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ESRI Maps Out GIS Platform for SOA


Connects spatial analysis tools with app dev framework, Web services

By David Worthington
March 1, 2007 — 
Feeling lost? A Geospatial Information System (GIS) can point you in the right direction. It displays, edits and queries geographically referenced information that then is made available through mapping, spatial analysis and modeling functions. GIS applications are multipurposed and versatile, providing scientists, historians, marketers and criminologists alike with useful information to examine locations and assets.

ESRI is charting a new direction for GIS by integrating its applications into a service-oriented architecture (SOA). ESRI has taken its existing spatial design tools and coupled them with an application development framework (ADF) for .NET and Java. The new ArcGIS 9.2 uses a combination of Web services protocols and administrative tools to achieve SOA support. The end result is that GIS services are connected with enterprise services.

ESRI provides three of its own development platforms: ArcGIS Desktop; ArcGIS Engine for building custom

GIS applications; and ArcGIS Server, which offers a centralized repository for ArcGIS Desktop and a portal for GIS applications.

These platforms allow the use of four common development platforms. Cross-platform C++ and COM are supported in addition to Java and .NET.

The ArcGIS framework supports JavaServer Faces-based Web controls and templates, which are exposed in the IDE as drag-and-drop elements for JavaServer Pages. Enterprise JavaBeans are included for mapping, geocoding, geoprocessing and network analysis tasks. Web and enterprise service templates are also available.

CONTROLS, COMMANDS FOR VS
If Java is not brewing at an organization, Microsoft’s .NET 2.0 platform is another option for visually developing ArcGIS applications. Templates, wizards, code snippets, documentation and component-level help are integrated into the Visual Studio IDE through a plug-in. ArcGIS offers nearly 200 custom controls and commands for Visual Studio 2005.

“Generally speaking, everyone is moving to SOA,” said Yankee Group analyst Laura DiDio. “It is a new way of doing business, and support for this is designed to cause the least amount of disruption to the existing software, hardware and Internet working infrastructure, while at the same time, providing customers with expanded services and functionally.”


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