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LexEVS Local Runtime Installed components

1. #Service _ Management consists of and API and example programs to load, index, publish, and manage both vocabulary content and service metadata for the vocabulary server. Examples are found in the admin directory of the LexEVS root installation directory.
2. LexEVS Application Programming Interface (API) is comprised of methods to support Lexical Operations, Graph Operations, Value Set Operations, Authoring Operations, and History Operations. Examples are found in the examples directory of the LexEVS root installation directory.
3. #Documentation consists of detailed JavaDocs and both a Programmer's Guide and an Administration Guide.
4. #Automated Test Suite is provided to validate the LexEVS installation. It includes relatively small sample vocabularies that can be loaded by the user. These can be found in the test directory and its sub-directory, testData.
5. #Configuration and Resource Files provide custom configuration of the LexEVS runtime to users.

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The Distributed LexEVS environment is distributed as a single WAR archive designed to be installed in a web application container.

Distributed Installed Components

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• A Subset of the LexEVS API: Management, administration and authoring tools are not included for Java remote method invocation (RMI). Central querying functionality is the emphasis.
• Query By Example Querying Services: A Java based version of the database querying interface that makes queries based on calls defined by LexGrid model elements.
• Web Services for SOAP messaging: Providing a platform independent service to the database for LexGrid model elements to users of Perl, .net, C/C++, C#, Python and so on.
• XML-HTTP or REST Services: Providing LexGrid Model query access to any user with a browser or browser like application.

The following figure shows SOAP via web services, Query by example, and XML-HTTP or REST Services grouped together, and Distributed Remote LexEVS JAVA API with Coded Node Set Operations, Coded Node Graph Operations, Mappings, and History.

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Overview of LexEVS Grid Services

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Provides the same subset of the LexEVS APIs as the Distributed environment but is ISO 21090 compliant. The following figure shows the LexEVS Grid Service Java API with Coded Node Set Operations, Coded Node Graph Operations, Mappings, and History.

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Data Grid Service

Allows users to make federated queries, using the CQL XML based query language, of LexGrid model elements hosted at LexEVS grid service nodes. The following figure shows a Federated CQL Queries element.

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