Description of problem:
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- Expression is added in the datasource JNDI name attribute as below:
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  <datasource jndi-name="${ds}" pool-name="ExampleDS" enabled="true" use-java-context="true">
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- Value for the expression is passed to the JBoss server during the JBoss startup as below:
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  ./standalone.sh -Dds=java:jboss/datasources/ExampleDS
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- In the server.log file below is the information regarding the datasource.
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  INFO  [org.jboss.as.connector.subsystems.datasources] (MSC service thread 1-3) JBAS010400: Bound data source [${ds}]
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- Test the datasource using the below command and here is the result:
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[standalone@localhost:9999 /] /subsystem=datasources/data-source=ExampleDS:test-connection-in-pool()
{
    "outcome" => "failed",
    "failure-description" => "JBAS010440: failed to invoke operation: JBAS010442: failed to match pool. Check JndiName: java:/${ds}",
    "rolled-back" => true
}
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- Here is the information regarding the JNDI name attribute:
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[standalone@localhost:9999 /] /subsystem=datasources/data-source=ExampleDS:read-resource-description(recursive=true)
{
    "outcome" => "success",
    "result" => {
        	  :
            "jndi-name" => {
                "type" => STRING,
                "description" => "Specifies the JNDI name for the datasource",
                "expressions-allowed" => true,
                "nillable" => false,
                "access-type" => "read-write",
                "storage" => "configuration",
                "restart-required" => "no-services"
            },
		  :
}
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