KR100510040B1 - Intelligent Web service gateway system based on agent and operation method therof - Google Patents

Abstract

The present invention provides an agent-based intelligent web service gateway system and an operating method thereof that can deliver the status and performance of web services to a user through an agent-based intelligent web services gateway system in a distributed network environment. For the purpose, the intelligent web service gateway system of the present invention searches the UDDI server with the input search word and delivers the search result to the web service agent server, and the web service agent server analyzes the WSDL received as the search result and uses a template generator. Generate a template, generate a web service agent with the number of search results using the generated template, perform a web service, receive the execution result received from the agent through a web service agent server, and deliver it to a user By doing Search the service efficiently, so that you can perform.

Description

Intelligent Web service gateway system based on agent and its operation method {Intelligent Web service gateway system based on agent and operation method therof}

The present invention relates to an agent-based intelligent web service gateway system and an operation method thereof, and more particularly, to an agent-based intelligent web service gateway system capable of delivering a status and execution result of a web service to a user in a distributed network environment. It is about an operation method.

Currently, the web service provided through the Internet has a characteristic that communication between applications as well as users is possible, apart from the existing application-oriented characteristics, and the service can be searched and bound using the service registry.

And, for the mutual coupling between the current web services, standardization on Simple Object Access Protocol (SOAP), Web Services Description Language (WSDL), Universal Description, Discovery, and Integration (UDDI) It is in progress.

Here, SOAP is an XML protocol standard that defines the message format used in web service requests and responses. WSDL is used to describe SOAP messages, protocols, and web location information for web services. UDDI is a standard developed to support directory services for web services. It provides a mechanism for registering, searching, and discovering web services. The UDDI registry supports the registration and discovery of business object information and web services provided by the business entity. The UDDI registry provides registration / deletion / search functions for web service information related to business information through a program service interface. have.

Therefore, major IT industries are designing and proposing web service structure based on these standards, and W3C is proceeding standardization of web service structure.

However, the current web service structure does not actually provide enough functions for e-business applications. As a result, there are many issues to address, such as transaction, security, and business flow definitions.

In addition, an intelligent web service such as semantic web for supporting e-business has been proposed, which aims to enable a machine to process the web, rather than a user to recognize and use the web. The main components of semantic web technologies are integrated data models, such as the Resource Description Framework (RDF), semantic web-generating languages such as the DAPA + Agent Markup Language plus Ontology Inference Layer (DAML + OIL), and marking up web resources. Ontology of the standardized terms. Therefore, web services become an essential element of the semantic web and can make full use of semantic web technology.

The Semantic Web is a service discovery (UDDI) corresponding to UDDI, service description (technical details), service publication (business-specific details), service interaction (specific details of the internal processing flow of the service) Interaction). It also uses SOAP over XML for various network protocols such as HTTP, FTP, and SMTP. Ontologies are excellent for representing semi-structured data and constraints, and for supporting types and inheritance. Web service standards, on the other hand, are superior in manageability, extensibility, and modularity.

Currently, for the semantic web, DAML-S and Topic Map are considered as technical standards, but there is no standardized method for query language or knowledge inference.

The present invention has been proposed to solve the above-mentioned conventional needs, and the object of the present invention is to go beyond simply providing a location of a web service to a user who uses the web service, and to efficiently use a web service desired by the user while using the same existing method. It is to provide an agent-based intelligent web service gateway system that can provide intelligent web service results that can search / perform and its operation method.

The present invention provides a method for operating an agent-based intelligent web service gateway system having a web service agent server as a construction means for achieving the above object,

Inputting a search word from a user side into the web service gateway system;

Requesting a web service search for a search word input to a UDDI server by the web service gateway system;

Receiving a list of WSDLs transmitted from a search result from the UDDI server;

Analyzing, by the web service agent server, the received WSDL list, generating as many web service agents as a search result, performing a web service, and receiving the result; And

And providing the status of the searched web service and the execution result delivered from the web service agent to the user side in the web service gateway system.

In addition, in the method for operating an agent-based intelligent web service gateway system according to the present invention, the web service agent server performing a web service through a web service agent and receiving the execution result is transmitted from the UDDI server. Receiving the search result and analyzing a list of WSDLs of the search result; Generating a template by transferring the analysis result to a template generator; Generating a web service agent having the generated template by the number of the UDDI search results; Delivering the generated template to the generated web service agent; Receiving a web service execution result of the generated web service agent; And destroying the generated web service agent when the execution result is received.

In addition, the method for operating an agent-based intelligent web service gateway system according to the present invention receives a user setting value for determining a form of providing a web service search result from a user side, and performs a web service search result and a web service execution result according to the user setting value. It further comprises the step of setting the form of providing information, such as, it is characterized in that the user convenience.

In addition, in the agent-based intelligent web service gateway system operating method according to the present invention, the WSDL analysis step of the web service agent server is a parameter required for the web service agent server to parse the contents of the WSDL, to call the web service It is characterized by consisting of the type and extract the WSDL.

In addition, the method of operating an agent-based intelligent web services gateway system according to the present invention, the template generation step, the template generator receiving a parameter type and WSDL required to call a web service from a web service agent server; And generating, by the template generator, an XML template of SOAP type having an arbitrary value according to the delivered parameter type and the number of searched results.

In addition, the present invention includes a controller for receiving a search word from a user to search a UDDI server or to provide a user with a web service execution result; A web service agent server that receives a UDDI search result from the controller and generates a web service agent as many as the search result; A template generator configured to receive a WSDL analysis result from the web service agent server and generate a SOAP type template having an arbitrary value; An agent-based intelligent web service gateway system including a web service agent that directly performs a web service according to a UDDI search and delivers a result to the web service agent server is provided.

Hereinafter, with reference to the accompanying drawings, the most preferred embodiment of the present invention will be described.

1 is a block diagram of an agent-based intelligent web service gateway system to which the present invention is applied.

In the figure, the UDDI server 100 lists business listings provided worldwide on the Internet, namely, names, products, locations, web services, and the like in a list, and facilitates mutual online trading and e-commerce interaction on the web. Provide for operation.

In addition, the intelligent web service gateway system 200 according to the present invention receives a search word from a user and provides a web service related to the search word to the user. In this case, when the user receives a search result from the intelligent web service gateway system 200, the user may query only the current state of the web service or even the web service execution result.

When the user sets the search result environment, the controller 210 stores and changes the user setting 211 accordingly. Then, the web service execution result is provided to the user according to the stored user setting 211.

The controller 210 receives a search word from a user, requests a web service search from the UDDI server 100, and the UDDI server 100 performs a requested web service search to obtain a list of web service WSDLs. Transfer to the controller 210.

The controller 210 provides the WSDL list transmitted from the UDDI server 100 to the web service agent server 220, and the web service agent server 220 analyzes the WSDL list of the input web service and performs a web service. Pass the types of parameters for calling to the template generator 230.

That is, the template generator 230 receives a parameter type and a WSDL from the web service agent server 220 as input. In addition, an arbitrary value corresponding to the parameter type is generated to generate a document of a SOAP format, a web service agent 230, to invoke a web service. The generated web service agents 240a to 240n call the corresponding web services 300a to 300n using a template, and transmit the result of the execution to the web service agent server 220.

The execution result delivered to the web service agent server 220 is provided to the user according to the user setting in the controller 210.

2 is a signal processing flowchart of the intelligent web service gateway system of the present invention configured as described above.

Referring to FIG. 2, when the controller 210 requests a web service search from the UDDI server 100, the UDDI server 100 searches for a registered list and transmits a web service search result to the controller 210. (S401).

Accordingly, the controller 210 transmits the WSDL list which is the web service search result transmitted from the UDDI server 100 to the web service agent server 220 (S402), and the contents of each WSDL in the web service agent server 220. Parsing Then, the type of parameters required to call the web service and the WSDL are transmitted to the template generator 230 (S403).

Next, the template generator 230 generates an arbitrary value according to the type of the input parameters, and generates an XML document of SOAP type, which is a standard protocol, as a template. The web service agent server S403 generates the web service agents 240a to 240n as many as the WSDL list, and delivers the template generated by the template generator 230 to each web service agent 240a to 240n. (S404a to S404n).

The web service agents 240a to 240n corresponding to the searched web services respectively call the web services 300a to 300n using templates (S405a to S405n). The result of performing the web services 300a to 300n is transmitted to the controller 210 via the web service agents 240a to 240n and the web service agent server 220, and finally, the user setting in the controller 210 is performed. 211) to the user.

3 is a flowchart illustrating an operation flow of the web service agent server 220 in the system according to the present invention.

As shown in the figure, the web service agent server 220 of the present invention receives the web service search results from the controller 210 to analyze the WSDL (s1, s2), and the analysis results to the template generator 230 Delivering and generating web service agents 240a to 240n (s3.s4), and receiving and delivering web service execution results by the generated web service agents 240a to 240n to the controller 210. (s5 to s6) and the step (s7) of destroying the generated web service agents 240a to 240n.

In more detail, first, the web service agent server 220 receives a UDDI search result from the controller 210 (S1).

Then, the web service agent server 220 parses the input WSDL document and recognizes the types of parameters necessary for executing the web service (S2).

Thereafter, the web service agent server 220 transmits the analysis result to the template generator 230 (S3).

Then, receiving the template from the template generator 230, the web service agent server 220 generates the web service agent (240a ~ 240n) as many as the number of UDDI search results (S4).

The web service agents 240a to 240n generated as described above execute the web services 300a to 300n with a template including an arbitrary value, and then transmit the result to the web service web service agent server 220. (S5).

The web service agent server 220 receiving the web service delivers the result of performing the web service to the controller (S6), and adjusts the load of the system by destroying the generated web service agents 240a to 240n (S7).

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited to the drawings shown.

The present invention can provide not only a simple web service search but also a detailed web service execution result to the user, so that the user can efficiently search for and perform a desired web service, and only the current state information of the web service according to the user's setting It is possible to check or even check the actual execution result of the web service directly performed by arbitrary values, so that the user can search the web service only by the result provided by the present invention without manually performing all the web services. It works.

1 is a block diagram showing a partial configuration of a web service gateway system according to the present invention.

2 is a block diagram illustrating a signal flow in a web service gateway system according to the present invention.

3 is a flowchart showing an operation procedure of the web service gateway system according to the present invention.

* Explanation of symbols for the main parts of the drawings *

100: UDDI (Universal Description, Discovery, and Integration) Server

200: intelligent web service gateway system

210: controller

211: user settings

220: Web service agent server

230: template generator

240a ~ 240n: web service agent

300a ~ 300n: web service

Claims (6)

In a method of operating an agent-based intelligent web service gateway system having a web service agent server, Inputting a search word from a user side into the web service gateway system; Requesting a web service search for a search word input to a UDDI server by the web service gateway system; Receiving a list of WSDLs transmitted from a search result from the UDDI server; Analyzing, by the web service agent server, the received WSDL list, generating as many web service agents as a search result, performing a web service, and receiving the result; And And providing the status of the searched web service and the execution result delivered from the web service agent to the user side in the web service gateway system. The method of claim 1, wherein the web service agent server performs a web service through a web service agent and receives a result of performing the web service agent. Receiving a search result transmitted from the UDDI server and analyzing a WSDL list of the search result; Generating a template by transferring the analysis result to a template generator; Generating a web service agent having the generated template by the number of the UDDI search results; Delivering the generated template to the generated web service agent; Receiving a web service execution result of the generated web service agent; And And destroying the generated web service agent when the execution result is received. The method of claim 1, The web service gateway system receives a user setting value for determining a form of providing a web service search result from a user, and sets a form of providing information such as a web service search result and a web service execution result according to the user setting value. Method of operating an agent-based intelligent web services gateway system further comprising. The method of claim 2, wherein the WSDL analysis step The web service agent server parses the contents of the WSDL, and extracts the WSDL and the type of parameters required to invoke the web service. The method of claim 4, wherein the template generation step Receiving, by the template generator, a parameter type and a WSDL required to call a web service from a web service agent server; And And generating, by the template generator, an XML template of a SOAP type having an arbitrary value according to the delivered parameter type and the number of searched results. In agent-based intelligent web service gateway system in a distributed network environment, A controller for receiving a search word from a user to search for a UDDI server or to provide a result of performing a web service to a user; A web service agent server which receives a UDDI search result from the controller and generates a web service agent equal to the search result; A template generator configured to receive a WSDL analysis result from the web service agent server and generate a SOAP type template having an arbitrary value; Agent-based intelligent web service gateway system comprising a web service agent that directly performs a web service according to a UDDI search and delivers the result to the web service agent server.