CN102999816B - The workflow engine of personalized operation flow - Google Patents
The workflow engine of personalized operation flow Download PDFInfo
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Abstract
The present invention relates to a kind of workflow engine of personalized operation flow, comprise beginning unit, performance element template and end unit, this workflow engine realizes based on token streams mode, performance element template comprises human task, branch, converge, automatically perform, the unit such as sub-process and condition judgment, branch units is for the treatment of Branch Tasks, converge unit for converging Branch Tasks, sub-process unit is for generating one or more sub-process, condition judgment unit carries out task circulation for configuring circulation rule and selecting one according to circulation rule from many subsequent path, automatically perform the interface that unit operates for performing back-end data or calls external system, human task unit is for generating and performing the human task needing operational staff to complete some action could down to circulate.This workflow engine is conducive to the steering logic and the service logic that are separated software systems, realizes the operation flow of customized personal under the prerequisite without the need to change control logical OR source code.
Description
Technical field
The present invention relates to a kind of workflow engine of personalized operation flow.
Background technology
In the operation of enterprises and institutions of current government bodies, due to the introducing of various standardized management concept, the operation of each machine-operated enterprises and institutions is more and more significantly presented as the reasonably flowing such as information flow, cash flow, logistics, monetary value flow; These flowings more reasonable then often personnel divide the work more concrete, cooperate tightr between personnel, the avatar of this cooperation is one or more complete and efficient workflow necessarily, therefore, can say that workflow is ubiquitous.
But traditional administrative class software or to be software developer extract general character for the management process of enterprises and institutions of most government office designs, or being software developer forms for the real needs personalized customization of certain client.The administrative class software of these two kinds of forms has its unavoidable shortcoming, general character system often client finds to have with individual demand own conflicting more or less after spending to buy, still need software developer to carry out secondary development for its individual demand, such exploitation needs again to drop into a large amount of financial resource and material resource; And although individual sexual system meets the individual demand of single client, development cost and the maintenance cost of what the customization of this personalization brought thereupon is great number.And these two kinds of modes all cannot tackle a kind of situation: once the operation flow of client changes, follow-up repeatedly exploitation and maintenance may be caused.
Cause the reason of above-mentioned phenomenon be exactly in traditional administrative class software nearly all business process system be all that management service logic and software control logic are bundled, make once the service logic of client changes, to comprehensively have influence on the steering logic of software systems, thus must revise a large amount of source code and even again develop.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of workflow engine of personalized operation flow is provided, this workflow engine is conducive to the steering logic and the service logic that are separated software systems, realizes the operation flow of customized personal under the prerequisite without the need to change control logical OR source code.
For achieving the above object, technical scheme of the present invention is: a kind of workflow engine of personalized operation flow, comprise and start unit, performance element template and end unit, described workflow engine realizes based on token streams mode, and described performance element template comprises human task unit, branch units, convergence unit, automatically performs unit, sub-process unit and condition judgment unit;
Described branch units is for the treatment of parallel branch task, and it realizes logic and is: when flow process father token performs branch units, and described branch units judges the generation situation of subsequent path, then produces corresponding sub-token according to the number of subsequent path;
Described convergence unit and described branch units match and use, for converging Branch Tasks, it realizes logic: when the sub-token in branch units arrives convergence unit, whether other the sub-token of the flow process father token that sub-token described in described convergence unit judges is corresponding has reached convergence unit all, take out corresponding flow process father token, then described sub-token is destroyed, and drive described flow process father token streams forward convergence unit to and down circulate from described convergence unit, otherwise destroy described sub-token;
Described sub-process unit is for generating one or more sub-process, it realizes logic: when flow process father token performs sub-process unit, described sub-process unit creates one or more sub-token accordingly according to the subflow number of passes of setting, and driven element token circulates in the sub-process of correspondence; At the end of having sub-process, judge whether other sub-process terminates all, namely judge whether the sub-token in other sub-process is all destroyed, be, drive flow process father token down to circulate, otherwise only destroy the sub-token terminated in sub-process, do not do other operation;
Described condition judgment unit carries out task circulation for configuring circulation rule and selecting one that meets circulation condition according to circulation rule from many subsequent path, need with regulation engine with the use of, the logic that realizes of described condition judgment unit is: when flow process token performs condition judgment unit, described condition judgment unit takes out pre-configured judgment rule and passes to regulation engine, logical calculated is carried out whether to meet circulation condition to each bar subsequent path, then return results according to the calculating of regulation engine the subsequent path selecting to meet circulation condition to circulate,
The described interface automatically performing unit and operate for performing back-end data or call external system, need the program that pre-configured tasks carrying need call, it realizes logic: when flow process token perform automatically perform unit time, described in automatically perform cell call and perform corresponding program; The described unit that automatically performs is provided with an attribute whether automatically performed, when this attribute is true, after executing corresponding program, flow process token flows directly to next unit, otherwise at the described unit that automatically performs, flow process token will wait for that extraneous driving could down circulate;
Described human task unit is for generating and performing the human task needing operational staff to complete certain action could down to circulate, it realizes logic: when flow process token performs human task unit, described human task cell call task manager produces corresponding human task, and now flow process token is parked in active cell until human task continues after completing down to circulate again.
Compared with prior art, the invention has the beneficial effects as follows:
1, be separated steering logic and the service logic of software systems, make the change of service logic transparent for steering logic.
2, utilize the software systems of Developing Workflow Engine of the present invention can according to the operation flow of the customized personalization of concrete business demand, and without change control logic, even without the need to revising source code.
3, provide flexibly, abundant standard development interface, developing instrument developer being adopted oneself be accustomed to carries out customizing and enlargement module on the platform.
4, support to all Sybases and the powerful fault-tolerant ability to data are provided.
Accompanying drawing explanation
Fig. 1 is the frame diagram of the workflow engine of the embodiment of the present invention.
Embodiment
The workflow engine of the personalized operation flow of the present invention, as shown in Figure 1, comprise and start unit, performance element template and end unit, described workflow engine realizes based on token streams mode, and described performance element template comprises human task unit, branch units, convergence unit, automatically performs unit, sub-process unit and condition judgment unit;
Described branch units is for the treatment of parallel branch task, this unit does not need manual intervention, it realizes logic: when flow process father token performs branch units, and described branch units judges the generation situation of subsequent path, then produces corresponding sub-token according to the number of subsequent path.And flow process father token is now also at described branch units, just its state is not negotiable, and branch units is that needs and money order unit are matching used, namely wants one_to_one corresponding.
Described convergence unit and described branch units match and use, for converging Branch Tasks, this unit does not also need manual intervention, it realizes logic: when the sub-token in branch units arrives convergence unit, whether other the sub-token (i.e. the fraternal token of described sub-token) of the flow process father token that sub-token described in described convergence unit judges is corresponding has reached convergence unit all, then take out corresponding flow process father token by described sub-token, then described sub-token is destroyed, and drive described flow process father token streams forward convergence unit to and down circulate from described convergence unit, otherwise destroy described sub-token.
Described sub-process unit is for generating one or more sub-process, also be realized by the mode of sub-token, this unit is also a link not needing manual intervention, it realizes logic: when flow process father token performs sub-process unit, described sub-process unit creates one or more sub-token accordingly according to the subflow number of passes of setting, and driven element token circulates in the sub-process of correspondence; At the end of having sub-process, judge whether corresponding fraternal sub-process terminates all, namely judges whether the sub-token in other sub-process is all destroyed, is, drive flow process father token down to circulate, otherwise only destroy the sub-token terminated in sub-process, do not do other operation.
Described condition judgment unit, namely route judges, this element does not also need manual intervention, but needs to configure routing rule.Described condition judgment unit carries out task circulation for configuring circulation rule and selecting one that meets circulation condition according to circulation rule from many subsequent path, need with regulation engine with the use of, the logic that realizes of described condition judgment unit is: when flow process token performs condition judgment unit, described condition judgment unit takes out pre-configured judgment rule and described judgment rule is passed to regulation engine, logical calculated is carried out whether to meet circulation condition to each bar subsequent path, then return results according to the calculating of regulation engine the subsequent path selecting to meet circulation condition to circulate.As for the situation having A, B, C tri-subsequent path, circulation rule is passed to regulation engine and is calculated by condition judgment unit, first judge whether subsequent path A meets circulation condition, then circulate along subsequent path A, path B, C do not do to judge, otherwise whether continuation calculated for subsequent path B, C meet circulation condition.
The described interface automatically performing unit and operate for performing back-end data or call external system, also manual intervention is not needed, but need the program that pre-configured tasks carrying need call, it realizes logic: when flow process token perform automatically perform unit time, described in automatically perform cell call and perform corresponding program; The described unit that automatically performs is provided with an attribute whether automatically performed, when this attribute is true, after executing corresponding program, flow process token flows directly to next unit, otherwise at the described unit that automatically performs, flow process token will wait for that extraneous driving could down circulate, this external world drives the execution result of the program that is usually expressed as, the such as return data etc. of external system interface.
Described human task unit is for generating and performing the human task needing operational staff to complete certain action could down to circulate, it realizes logic: when flow process token performs human task unit, described human task cell call task manager produces corresponding human task, and now flow process token is parked in active cell until human task continues after completing down to circulate again.
Human task is generally single task role, but also there are special circumstances to conutersign exactly or many example tasks, when configuration in human task unit needs countersign, the human task of corresponding number will be produced according to the quantity of operational staff, but it not necessarily needs all tasks all to complete just driving flow process token execution, the condition that demand fulfillment drives can drive token to circulate, as task Percent Complete reach 50% or task complete and reach 3 time flow process token can be driven to circulate, these countersign circulation conditions can be configured in advance.
In human task unit of the present invention, extend two kinds of unit, one is many example element, and another kind of is countersign unit.Many example element are a kind of special shape of countersign unit in fact, and in the application of reality, example element more than this kind is many to coexist with sub-process unit, and in order to generate the sub-process of not determined number, after all sub-processes all complete, father's flow process could continue circulation.And conutersign unit and compare easy understand, in various administrative class system, the function needing higher level to examine and to conutersign exists on a large scale, so the present invention devises this unit, can set countersign rule simultaneously, specify countersign to terminate and the condition down circulated according to number percent, concrete number.
Usually in the construction of administrative class system, all need the check requirements of the execution time included in operational staff, to improve operational staff's work efficiency, therefore, workflow engine of the present invention also designs and achieves a time limit evaluation module used with human task unit matching, the time limit is examined accordingly, to examine the execution time of human task for configuring on human task unit.Wherein also configurablely whether festivals or holidays, quitting time etc. are eliminated the examination time limit.And two kinds of modes are roughly comprised for the calculating in examination time limit:
1) time point.Time point namely sometime, human task unit configures and examines the time limit accordingly, and when flow performing is to this unit, task manager can calculate the time point that this task completes according to the examination quantum clock configured.When system time arrives this moment, if business has configuration as the action of early warning or alarm etc., corresponding prompt facility can be triggered.
2) last.Last and represent that this unit is overtime after out experienced by the time how long afterwards from establishment, same, according to unit creation-time, system adds that this duration calculation goes out time-out time point, when system time arrives this moment, if business has configuration as the action of early warning or alarm etc., corresponding prompt facility can be triggered.
If certainly without the need to examining the execution time, examination time limit module also can not be configured.
Above-mentioned task manager mainly coordinates human task unit to use, for carrying out the judgement etc. of the establishment of human task, distribution and Flow driving according to human task unit configuration information, and combine the examination execution time of time limit module to human task and calculate and examine.It realize logic be in fact dissolved into human task unit realize logic, examination time limit, regulation engine have suffered.
Above-mentioned regulation engine is for calculating the logical condition of various complexity, and the regular expression mode of regulation engine support has: logical expression, such as A>B etc., and wherein A and B is conditional-variable title; Script (BSH script) and JAVA class.Script and JAVA class are all in order to satisfying personalized complex rule demand designs.
Regulation engine is mainly used in judging that subsequent cell is the need of establishment, and it acts on human task, condition, branch, sub-process unit.There is as human task is follow-up mulitpath to select, but a paths wherein can only be performed, now just need the corresponding rule of configuration, also can not configuration rule, perform any paths by artificial judgment.Regulation engine achieves following several mode to judge that path is moved towards:
1) logical expression
Judge according to existing business datum, as whether examination & verification is passed through etc. to carry out result of calculation.From realization, usually certain variate-value on the page or backstage and certain fixed value are carried out logical calculated and draw true or false, judge the trend in path.Such as arranging logical expression is param>1, then the page or backstage just need to carry out assignment to variable param, and this value will compare size with 1, draw the result of true or false.
2) script
Script, the embodiment of the present invention uses BSH as script, is convenient to amendment.Using script mainly to consider that complicated business logical OR rule changes situation more frequently, because can come into force in real time after script amendment, so just can reach without the need to restarting flow engine the effect wanted.The BSH script of configuration needs to return a result variable, and flow engine will judge the trend of flow process according to the value of this variable.
3) JAVA method
Configuration JAVA method is supplement the one of script in fact, lessly in application process uses.Its implementation is by inheriting corresponding interface, the logic realized in interface judges, final also needs returns an end value to regulation engine to judge follow-up flow process trend, and it is not very frequent but service logic very complicated situation that this kind of method is mainly used in changing.
Be more than preferred embodiment of the present invention, all changes done according to technical solution of the present invention, when the function produced does not exceed the scope of technical solution of the present invention, all belong to protection scope of the present invention.
Claims (4)
1. the workflow engine of a personalized operation flow, comprise and start unit, performance element template and end unit, it is characterized in that: described workflow engine realizes based on token streams mode, described performance element template comprises human task unit, branch units, convergence unit, automatically performs unit, sub-process unit and condition judgment unit;
Described branch units is for the treatment of parallel branch task, and it realizes logic and is: when flow process father token performs branch units, and described branch units judges the generation situation of subsequent path, then produces corresponding sub-token according to the number of subsequent path;
Described convergence unit and described branch units match and use, for converging Branch Tasks, it realizes logic: when the sub-token in branch units arrives convergence unit, whether other the sub-token of the flow process father token that sub-token described in described convergence unit judges is corresponding has reached convergence unit all, take out corresponding flow process father token, then described sub-token is destroyed, and drive described flow process father token streams forward convergence unit to and down circulate from described convergence unit, otherwise destroy described sub-token;
For generating one or more sub-process, it realizes logic: when flow process father token performs sub-process unit, described sub-process unit creates one or more sub-token accordingly according to the subflow number of passes of setting, and driven element token circulates in the sub-process of correspondence; At the end of having sub-process, judge whether other sub-process terminates all, namely judge whether the sub-token in other sub-process is all destroyed, be, drive flow process father token down to circulate, otherwise only destroy the sub-token terminated in sub-process, do not do other operation;
Described condition judgment unit carries out task circulation for configuring circulation rule and selecting one that meets circulation condition according to circulation rule from many subsequent path, need with regulation engine with the use of, the logic that realizes of described condition judgment unit is: when flow process token performs condition judgment unit, described condition judgment unit takes out pre-configured judgment rule and passes to regulation engine, logical calculated is carried out whether to meet circulation condition to each bar subsequent path, then return results according to the calculating of regulation engine the subsequent path selecting to meet circulation condition to circulate,
For performing back-end data operation or calling the interface of external system, need the program that pre-configured tasks carrying need call, it realizes logic and is: when flow process token perform automatically perform unit time, described in automatically perform cell call and perform corresponding program; The described unit that automatically performs is provided with an attribute whether automatically performed, when this attribute is true, after executing corresponding program, flow process token flows directly to next unit, otherwise at the described unit that automatically performs, flow process token will wait for that extraneous driving could down circulate;
Described human task unit is for generating and performing the human task needing operational staff to complete certain action could down to circulate, it realizes logic: when flow process token performs human task unit, described human task cell call task manager produces corresponding human task, and now flow process token is parked in active cell until human task continues after completing down to circulate again.
2. the workflow engine of personalized operation flow according to claim 1, it is characterized in that: be also provided with a time limit evaluation module used with human task unit matching, the time limit is examined accordingly, to examine the execution time of human task for configuring on human task unit.
3. the workflow engine of personalized operation flow according to claim 2, it is characterized in that: described task manager is used for carrying out according to human task unit configuration information the judgement of the establishment of human task, distribution and Flow driving, and combine the examination execution time of time limit module to human task and calculate and examine.
4. the workflow engine of personalized operation flow according to claim 1, it is characterized in that: described regulation engine is for calculating various logic condition, judge that subsequent cell is the need of establishment, the regular expression mode of regulation engine support has: logical expression, script and JAVA class.
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