CN102043669B - Workflow concurrency mode control method and device - Google Patents
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Abstract
The invention provides a workflow concurrency mode control method and a device thereof. The method comprises the steps: creating at least two concurrent son instances of the current parent instance and a counter object corresponding to the current parent instance; and controlling at least two concurrent son instances according to the counter object. The concurrency mode controlling multiple concurrent son instances according to the counter object in the embodiment of the invention can obviously reduce data processing quantity. Meanwhile all the concurrent son instances require acquiring a lock of the counter object when operation is finished, so that serial processing is formed at the moment when all the concurrent son instances issue operation simultaneously and no concurrency conflict is produced.
Description
Technical field
The present invention relates to data processing field, particularly relate to a kind of control method and device of workflow concurrency mode.
Background technology
In a flow instance, may there be a plurality of objects, these objects can be operated at synchronization by different people or machine, will form concurrently, and this pattern is called workflow concurrency mode.Task is a class object in the workflow, it generally be in the actual life something should, task, item or step abstract, in the task node, produce example in flow performing.Flow nodes can be the multitask node, can produce simultaneously a plurality of task instances when carrying out the multitask node, generally these a plurality of task instances can by different personnel operate simultaneously form concurrent.Flow process branch also is the class object in the workflow, it is that the flow process main line is when carrying out concurrent branch node, split into the sub-line of a plurality of flow processs and carry out simultaneously, and these flow process branches can be carried out simultaneously by different personnel or machine, therefore also can form concurrent.Sub-process also is the class object in the workflow, and it can be by other process invocation.In present specification, described sub-process all is synchronous sub-process, and after namely main flow had been transferred sub-process, the end that needs to wait for sub-process could continue to carry out downwards.Many sub-processes node is a type of workflow node, can produce simultaneously a plurality of sub-process examples in the time of execution, and generally these a plurality of sub-processes can be carried out simultaneously by different personnel and machine, therefore can form concurrent.
In the workflow execution pattern, there is a large amount of concurrent scenes.With reference to shown in Figure 1, it is the schematic flow sheet of concurrent scene of a plurality of task instances of a multitask node.With reference to shown in Figure 2, it is the schematic flow sheet of concurrent scene of a plurality of flow process branch of a flow instance.With reference to shown in Figure 3, it is the schematic flow sheet of concurrent scene of a plurality of sub-process examples of sub-process node more than.For workflow engine, whole when complete when concurrent example, can trigger the change of workflow and flow state, and in actual applications, when each example is complete, just need judge whether all fraternal examples are complete.
Some are arranged for the concurrent control method of existing workflow, the method for for example inquiring about fraternal object in the prior art.Whether the flow process of the method such as synoptic diagram can at first need to finish current example with reference to shown in Figure 4, and then inquire about all fraternal examples and finish, if all finish, then trigger flow process and circulate downwards; If not yet all finish, then finish this query manipulation.
But should inquire about the method for fraternal object, because when each example finishes, all need to inquire about all fraternal examples, take N fraternal example as example, in the situation that all concurrent examples are all finished, the data base querying record strip that relates to is the N*N bar, and total inquiry amount is with square exponential increase of N, so the data query amount is larger when carrying out, and then can cause the efficient of control workflow concurrency mode in the prior art lower.Further, when each concurrent example is carried out simultaneously, they can be inquired about all fraternal examples simultaneously concurrently, its Query Result is probably distorted by other examples of carrying out, cause the phenomenon of " dirty reading " to cause that the mistake of workflow engine carries out, therefore also there is concurrency conflict in existing control method.
Therefore, need at present the urgent technical matters that solves of those skilled in the art to be exactly: how a kind of control method of workflow concurrency mode can be proposed, lower and might cause the problem that the workflow engine mistake is carried out in order to solve the data query amount causes more greatly in the prior art control efficiency.
Summary of the invention
Technical matters to be solved by this invention provides a kind of control method of workflow concurrency mode, lower and might cause the problem that the workflow engine mistake is carried out in order to solve the data query amount causes more greatly in the prior art control efficiency, further, can also avoid the phenomenon of concurrency conflict to exist.
Another object of the present invention is that above-mentioned design is applied to provide a kind of control device of workflow concurrency mode in the concrete applied environment, thereby guarantees realization and the application of the method.
For solving the problems of the technologies described above, the embodiment of the invention provides a kind of control method of workflow concurrency mode, comprising:
Create at least two concurrent sub-instances under current parent's example, and the counter object corresponding with described current parent's example; Wherein, create the counter object corresponding with described current parent's example, specifically comprise: the numbering that generates described counter object; The type of described counter object is set; The type of described counter object comprises: concurrent task, concurrent branch or concurrent sub-process; The object number of described counter object and the initial value of not finishing number all are set to the number of described concurrent sub-instance;
According to described counter object described at least two concurrent sub-instances are controlled; The described counter object of described foundation is controlled described two concurrent sub-instances at least, specifically comprises: when current concurrent sub-instance finishes, lock described counter object in database side; Current thread subtracts an operation to the number execution of not finishing of described counter object; Judge to carry out to subtract whether the operation number of not finishing afterwards is zero, if so, then carry out the next link of described current parent's example, if not, then removed the lock operation of described counter object by current thread.
Preferably, also comprise:
Father's example number of described counter object is initialized as the numbering of described current parent's example;
Creation-time and final updating time that described counter object is set are the current time.
Preferably, also comprise:
If the number of not finishing that described execution subtracts after the operation is zero, then the concluding time with described counter object saves as the current time.
The embodiment of the invention also provides a kind of control device of workflow concurrency mode, comprising:
Creation module is used for creating at least two concurrent sub-instances under current parent's example, and the counter object corresponding with described current parent's example; Described creation module specifically comprises: generate submodule, be used for generating the numbering of described counter object; First arranges submodule, is used for arranging the type of described counter object; The type of described counter object comprises: concurrent task, concurrent branch or concurrent sub-process; Second arranges submodule, is used for the object number of described counter object and the initial value of not finishing number all are set to the number of described concurrent sub-instance;
Control module is used for according to described counter object described at least two concurrent sub-instances being controlled; Described control module specifically comprises: the locking submodule when being used for current concurrent sub-instance end, locks described counter object in database side; Execution subtracts an operation submodule, is used for the number execution of not finishing of described counter object is subtracted an operation; The judgement submodule is used for judging carrying out subtracting whether the operation number of not finishing afterwards is zero; Implementation sub-module, be used for when the result of described judgement submodule when being, carry out the next link of described current parent's example; The release submodule is used for removing the lock operation of described counter object as the result of described judgement submodule when being no.
Preferably, described creation module also comprises:
The initialization submodule is for the numbering that father's example number of described counter object is initialized as described current parent's example;
The 3rd arranges submodule, and the creation-time and the final updating time that are used for arranging described counter object are the current time.
Preferably, also comprise:
Preserving module, is zero if subtract the operation number of not finishing afterwards for described execution, and then the concluding time with described counter object saves as the current time.
Compared with prior art, the present invention has the following advantages:
Because control the burse mode of a plurality of concurrent sub-instances in the embodiment of the invention according to the counter object, data processing amount is significantly diminished.Take N concurrent sub-instance as example, prior art is when concurrent sub-instance finishes, only sub-instance is not finished in inquiry namely needs the inferior inquiry of N*N bar, and the present invention only need to inquire about the N bar, quantity is reduced to N/one, so also can improve the efficient that the burse mode of concurrent sub-instance is controlled, also can not cause the execution of workflow engine mistake.Simultaneously because all concurrent sub-instance end operations all need to obtain the lock to the counter object, so all concurrent sub-instances send in the situation of operation at the same time, can become serial processing herein, not have concurrency conflict.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic flow sheet of concurrent scene of a plurality of task instances of a multitask node;
Fig. 2 is the schematic flow sheet of concurrent scene of a plurality of flow process branch of a flow instance;
Fig. 3 is the schematic flow sheet of concurrent scene of a plurality of sub-process examples of sub-process node more than;
Fig. 4 is the schematic flow sheet of the concurrent control method of existing workflow;
Fig. 5 is the process flow diagram of the control method embodiment of a kind of workflow concurrency mode of the present invention;
Fig. 6 is the schematic flow sheet of step 501 among the inventive method embodiment;
Fig. 7 is counter attribute synoptic diagram;
Fig. 8 is the schematic flow sheet of step 102 among the inventive method embodiment;
Fig. 9 is the structural representation of the control device embodiment of a kind of workflow concurrency mode of the present invention;
Figure 10 is the structural representation of creation module 901 among apparatus of the present invention embodiment;
Figure 11 is the structural representation of control module 902 among apparatus of the present invention embodiment.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
The present invention can be used in numerous general or special purpose calculation element environment or the configuration.For example: personal computer, server computer, handheld device or portable set, plate equipment, multi-processor device, comprise distributed computing environment of above any device or equipment etc.
The present invention can describe in the general context of the computer executable instructions of being carried out by computing machine, for example program module.Usually, program module comprises the routine carrying out particular task or realize particular abstract data type, program, object, assembly, data structure etc.Also can in distributed computing environment, put into practice the present invention, in these distributed computing environment, be executed the task by the teleprocessing equipment that is connected by communication network.In distributed computing environment, program module can be arranged in the local and remote computer-readable storage medium that comprises memory device.
With reference to figure 5, show the process flow diagram of the control method embodiment of a kind of workflow concurrency mode of the present invention, can may further comprise the steps:
Step 501: create at least two concurrent sub-instances under current parent's example, and the counter object corresponding with described current parent's example.
The embodiment of the invention unlike the prior art be after at least two concurrent sub-instances under having created father's example, also to create the counter object of a unique correspondence for current parent's example.The usage counter object is preserved the quantity performed of described at least two concurrent sub-instances, judges on this basis whether flow process turns to the next link in this father's example.
A counter object that creates in the embodiment of the invention can call (create () method), when each concurrent sub-instance finishes, follow-uply can implement to subtract an operation (minus () method) to the counter object, judge whether the number of not finishing that subtracts after is 0, deciding next step according to return results (whether being 0) is the next link that continues the execution concurrence sub-instance or carry out this father's example again.Wherein, described concurrent sub-instance may be task, branch or sub-process.
With reference to shown in Figure 6, for creating the schematic flow sheet of counter object in the step 501, specifically can comprise:
Step 601: the numbering that generates described counter object.
The numbering of described counter object is a sign of counter object, can adopt database when generating is the counter object number from the function that increases, for example, if when generating first counter object, be numbered 1, will be numbered 2 when generating so second counter object, by that analogy, realization is to the numbering systematic function of counter object.
Step 602: the type that described counter object is set; The type of described counter object comprises: concurrent task, concurrent branch or concurrent sub-process.
The type of described counter object is the type of setting for concurrent task instances, concurrent flow process branch's example or concurrent sub-process example respectively, the type difference of counter object does not affect among the present invention for the control procedure of concurrent sub-instance, and the type of counter object just is used for representing the application scenarios of this counter object.The type of described counter object can be located together with the numbering of father's example father's example of a concurrent sub-instance.
Step 603: the number that the object number of described counter object and the initial value of not finishing number all is set to described concurrent sub-instance.
The object number of described counter object is the total number of initialization of all concurrent sub-instances of current parent's example of preservation.The described residue number of not finishing uncompleted concurrent sub-instance in all concurrent sub-instances that number represents to arrange.
Step 604: the numbering that father's example number of described counter object is initialized as described current parent's example.
Namely being father's example number that father's example number of counter object is set to create this counter object in this step, is the numbering of higher level's object of concurrent objects.
Step 605: creation-time and final updating time that described counter object is set are the current time.
In this step, described creation-time is used for the initial life period of this counter object of expression, and the final updating time is the current operation time of counter object record when upgrading each time.
With reference to shown in Figure 7, be counter attribute synoptic diagram.
Step 502: described at least two concurrent sub-instances are controlled according to described counter object.
In this step, need to be according to not finishing the parameter such as number in the counter attribute, the process of coming the burse mode at least two concurrent sub-instances creating under current parent's example to carry out flow process control.
With reference to shown in Figure 8, described step 102 specifically can may further comprise the steps in implementation procedure:
Step 801: when current concurrent sub-instance finishes, lock described counter object in database side.
Wherein, when a concurrent sub-instance is finished, then the thread by this current concurrent sub-instance locks the counter object, its objective is so that the thread of other concurrent sub-instances can not carry out any operation to described counter object, to avoid the phenomenon of concurrency conflict.
Need to prove, should lock it during each concurrent sub-instance operational counter object, and the function of utilizing as much as possible Database Systems to provide realizes the deployment of using to be applicable to the cluster class.
Step 802: current thread subtracts an operation to the number execution of not finishing of described counter object.
By current thread the number of not finishing of described counter object is subtracted one.
Step 803: judge to carry out to subtract whether the operation number of not finishing afterwards is zero, if so, then enter step 804; If not, then enter step 805.
Judge again to subtract and do not finish number whether zero after one that when not finishing number and be zero, all concurrent sub-instances of establishment all are finished before illustrate.And if it is non-vanishing not finish number, all concurrent sub-instances that then create before the explanation all are not finished, and at this moment, also need to forward to next concurrent sub-instance and carry out.
Step 804: next link of carrying out described current parent's example.
Although the concurrent sub-instance of all of current parent's example all is finished, but current parent's example also exists follow-up link to continue operation, it may be that next organizes concurrent task or next organizes concurrent sub-process etc., and therefore, flow process will turn to next link of current parent's example.
Flow process is that a lot of links consist of, for example first link is multitask node (concurrent task), second link is single task node (without concurrent), three link is multiple-limb (concurrent branch), etc., the like, finish the execution that enters next link after the link.
Step 805: the lock operation of being removed described counter object by current thread.
And do not finish number when non-vanishing, and then remove lock operation to described counter object by current thread, purpose is so that the thread of other concurrent sub-instances can operate described counter object.
Need to prove, each concurrent sub-instance has the time of operational counter should lack as far as possible, causes database blockage to avoid long-time lock count device object, therefore, do not finished number when non-vanishing in judgement, need to be removed immediately the lock operation to described counter object.
Step 806: the number of not finishing afterwards is zero if described execution subtracts an operation, and then the concluding time with described counter object saves as the current time.
Further, when not the finishing number and be zero of concurrent sub-instance, need to be saved as the concluding time of counter object the current concluding time, this concluding time is that the number of not finishing of counter becomes for 0 running time.Need to prove, be can carry out after zero although this step can not finish number in judgement, just it is positioned over after the step 805 for convenience.
In embodiments of the present invention, each concurrent sub-instance should have other the least possible shared resources, preventing the generation of deadlock, because the present invention controls the burse mode of a plurality of concurrent sub-instances according to the counter object, data processing amount is significantly diminished simultaneously.Take N concurrent sub-instance as example, prior art is when concurrent sub-instance finishes, only sub-instance is not finished in inquiry namely needs the inferior inquiry of N*N bar, and the present invention only need to inquire about the N bar, quantity is reduced to N/one, so also can improve the efficient that the burse mode of concurrent sub-instance is controlled.Simultaneously because all concurrent sub-instance end operations all need to obtain the lock to the counter object, so all concurrent sub-instances send in the situation of operation at the same time, can become serial processing herein, not have concurrency conflict.And when concurrent sub-instance is finished, only need a record of lock count device object each time.The power that is processed into of the embodiment of the invention is 100% in the ordinary course of things, and the phenomenon of operation failure can not occur.Simultaneously, carry out the locking of object in database side, also can be applied to the clustered deploy(ment) pattern.Therefore, the embodiment of the invention has succinctly, reliable, effectively and the characteristics of function admirable, can be applicable to different application systems and Database Systems.
Need to prove, because the embodiment of the invention need to be applied to the scene of clustered deploy(ment), so need to be placed on database side for the locking of counter object, adopt the function of Database lock given data to realize.
Therefore, the embodiment of the invention can also comprise step in actual applications:
Step 503: the described counter object of concluding time of having deleted mark.
After the embodiment of the invention has realized control to the burse mode of concurrent sub-instance, can also be to mark the counter object of concluding time clear up.Because the counter object is deleted the counter object that finishes in case after finishing, with regard to the meaning that does not have to exist, but it also can take database space with the form of batch processing, more can save the storage space of database.
With reference to figure 9, show the structural representation of the control device embodiment of a kind of workflow concurrency mode of the present invention, present embodiment can may further comprise the steps:
Creation module 901 is used for creating at least two concurrent sub-instances under current parent's example, and the counter object corresponding with described current parent's example.
With reference to shown in Figure 10, be the structural representation of described creation module 901, specifically can comprise:
Generate submodule 1001, be used for generating the numbering of described counter object;
First arranges submodule 1002, is used for arranging the type of described counter object; The type of described counter object comprises: concurrent task, concurrent branch or concurrent sub-process.
Second arranges submodule 1003, is used for the object number of described counter object and the initial value of not finishing number all are set to the number of described concurrent sub-instance.
Initialization submodule 1004 is for the numbering that father's example number of described counter object is initialized as described current parent's example.
The 3rd arranges submodule 1005, and the creation-time and the final updating time that are used for arranging described counter object are the current time.
Control module 902 is used for according to described counter object described at least two concurrent sub-instances being controlled.
With reference to shown in Figure 11, be the structural representation of control module 902, specifically can comprise:
Locking submodule 1101 when being used for current concurrent sub-instance end, locks described counter object in database side.
Execution subtracts an operation submodule 1102, is used for the number execution of not finishing of described counter object is subtracted an operation.
Simultaneously, the embodiment of the invention can also comprise:
Preserving module, is zero if subtract the operation number of not finishing afterwards for described execution, and then the concluding time with described counter object saves as the current time.
Need to prove, for aforesaid each embodiment of the method, for simple description, so it all is expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not subjected to the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in the instructions all belongs to preferred embodiment, and related action and module might not be that the present invention is necessary.
Need to prove that each embodiment in this instructions all adopts the mode of going forward one by one to describe, what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For device class embodiment because itself and embodiment of the method basic simlarity, so describe fairly simple, relevant part gets final product referring to the part explanation of embodiment of the method.
Need to prove, in this article, relational terms such as the first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint and have the relation of any this reality or sequentially between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby not only comprise those key elements so that comprise process, method, article or the equipment of a series of key elements, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, article or equipment.Do not having in the situation of more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
More than the control method of a kind of workflow concurrency mode provided by the present invention and the control device of workflow concurrency mode are described in detail, used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (6)
1. the control method of a workflow concurrency mode is characterized in that, comprising:
Create at least two concurrent sub-instances under current parent's example, and the counter object corresponding with described current parent's example; Wherein, create the counter object corresponding with described current parent's example, specifically comprise: the numbering that generates described counter object; The type of described counter object is set; The type of described counter object comprises: concurrent task, concurrent branch or concurrent sub-process; The object number of described counter object and the initial value of not finishing number all are set to the number of described concurrent sub-instance;
According to described counter object described at least two concurrent sub-instances are controlled; The described counter object of described foundation is controlled described two concurrent sub-instances at least, specifically comprises: when current concurrent sub-instance finishes, lock described counter object in database side; Current thread subtracts an operation to the number execution of not finishing of described counter object; Judge to carry out to subtract whether the operation number of not finishing afterwards is zero, if so, then carry out the next link of described current parent's example, if not, then removed the lock operation of described counter object by current thread.
2. the method for claim 1 is characterized in that, the counter object that described establishment is corresponding with described current parent's example also comprises:
Father's example number of described counter object is initialized as the numbering of described current parent's example;
Creation-time and final updating time that described counter object is set are the current time.
3. the method for claim 1 is characterized in that, the described counter object of described foundation is controlled described two concurrent sub-instances at least, also comprises:
If the number of not finishing that described execution subtracts after the operation is zero, then the concluding time with described counter object saves as the current time.
4. the control device of a workflow concurrency mode is characterized in that, comprising:
Creation module is used for creating at least two concurrent sub-instances under current parent's example, and the counter object corresponding with described current parent's example; Described creation module specifically comprises: generate submodule, be used for generating the numbering of described counter object; First arranges submodule, is used for arranging the type of described counter object; The type of described counter object comprises: concurrent task, concurrent branch or concurrent sub-process; Second arranges submodule, is used for the object number of described counter object and the initial value of not finishing number all are set to the number of described concurrent sub-instance;
Control module is used for according to described counter object described at least two concurrent sub-instances being controlled; Described control module specifically comprises: the locking submodule when being used for current concurrent sub-instance end, locks described counter object in database side; Execution subtracts an operation submodule, is used for the number execution of not finishing of described counter object is subtracted an operation; The judgement submodule is used for judging carrying out subtracting whether the operation number of not finishing afterwards is zero; Implementation sub-module, be used for when the result of described judgement submodule when being, carry out the next link of described current parent's example; The release submodule is used for removing the lock operation of described counter object as the result of described judgement submodule when being no.
5. device as claimed in claim 4 is characterized in that, described creation module also comprises:
The initialization submodule is for the numbering that father's example number of described counter object is initialized as described current parent's example;
The 3rd arranges submodule, and the creation-time and the final updating time that are used for arranging described counter object are the current time.
6. device as claimed in claim 4 is characterized in that, described control module also comprises:
Preserving module, is zero if subtract the operation number of not finishing afterwards for described execution, and then the concluding time with described counter object saves as the current time.
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| CN103824162A (en) * | 2014-02-28 | 2014-05-28 | 北京航空航天大学 | Reliability and performance integrated flexible workflow implementing method based on instruction chain |
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| CN107341054B (en) * | 2017-06-29 | 2020-06-16 | 广州市百果园信息技术有限公司 | Task execution method and device and computer readable storage medium |
| CN110597607B (en) * | 2019-08-26 | 2022-05-17 | 东软集团股份有限公司 | Execution method and device of asynchronous application program, storage medium and electronic equipment |
| CN110968408B (en) * | 2019-11-13 | 2023-04-07 | 泰康保险集团股份有限公司 | Execution stream removing method and device, electronic equipment and storage medium |
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