Each management resource has an operation named 'query()' to filter resources according to the condition passed by 'selector' and 'where' parameters, however it does not work for complex attributes like: core-service.capability-registry.capabilities, jaxrs.rest-resource-paths, etc.

Proposed improvements:

• Provides the possibility to query resources by specifying value of nested resources

[standalone@localhost:9990 /] /subsystem=security/security-domain=other:query(select=[authentication], where={authentication.login-modules.code=RealmDirect})
{
    "outcome" => "success",
    "result" => .... // omitted result
}

• Provides the possibility to select matched resources only for complex attributes if the matched resources are LIST, like: core-service.capability-registry.capabilities:

So that the following command lists the possible-capabilities with name equal to org.wildfly.data-source instead of listing all:

/core-service=capability-registry:query(select=[possible-capabilities],where={possible-capabilities.name=org.wildfly.data-source})
{
    .... // other headers are omitted
    "name" => "org.wildfly.data-source",
    "dynamic" => true,
    "registration-points" => [
        "/subsystem=datasources/data-source=*",
        "/subsystem=datasources/xa-data-source=*"
    ]
}

• The improved output must follow same format as before so that it won't break anything.

Linked Jiras:

• [WFCORE-2041] Improve query operation for complex attributes
• [WFCORE-2042] Improve query operation for nested child resources