CN100492290C - Method for acquiring and converting the state of component in the time of operation during software dynamic evolvement - Google Patents
Method for acquiring and converting the state of component in the time of operation during software dynamic evolvement Download PDFInfo
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Abstract
The invention discloses a component running status acquiring and conversion method of software dynamic evolvement, belonging to the software maintenance technical field, including following procedures that: the realization source codes, the component protocols and the internal operation logics of the new and the old versions of the component are analyzed, the internal structure logic representation models of the component are built respectively; compared with the two logic representation models, the corresponding member variables and syntactic structures are identified, the detailed description of the relativity between the new and the old versions of the component is returned, the component status information which needs to be acquired and converted to the new version is defined; the logic representation model of the new version of the component is modified, the interface method is increased in order to export and store the running status information of the old version; in addition, the interface method is increased in order to import and convert the status information; based on the modified logic representation model of the new version of the component, the source codes of the new version of the component are regenerated. The method of the invention can effectively acquire and convert component running status information and realize the status conversion function of the dynamic evolvement support system.
Description
Technical field
The present invention relates to the method in a kind of telecommunication technology field, specifically is the obtaining and conversion method of member run time behaviour in a kind of software dynamic evolvement.
Background technology
Applied software systems comprise the life-support system in space flight support system, online service system, the medical application etc., need system that 24/7/365 availability is provided, system break means will pay through the nose even threat to life the ability that dynamically develops when system software must have operation.It generally includes many mutual members mutually, these members are respectively done for oneself one and are independently made up or dispensing unit, the interface and the explicit environment that comprise by the contract appointment rely on, have clear and definite and well-defined task, software component can separate configurations, and integrate by the third party, because the design of high modularization, develop when being very suitable for moving based on the software of member.Yet, member dynamically replaces the task of remaining individual complexity, and mainly owing between different editions, realize the inside of member and running status all may change, the consistance that keeps runtime system is included in the state that enlivens in the member and must be switched in the member redaction.The loading and the replacement operation of redaction construction part module all paid close attention in the work that great majority are relevant with the dynamic evolution of component-based software at present, and of paramount importance problem was left the application programmer for during often this dynamically developed the realization of state exchange logic, or ignored fully.
Find by prior art documents, mention in " Dynamic Software Updating " (dynamic software update) article that Michael Hicks etc. delivered on the 1049th to 1096 page of " ACM Transactions onProgramming Languages and Systems " (ACM program language and system's journal) 2005 the 27th the 6th phase of volume and provide the instrument support, can generate transcode for the variable that variable name does not change to the state exchange in the software dynamic evolvement.Its weak point is, be subject to a certain specific language and environment (method of Michael Hicks is mainly class C language upgrading support is provided), and only provide the simple framework of conversion realization for the user, the conversion to state itself does not provide intelligentized support, and general available method is not provided yet.Therefore, fundamentally address this problem for useful support is provided, the present invention provides method at obtaining with transfer problem of member run time behaviour in the software dynamic evolvement specially, to increase the rank that software dynamic evolvement is supported automatically.
Summary of the invention
The present invention is directed to the deficiency that prior art exists, obtaining and conversion method of member run time behaviour in a kind of software dynamic evolvement is provided, make it by direct analysis and obtain the run time behaviour information of member legacy version, derive and decompose, the member redaction generates corresponding transfer function and imports status information, and the conversion of specific implementation state when the member initialization.
The present invention is achieved through the following technical solutions, the present invention includes following steps:
Step 1, by the service logic between realization source code, component specification and the member's class of code construction solution parser resolution component redaction and legacy version, set up the logical expressions model of component inside structure respectively, and the definition of resolution component external interface and implementation method information;
Described logical expressions model is represented for the digraph structure, comprises the mutual and contact between class, attribute, the operation.
The definition of described member external interface and implementation method information, be meant member do as a whole realization will be when external user provides explicit calling interface the constraint and the contract that must satisfy.
Step 2, by the logical expressions model of the comparison function in the state supervisor than more recent version and legacy version, discern corresponding member variable and syntactic structure in two versions, the correlativity of returning between version is described in detail, mutual and the communication information between combination member determines should be acquired and be transformed in the member legacy version current to be developed the member status information to be converted of redaction;
Mutual and the communication information between described member is meant by synthetic, the mutual and communication mechanism of component management module in the member operation platform according to member, member dependence and mutual information when institute analyzes the operation that obtains.Because therefore the obtaining and changing of member run time behaviour when method provided by the present invention is only paid close attention to software systems and dynamically developed mutual between this member and the communication information are provided provided by the outside.
Described member status information, if the current run mode that is not in of the member of waiting to develop, then required definite member status information is arranged in class members's variable of forming this member fully, comprises type of variables and value; If member to be developed is in run mode, then required definite member status information comprises class members's type of variables and the value of forming this member, and points to quoting of opened file, other component objects or external function storehouse.
Member described to be developed is in run mode, it is the notion on the time dimension, be meant in using implementation, decidable dynamic evolution equivalent point, be that the affected part of application system can arrive certain consistent state, the member new and old edition can of equal value change, and on this dynamic evolution equivalent point, the new structural member version can be rationally and continued the task that the old member version of execution stays safely.
Described opened file is meant in using implementation, but needs the operation file of visit.
Described other component objects are meant in using implementation, the member instance objects that the instance objects in the member of waiting to develop directly or indirectly refers to.
Described external function storehouse is meant that source code is not directly visited, and can only carry out the position at mutual pre-defined function place by function interface in using implementation.
The described method of determining should be acquired and be transformed in the member legacy version current to be developed the member status information of redaction, specific as follows:
The first step, according to the logical expressions model of legacy version and redaction, compare corresponding relation by the comparison function in the state supervisor, be identified in class members's variable that corresponding meaning is arranged in two member versions, and known reconstruct in the detection means redaction, form between version correlativity and describe in detail;
In second step, analyze correlativity detailed description information between legacy version and redaction, the corresponding relation in the derivation member new and old edition between variable, class, attribute and the operation;
In the 3rd step,, determine to need in two member versions to carry out the member variable and the interface reference information of run time behaviour information extraction and conversion according to analysis result.
Step 3, according to analyzing in the step 2 and definite resulting result, the definition of resulting member external interface and implementation method information in the integrating step one, revise the logical expressions model of member redaction, increase interface method, from legacy version, derive and preserve the run time behaviour information of member legacy version;
Step 4, revise the logical expressions model of member redaction, the definition of resulting member external interface and implementation method information in the integrating step one, and the member status information to be converted that obtains in the step 2, increase interface method, by the status information that the member redaction imports and conversion is obtained;
Describedly import and the method for the status information that conversion is obtained by the member redaction, specific as follows:
The first step, judge member status information to be converted, if the member variable that the existence value need be consistent increases the state mapping function, read and import the variate-value of corresponding class members's variable by this function, and this variate-value is mapped to class members's variable of correspondence in the member redaction;
In second step, judge member status information to be converted, if the class members's variable that exists type to change, increase the type conversion function, read and import the types value of respective class member variable by this function, carry out type conversion, and be mapped to class members's variable corresponding in the member redaction;
The 3rd step, judge member status information to be converted, if have method call and interface reference information, need to keep pointing to the reference information in opened file, other component objects or external function storehouse, increase and quote redirected function, read and import this reference information by this function, and pass in the member redaction corresponding interface, via redirect operation, make corresponding interface in the member redaction duplicate quoting of original sensing opened file, other component objects or external function storehouse in the member legacy version.
Step 5 based on the member redaction logical expressions model of having revised, regenerates the source code of member redaction, specific implementation from old member version derive, import and transition status information to the function of new structural member version.
Compared with prior art, the present invention has the following advantages and good effect: (1) robotization feature: the present invention realized the member run time behaviour correlation analysis, determine, obtain and switch process, needed human intervention step only is the realization that needs to be provided by the programmer member new and old edition, the ability that the member state obtains automatically and changes when possessing operation; (2) ease for use and high efficiency: component software system safeguard that the developer is when making up dynamic evolution back-up system, only need the external interface of simple increase method, just can directly use the inventive method, realize obtaining and changing of member run time behaviour in the software dynamic evolvement efficiently; (3) extensibility: the present invention is applicable to the programming pattern of component-oriented, by simple increase distributivity and movability feature, just can promote expanding to distributed environment and mobile computing system.
Description of drawings
Fig. 1 is a workflow diagram of the present invention;
Fig. 2 determines the workflow diagram of member status information for the present invention;
The workflow diagram that Fig. 3 imports and changes for member status information of the present invention.
Embodiment
Provide the detailed description and the embodiment of the embodiment of the invention below in conjunction with accompanying drawing: present embodiment is that prerequisite is implemented with of the present invention and technical scheme; provide detailed embodiment and process, but protection scope of the present invention is not limited to following examples.
Member legacy version (Component_v1) that present embodiment relates to and member redaction (Component_v2), all realize based on the Java technology, the realization of each member mainly comprises some java classs (Java Class), also comprise and be used to the terminal user to provide some function necessary other resources, comprise html file, help document, icon.Therefore, when operation, the member example is a set of object.Each member all comprises the code construction solution parser (Code Parser) of an acquiescence, is used for the auxiliary logical expressions meta-model (Mata Model) that generates member.In running software, each member all corresponding a member container (Container), comprise various information about member, as component mark, element type, the service interface that can provide, interactive information, communication mechanism, condition managing, obtain and the conversion operations of member state are specifically managed by the state supervisor in the member container (State Manager), and comparison of member state and analytical approach realize all being contained in this state supervisor.
As shown in Figure 1, present embodiment may further comprise the steps:
(1) based on the method for expressing of Java meta-model, the main method codeParser () by code construction solution parser is the service logic between realization source code, component specification and the member's class of resolution component legacy version Component_v1 and redaction Component_v2 respectively.Code structure resolver resolves obtains representing corresponding Java meta-model with new and old edition component inside architecture logic respectively, the Java meta-model represents that for the digraph structure Java meta-model comprises the mutual and contact between class, attribute (comprising variable's attribute, object type and return type), the operation (comprising method call, interface reference).In addition, code construction solution parser is also resolved the definition and the implementation method information of the component interface obtain new and old edition respectively, the definition of component interface and implementation method information comprise member do as a whole realization will be when external user provides explicit calling interface institute must satisfied constraint (Pre-conditions, Post-conditions) and contract;
(2) as shown in Figure 2, corresponding relation between the meta-model of the logical expressions by comparison function Compare () comparison means legacy version Component_v1 in the state supervisor and redaction Component_v2, discern the class instance variable that corresponding meaning is arranged in two member versions, there is the class instance variable of corresponding meaning to be meant associate class information, for the name of the class instance variable among the Component_v2 and type are same as certain class instance variable among the Component_v1, and the reconfiguration information of detection new structural member, reconfiguration information is meant the difference category information, is class among the redaction Component_v2, attribute, the change of the mutual and contact generation between the operation.At last, with the XML document form, preserve corresponding relation and reconfiguration information between the above-mentioned resulting member;
(3) as shown in Figure 2, carry out correlation analysis for the resulting XML file of step (2), by this XML file of DOM resolver resolves, obtain member variable among member legacy version Component_v1 and the redaction Component_v2, class, corresponding relation between attribute and the operation, and set up the corresponding relation list structure, this corresponding relation list structure is explicit, and to indicate the attribute and the class instance variable among the legacy version Component_v1 of certain the class instance variable in redaction Component_v2 identical, or name is identical but change has taken place types of variables, perhaps such instance variable is deleted, simultaneously, this corresponding relation list structure gives method call possible among the legacy version Component_v1 and interface reference information, and indicates at redaction Component_v2 whether corresponding quoting is arranged.
(4) as shown in Figure 2, the semantic information that the corresponding relation list structure is comprised in derivation and the analytical procedure (3), definite need carry out the member status information to be converted that status information is extracted and changed, and the 3 classes member status information to be converted that comprises among the legacy version Component_v1 comprises:
The class instance variable that a) need be consistent, promptly with legacy version Component_v1 in the identical class instance variable of attribute of class instance variable, and its variate-value consistance when in redaction Component_v2, needing to guarantee operation;
B) instance variable that changed of type, promptly the class instance variable among the legacy version Component_v1 has class instance variable corresponding with it in redaction Component_v2, but change has taken place in type of variables among the redaction Component_v2;
C) method call and interface reference information, but be included in the interface of quoting that points to opened operation file among the legacy version Component_v1, the direct or indirect method call that other member instance objects are carried out, and the function interface that outside pre-defined function storehouse is called.
Relevant during the operation of described method call and interface reference information and software systems, can not derive by static fully, but need dynamically obtain, by synthetic, the mutual and communication mechanism of the component management device in the member operation platform, rely on and interactive information when analyzing the member operation that obtains according to legacy version Component_v1 member.
(5) according to determined status information to be converted in step (4), the interface definition of resulting redaction Component_v2 member and implementation method information in the integrating step (1), revise the logical expressions Java meta-model of redaction Component_v2, increase interface method getState (), from legacy version Component_v1, derive all types of status informations to be converted, and preserve respectively.
(6) as shown in Figure 3, judge member status information to be converted, if there is the class instance variable that need be consistent, then on the basis of step (5), further revise the logical expressions Java meta-model of redaction Component_v2, increase state value mapping function valueTransfer (), read the attribute and the variate-value of the instance variable that need be consistent among the legacy version Component_v1 that derives by interface method getState () by this function, and will when redaction Component_v2 is initialised, this variate-value be composed to class instance variable of the same name corresponding among the redaction Component_v2.
(7) as shown in Figure 3, judge member status information to be converted, if the instance variable that exists type to change, then on the basis of step (5), further revise the logical expressions Java meta-model of redaction Component_v2, increase type conversion function typeTransfer (), read the instance variable information that the types of variables in redaction Component_v2 that derives by interface method getState () has changed by this function, carry out type conversion, and will when redaction Component_v2 is initialised, make the variable's attribute of the original type among the legacy version Component_v1 convert new type to.It is reusable that type conversion function typeTransfer is configured the back, and can carry out recursive call, promptly call typeTransfer1 earlier, and then call typeTransfer2, form new type conversion function typeTransfer ' (typeTransferl → typeTransfer2) in view of the above, but the type conversion function that predefine is commonly used, and in use customize by the user.
(8) as shown in Figure 3, judge member status information to be converted, if have method call and interface reference information, then on the basis of step (5), further revise the logical expressions Java meta-model of redaction Component_v2, increase to quote and be redirected function refRedirect (), external call and reference information when reading the operation that in legacy version Component_v1, is comprised of deriving by interface method getState () by this function, via redirect operation, but will when being initialised, redaction Component_v2 make corresponding interface among the redaction Component_v2 duplicate the interface of quoting of the opened operation file of original sensing among the legacy version Component_v1, the direct or indirect method call that other member instance objects are carried out, and the function interface that outside pre-defined function storehouse is called.
(9) according to the redaction Component_v2 logical expressions Java meta-model of having revised, original code of combination member redaction Component_v2 is realized, generate new redaction Component_v2 member source code, the redaction Component_v2 member of this moment specific implementation is derived member run time behaviour information from legacy version Component_v1, and imports and conversion operations.New redaction Component_v2 is deployed to member when operation platform, and carries out initialization opportunity, realized obtaining and changing of member run time behaviour in suitable software evolution.
Compared with prior art; present embodiment can be when software component has redaction to realize; only provide the Java of member redaction and legacy version to realize by the software maintenance personnel; need not other interventions; the obtaining and changing of member status information when the described method of present embodiment just can realize moving can be saved when obtaining with the translation building block status information needed stopping and being interrupted when running software, static state obtain needed stop time such as status information, software restarting and avoid the operation of software.Simultaneously, in the present embodiment by described when operation member state importing, derivation and the conversion method of obtaining the member run time behaviour that generates with conversion method realize, avoid judging manually that by the maintainer status information and generation state obtain time loss that is caused with conversion method and the mistake that may cause.By collaborative and the environment dependency characteristic of increase distributing, also in fact can be used for realizing distributing and mobile environment under the software component run time behaviour obtain and change.
Claims (11)
1. the obtaining and conversion method of member run time behaviour in the software dynamic evolvement is characterized in that, may further comprise the steps:
Step 1, by the service logic between realization source code, component specification and the member's class of code construction solution parser resolution component redaction and legacy version, set up the logical expressions model of component inside structure respectively, and the definition of resolution component external interface and implementation method information;
Step 2, by the logical expressions model of the comparison function in the state supervisor than more recent version and legacy version, discern corresponding member variable and syntactic structure in two versions, the correlativity of returning between version is described in detail, mutual and the communication information between combination member determines should be acquired and be transformed in the member legacy version current to be developed the member status information to be converted of redaction;
Step 3, the logical expressions model of modification member redaction increases the interface method of derivation run time behaviour information from legacy version and this derivation status information is preserved the interface operable method;
Step 4 is further revised the logical expressions model of member redaction, increases by the member redaction to import the interface method of the status information of obtaining and this importing status information is carried out the interface method of conversion operations;
Step 5 based on the member redaction logical expressions model of having revised, regenerates the source code of member redaction, specific implementation from old member version derive, import and transition status information to the function of new structural member version.
2. the obtaining and conversion method of member run time behaviour in the software dynamic evolvement according to claim 1 is characterized in that, in the step 2, described logical expressions model is represented for the digraph structure, comprises the mutual and contact between class, attribute, the operation.
3. the member run time behaviour obtains and conversion method in the software dynamic evolvement according to claim 1, it is characterized in that, in the step 2, the described method of determining should be acquired and be transformed in the member legacy version current to be developed the member status information of redaction, specific as follows:
The first step, according to the logical expressions model of legacy version and redaction, compare corresponding relation by the comparison function in the state supervisor, be identified in class members's variable that corresponding meaning is arranged in two member versions, and known reconstruct in the detection means redaction, form between version correlativity and describe in detail;
In second step, analyze correlativity detailed description information between legacy version and redaction, the corresponding relation in the derivation member new and old edition between variable, class, attribute and the operation;
In the 3rd step,, determine to need in two member versions to carry out the member variable and the interface reference information of run time behaviour information extraction and conversion according to analysis result.
4. the member run time behaviour obtains and conversion method in the software dynamic evolvement according to claim 1, it is characterized in that, in the step 2, mutual and the communication information between described member, be meant by synthetic, the mutual and communication mechanism of component management module in the member operation platform according to member, member dependence and mutual information when institute analyzes the operation that obtains.
5. the member run time behaviour obtains and conversion method in the software dynamic evolvement according to claim 1, it is characterized in that, in the step 2, described member status information, the current run mode that is not in of member if wait to develop, then required definite member status information is arranged in class members's variable of forming this member fully, comprises type of variables and value; If member to be developed is in run mode, then required definite member status information comprises class members's type of variables and the value of forming this member, and points to quoting of opened file, other component objects or external function storehouse.
6. the obtaining and conversion method of member run time behaviour in the software dynamic evolvement according to claim 5 is characterized in that, described opened file is meant in using implementation, but needs the operation file of visit.
7. the member run time behaviour obtains and conversion method in the software dynamic evolvement according to claim 5, it is characterized in that, described other component objects are meant in using implementation, the member instance objects that the instance objects in the member of waiting to develop directly or indirectly refers to.
8. the member run time behaviour obtains and conversion method in the software dynamic evolvement according to claim 5, it is characterized in that described external function storehouse is meant in using implementation, source code is not directly visited, and can only carry out the position at mutual pre-defined function place by function interface.
9. the member run time behaviour obtains and conversion method in the software dynamic evolvement according to claim 5, it is characterized in that, member described to be developed is in run mode, it is the notion on the time dimension, be meant in using implementation, decidable dynamic evolution equivalent point, be that the affected part of application system can arrive certain consistent state, the member new and old edition can of equal value be changed, on this dynamic evolution equivalent point, the new structural member version can be rationally and is continued to carry out the task that old member version stays safely.
10. the obtaining and conversion method of member run time behaviour in the software dynamic evolvement according to claim 1 is characterized in that, in the step 4, describedly imported and the method for the status information that conversion is obtained by the member redaction, and be specific as follows:
The first step, judge member status information to be converted, if the member variable that the existence value need be consistent increases the state mapping function, read and import the variate-value of corresponding class members's variable by this function, and this variate-value is mapped to class members's variable of correspondence in the member redaction;
In second step, judge member status information to be converted, if the class members's variable that exists type to change, increase the type conversion function, read and import the types value of respective class member variable by this function, carry out type conversion, and be mapped to class members's variable corresponding in the member redaction;
The 3rd step, judge member status information to be converted, if have method call and interface reference information, need to keep pointing to the reference information in opened file, other component objects or external function storehouse, increase and quote redirected function, read and import this reference information by this function, and pass in the member redaction corresponding interface, via redirect operation, make corresponding interface in the member redaction duplicate quoting of original sensing opened file, other component objects or external function storehouse in the member legacy version.
11. the member run time behaviour obtains and conversion method in the software dynamic evolvement according to claim 1, it is characterized in that, in the step 1, the definition of described member external interface and implementation method information, be meant member do as a whole realization will be when external user provides explicit calling interface the constraint and the contract that must satisfy.
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| CN101655797B (en) * | 2009-09-25 | 2013-09-18 | 深圳创维数字技术股份有限公司 | Establishing method of member and function library with description information |
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| CN101739297B (en) * | 2010-01-21 | 2012-10-03 | 上海交通大学 | Service object state transfer system in pervasive service trend update and method thereof |
| CN101794224B (en) * | 2010-02-26 | 2013-11-13 | 中国人民解放军国防科学技术大学 | Software run-time property monitoring method based on property specification mode |
| CN101963913B (en) * | 2010-11-04 | 2013-03-27 | 南京大学 | Method for online evolution of component based on transactions |
| CN102023886B (en) * | 2010-12-27 | 2013-01-09 | 北京像素软件科技股份有限公司 | Resource differential processing method for data in software |
| CN102508667B (en) * | 2011-11-11 | 2014-06-18 | 迈普通信技术股份有限公司 | Method and device for using third-part JavaScript library |
| CN103164325B (en) * | 2011-12-09 | 2016-04-06 | 北京新媒传信科技有限公司 | A kind of method and apparatus of control coding |
| CN102880493B (en) * | 2012-09-25 | 2015-04-08 | 南京大学 | Method for automatically analyzing dynamic dependency relationship between members |
| CN104317556B (en) | 2014-10-22 | 2018-03-16 | 华为技术有限公司 | A kind of streaming application upgrade method, main controlled node and stream calculation system |
| US10216819B2 (en) * | 2015-03-20 | 2019-02-26 | International Business Machines Corporation | Automated identification of complex transformations and generation of subscriptions for data replication |
| CN106708547B (en) * | 2015-11-12 | 2020-10-27 | 卓望数码技术（深圳）有限公司 | Service plug-in management method and system |
| CN107861725B (en) * | 2017-11-22 | 2020-12-22 | 北京酷我科技有限公司 | iOS data reverse automatic analysis strategy |
| CN108804078A (en) * | 2018-04-20 | 2018-11-13 | 杭州电子科技大学 | A kind of software design pattern reconstructing method based on template |
| CN112328256B (en) * | 2020-11-19 | 2023-04-25 | 四川创智联恒科技有限公司 | Method for automatically generating source code of structural body analyzer |
| CN112764788B (en) * | 2021-01-19 | 2023-06-16 | 南京大学 | Software dynamic update hot patch synthesis method based on program source code slice recombination |
| CN114020323B (en) * | 2022-01-04 | 2022-05-10 | 阿里云计算有限公司 | Model processing method, code obtaining method, device and electronic equipment |
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