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Generation PDF417 in Java Real-Time Access and Synchronous/Asynchronous Messaging

Real-Time Access and Synchronous/Asynchronous Messaging
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is typically synchronous and in real time.
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Guaranteed Delivery The delivery of messages is not guaranteed. Operating System Requirements
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on the mainframe.
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Additional Hardware Requirements
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This option requires the z/OS system
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The IMS TM Resource Adapter runs in a WebSphere application on a number of distributed platforms, including Windows, AIX, Linux, zLinux, and HP-UX.
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Security This option supports component-managed and containermanaged security, including container-managed thread identity. This option supports SSL communication between the IMS TM Resource Adapter and IMS Connect. Data Type Centricity
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Data is transported in copybook format.
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ration Developer, or WebSphere Developer for z-Series to parse the input and output of a target J2EE application and also to generate a WSDL file from the copybook.
Web Services Support in CICS V3.1
CICS Web Services Support in CICS TS V3.1 enables applications running in CICS TS V3.1 to participate in a heterogeneous Web Services
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environment as a service requester, a service provider, or both, using either HTTP or WebSphere MQ as the transport mechanism. Figure 9.6 provides a high-level view of this option. Web Services Support contains three components:
A pipeline process, which controls the processing of SOAP messages. CICS TS V3.1 also supplies some message handlers that process SOAP messages. The pipeline process uses a con guration le to determine which SOAP handler to invoke, as shown in Figure 9.7. Web Services Assistant, which is a tool you can use to generate WSDL and WSBIND les. The CICS application uses WSBIND les to transform application data to SOAP messages, and vice versa. Alternatively, you can use WebSphere Developer for z-Series to generate the WSDL and WSBIND les. CICS resources for management.
Distributed Platform
Mainframe: z/OS CICS TS V3.1 CICS Web Services Support
Client Application
SOAP/ HTTP
Application COMMAREA/3270
The CICS TS version 3 Web Services Support option for integrating CICS applications
WSBind
Service Requester
Pipeline
Handler
Business Logic
CICS
Detail working of Web Services Support in CICS version 3
Integrating Mainframe Applications
An attractive additional feature of the CICS Web Services Support is the CICS Service Flow feature. You can use this feature to enable accessing terminal-oriented CICS applications, to aggregate multiple terminal-oriented interactions into a business flow process, or to aggregate terminal-oriented applications with COMMAREA applications. The CICS Service Flow feature is a composition of WebSphere Developer Service Flow Modeler (SFM) and CICS Service Flow Runtime (SFR). SFR uses a component called Link3270 Bridge to access terminal-oriented applications. Here is a brief discussion of the various aspects of this approach of integrating mainframe applications to help you decide whether this option is suitable for your situation.
Work Required
Developers need to generate WSDL and WSBIND files using either the Web Services Assistant tool or WebSphere Developer for z-Series. System programmers need to do the following: Create a PIPELINE resource de nition and a PIPELINE con guration le. Install PIPELINE de nitions and TCPIPSERVICE. Publish WSDL. Requires z/OS and CICS TS V3.1 or higher.
Technology Constraints
Real-Time Access and Synchronous/Asynchronous Messaging Access is
in real time using synchronous messaging.
Guaranteed Delivery Delivery can be ensured if you use WebSphere MQ as the transport mechanism. Operating System Requirements z/OS is required on the mainframe. Additional Hardware Requirements
hardware. data transport.
This option requires no additional
Security SSL is supported; it provides the necessary security during
In summary, this option (also called direct expose of the CICS applications) should be used when expediency is the primary motivator. By eliminating the need to write new code, you can save development and testing time. However, the service requirement must match closely with
Cost There is no additional cost; you must use V3.1 of CICS TS.
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the functionality and data that is already in the existing CICS application. Therefore, there should be no requirement for customizing the information flowing between the CICS application and the service consumer.
CICS Transaction Gateway
Older versions of CICS, such as V2.3, do not have native support for Web Services; hence, the functionalities of the CICS applications for such older systems cannot be exposed directly. Therefore, to expose the functionalities embedded in older CICS applications that run on V2.3 and earlier versions, an indirect approach must be employed. With this approach, the CICS applications are wrapped in a Java/J2EE class (for example, as a session EJB) that is then exposed as a Web Service. The approach uses an adapter (or a connector) to access the CICS application. This indirect expose pattern provides maximum control over the transportation of data, the aggregation of CICS functions, and the mapping of a required service contract (WSDL document) to the underlying implementation, represented by a COBOL copybook. The main software component in this approach is a CICS Transaction Gateway (CICS TG), which includes a Java Connector Architecture (JCA) Resource Adapter. CICS TG for Multiplatforms V6.0 runs on a multitude of operating systems and platforms to support connectivity to all inservice (that is, all versions of) CICS servers. Here are some of the operating systems and platforms on which CICS TG V6.0 is supported:
Linux on System z Linux on Intel Linux on POWER AIX HP-UX Sun Solaris (on SPARC) Various versions of Windows
CICS TG for Multiplatforms consists of the following runtime components:
The Gateway daemon, which listens for incoming requests and manages the threads and connections necessary to ensure good performance. The Client daemon, which provides the communications to the CICS servers and non-Java APIs. A Java class library or JCA Resource Adapter, which is deployed into the client runtime environment. This resource adapter for J2EE Client is deployed into a J2EE application server.
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