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Using Mapping Relations to Semi Automatically Compose Web Services

Using Mapping Relations to Semi Automatically Compose Web Services. Marwan Sabbouh, Ph.D. The MITRE Corporation 781-271-2986 ms@mitre.org April 2008. Background. Applications. Scripting. WSDL. XSL. J2EE. .NET. Mashups. Service Strategy. Integrated Data and Services Strategy.

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Using Mapping Relations to Semi Automatically Compose Web Services

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  1. Using Mapping Relations to Semi Automatically Compose Web Services Marwan Sabbouh, Ph.D. The MITRE Corporation 781-271-2986 ms@mitre.org April 2008

  2. Background Applications Scripting WSDL XSL J2EE .NET Mashups Service Strategy Integrated Data and Services Strategy Increased User Participation (Decreased Complexity) Data Strategy Schema HTML WMSL Metadata XML Databases

  3. New WSDL Legacy Web Service Legacy Web Service Context Web Service WSDL WSDL WSDL Services Composition in SOA Mashup or Integrating Web Service

  4. Data Mediation • SOA requires data mediation • Instance translation in the form of XSLT • Schema mediation • We suggest using mapping relations to achieve data mediation in SOA

  5. Data Source A Data Source B Web Users Use GUI to Generate Code and Metadata Tools Generate Data Model WMSL + Minimal Code Web Page Mapping relations Approach

  6. Common Data Model Translator Shared Vocabulary Tracking Service Universal CORE CoT Driver Display Simple Use Case Web Page <html> Imports of schemas <script>10-20 lines entities mappings or metadata <Javascript> 5 lines Workflow Mediation Automatic Generation of Shared Vocabulary and Common Data Model Web Page Implements Workflow

  7. Sample WMSL Discovery Metadata Schema Import Mappings Code

  8. Benefits • Mapping relations can be generated by Web users using GUIs as part of generating the code • Promotes reusability of mapping relations • Unifies the process of generating metadata and code • Technique can be implemented to run in the browser; hence it is a lightweight solution • Results in unifying the strategies for SOA, data, and metadata • Ensures that data semantics are being generated as a result of doing the integration

  9. Backup

  10. Mapping “When”

  11. Mapping “Where”

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