made
The data search method obtained in the embodiment of the present application has the following advantages that:
1) professional java searches for Open Framework, and using numerous in J2EE, version continues iteration.
2) it writes for java layers completely, although operating on java virtual machines, efficiency by inputoutput test is not poor.
3) inverted index structure, space for time, 30w chat records need drain space less than 30M, write performance about 1s
2000 chat records.
4) good compatibility, no native, without the concern for compatibling problems such as 32/64 libraries.
5) customizability is strong, supports result scoring.
6) pure java facilitates debugging, orientation problem.
In some embodiments, the performance comparison experiment under mass data has been carried out, " input one is more for demand
A keyword returns to the matched chat record of how many item in how many session, each session ", experimental result is as follows:
1) " I " is searched for:
Message total amount (w:Ten thousand) | Hits | Lucene | SQL LIKE | FTS4 |
1w | 2018 | 49 | 56 | 221 |
2w | 4082 | 76 | 97 | 403 |
5w | 10272 | 172 | 226 | 989 |
10w | 20504 | 257 | 426 | 2101 |
15w | 30758 | 373 | 653 | 3131 |
20w | 41165 | 494 | 859 | 4221 |
30w | 61671 | 762 | 1272 | 6440 |
2) search " I you ":
Message total amount (w:Ten thousand) | Hits | Lucene | SQL LIKE | FTS4 |
1w | 889 | 29 | 53 | 140 |
2w | 1787 | 87 | 124 | 253 |
5w | 4442 | 133 | 237 | 548 |
10w | 8857 | 161 | 469 | 1071 |
15w | 13262 | 244 | 707 | 1722 |
20w | 17622 | 282 | 909 | 2299 |
30w | 26485 | 375 | 1361 | 3474 |
Advantages of the apparent embodiment Lucene of the above results energy in terms of search efficiency, from cost of implementation and search efficiency
Angle considers that the equal SQL LIKE schemes of Lucene schemes and FTS4 schemes ratio are advantageously!
Exemplary media
After describing the method for exemplary embodiment of the invention, next, to exemplary embodiment of the invention
Medium illustrate.
In some possible embodiments, various aspects of the invention are also implemented as a kind of medium, store thereon
There is program code, it is above-mentioned " illustrative methods " for realizing this specification when said program code is executed by the processor of equipment
The step in the information acquisition method according to the various illustrative embodiments of the present invention described in part.
Specifically, for realizing following steps when the processor of the equipment executes said program code:It obtains to use by oneself
The character string of the pending search at family;The character string is subjected to word segmentation processing and packet transaction, generates mark group data, it is described
Mark group data include at least one of the first mark group and the second mark group, and first mark group is marked with described second
Group separately includes at least one key character;And provide search result by the mark group data, wherein pass through first
The character in first mark group is scanned for mode, by the second matching way to the word in second mark group
Symbol scans for.
In certain embodiments of the present invention, for realizing such as when the processor of the equipment executes said program code
Lower step:The character string of pending search from the user is obtained by intelligent electronic device.
In certain embodiments of the present invention, for realizing such as when the processor of the equipment executes said program code
Lower step:By in the character string Chinese and be digitally generated first mark group;And by the character string
English and symbol generate second mark group.
In certain embodiments of the present invention, for realizing such as when the processor of the equipment executes said program code
Lower step:Using each Chinese character in the character string as key character;And it will be every in the character string
One number is respectively as key character.
In certain embodiments of the present invention, for realizing such as when the processor of the equipment executes said program code
Lower step:Using the continuous English character in the character string as key character;By each symbol in the character string point
It Zuo Wei not key character;Wherein, the symbol includes:Punctuation mark, the spoken and written languages symbol of non-Chinese English and special word
Symbol.
In certain embodiments of the present invention, for realizing such as when the processor of the equipment executes said program code
Lower step:The mark group data are inputted into Lucene requestors, search result is provided by Lucene requestors.
In certain embodiments of the present invention, for realizing such as when the processor of the equipment executes said program code
Lower step:The character in first mark group is scanned for by phrase match mode.
In certain embodiments of the present invention, for realizing such as when the processor of the equipment executes said program code
Lower step:The character in first mark group is scanned for by prefix matching mode.
In certain embodiments of the present invention, for realizing such as when the processor of the equipment executes said program code
Lower step:Word segmentation processing is carried out to source data by self-defined segmentation methods, to generate index data;And by the index number
According to Lucene engines are sent to, so that the Lucene engines are indexed processing.
In certain embodiments of the present invention, for realizing such as when the processor of the equipment executes said program code
Lower step:The index data is handled by WhitespaceAnalyzer methods, generates the first data;By first data
It is sent to Lucene engines.
It should be noted that:Above-mentioned medium can be readable signal medium or readable storage medium storing program for executing.Readable storage medium
Matter can be for example but not limited to:System, device or the device of electricity, magnetic, optical, electromagnetic, infrared ray or semiconductor, or it is arbitrary
Above combination.The more specific example (non exhaustive list) of readable storage medium storing program for executing includes:With one or more conducting wires
Electrical connection, portable disc, hard disk, random access memory (RAM), read-only memory (ROM), erasable type may be programmed read-only storage
Device (EPROM or flash memory), optical fiber, portable compact disc read only memory (CD-ROM), light storage device, magnetic memory device or
The above-mentioned any appropriate combination of person.
Readable signal medium may include in a base band or as the data-signal that a carrier wave part is propagated, wherein carrying
Readable program code.Diversified forms may be used in the data-signal of this propagation, including but not limited to:Electromagnetic signal, light letter
Number or above-mentioned any appropriate combination.Readable signal medium can also be any readable medium other than readable storage medium storing program for executing,
The readable medium can send, propagate either transmission for being used by instruction execution system, device or device or being tied with it
Close the program used.
The program code for including on readable medium can transmit with any suitable medium, including but not limited to:Wirelessly, have
Line, optical cable, RF etc. or above-mentioned any appropriate combination.
It can be write with any combination of one or more programming languages for executing the program that operates of the present invention
Code, described program design language include object oriented program language-Java, C++ etc., further include conventional
Procedural programming language-such as " C " language or similar programming language.Program code can be fully in user
It is executed on computing device, part executes or remotely counting completely on a remote computing on the user computing device for part
It calculates and is executed on equipment or server.In the situation for being related to remote computing device, remote computing device can pass through any kind
Network --- be connected to user calculating equipment including LAN (LAN) or wide area network (WAN)-, or, it may be connected to it is outer
Portion's computing device (such as being connected by internet using ISP).
Exemplary means
After describing the medium of exemplary embodiment of the invention, next, with reference to figure 3 to the exemplary reality of the present invention
The data serching device 300 for applying mode illustrates.
Fig. 3 diagrammatically illustrates a kind of block diagram of data serching device according to an embodiment of the invention.
With reference to shown in Fig. 3, information acquisition device 300 according to an embodiment of the invention, including:Receiving module 302, participle
Module 304, enquiry module 306.
Specifically, receiving module 302 is for obtaining character string to be searched from the user;Word-dividing mode 304 is used for will
The character string carries out word segmentation processing and packet transaction, generates mark group data, and the mark group data include at least the first mark
One of note group and the second mark group, first mark group separately include at least one key character with the second mark group;
Enquiry module 306 is used to provide search result by the mark group data, wherein the first inquiry submodule, for passing through the
One matching way scans for the character in first mark group, the second inquiry submodule, for passing through the second match party
Formula scans for the character in second mark group.
In certain embodiments of the present invention, aforementioned schemes are based on, receiving module 302 is additionally operable to set by smart electronics
It is standby to obtain character string to be searched from the user.
In certain embodiments of the present invention, aforementioned schemes are based on, word-dividing mode 304 includes:First participle submodule,
For by the character string Chinese and be digitally generated first mark group;And second participle submodule, for leading to
The English and symbol crossed in the character string generate second mark group.
In certain embodiments of the present invention, aforementioned schemes are based on, first participle submodule 3022 is arranged to:By institute
Each Chinese character in character string is stated respectively as key character;And respectively by each number in the character string
As key character.
In certain embodiments of the present invention, aforementioned schemes are based on, the second participle submodule 3024 is arranged to:By institute
The continuous English character in character string is stated as key character;Using each symbol in the character string as keyword
Symbol;Wherein, the symbol includes:The spoken and written languages symbol and spcial character of punctuation mark, non-Chinese English.
In certain embodiments of the present invention, aforementioned schemes are based on, enquiry module is set as by 306:By the label
Group data input Lucene requestors, and search result is provided by Lucene requestors.
In certain embodiments of the present invention, aforementioned schemes are based on, enquiry module 306 is also configured to:By the mark
Note group data provide search result by the application end input inquiry device in android system, by Lucene requestors.
In certain embodiments of the present invention, aforementioned schemes are based on, further include:Import modul 308 is used for Lucene
Source code packet imports in android system.
In certain embodiments of the present invention, aforementioned schemes are based on, import modul 308 further includes:Submodule is cut,
It is cut out for carrying out source code when importing Lucene source code packets in android system.
In certain embodiments of the present invention, aforementioned schemes are based on, further include:Data module 310 is used for source data
Word segmentation processing is carried out, to generate index data;And index module 312 is drawn for the index data to be sent to Lucene
It holds up, so that the Lucene engines are indexed processing.
In certain embodiments of the present invention, aforementioned schemes are based on, index module 312 includes:Data submodule 3122
For handling the index data by WhitespaceAnalyzer methods, the first data are generated;And sending submodule
3124 by first data for being sent to Lucene engines.
In certain embodiments of the present invention, aforementioned schemes are based on, first inquires submodule 3022, including:Phrase
With unit, for being scanned for the character in first mark group by phrase match mode.
In certain embodiments of the present invention, aforementioned schemes are based on, second inquires submodule 3024, including:Prefix
With unit, for being scanned for the character in first mark group by prefix matching mode.
Exemplary computer device
After method, medium and the device for describing exemplary embodiment of the invention, next, introducing according to this hair
The computing device of bright another exemplary embodiment.
Person of ordinary skill in the field it is understood that various aspects of the invention can be implemented as system, method or
Program product.Therefore, various aspects of the invention can be embodied in the following forms, i.e.,:It is complete hardware embodiment, complete
The embodiment combined in terms of full Software Implementation (including firmware, microcode etc.) or hardware and software, can unite here
Referred to as circuit, " module " or " system ".
In some possible embodiments, at least one can be included at least according to the computing device of embodiment of the present invention
A processor and at least one processor.Wherein, the memory has program stored therein code, when said program code is by institute
State processor execute when so that the processor execute described in above-mentioned " illustrative methods " part of this specification according to this hair
Step in the information acquisition method of bright various illustrative embodiments.For example, the processor can execute as shown in fig. 1
Step S10, obtain the character string of pending search from the user;Step S12, by the character string carry out word segmentation processing and
Packet transaction generates mark group data, and the mark group data include at least one of the first mark group and the second mark group,
First mark group separately includes at least one key character with second mark group;Step S14 passes through the mark group
Data provide search result, wherein are scanned for the character in first mark group by the first matching way, by the
Two matching ways scan for the character in second mark group.
It should be noted that although being referred to several units or subelement of information acquisition device in above-detailed,
It is that this division is only exemplary, is not enforceable.In fact, according to the embodiment of the present invention, above description
Two or more modules or the feature and function of unit can be embodied in a module or unit.Conversely, above description
A module or the feature and function of unit can be further divided into and embodied by multiple modules or unit.
In addition, although the operation of the method for the present invention is described with particular order in the accompanying drawings, this do not require that or
Hint must execute these operations according to the particular order, or have to carry out shown in whole operation could realize it is desired
As a result.Additionally or alternatively, it is convenient to omit multiple steps are merged into a step and executed by certain steps, and/or by one
Step is decomposed into execution of multiple steps.
Although by reference to several spirit and principle that detailed description of the preferred embodimentsthe present invention has been described, it should be appreciated that, this
Invention is not limited to invented specific implementation mode, does not also mean that the feature in these aspects cannot to the division of various aspects
Combination is this to divide the convenience merely to statement to be benefited.The present invention is directed to cover appended claims spirit and
Included various modifications and equivalent arrangements in range.
Claims (10)
1. a kind of data search method, including:
Obtain the character string of pending search from the user;
The character string is subjected to word segmentation processing and packet transaction, generates mark group data, the mark group data include at least
One of first mark group and the second mark group, first mark group separately include at least one with second mark group
Key character;And
Search result is provided by the mark group data, wherein by the first matching way in first mark group
Character scans for, and is scanned for the character in second mark group by the second matching way.
2. according to the method described in claim 1, wherein, the character string being carried out word segmentation processing and packet transaction, generates mark
Note group data, the mark group data include at least one of the first mark group and the second mark group, including:
By in the character string Chinese and be digitally generated first mark group;And
Pass through the English and symbol generation second mark group in the character string.
3. according to the method described in claim 2, wherein, being marked by the Chinese in the character string with being digitally generated described first
Note group, including:
Using each Chinese character in the character string as key character;And
Each in the character string is digital as key character.
4. according to the method described in claim 2, wherein, passing through the English and symbol generation second mark in the character string
Note group, including:
Using the continuous English character in the character string as key character;And
Using each symbol in the character string as key character;
Wherein, the symbol includes:The spoken and written languages symbol and spcial character of punctuation mark, non-Chinese English.
5. according to the method described in claim 1, wherein, search result is provided by the mark group data, including:
The mark group data are inputted into Lucene requestors, search result is provided by Lucene requestors.
6. according to the method described in claim 5, wherein, the mark group data being inputted Lucene requestors, are passed through
Lucene requestors provide search result, including:
The mark group data are inputted into Lucene requestors by the application end in android system, are inquired by Lucene
Device provides search result.
7. according to the method described in claim 1, wherein, further including:
Word segmentation processing is carried out to source data, to generate index data;And
The index data is sent to Lucene engines, so that the Lucene engines are indexed processing.
8. a kind of data serching device, including:
Receiving module, for obtaining character string to be searched from the user;
Word-dividing mode generates mark group data, the mark group for the character string to be carried out word segmentation processing and packet transaction
Data include at least one of the first mark group and the second mark group, and first mark group is separately included with the second mark group
At least one key character;
Enquiry module, for providing search result by the mark group data, wherein the first inquiry submodule, for passing through
First matching way scans for the character in first mark group, the second inquiry submodule, for passing through the second matching
Mode scans for the character in second mark group.
9. a kind of medium, is stored thereon with program, realized such as any one of claim 1 to 7 when which is executed by processor
The method.
10. a kind of electronic equipment, including:Processor and memory, the memory are stored with executable instruction, the processor
For calling the executable instruction of the memory storage to execute the method as described in any one of claim 1 to 7.
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