This topic describes the Web services
development scenarios.
The Web service development scenarios are bottom-up
development, meet-in-middle development, and top-down
development (see Web services development scenarios).
Note: For single-service projects there are several
project subtypes, based on the runtime environment for which the project
generates output files (shown in the Runtime column of
Table 2:
Table 1. Categories
of Projects
| Category: |
Types of projects included in this category: |
Basis for categorization: |
| Single-service project |
- Web Services for CICS® Project
- XML Transformation for CICS Project
- IMS Enterprise
Suite SOAP Gateway Project
- Batch, TSO, z/OS® UNIX System
Services Project
|
- Each of these types of projects helps you
to generate files associated with a single Web service; and
- The development process for each of these types
of projects is similar.
|
Table 2. Web
Service Development Scenarios for Single-Service Projects in Enterprise
Service Tools
| Runtime: |
Tasks you can accomplish: |
| Web Services for CICS Project |
- Bottom-up development: Generate a Web service description
and runtime-specific request and response XML message processing from
a high level language data structure. You can use this method to create
a service provider program (one that runs
using Web Services for CICS protocols)
for an existing CICS application.
- Meet-in-middle development: Define mappings between high
level language data structures and WSDL, XML, or
XSD files. You can use this method to generate runtime-specific
request and response XML message processing based on the mappings.
Note: You can use mapping to an Existing Service Interface
(meet-in-middle) wizard when you run the Enterprise Service
Tools Wizard Launchpad inside the Enterprise Service Tools
perspective. Access to the wizard is still allowed when you run the
wizard outside the Enterprise Tools perspective (see Contexts for starting the single-service wizards).
- Top-down development: Generate a high-level language structure
and runtime-specific request and response XML message processing from
a Web service description (WSDL file). You can use this method to:
- Create a service provider program (one
that runs using Web Services for CICS protocols)
for a new CICS application.
- Create a service provider program (one
that runs using Web Services for CICS protocols)
for an existing CICS application.
- Create a service requester program (one
that runs using Web Services for CICS protocols).
See Web Services for CICS project. |
| XML Transformation for CICS Project |
- Bottom-up development: Generate files for
the XML Transformation and runtime-specific XML processing from a
high level language data structure.
- Top-down development: Generate a high-level
language structure and runtime-specific XML processing from an XSD
file.
Note: Meet-in-middle development is not
supported.
|
| IMS Enterprise
Suite SOAP Gateway Project |
- Bottom-up development: Generate a Web service description
and runtime-specific request and response XML message processing from
a high level language data structure. You can use this method to create
a service provider program (one that runs
using IMS Enterprise
Suite SOAP Gateway protocols) for an existing IMS application.
- Meet-in-middle development: Define mappings between high
level language data structures and WSDL, XML, or
XSD files. You can use this method to generate runtime-specific
request and response XML message processing based on the mappings.
- Top-down development: Create a new service
implementation from the information in a WSDL file (supported only
for the IMS Enterprise Suite
SOAP Gateway with compiled conversion and Enterprise PL/I).
See IMS Enterprise Suite SOAP Gateway project. |
| Batch, TSO, z/OS UNIX System
Services Project |
- Bottom-up development: Generate a Web service description
and runtime-specific request and response XML message processing from
a high level language data structure. You can use this method to create
a service provider program (one that is not
runtime-specific) for an existing CICS application.
- Meet-in-middle development: Define mappings between high
level language data structures and WSDL, XML, or
XSD files. You can use this method to generate non-runtime-specific
request and response XML message processing based on the mappings.
See Batch, TSO, z/OS UNIX System Services project. |