[jboss-jira] [JBoss JIRA] (AS7-6154) Inconsistent expression support

[Heiko Braun (JIRA)]

    [ https://issues.jboss.org/browse/AS7-6154?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12741101#comment-12741101 ] 

Heiko Braun commented on AS7-6154:
----------------------------------

Some of the subsystem declare support for expressions and the runtime service reflect the changes accordingly, but then the XML serialisation breaks:


{noformat}
09:40:36,969 ERROR [org.jboss.as.server] (Controller Boot Thread) JBAS015956: Caught exception during boot: org.jboss.as.controller.persistence.ConfigurationPersistenceException: JBAS014676: Failed to parse configuration
	at org.jboss.as.controller.persistence.XmlConfigurationPersister.load(XmlConfigurationPersister.java:141) [jboss-as-controller-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]
	at org.jboss.as.server.ServerService.boot(ServerService.java:305) [jboss-as-server-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]
	at org.jboss.as.controller.AbstractControllerService$1.run(AbstractControllerService.java:185) [jboss-as-controller-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]
	at java.lang.Thread.run(Thread.java:680) [classes.jar:1.6.0_37]
Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[199,21]
Message: JBAS014697: Invalid value '${core-threads:50}' for attribute 'count'
	at org.jboss.as.controller.parsing.ParseUtils.invalidAttributeValue(ParseUtils.java:114) [jboss-as-controller-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]
	at org.jboss.as.threads.ThreadsParser.parseScaledCount(ThreadsParser.java:820)
	at org.jboss.as.threads.ThreadsParser.parseCount(ThreadsParser.java:798)
	at org.jboss.as.threads.ThreadsParser.parseBoundedQueueThreadPool1_1(ThreadsParser.java:434)
	at org.jboss.as.threads.ThreadsParser.parseBlockingBoundedQueueThreadPool(ThreadsParser.java:259)
	at org.jboss.as.connector.subsystems.jca.JcaExtension$ConnectorSubsystemParser.parseWorkManager(JcaExtension.java:423)

{noformat}
                
> Inconsistent expression support
> -------------------------------
>
>                 Key: AS7-6154
>                 URL: https://issues.jboss.org/browse/AS7-6154
>             Project: Application Server 7
>          Issue Type: Feature Request
>          Components: Domain Management
>            Reporter: Heiko Braun
>            Assignee: Brian Stansberry
>             Fix For: 7.2.0.CR1
>
>
> Although some subsystem declare support for expression on certain attributes, they actually don't support it.
> As en example see datasources > pool > max-pool-size.
> The DMR description says it supports expressions on this attribute:
> {noformat}
>  "max-pool-size" => {
>                 "type" => INT,
>                 "description" => "The max-pool-size element specifies the maximum number of connections for a pool. No more connections will be created in each sub-pool",
>                 "expressions-allowed" => true,
>                 "nillable" => true,
>                 "default" => 20,
>                 "access-type" => "read-write",
>                 "storage" => "configuration",
>                 "restart-required" => "no-services"
>             },
> {noformat}
> But then writing an expression value yields an exception
> {noformat}
> Request
> [ERROR] {
> [ERROR]     "operation" => "composite",
> [ERROR]     "address" => [],
> [ERROR]     "steps" => [{
> [ERROR]         "address" => [
> [ERROR]             ("profile" => "full"),
> [ERROR]             ("subsystem" => "datasources"),
> [ERROR]             ("data-source" => "ExampleDS")
> [ERROR]         ],
> [ERROR]         "operation" => "write-attribute",
> [ERROR]         "name" => "max-pool-size",
> [ERROR]         "value" => expression "${pool:15}"
> [ERROR]     }]
> [ERROR] }
> {noformat}
> {noformat}
> 08:48:23,965 DEBUG [org.jboss.as.controller.management-operation] (HttpManagementService-threads - 5) JBAS014616: Operation ("write-attribute") failed - address: ([
>     ("subsystem" => "datasources"),
>     ("data-source" => "ExampleDS")
> ]) - failure description: "JBAS014688: Wrong type for value. Expected [INT] but was EXPRESSION"
> {noformat}

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