CN102291464B - System and method for dynamically generating Web Service by business flow in BPM (Business Process Management) - Google Patents
System and method for dynamically generating Web Service by business flow in BPM (Business Process Management) Download PDFInfo
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Abstract
The invention relates to a system for dynamically generating Web Service by business flow in an enterprise BPM (Business Process Management) system. The system comprises a business flow service interface defining module, a dynamic Web Service member assembling module, a Web Service dynamic generating module, a disaster recovering module, a dynamic service management module, a security control module and a business flow service version control module. The invention also relates to a method for dynamically generating Web Service by business flow of the system. By using the system and method provided by the invention, the business flow has natural integration characteristic; the Web Service is published while the process is scheduled; unique service interface standard is obtained and the encoding is not needed. Meanwhile, portability and expandability of the system are enhanced; the system and method provided by the invention can rapidly adapt to business requirement variation and technical variation and have the advantages of simple development period, explicit interface, convenience in configuration, higher efficiency in operation period, stable and reliable system performance and wider application range; and the establishment of a highly modular and highly integrated software system can be supported.
Description
Technical field
The present invention relates to computer application field, be particularly related to the Computer Applied Technology field of the architecture (BPM) about BPM, specifically refer in a kind of enterprise B PM system and realize that operation flow dynamically generates the system and method for Web Service.
Background technology
In the enterprise-level application development field, along with the continuous expansion of application scale, integrated between each system and become alternately more and more frequent, realize a specific function, need to communicate with a plurality of systems, completes by the cooperation between each system.The framework similar " vertical shaft " of the software project of main flow, have database in this " vertical shaft " at present, intermediate layer, client performance layer etc.The data of each application system adhere to separately in different vertical shafts, when we Informatization Development to a certain extent, developed and with the system of on-line running, need to integrate or while realizing data sharing, we have to by " vertical shaft " " Durchgangshohle " visit data.In case variation has occurred a data object, just will become " unknowable " and " uncontrollable " the impact of other system.
BPM (Business Process Management, BPM) software systems are a kind of effective means that solve existing software system structure drawback.Operation flow is by combing and layout business activity.The BPM software systems are by changing into centered by operation flow centered by function and data before, by the operation of operation flow, drive the development of business, by operation flow, integrate the service interaction between different business department, promote the efficiency of whole enterprise.
Operation flow is in core status in the BPM software systems.Tradition is implemented BPM method the inside and is comprised the steps such as Business Process Modeling, Business Process Analysis, business Process Design, operation flow execution, business process monitoring, operation flow optimization.But along with the development of scope of the enterprise and the transformation of own service pattern, require the variation of response service fast of BPM system, require the BPM system to have integration capability and quick changing capability.Concrete is exactly from two dimensions expansions, the firstth, the operation flow requirement can be integrated with mode and other operation systems of Web Service, for example can with inventory management system, the IBM Lotus system integration of SAP; Second is exactly dynamic optimization and the adjustment capability of operation flow, business events flow path constantly can face variation, such as the sensitiveness of financial circles to indexs such as interest rate, required reserves, the business analyst requires within the shortest time to operation flow adjustment to meet the variation of business.
For the first situation, usually the method adopted is that the BPM system is carried out to secondary development, operation flow in the BPM system is encapsulated, introduce third-party Web Service assembly, such as an embedded Open Framework such as Axis2, by encapsulation business flow operations interface, a self-defined group interface object, be issued as Web Service by Axis2.But the difference due to integration standard, the even difference of different business system integration pattern, different B PM system inconsistent phenomenon may occur serving after implementing, and for example the data of service interface are inconsistent, access security control is inconsistent etc., causes the disabled phenomenon of service.
For the second situation, BPM lives through Workflow in evolution, Human Task, Business Form etc., by in the Business Process Analysis stage definitions, being human task, by the mode of manpower, carry out the operation of service control flow process to some indexs that need to adjust; Also have the mode that embeds dynamic step language by operation flow template the inside, the ability of carrying out script by program improves the flow process flexibility.But each mode has limitation, for example the mode by manpower is very high to personnel's requirement, very complicated in the operation system running, often face wrong rollback, reassign etc., increased the complexity of system, and adopt the mode of dynamic script language can't understand the business personnel, and also be difficult to debugging etc. for the software developer.From the angle of component software, this scheme is very high to the degree of coupling of the program code of operation flow.
Along with the continuous expansion of system, the operation flow in the BPM system is more and more, and integrated also more and more between operation flow.If select, personnel are required to solution very high and that the software module coupling is high, this is for the business analyst or the software development tester will be a disaster.At BPM, day by day need to serve integrated today, how in the BPM system, to realize that operation flow dynamically generates Web Service and becomes very urgent.
Summary of the invention
The objective of the invention is to have overcome above-mentioned shortcoming of the prior art, provide a kind of and can in the BPM system, automatically according to Service interface definition, generate Web Service by system after the layout operation flow, and have disaster recovery, security control, simple clear and definite, need not encode, service interface is consistent, systematic function is reliable and stable, the scope of application realizes that comparatively widely operation flow dynamically generates the system and method for Web Service.
In order to realize above-mentioned purpose, in enterprise B PM system of the present invention, realize that the system that operation flow dynamically generates Web Service comprises:
Operation flow Service interface definition module, in order to define the Web Service interface message of operation flow;
The load module of Dynamic Web Service member, be connected with described operation flow Service interface definition module, in order to the Web Service interface message mounting structure according to operation flow;
The dynamic generation module of Web Service, be connected with the load module of described Dynamic Web Service member, in order to load described member, generates Web Service service, and provide Web Service service access to process;
The dynamic Service administration module, be connected with the dynamic generation module of described Web Service, in order to Web Service is managed to operation;
The disaster recovery module, with the load module of described Dynamic Web Service member, in order to when system is restarted, automatically to generate Web Service according to the operation flow in system;
Safety control module, be connected with the dynamic generation module of described Web Service, in order to service provides safety guarantee to Web Service;
Operation flow service release control module, be connected with the dynamic generation module of Web Service with the load module of described Dynamic Web Service member respectively, and the dynamic Service of many versions is provided in order to the operation flow service of many versions of existing in described system.
In this enterprise B PM system, realize that operation flow dynamically generates in the system of Web Service, described operation flow Service interface definition module comprises:
Service interface metadata schema resolver, resolve in order to the data type that the BPM system is supported;
Operation flow Service interface definition configurator, be connected with described service interface metadata schema resolver, defines with the XML language in order to service name and service parameter to operation flow definition service interface;
The Service interface definition analyzer, be connected with described operation flow Service interface definition configurator, and connect the load module of described Dynamic Web Service member, in order to Service interface definition is converted to the service object.
In this enterprise B PM system, realize that operation flow dynamically generates in the system of Web Service, described data type is one or more in fundamental type, complicated type and XSD type.
In this enterprise B PM system, realize that operation flow dynamically generates in the system of Web Service, the load module of described Dynamic Web Service member comprises:
The service interface maker, connect described Service interface definition analyzer, produces the virtual java interface of service according to described Service interface definition;
The serviced component maker, connect described service interface maker, according to described Service interface definition, creates the services component bag that comprises service and data type resource;
The serviced component scheduler, connect described serviced component maker, and connect the dynamic generation module of described Web Service, according to described Service interface definition, deployment, issue, the destruction of serviced component dispatched.
In this enterprise B PM system, realize that operation flow dynamically generates in the system of Web Service, the dynamic generation module of described Web Service comprises:
The services component loader, connect described serviced component scheduler, in order to load described services component bag;
Web Service waiter grows up to be a useful person, and connects described services component loader, generates Web Service service by described virtual java interface;
Web Service serves access device, connecting described Web Service waiter grows up to be a useful person, and connect described dynamic Service administration module, disaster recovery module, safety control module and operation flow service release control module, in order to being provided, Web Service calls the Business Processing of affairs.
The present invention also provides a kind of system of utilizing to realize in enterprise B PM system realizing that operation flow dynamically generates the method for Web Service, and the method comprises the following steps:
(1) described operation flow Service interface definition module is carried out the operation of operation flow layout procedure definition service interface information;
(2) load module of described Dynamic Web Service member and described operation flow service release control module are carried out dynamically generation Web Service operation of operation flow heat deployment;
(3) described disaster recovery module is carried out the system failure recovery operation;
(4) described safety control module carries out operation flow service safe interception operation;
(5) the dynamic generation module of described Web Service carries out operation flow service access operation;
(6) described dynamic Service administration module carries out the dynamic Service bookkeeping.
In this enterprise B PM system, realize that operation flow dynamically generates in the method for Web Service, described operation flow Service interface definition module comprises: service interface metadata schema resolver, the operation flow Service interface definition configurator be connected with described service interface metadata schema resolver and the Service interface definition analyzer be connected with described operation flow Service interface definition configurator, described operation flow Service interface definition module is carried out the operation of operation flow layout procedure definition service interface information, specifically comprises the following steps:
(11) data type of described service interface metadata schema resolver loading system support, described data type comprises simple data type and complex data type;
(12) described operation flow Service interface definition configurator layout flow process configuration service interface;
(13) described Service interface definition analyzer resolves to the service object by the service definition in operation flow.
In this enterprise B PM system, realize that operation flow dynamically generates in the method for Web Service, described complex data type is one or more in Java Bean, List, Set and Map type.
In this enterprise B PM system, realize that operation flow dynamically generates in the method for Web Service, described Service interface definition is to comprise the XML fragment that the interface definition structure is described XSD Schema, Service interface definition comprises service interface title and service interface parameter list, and described service interface parameter list comprises that importing parameter into closes return value.
In this enterprise B PM system, realize that operation flow dynamically generates in the method for Web Service, described Service interface definition analyzer resolves to the service object by the service definition in operation flow, specifically comprises the following steps:
(131) described Service interface definition analyzer is injected in service interface metadata schema resolver in BPM engine start process;
When (132) flow process is disposed at the Web interface, service interface metadata schema resolver calls the Service interface definition analyzer Service interface definition XML fragment is resolved to and comprises service name, the Java Bean object of service parameter list, and this Java Bean object of buffer memory.
In this enterprise B PM system, realize that operation flow dynamically generates in the method for Web Service, the load module of described Dynamic Web Service member comprises: service interface maker, the serviced component maker that connects described service interface maker and the serviced component scheduler that connects described serviced component maker, the load module of described Dynamic Web Service member and operation flow service release control module are carried out operation flow heat and are disposed dynamically generation Web Service operation, specifically comprise the following steps:
(21) described service interface maker triggers the service object is converted to virtual Java interface according to the operation flow Dynamical Deployment;
(22) corresponding virtual Java interface, the dtd——data type definition XSD Schema information of described serviced component maker loading service, and go out this serviced component file according to template establishment;
(23) described serviced component scheduler is dispatched serviced component, and described scheduling comprises serviced component deployment, issue and destroys;
(24) described operation flow service release control module is switched the serviced component version, and the released version serviced component is served by default.
In this enterprise B PM system, realize that operation flow dynamically generates in the method for Web Service, described serviced component comprises service assembling file, relies on resource XSD file and complex data type Acegis file.
In this enterprise B PM system, realize that operation flow dynamically generates in the method for Web Service, virtual Java interface, the dtd——data type definition XSD Schema information that described serviced component maker loading service is corresponding also goes out this serviced component file according to template establishment, specifically comprises the following steps:
(221) described serviced component maker calls the virtual Java interface of service interface maker establishment as service interface;
(222) described serviced component maker, according to the reflectance data type of service interface, judges whether to rely on relevant XSD file, if, enter step (223), if not, enter step (224);
(223) the serviced component maker is put into serviced component from the BPM system, loading this XSD file, and enters step (224);
(224) the serviced component maker, according to the reflectance data type of service interface, judges whether to comprise List, Set or Map complex data type, if, enter step (225), if not, enter step (226);
(225) the serviced component maker creates the Aegis file of describing complicated type and puts into serviced component, and enters step (226);
(226) the serviced component maker uses template asset creation serviced component.
In this enterprise B PM system, realize that operation flow dynamically generates in the method for Web Service, described disaster recovery module is carried out the system failure recovery operation, specifically comprises the following steps:
(31) described disaster recovery module checks the serviced component state as starting Listener when system runs into the disaster fault and need to restart, and determines whether to start and recovers;
(32) after described disaster recovery module determines that startup recovers, call described Dynamic Web Service member load module device failed services in system is regenerated.
In this enterprise B PM system, realize that operation flow dynamically generates in the method for Web Service, described safety control module carries out operation flow service safe interception operation, is specially:
Described safety control module is tackled service request according to the user name and password of system configuration, and forbids that unauthorized user calls.
In this enterprise B PM system, realize that operation flow dynamically generates in the method for Web Service, the dynamic generation module of described Web Service carries out operation flow service access operation, is specially:
The dynamic generation module of described Web Service is tackled service request according to the user name and password of system configuration, and forbids that unauthorized user calls.
In this enterprise B PM system, realize that operation flow dynamically generates in the method for Web Service, described dynamic Service administration module carries out the dynamic Service bookkeeping, is specially:
Described dynamic Service administration module manages serviced components all in system.
In this enterprise B PM system, realize that operation flow dynamically generates in the method for Web Service, described management comprises inquiry service WSDL and statistics service data.
Adopted in the enterprise B PM system of this invention and realized that operation flow dynamically generates the system of Web Service, it comprises operation flow Service interface definition module, connect the Dynamic Web Service member load module of this operation flow Service interface definition module, the dynamic generation module of Web Service and the disaster recovery module that connect the load module of this Dynamic Web Service member, the dynamic Service administration module and the safety control module that connect the dynamic generation module of this Web Service, and the operation flow service release control module be connected with the dynamic generation module of Web Service with the load module of described Dynamic Web Service member respectively.Utilize the operation flow of this system dynamically to generate the method for Web Service, its operation flow has natural Integrated Trait, in the layout flow process, issues out Web Service, and the service interface standard is unified, without coding.System portability and extensibility have been strengthened simultaneously, variation and the technique variation that can adapt to fast business demand, can support the software systems of setting up high modularization and highly integrating again, development period, is simple, interface is clear and definite, and configuration is convenient, and runtime efficiency is higher, systematic function is reliable and stable, the scope of application is comparatively extensive, for the integrated development of BPM system lays a solid foundation.
The accompanying drawing explanation
Fig. 1 realizes in enterprise B PM system of the present invention that operation flow dynamically generates the structural representation of the system of Web Service.
Fig. 2 realizes in enterprise B PM system of the present invention that operation flow dynamically generates the class figure of the dynamic generation module of service in the system of Web Service.
Fig. 3 realizes in enterprise B PM system of the present invention that operation flow dynamically generates the class figure of the serviced component maker in the system of Web Service.
Fig. 4 realizes in enterprise B PM system of the present invention that operation flow dynamically generates the class figure of the service access module in the system of Web Service.
Fig. 5 realizes in enterprise B PM system of the present invention that operation flow dynamically generates the class figure of the disaster recovery module in the system of Web Service.
Fig. 6 realizes in enterprise B PM system of the present invention that operation flow dynamically generates the sequential chart of the method for Web Service.
Fig. 7 utilizes method of the present invention in enterprise B PM system, to realize that operation flow dynamically generates the sequential chart that Web Service calls.
Embodiment
In order more clearly to understand technology contents of the present invention, describe in detail especially exemplified by following examples.
Refer to shown in Figure 1, in enterprise B PM system of the present invention, realizing that operation flow dynamically generates the structural representation of the system of Web Service.
In one embodiment, in this enterprise B PM system, realize that the system that operation flow dynamically generates Web Service comprises:
Operation flow Service interface definition module, in order to define the Web Service interface message of operation flow;
The load module of Dynamic Web Service member, be connected with described operation flow Service interface definition module, in order to the Web Service interface message mounting structure according to operation flow;
The dynamic generation module of Web Service, be connected with the load module of described Dynamic Web Service member, in order to load described member, generates Web Service service, and provide Web Service service access to process;
The dynamic Service administration module, be connected with the dynamic generation module of described Web Service, in order to Web Service is managed to operation;
The disaster recovery module, with the load module of described Dynamic Web Service member, in order to when system is restarted, automatically to generate Web Service according to the operation flow in system;
Safety control module, be connected with the dynamic generation module of described Web Service, in order to service provides safety guarantee to Web Service;
Operation flow service release control module, be connected with the dynamic generation module of Web Service with the load module of described Dynamic Web Service member respectively, and the dynamic Service of many versions is provided in order to the operation flow service of many versions of existing in described system.
The method of utilizing the system of this kind execution mode to realize that operation flow dynamically generates Web Service comprises the following steps:
(1) described operation flow Service interface definition module is carried out the operation of operation flow layout procedure definition service interface information;
(2) load module of described Dynamic Web Service member and described operation flow service release control module are carried out dynamically generation Web Service operation of operation flow heat deployment;
(3) described disaster recovery module is carried out the system failure recovery operation;
(4) described safety control module carries out operation flow service safe interception operation;
(5) the dynamic generation module of described Web Service carries out operation flow service access operation;
(6) described dynamic Service administration module carries out the dynamic Service bookkeeping.
In a kind of more preferably execution mode, described operation flow Service interface definition module comprises:
Service interface metadata schema resolver, resolve in order to the data type that the BPM system is supported;
Operation flow Service interface definition configurator, be connected with described service interface metadata schema resolver, defines with the XML language in order to service name and service parameter to operation flow definition service interface;
The Service interface definition analyzer, be connected with described operation flow Service interface definition configurator, and connect the load module of described Dynamic Web Service member, in order to Service interface definition is converted to the service object.
Wherein, described data type is one or more in fundamental type, complicated type and XSD type.
Utilize the system of this kind execution mode to realize that operation flow dynamically generates in the method for Web Service, described operation flow Service interface definition module is carried out the operation of operation flow layout procedure definition service interface information, specifically comprises the following steps:
(11) data type of described service interface metadata schema resolver loading system support, described data type comprises simple data type and complex data type;
(12) described operation flow Service interface definition configurator layout flow process configuration service interface;
(13) described Service interface definition analyzer resolves to the service object by the service definition in operation flow.
Wherein, described complex data type is one or more in Java Bean, List, Set and Map type.
In a kind of further preferred embodiment, described Service interface definition is to comprise the XML fragment that the interface definition structure is described XSDSchema, Service interface definition comprises service interface title and service interface parameter list, and described service interface parameter list comprises that importing parameter into closes return value.
In the system of utilizing this execution mode realized that operation flow dynamically generates the method for Web Service, described Service interface definition analyzer resolved to the service object by the service definition in operation flow, specifically comprises the following steps:
(131) described Service interface definition analyzer is injected in service interface metadata schema resolver in BPM engine start process;
When (132) flow process is disposed at the Web interface, service interface metadata schema resolver calls the Service interface definition analyzer Service interface definition XML fragment is resolved to and comprises service name, the Java Bean object of service parameter list, and this Java Bean object of buffer memory.
In another preferred embodiment, the load module of described Dynamic Web Service member comprises:
The service interface maker, connect described Service interface definition analyzer, produces the virtual java interface of service according to described Service interface definition;
The serviced component maker, connect described service interface maker, according to described Service interface definition, creates the services component bag that comprises service and data type resource;
The serviced component scheduler, connect described serviced component maker, and connect the dynamic generation module of described Web Service, according to described Service interface definition, deployment, issue, the destruction of serviced component dispatched.
In the system of utilizing this execution mode realizes that operation flow dynamically generates the method for Web Service, the load module of described Dynamic Web Service member and operation flow service release control module are carried out operation flow heat and are disposed dynamically generation WebService operation, specifically comprise the following steps:
(21) described service interface maker triggers the service object is converted to virtual Java interface according to the operation flow Dynamical Deployment;
(22) corresponding virtual Java interface, the dtd——data type definition XSD Schema information of described serviced component maker loading service, and go out this serviced component file according to template establishment;
(23) described serviced component scheduler is dispatched serviced component, and described scheduling comprises serviced component deployment, issue and destroys;
(24) described operation flow service release control module is switched the serviced component version, and the released version serviced component is served by default.
In further preferred embodiment, described serviced component comprises service assembling file, relies on resource XSD file and complex data type Acegis file.Virtual Java interface, the dtd——data type definition XSD Schema information that described serviced component maker loading service is corresponding also goes out this serviced component file according to template establishment, specifically comprises the following steps:
(221) described serviced component maker calls the virtual Java interface of service interface maker establishment as service interface;
(222) described serviced component maker, according to the reflectance data type of service interface, judges whether to rely on relevant XSD file, if, enter step (223), if not, enter step (224);
(223) the serviced component maker is put into serviced component from the BPM system, loading this XSD file, and enters step (224);
(224) the serviced component maker, according to the reflectance data type of service interface, judges whether to comprise List, Set or Map complex data type, if, enter step (225), if not, enter step (226);
(225) the serviced component maker creates the Aegis file of describing complicated type and puts into serviced component, and enters step (226);
(226) the serviced component maker uses template asset creation serviced component.
More preferably in execution mode, the dynamic generation module of described Web Service comprises at another kind:
The services component loader, connect described serviced component scheduler, in order to load described services component bag;
Web Service waiter grows up to be a useful person, and connects described services component loader, generates Web Service service by described virtual java interface;
Web Service serves access device, connecting described Web Service waiter grows up to be a useful person, and connect described dynamic Service administration module, disaster recovery module, safety control module and operation flow service release control module, in order to being provided, Web Service calls the Business Processing of affairs.
In a kind of preferred execution mode, in described enterprise B PM system, realize that operation flow dynamically generates the method for Web Service, specifically comprises the following steps:
(31) described disaster recovery module checks the serviced component state as starting Listener when system runs into the disaster fault and need to restart, and determines whether to start and recovers;
(32) after described disaster recovery module determines that startup recovers, call described Dynamic Web Service member load module device failed services in system is regenerated.
Described safety control module carries out operation flow service safe interception operation, and be specially: described safety control module is tackled service request according to the user name and password of system configuration, and forbids that unauthorized user calls.
The dynamic generation module of described Web Service carries out operation flow service access operation, and be specially: the dynamic generation module of described WebService is tackled service request according to the user name and password of system configuration, and forbids that unauthorized user calls.
Described dynamic Service administration module carries out the dynamic Service bookkeeping, is specially: described dynamic Service administration module manages serviced components all in system.Described management comprises inquiry service WSDL and statistics service data.
In practical application of the present invention, as shown in Figures 2 to 7, in this enterprise B PM system, realize that operation flow dynamically generates in the system and method for Web Service, described system configuration comprises:
(1) operation flow Service interface definition module, the service interface of definition operation flow, comprising:
(a) metadata schema resolver, be responsible for the data type that maintenance service flow process Dynamic Web Service supports, comprises JavaBean object and the user-defined type of XSD etc.;
(b) operation flow service definition interface configuration, by the service interface descriptor of interface definition configuration flow, as service name, service parameter etc.;
(c) Service interface definition analyzer, the ability that provides service interface to resolve, be converted to the Java object that service is relevant;
(2) serve dynamic generation module, be connected with described operation flow Service interface definition module, when flow process is disposed, dynamically generate Web Service, comprising:
(a) waiter grows up to be a useful person, and by the service definition that structuring defines, the waiter grows up to be a useful person and can simulate the Java interface;
(b) serviced component maker, be responsible for each serviced component and generate serviced component, and the resource file relied on;
(c) issuing process after serviced component scheduler, dispatch service assembly generate, comprise operations such as evicting original version, renewal buffer memory from;
(d) service release controller, the special version property of operation flow makes flow services need Version Control, and the Version Control device is safeguarded the service release of current flow process.
Fig. 2 realizes in enterprise B PM system of the present invention that operation flow dynamically generates the class figure of the dynamic generation module of service in the system of Web Service, comprising:
ProcessServiceModuleActivator: the realization of interface ModuleActivator, by registered expansion type in the example acquisition system of ExtensionPointRegistry, add the realization of extension point;
ProcessDirectProcesser: the realization of interface StAXArtifactProcessor, while reading the new component defined in the composite file, readjustment read () method;
ModelFactoryExtensionPoint: be used for obtaining registered AssemblyFactory and JavaInterfaceFactory in system;
AssemblyFactory: be used for creating new service;
JavaInterfaceFactory: be used for creating new java interface;
IProcessServiceImplementation: the realization of flow services, the information on services of encapsulation process-based;
ProcessServiceProviderFactory: the realization of interface ImplementationProviderFactory, the extension point of information while adding operation, the logic supplier's of flow services factory, for instantiation logic supplier;
ProcessServiceProvider: the logic supplier of flow services, be responsible for creating concrete Invoker;
ProcessDirectInvoker: the realization of interface invoker, the flow services actuator, can adjust back invoke () method while calling the Web Service of issue.
Fig. 3 realizes in enterprise B PM system of the present invention that operation flow dynamically generates the class figure of the serviced component maker in the system of Web Service, comprising:
IModelChangeListener: resource change monitor interface;
XSDResourceChangedListener:XSD/Wsdl resource change monitor;
WorkflowChangeListener: flow process change monitor;
DefinitionCacheService: flow definition buffer memory service;
IMessageStartEventInquire:MessageStartEvent querying node interface
ResourceChangedComponentManager: member package manager;
ResourceChangedMissionFactory: resource change task factory;
ResourceChangedMission: the member bag of resource change generates task;
XSDWSDLResourceChangedMission:XSD/Wsdl resource change member bag is new task more;
MseWFChangeMission:MessageStartEvent flow process change member bag is new task more.
(3) disaster recovery module, automatically according to failure condition, generate Web Service in the BPM system when system runs into fault and recovers flow services after restarting, comprising:
(a) service recovery processor, failure judgement situation be in the new operation flow service of disaster recovery process dynamic creation,
Thereby the system that realizes is recovered automatically;
Fig. 5 realizes in enterprise B PM system of the present invention that operation flow dynamically generates the class figure of the disaster recovery module in the system of Web Service, comprising:
IComponentLoad: member bag loading interface;
ComponentLoadTimer: the member bag loads timer;
ComponentLoadTimerTask: the member bag loads timed task.
(4) safety control module, call when above-mentioned serviced component maker creates serviced component, configuration increases fail safe to serviced component according to system safety, comprising:
(a) safety governor, to the security control of serviced component, support the WS-Security agreement;
(5) dynamic Service access module, when the service call person calls the operation flow service, call Web Service the scheduling that is converted to flow engine, comprising:
(a) dynamic Service transducer, mapping Web Service calls the scheduling operation into flow engine;
Fig. 4 realizes in enterprise B PM system of the present invention that operation flow dynamically generates the class figure of the service access module in the system of Web Service, comprising:
Invoker:Web Service serves access interface;
The DynamicWebServiceInvoker:Invoker Interface realization, be used for processing the access of the Web Service service of dynamic generation;
Message: the parameter of importing into while calling Web Service service;
IMessageStartEventProcessManager:MessageStartEvent workflow management interface.
(6) dynamic Service administration module, provide the management function to Dynamic Web Service in system, comprises service-seeking, service monitoring etc.
Based on above-mentioned system configuration, can find out, the present invention is a kind of extension of service concept and abstract in the Design and implementation process, the operation flow that comprises the business implication is taken out to the concept of service, this service can map directly to the WebService of software field, based on this thinking, accomplish software modularity, and with the BPM system decoupling, the technology that the present invention describes can adapt to and other field fully, as algorithm, expert system, DSS etc.
Core design of the present invention is to provide a kind of framework of dynamic generation service, and framework is responsible for monitoring service and is generated event, carries out service creation, maintenance service assembly etc., and realizes that based on this framework the dynamic Service of operation flow in the BPM system generates.Of the present inventionly realize that principle is as follows:
In the BPM system, be to describe process of service execution with graphical language, final formation physical structure is the operation flow of XML document, wherein comprise the concepts such as flow process, activity, attribute definition, event definition, in the field of businessly be divided into again a plurality of standard criterions, as XPDL, BPEL, BPMN etc.The ordinary business practice flow process is the mode start flow by client program calls API, the operation flow that flow engine start to be disposed is in conjunction with all kinds of resources etc., need in the process of implementation flow engine to carry out according to dispatching algorithm, different links at process flow operation, for example Human Task needs artificial the participation, and Service Task is by calling the mode executed activity of local Java method or Web Service.
From the course of work of above operation flow, can take out the following concept about operation flow:
1. flow process interface: the flow process access is the entrance of BPM system, and namely one group of API that can call, comprise the forms such as JavaAPI, WebService, Restful Web.
2. flow process: flow process is the elementary cell that the BPM system is carried out, and the flow engine in the BPM system is according to the migratory route of the branching polymerization mode computation flow process of flow definition.
3. pel: pel is the performance element of minimum particle size in flow process, and flow engine carries out the execution of different business semanteme according to the configuration on pel;
In this method, Service interface definition is exactly the expansion to above service interface concept, by operation flow layout process, increasing Service interface definition, meets the specification requirement of Web Service, provides factual data structure source for dynamically generating Web Service.
Having on basis, factual data structure source, dynamically generate Web Service and need in flow engine, add event sniffer, when flow process changes, after such as flow process issue, flow process, cancelling the events generations such as issue, flow process deletion, event sniffer is converted to concrete service-creation, service destruction operation to event automatically.Use simultaneously monitoring mechanism can accomplish to the full extent the software component infrastructure decoupling zero, thus can this method abstract be a framework that dynamically generates Web Service.In addition, by action listener mechanism, can introduce asynchronous service and dynamically generate, thus the overall performance of raising BPM system.
The Dynamic Web Service of this method take serviced component to issue Web Service as physical medium, and serviced component is one and comprises service description file, Service Source file such as Aegis file, the physical storage structure of service safe configuration file.And do not rely on concrete service distribution technology (the service distribution technology is not the content that this method emphasis is set forth), as Aixs2, Apache CXF, Spring WS etc.
Should be based in above-mentioned system configuration BPM system, realizing that operation flow dynamically generates the method for Web Service, described method comprises that dynamically generation Web Service operation of the operation of operation flow layout procedure definition service interface information, operation flow deployment, the operation of system failure service recovery, operation flow service safe are tackled operation, operation flow is served access operation, dynamic Service bookkeeping.
Described operation flow layout procedure definition service interface information operation comprises the following steps:
(11) described service definition metadata of interface resolver loads the data type of dynamic flow service support in the BPM system, comprise basic simple data type and complicated type, complicated type comprises Java Bean, List, Set, Map and self-defining XSD data type, loads complicated XSD type and comprises the following steps;
(a) import target XSD, select local XSD defined file or network URL address is provided;
(b) judge in the NameSpace that lead-in type is corresponding and whether had this XSD type, if exist, importing process failure, in order to prevent the conflict of XSD type of the same name.
(c) metadata parser is set up metadatabase to the XSD type that success imports.
(12) described operation flow Service interface definition configurator configuration service interface in the layout flow process, comprise the steps;
(a) layout operation flow, setting procedure is used message initiated event (the Message StartEvent of BPMN specification description), determines that namely this operation flow starts by the mode of message;
(b) definition service interface title in message initiated event, for example Account Service, define the service interface action name, for example operation1;
(c) the service interface parameter is set, from the data type that metadata provides, selecting data type, defined parameters title, and parameter type, comprise input parameter list and output parameter list;
(13) described Service interface definition analyzer resolves to the service object to the service definition in operation flow, wherein service definition is used the XML fragment to describe, the constraint of service definition specification is used XSD Schema to describe, and the service object of described service interface parser generation is Java Bean;
(a) described Service interface definition analyzer is in BPM engine start process is injected into the operation flow resolver;
(b) when finishing service process modeling and design, submit to when disposing flow process, the BPM engine triggers operation flow resolver event, can call the operation flow resolver calls the Service interface definition analyzer Service interface definition XML fragment is resolved to and comprises service name, the Java Bean object of service parameter list, and this object of buffer memory;
Described operation flow is disposed and is dynamically generated Web Service operation, comprises the following steps:
(21) described waiter grows up to be a useful person the service object is converted to virtual Java interface, use the ASM framework, mode with bytecode in JVM directly creates the Java interface, adopt following transformation rule, service name in the service object is converted to the title of Java virtual interface, action name in the service object is converted to the method name of Java virtual interface, and the parameter list in the service object is converted to the method parameter of Java virtual interface.
(22) described serviced component maker is according to service corresponding virtual Java interface, dtd——data type definition XSD Schema information, the assembly maker goes out this serviced component file according to template establishment, serviced component be can be serviced container load and the file structure of identification;
(23) described serviced component scheduler is responsible for, to the serviced component scheduling, comprising serviced component deployment, activation, issue, destruction etc.;
(a) the serviced component United Dispatching of serviced component scheduler to the establishment of assembly maker, at first assembly is to be deployed to the assignment component warehouse;
(b) component dispatcher activates target element, and the corresponding resource file of identification in activation is transferred to the XSD resource handler such as XSD etc. and loaded;
(c) component dispatcher is issued the assembly of correct activation, provides in Web Service mode; 24) described Version Control device switches the serviced component version, and the released version serviced component is served by default; Described system failure recovery operation comprises the following steps:
(31) described service disaster recovery process device is when system runs into the disaster fault and need to restart, and the disaster recovery process device checks the serviced component state as starting Listener, determines whether to start and recovers;
(32), after described service disaster recovery process device determine to start recovers, call the waiter and grow up to be a useful person failed services in system is regenerated;
Described operation flow service safe interception operation comprises the following steps:
(41) described service safe controller is tackled service request according to the user name and password of system configuration, and unauthorized user is forbidden calling;
(a) arrange and enable the fail safe of operation flow dynamic Service, this setting is setting of overall importance, and namely in the BPM system, all flow processs adopt unified security strategy, and the username and password of service is set;
(b) to the modification of fail safe, can trigger redeploying of serviced component, rule is as follows: if enable service safe, the intrasystem all serviced components of serviced component scheduler scanning BPM, increase its security policies and describe.
Following description:
Security strategy is defined in the Definition.xml file and arranges, and configures as follows
If cancel service safe, component dispatcher scan service assembly, wherein
<binding.ws policySets=" sca_1.0:wsAuthenticationPolicy "/> knot removal.
(c) user security interception is by expansion CallbackHandler Interface realization, to Web the Service the user name and password called and the coupling arranged before, if unauthorized user throw exception;
Described operation flow service access operation comprises the following steps:
(51) described Dynamic Web Service access module (Invoker) is responsible for handle and is called with the Web Service of BPM system independence the local API Calls that is converted to the BPM system;
(a) Invoker is going out the operation flow title when pre-treatment to Web Service request process process analysis, and required parameter etc., the Message Start Event of final requested service flow process are carried out and started flow process.
(b) Invoker has called afterwards returning results in the Response that turns back to Web Service;
(c) if abnormal, Invoker turns back to abnormal information in Fault Body;
Described dynamic Service bookkeeping comprises the following steps:
(61) described dynamic Service administration module, to serviced component management all in system, comprises inquiry service WSDL, statistics service data etc.
(a) the Dynamic Web Service of BPM system issue need to provide a current available service list of interface inquiry, supports the user to call or integrated etc. with the ESB system, and administration module provides query function.
As shown in Figure 6, in enterprise B PM system of the present invention, realizing that operation flow dynamically generates the sequential chart of the method for Web Service, its sequential is:
1,, after in the composite configuration file, reading the configuration information of expansion, can call read () method in ProcessDirectProcesser;
2, in read () method, create the example of ProcessServiceImplementationImpl;
3, the process name in ProcessServiceImplementationImpl is set;
4, version number is set;
5, call the build () method in ProcessServiceImplementationImpl, create Web service;
6, call the example that assemblyFactory.createService () creates Service;
7, create the example of Service;
8, the title of the example of Service is set, namely externally issues the title of web services;
9,, according to flow definition, create corresponding java interface;
10, by the java interface issue wsdl created.
In the present invention, after operation flow service issue, the mutual bridge of client and BPM system end is WSDL (WebService Definition Language), comprising following essential element:
The container of types---dtd——data type definition, carry out the structural information of data of description type with XML Schema.
PortType---the abstract set of service operations is described, with the Java interface class seemingly.
The concrete host-host protocol of binding---appointment in data transmission procedure and the data format specifications of institute's defining operation.
Service---the service externally provided.
Operation---to the abstractdesription of the operation supported in service, the requests/response messages of access entrance and abnormal statement have been described.
In calling Web Service process, the mutual information of client and server is soap message, defines with the XML form, and its structure has comprised following essential element:
SOAP Body---encapsulated the data that will transmit.
SOAPHeader---as the expansion of pass-along message, can freely add.
As shown in Figure 7, for utilizing method of the present invention in enterprise B PM system, to realize that operation flow dynamically generates the sequential chart that Web Service calls.Externally during the Web service of the flow process of system call issue, can adjust back the invoke () method in ProcessDirectInvoker.In invoke () method, obtain process name and version number by the IProcessServiceImplementation interface, the parameter of importing into during Message parameter acquiring called Web service by importing into.Call afterwards the flow startup interface of engine, start flow process.
In BPM system of the present invention, realize that operation flow dynamically generates the method for Web Service, comprise Web interface layout operation flow definition service interface and dynamically generate Web Service, described method comprises the general framework of runtime support different pieces of information object conversion expansion and the configuration format definition of development period data object conversion.The general framework that runtime is supported different pieces of information object conversion expansion comprises that the configuration of data object conversion loads, by this configuration, form the directed graph of data type conversion, according to directed graph, can find the required shortest path of conversion from the source data type to the target data type, the conversion operations of different pieces of information object is provided for access service and while picking out service simultaneously, during data transaction, the metadata of interface unification is described with WSDL.The configuration format definition of development period data object conversion has comprised for the Interface realization of specific data type conversion and to the registration of transducer.
Through above step, operation flow need not be encoded after layout, system need not be restarted, without technical staff's exploitation, namely generated Web Service, other system namely can integrate, and therefrom can draw to have adopted in the BPM system to realize that operation flow dynamically generates the method for Web Service, make the development of operation flow become simple and efficient, no longer need service encapsulates etc., and external business service is unified, data type is consistent.
Adopted in the enterprise B PM system of this invention and realized that operation flow dynamically generates the system of Web Service, it comprises operation flow Service interface definition module, connect the Dynamic Web Service member load module of this operation flow Service interface definition module, the dynamic generation module of Web Service and the disaster recovery module that connect the load module of this Dynamic Web Service member, the dynamic Service administration module and the safety control module that connect the dynamic generation module of this Web Service, and the operation flow service release control module be connected with the dynamic generation module of Web Service with the load module of described Dynamic Web Service member respectively.Utilize the operation flow of this system dynamically to generate the method for Web Service, its operation flow has natural Integrated Trait, in the layout flow process, issues out Web Service, and the service interface standard is unified, without coding.System portability and extensibility have been strengthened simultaneously, variation and the technique variation that can adapt to fast business demand, can support the software systems of setting up high modularization and highly integrating again, development period, is simple, interface is clear and definite, and configuration is convenient, and runtime efficiency is higher, systematic function is reliable and stable, the scope of application is comparatively extensive, for the integrated development of BPM system lays a solid foundation.
In this specification, the present invention is described with reference to its specific embodiment.But, still can make various modifications and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (15)
1. in an enterprise B PM system, realize that operation flow dynamically generates the system of Web Service, it is characterized in that, described system comprises:
Operation flow Service interface definition module, in order to define the Web Service interface message of operation flow; Described operation flow Service interface definition module comprises:
Service interface metadata schema resolver, resolve in order to the data type that the BPM system is supported;
Operation flow Service interface definition configurator, be connected with described service interface metadata schema resolver, defines with the XML language in order to service name and service parameter to operation flow definition service interface;
The Service interface definition analyzer, be connected with described operation flow Service interface definition configurator, and connect the load module of described Dynamic Web Service member, in order to Service interface definition is converted to the service object;
The load module of Dynamic Web Service member, be connected with described operation flow Service interface definition module, in order to the Web Service interface message mounting structure according to operation flow;
The dynamic generation module of Web Service, be connected with the load module of described Dynamic Web Service member, in order to load described member, generates Web Service service, and provide Web Service service access to process;
The dynamic Service administration module, be connected with the dynamic generation module of described Web Service, in order to Web Service is managed to operation;
The disaster recovery module, with the load module of described Dynamic Web Service member, in order to when system is restarted, automatically to generate Web Service according to the operation flow in system;
Safety control module, be connected with the dynamic generation module of described Web Service, in order to service provides safety guarantee to Web Service;
Operation flow service release control module, be connected with the dynamic generation module of Web Service with the load module of described Dynamic Web Service member respectively, and the dynamic Service of many versions is provided in order to the operation flow service of many versions of existing in described system.
2. in enterprise B PM system according to claim 1, realize that operation flow dynamically generates the system of Web Service, it is characterized in that, the load module of described Dynamic Web Service member comprises:
The service interface maker, connect described Service interface definition analyzer, produces the virtual java interface of service according to described Service interface definition;
The serviced component maker, connect described service interface maker, according to described Service interface definition, creates the services component bag that comprises service and data type resource;
The serviced component scheduler, connect described serviced component maker, and connect the dynamic generation module of described Web Service, according to described Service interface definition, deployment, issue, the destruction of serviced component dispatched.
3. in enterprise B PM system according to claim 2, realize that operation flow dynamically generates the system of Web Service, it is characterized in that, the dynamic generation module of described Web Service comprises:
The services component loader, connect described serviced component scheduler, in order to load described services component bag;
Web Service waiter grows up to be a useful person, and connects described services component loader, generates Web Service service by described virtual java interface;
Web Service serves access device, connecting described Web Service waiter grows up to be a useful person, and connect described dynamic Service administration module, disaster recovery module, safety control module and operation flow service release control module, in order to being provided, Web Service calls the Business Processing of affairs.
4. one kind is utilized system claimed in claim 1 to realize in enterprise B PM system realizing that operation flow dynamically generates the method for Web Service, and it is characterized in that, described method comprises the following steps:
(1) described operation flow Service interface definition module is carried out the operation of operation flow layout procedure definition service interface information, specifically comprises the following steps:
(11) data type of described service interface metadata schema resolver loading system support, described data type
Comprise simple data type and complex data type;
(12) described operation flow Service interface definition configurator layout flow process configuration service interface;
(13) described Service interface definition analyzer resolves to the service object by the service definition in operation flow;
(2) load module of described Dynamic Web Service member and described operation flow service release control module are carried out dynamically generation Web Service operation of operation flow heat deployment;
(3) described disaster recovery module is carried out the system failure recovery operation;
(4) described safety control module carries out operation flow service safe interception operation;
(5) the dynamic generation module of described Web Service carries out operation flow service access operation;
(6) described dynamic Service administration module carries out the dynamic Service bookkeeping.
5. in enterprise B PM system according to claim 4, realize that operation flow dynamically generates the method for Web Service, it is characterized in that, described complex data type is one or more in Java Bean, List, Set and Map type.
6. in enterprise B PM system according to claim 4, realize that operation flow dynamically generates the method for Web Service, it is characterized in that, described Service interface definition is to comprise the XML fragment that the interface definition structure is described XSD Schema, Service interface definition comprises service interface title and service interface parameter list, and described service interface parameter list comprises and imports parameter and return value into.
7. in enterprise B PM system according to claim 6, realize that operation flow dynamically generates the method for Web Service, it is characterized in that, described Service interface definition analyzer resolves to the service object by the service definition in operation flow, specifically comprises the following steps:
(131) described Service interface definition analyzer is injected in service interface metadata schema resolver in BPM engine start process;
When (132) flow process is disposed at the Web interface, service interface metadata schema resolver calls the Service interface definition analyzer Service interface definition XML fragment is resolved to and comprises service name, the Java Bean object of service parameter list, and this Java Bean object of buffer memory.
8. in enterprise B PM system according to claim 4, realize that operation flow dynamically generates the method for Web Service, it is characterized in that, the load module of described Dynamic Web Service member comprises: service interface maker, the serviced component maker that connects described service interface maker and the serviced component scheduler that connects described serviced component maker, the load module of described Dynamic Web Service member and operation flow service release control module are carried out operation flow heat and are disposed dynamically generation Web Service operation, specifically comprise the following steps:
(21) described service interface maker triggers the service object is converted to virtual Java interface according to the operation flow Dynamical Deployment;
(22) corresponding virtual Java interface, the dtd——data type definition XSD Schema information of described serviced component maker loading service, and go out this serviced component file according to template establishment;
(23) described serviced component scheduler is dispatched serviced component, and described scheduling comprises serviced component deployment, issue and destroys;
(24) described operation flow service release control module is switched the serviced component version, and the released version serviced component is served by default.
9. in enterprise B PM system according to claim 8, realize that operation flow dynamically generates the method for Web Service, it is characterized in that, described serviced component comprises service assembling file, relies on resource XSD file and complex data type Acegis file.
10. in enterprise B PM system according to claim 9, realize that operation flow dynamically generates the method for Web Service, it is characterized in that, virtual Java interface, the dtd——data type definition XSD Schema information that described serviced component maker loading service is corresponding also goes out this serviced component file according to template establishment, specifically comprises the following steps:
(221) described serviced component maker calls the virtual Java interface of service interface maker establishment as service interface;
(222) described serviced component maker, according to the reflectance data type of service interface, judges whether to rely on relevant XSD file, if, enter step (223), if not, enter step (224);
(223) the serviced component maker is put into serviced component from the BPM system, loading this XSD file, and enters step (224);
(224) the serviced component maker, according to the reflectance data type of service interface, judges whether to comprise List, Set or Map complex data type, if, enter step (225), if not, enter step (226);
(225) the serviced component maker creates the Aegis file of describing complicated type and puts into serviced component, and enters step (226);
(226) the serviced component maker uses template asset creation serviced component.
Operation flow dynamically generates the method for Web Service 11. realize in enterprise B PM system according to claim 4, it is characterized in that, described disaster recovery module is carried out the system failure recovery operation, specifically comprises the following steps:
(31) described disaster recovery module checks the serviced component state as starting Listener when system runs into the disaster fault and need to restart, and determines whether to start and recovers;
(32) after described disaster recovery module determines that startup recovers, call described Dynamic Web Service member load module device failed services in system is regenerated.
Operation flow dynamically generates the method for Web Service 12. realize in enterprise B PM system according to claim 4, it is characterized in that, described safety control module carries out operation flow service safe interception operation, is specially:
Described safety control module is tackled service request according to the user name and password of system configuration, and forbids that unauthorized user calls.
Operation flow dynamically generates the method for Web Service 13. realize in enterprise B PM system according to claim 4, it is characterized in that, the dynamic generation module of described Web Service carries out operation flow service access operation, is specially:
The dynamic generation module of described Web Service is tackled service request according to the user name and password of system configuration, and forbids that unauthorized user calls.
Operation flow dynamically generates the method for Web Service 14. realize in enterprise B PM system according to claim 4, it is characterized in that, described dynamic Service administration module carries out the dynamic Service bookkeeping, is specially:
Described dynamic Service administration module manages serviced components all in system.
Operation flow dynamically generates the method for Web Service 15. realize in enterprise B PM system according to claim 14, it is characterized in that, described management comprises inquiry service WSDL and statistics service data.
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