net.liftweb.json.JsonAST

JValue

class JValue extends Diffable

Data type for Json AST.

Attributes
sealed abstract
Linear Supertypes
Diffable, AnyRef, Any
Known Subclasses
JArray, JBool, JDouble, JField, JInt, JNothing, JNull, JObject, JString
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Inherited
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  1. JValue
  2. Diffable
  3. AnyRef
  4. Any
Visibility
  1. Public
  2. All

Instance Constructors

  1. new JValue ()

Type Members

  1. type Values

    Attributes
    abstract

Abstract Value Members

  1. def values : Values

    Return unboxed values from JSON

    Return unboxed values from JSON

    Example: 

    JObject(JField("name", JString("joe")) :: Nil).values == Map("name" -> "joe")

    Attributes
    abstract

Concrete Value Members

  1. def != (arg0: AnyRef): Boolean

    Attributes
    final
    Definition Classes
    AnyRef

  2. def != (arg0: Any): Boolean

    Attributes
    final
    Definition Classes
    Any

  3. def ## (): Int

    Attributes
    final
    Definition Classes
    AnyRef → Any

  4. def ++ (other: JValue): JValue

    Concatenate with another JSON.

    Concatenate with another JSON. This is a concatenation monoid: (JValue, ++, JNothing)

    Example: 

    JArray(JInt(1) :: JInt(2) :: Nil) ++ JArray(JInt(3) :: Nil) ==
JArray(List(JInt(1), JInt(2), JInt(3)))

  5. def == (arg0: AnyRef): Boolean

    Attributes
    final
    Definition Classes
    AnyRef

  6. def == (arg0: Any): Boolean

    Attributes
    final
    Definition Classes
    Any

  7. def \ [A <: JValue] (clazz: Class[A]): List[Values]

    XPath-like expression to query JSON fields by type.

    XPath-like expression to query JSON fields by type. Matches only fields on next level.

    Example: 

    json \ classOf[JInt]

  8. def \ (nameToFind: String): JValue

    XPath-like expression to query JSON fields by name.

    XPath-like expression to query JSON fields by name. Matches only fields on next level.

    Example: 

    json \ "name"

  9. def \\ [A <: JValue] (clazz: Class[A]): List[Values]

    XPath-like expression to query JSON fields by type.

    XPath-like expression to query JSON fields by type. Returns all matching fields.

    Example: 

    json \\ classOf[JInt]

  10. def \\ (nameToFind: String): JValue

    XPath-like expression to query JSON fields by name.

    XPath-like expression to query JSON fields by name. Returns all matching fields.

    Example: 

    json \\ "name"

  11. def apply (i: Int): JValue

    Return nth element from JSON.

    Return nth element from JSON. Meaningful only to JArray, JObject and JField. Returns JNothing for other types.

    Example: 

    JArray(JInt(1) :: JInt(2) :: Nil)(1) == JInt(2)

  12. def asInstanceOf [T0] : T0

    Attributes
    final
    Definition Classes
    Any

  13. def children : List[JValue]

    Return direct child elements.

    Return direct child elements.

    Example: 

    JArray(JInt(1) :: JInt(2) :: Nil).children == List(JInt(1), JInt(2))

  14. def clone (): AnyRef

    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws()

  15. def diff (other: JValue): Diff

    Return a diff.

    Return a diff.

    Definition Classes
    Diffable
    See also

    net.liftweb.json.Diff#diff

  16. def eq (arg0: AnyRef): Boolean

    Attributes
    final
    Definition Classes
    AnyRef

  17. def equals (arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  18. def extract [A] (implicit formats: Formats, mf: Manifest[A]): A

    Extract a value from a JSON.

    Extract a value from a JSON.

    Value can be:

    • case class
    • primitive (String, Boolean, Date, etc.)
    • supported collection type (List, Seq, Map[String, _], Set)
    • any type which has a configured custom deserializer

    Example: 

    case class Person(name: String)
JObject(JField("name", JString("joe")) :: Nil).extract[Person] == Person("joe")

  19. def extractOpt [A] (implicit formats: Formats, mf: Manifest[A]): Option[A]

    Extract a value from a JSON.

    Extract a value from a JSON.

    Value can be:

    • case class
    • primitive (String, Boolean, Date, etc.)
    • supported collection type (List, Seq, Map[String, _], Set)
    • any type which has a configured custom deserializer

    Example: 

    case class Person(name: String)
JObject(JField("name", JString("joe")) :: Nil).extractOpt[Person] == Some(Person("joe"))

  20. def extractOrElse [A] (default: ⇒ A)(implicit formats: Formats, mf: Manifest[A]): A

    Extract a value from a JSON using a default value.

    Extract a value from a JSON using a default value.

    Value can be:

    • case class
    • primitive (String, Boolean, Date, etc.)
    • supported collection type (List, Seq, Map[String, _], Set)
    • any type which has a configured custom deserializer

    Example: 

    case class Person(name: String)
JNothing.extractOrElse(Person("joe")) == Person("joe")

  21. def filter (p: (JValue) ⇒ Boolean): List[JValue]

    Return a List of all elements which matches the given predicate.

    Return a List of all elements which matches the given predicate.

    Example: 

    JArray(JInt(1) :: JInt(2) :: Nil) filter { case JInt(x) => x > 1; case _ => false }

  22. def finalize (): Unit

    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws()

  23. def find (p: (JValue) ⇒ Boolean): Option[JValue]

    Return the first element from JSON which matches the given predicate.

    Return the first element from JSON which matches the given predicate.

    Example: 

    JArray(JInt(1) :: JInt(2) :: Nil) find { _ == JInt(2) } == Some(JInt(2))

  24. def fold [A] (z: A)(f: (A, JValue) ⇒ A): A

    Return a combined value by folding over JSON by applying a function f for each element.

    Return a combined value by folding over JSON by applying a function f for each element. The initial value is z.

  25. def getClass (): java.lang.Class[_]

    Attributes
    final
    Definition Classes
    AnyRef → Any

  26. def hashCode (): Int

    Definition Classes
    AnyRef → Any

  27. def isInstanceOf [T0] : Boolean

    Attributes
    final
    Definition Classes
    Any

  28. def map (f: (JValue) ⇒ JValue): JValue

    Return a new JValue resulting from applying the given function f to each element in JSON.

    Return a new JValue resulting from applying the given function f to each element in JSON.

    Example: 

    JArray(JInt(1) :: JInt(2) :: Nil) map { case JInt(x) => JInt(x+1); case x => x }

  29. def ne (arg0: AnyRef): Boolean

    Attributes
    final
    Definition Classes
    AnyRef

  30. def notify (): Unit

    Attributes
    final
    Definition Classes
    AnyRef

  31. def notifyAll (): Unit

    Attributes
    final
    Definition Classes
    AnyRef

  32. def remove (p: (JValue) ⇒ Boolean): JValue

    Return a JSON where all elements matching the given predicate are removed.

    Return a JSON where all elements matching the given predicate are removed.

    Example: 

    JArray(JInt(1) :: JInt(2) :: JNull :: Nil) remove { _ == JNull }

  33. def replace (l: List[String], replacement: JValue): JValue

    Return a new JValue resulting from replacing the value at the specified field path with the replacement value provided.

    Return a new JValue resulting from replacing the value at the specified field path with the replacement value provided. This has no effect if the path is empty or if the value is not a JObject instance.

    Example: 

    JObject(List(JField("foo", JObject(List(JField("bar", JInt(1))))))).replace("foo" :: "bar" :: Nil, JString("baz"))
// returns JObject(List(JField("foo", JObject(List(JField("bar", JString("baz")))))))

  34. def synchronized [T0] (arg0: ⇒ T0): T0

    Attributes
    final
    Definition Classes
    AnyRef

  35. def toString (): String

    Definition Classes
    AnyRef → Any

  36. def transform (f: PartialFunction[JValue, JValue]): JValue

    Return a new JValue resulting from applying the given partial function f to each element in JSON.

    Return a new JValue resulting from applying the given partial function f to each element in JSON.

    Example: 

    JArray(JInt(1) :: JInt(2) :: Nil) transform { case JInt(x) => JInt(x+1) }

  37. def wait (): Unit

    Attributes
    final
    Definition Classes
    AnyRef
    Annotations
    @throws()

  38. def wait (arg0: Long, arg1: Int): Unit

    Attributes
    final
    Definition Classes
    AnyRef
    Annotations
    @throws()

  39. def wait (arg0: Long): Unit

    Attributes
    final
    Definition Classes
    AnyRef
    Annotations
    @throws()

Inherited from Diffable

Inherited from AnyRef

Inherited from Any