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package org.json4s   import org.specs2.mutable.Specification import text.Document   object NativeJsonQueryExamples extendsJsonQueryExamples[Document]("Native")with native.JsonMethods object JacksonJsonQueryExamples extendsJsonQueryExamples[JValue]("Jackson")with jackson.JsonMethods   /** * System under specification for JSON Query Examples. */ abstract class JsonQueryExamples[T](mod:String) extends Specificationwith JsonMethods[T] {   (mod+" JSON Query Examples") should { "List of IPs" in { val ips = for { JString(ip)<- json \\"ip" }yield ip ips must_== List("192.168.1.125","192.168.1.126","192.168.1.127","192.168.2.125","192.168.2.126") }   "List of IPs converted to XML" in { val ips = <ips>{for { JString(ip) <- json \\"ip" }yield <ip>{ ip }</ip> }</ips> ips must_== <ips><ip>192.168.1.125</ip><ip>192.168.1.126</ip><ip>192.168.1.127</ip><ip>192.168.2.125</ip><ip>192.168.2.126</ip></ips> }   "List of IPs in cluster2" in { val ips = for { cluster @ JObject(x) <- json \"data_center" if (x contains JField("name",JString("cluster2"))) JString(ip) <- cluster \\ "ip" }yield ip ips must_== List("192.168.2.125","192.168.2.126") }   "Total cpus in data center" in { (for { JInt(x) <- json \\"cpus" }yield x) reduceLeft (_ + _) must_== 40 }   "Servers sorted by uptime" in { case class Server(ip:String, uptime: Long)   val servers = for { JArray(servers) <- json \\ "servers" JObject(server) <- servers JField("ip",JString(ip)) <- server JField("uptime",JInt(uptime)) <- server } yield Server(ip, uptime.longValue)   servers sortWith (_.uptime > _.uptime) must_==List(Server("192.168.1.127",901214), Server("192.168.2.125",453423), Server("192.168.2.126",214312), Server("192.168.1.126",189822), Server("192.168.1.125",150123)) }   "Clusters administered by liza" in { val clusters = for { JObject(cluster) <- json JField("admins",JArray(admins)) <- cluster if admins contains JString("liza") JField("name",JString(name)) <- cluster } yield name   clusters must_== List("cluster2") } }   lazy val json = parse(""" { "data_center": [ { "name": "cluster1", "servers": [ {"ip": "192.168.1.125", "uptime": 150123, "specs": {"cpus": 8, "ram": 2048}}, {"ip": "192.168.1.126", "uptime": 189822, "specs": {"cpus": 16, "ram": 4096}}, {"ip": "192.168.1.127", "uptime": 901214, "specs": {"cpus": 8, "ram": 4096}} ], "links": [ {"href": "http://www.example.com/admin", "name": "admin"}, {"href": "http://www,example.com/home", "name": "home"} ], "admins": ["jim12", "joe", "maddog"] }, { "name": "cluster2", "servers": [ {"ip": "192.168.2.125", "uptime": 453423, "specs": {"cpus": 4, "ram": 2048}}, {"ip": "192.168.2.126", "uptime": 214312, "specs": {"cpus": 4, "ram": 2048}} ], "links": [ {"href": "http://www.example2.com/admin", "name": "admin"}, {"href": "http://www,example2.com/home", "name": "home"} ], "admins": ["joe", "liza"] } ]}