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10.4. Displaying Pretty-Print Output
The JBoss ON CLI has a special class that formats JBoss ON information into table-style output. This class (
TabularWriter) is implicit for all CLI commands, so almost all output is properly formatted automatically. This class is also available as an implicit variable called pretty, which is useful when writing scripts.
For example:
rhqadmin@localhost:7080$ criteria = ResourceCriteria()
rhqadmin@localhost:7080$ criteria.addFilterResourceTypeName('service-alpha')
rhqadmin@localhost:7080$ criteria.addFilterParentResourceName('server-omega-0')
rhqadmin@localhost:7080$ resources = ResourceManager.findResourcesByCriteria(criteria)
id name version resourceType
------------------------------------------------
11373 service-alpha-8 1.0 service-alpha
11374 service-alpha-1 1.0 service-alpha
11375 service-alpha-0 1.0 service-alpha
11376 service-alpha-4 1.0 service-alpha
11377 service-alpha-2 1.0 service-alpha
11378 service-alpha-3 1.0 service-alpha
11379 service-alpha-5 1.0 service-alpha
11380 service-alpha-9 1.0 service-alpha
11381 service-alpha-6 1.0 service-alpha
11382 service-alpha-7 1.0 service-alpha
10 rowspretty formats any object defined in the domain (org.rhq.core.domain) package.
Simply printing the output is much less readable:
rhqadmin@localhost:7080$ println(resources)
PageList[Resource[id=11373, type=service-alpha, key=service-alpha-8, name=service-alpha-8, version=1.0],
Resource[id=11374, type=service-alpha, key=service-alpha-1, name=service-alpha-1, version=1.0],
.... 8< ....
For a single object,
pretty checks for the summary information (@Summary), so that it only displays a subset of information. It then prints the summary information for the single object as a formatted list. For example:
rhqadmin@localhost:7080$ pretty.print(resources.get(0))
Resource:
id: 11373
name: service-alpha-8
version: 1.0
resourceType: service-alpha
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