The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Nowadays, IP-based physical security products like IP network camera (IPNC) are becoming essential in construction of a modern security system. In order to guarantee interoperability among them, ONVIF has been a de facto standard communication framework. In addition to core specification, ONVIF defines many services. ONVIF Event service is supposed to provide notification messages to registered clients...
<?Pub Dtl?>In this paper, we focus on the reliability and availability analysis of Web service (WS) compositions, orchestrated via the Business Process Execution Language (BPEL). Starting from the failure profiles of the services being composed, which take into account multiple possible failure modes, latent errors, and propagation effects, and from a BPEL process description, we provide an...
New value-added business, generated by Web service composition in BPEL, provides more powerful and flexible features. SOAP-based web services invoked in BPEL are heavy with redundant information and lower performance. RESTful Web service is brought forward to new value-added business as an alternative solution. However, it's a big challenge to compose RESTful Web services with SOAP-based Web Services...
The information development process of modern enterprise operation and management has been gradually transformed from the traditional centralized management to distributed, heterogeneous approach. To adapt this sort of requirement, the workflow management system has changed the original goal of creating the paperless office environment to the target of performing business processes automatically....
Designing and developing an effective web crawler is a challenging role in a large search engine. This paper proposes component based web crawler along with the indexer. The WebCrawler consist of crawler services and indexer services and realized as web services. The communication between the services is sent and received using XML, SOAP and WSDL. In the crawler service, the web pages are fetched...
Future manufacturing systems will require to process large amounts of complex data due to a rising demand on visibility and vertical integration of factory floor devices with higher level systems. Systems contained in higher layers of the business model are rapidly moving towards a Service Oriented Architecture, inducing a tendency to push Web Technologies down to the factory floor level. Evidence...
In a Sensor Web environment, sensors are heterogeneous. The Sensor planning service offers a standardized interface for the control of sensors and simulations. But some complex sensors like satellite need midterm or long-term action to response a given task, so, adding asynchronous support in SPS is necessary. The workflow description language can chain asynchronous web service together while it has...
With the development and application of Web service technology, the security of Web service is becoming more and more important. The security of SOAP message is an important factor which decides Web service security. In order to realize the security of SOAP message, an approach to partly sign and encrypt on SOAP message based on Rampart is proposed in this paper. The experimental results demonstrate...
Under service-oriented architecture (SOA), servers (service providers) provide services to clients as well as other orchestrators, i.e. they are parts of several orchestrations. Due to different types of interaction, servers may have to operate concurrently under several policies. Moreover, when interacting with clients or peer servers, a server may be subject to global constraints determined by system...
In recent years, Web services technologies have been successfully used for simplifying interoperability while providing scalability and flexibility in multiple applications, including distributed simulation software. The RESTful-CD++ simulation server provides Web services according to the REST principles by exposing services as URIs and consumed via HTTP messages. Therefore, the server becomes a...
A significant challenge for Web services is to find reliable and efficient methods to transfer large data between them. This paper describes the problem of scalable data transport between Web services, and proposes a solution: the development of a modular server/client library that uses SOAP as a control channel while the actual data transport is accomplished by various protocol implementation. Apart...
In order to build a totally distributed WfMS, based on Web services and event-driven, propose a new distributed workflow meta-model, provide solutions to relevant issues in realizing, follow WFMC-TC-1012 and WFMC-TC00-1003 norms, present some methods that can support distributed definition of model and distributed execution of flow, propose a high efficiency invoke algorithm, and build a distributed...
This paper presents InfoParser, an Infoset driven XML processing mechanism aimed to amend current SOAP engines by substituting InfosetharrXML binding for ObjectharrXML (O/X) mapping, which is responsible for several acute issues in Web services, including O/X impedance mismatch, portability, XML alienation, complexity and memory overhead. The proposed InfoParser approach not only avoids issues in...
PHP is well known as a programming language in the Web 2.0 era enabling agile server-side software development. It has officially supported SOAP messaging since version 5 through a C-based built-in library. In this paper we perform a thorough study of the capability of PHP as a Web service engine in both qualitative and quantitative aspects while comparing it with other Web service engines implemented...
Web Services have become increasingly popular in distributed applications, and the SOAP technology is currently the most widely used Web Service. Recently, middleware researchers have applied the interception approach to problems in various domains. Instead of providing a portable interceptor like that used in the CORBA protocol, SOAP 1.2 provides an intermediary mechanism, which has to solve the...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.