[teiid-issues] [JBoss JIRA] Commented: (TEIID-418) Server Extensions should be loaded from a Extension classpath

[Ramesh Reddy (JIRA)]

    [ https://jira.jboss.org/jira/browse/TEIID-418?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12457297#action_12457297 ] 

Ramesh Reddy commented on TEIID-418:
------------------------------------

Added "metamatrix.extension.CommonClasspath" property and removed "metamatrix.server.UDFClasspath" property. This new property will serve as common classpath property that defines the modules from extension modules, which will be used to load UDF libraries, Membership domains, custom trackers and more importantly Connector Bindings. 

Also added "ConnectorTypeClassPath" to the "Connector" properties. This classpath defines all the jars required by a given Connector, either Teiid jars or any third party jars supplied automatically by Teiid when license permits. This path is defined by Teiid process at kitting time, and should not be modified by the user.

Now, if a user is using the "JDBC Connector", Teiid will not supply any third party jars like Oracle. However, they have multiple choices how they can add this to Teiid system. They can

1) Add to the "lib" directory. Requires a restart to pick up the new jar. or
2) Add as extension module, and then add that jar to "metamatrix.extension.CommonClasspath" property using console or admin api. or
3) Add as extension module, and modify the "ConnectorClasspath" in the connector binding properties and add jar there (old way)

2 & 3 will not require restart. With the connector class path is resolved as

ConnectorClassPath <---- metamatrix.extension.CommonClasspath <------ ConnectorTypeClassPath

The ones in the left override from right in dependency hierarchy. This way if user adds  "oracle" they have option to throw in "lib" and access it everywhere, or add it in "common" and access it every where with out modifying the connector classpath.

> Server Extensions should be loaded from a Extension classpath
> -------------------------------------------------------------
>
>                 Key: TEIID-418
>                 URL: https://jira.jboss.org/jira/browse/TEIID-418
>             Project: Teiid
>          Issue Type: Feature Request
>          Components: Build/Kits, Common, Server
>    Affects Versions: 6.x
>            Reporter: Ramesh Reddy
>            Assignee: Ramesh Reddy
>             Fix For: 6.1.0
>
>
> Currently the MembershipDomain, CustomTracker load from libraries which are defined as part of the boot class path, these need to be loaded from the extension classpath, so that they can be added or removed without server re-start.

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