ScalaReflection
Related Docs:
trait ScalaReflection
| package catalyst
Returns a Sequence of attributes for the given case class type.
Returns a Sequence of attributes for the given case class type.
Returns an expression that can be used to construct an object of type T given an input
row with a compatible schema.
Returns an expression that can be used to construct an object of type T given an input
row with a compatible schema. Fields of the row will be extracted using UnresolvedAttributes
of the same name as the constructor arguments. Nested classes will have their fields accessed
using UnresolvedExtractValue.
When used on a primitive type, the constructor will instead default to extracting the value from ordinal 0 (since there are no names to map to). The actual location can be moved by calling resolve/bind with a new schema.
Returns the Spark SQL DataType for a given scala type.
Returns the Spark SQL DataType for a given scala type. Where this is not an exact mapping to a native type, an ObjectType is returned. Special handling is also used for Arrays including those that hold primitive types.
Unlike schemaFor, this function doesn't do any massaging of types into the Spark SQL type
system. As a result, ObjectType will be returned for things like boxed Integers
Returns expressions for extracting all the fields from the given type.
Returns expressions for extracting all the fields from the given type.
If the given type is not supported, i.e. there is no encoder can be built for this type,
an UnsupportedOperationException will be thrown with detailed error message to explain
the type path walked so far and which class we are not supporting.
There are 4 kinds of type path:
* the root type: root class: "abc.xyz.MyClass"
* the value type of Option: option value class: "abc.xyz.MyClass"
* the element type of Array or Seq: array element class: "abc.xyz.MyClass"
* the field of Product: field (class: "abc.xyz.MyClass", name: "myField")
Returns the full class name for a type.
Returns the full class name for a type.
Returns classes of input parameters of scala function object.
Returns classes of input parameters of scala function object.
Returns true if the value of this data type is same between internal and external.
Return the Scala Type for T in the current classloader mirror.
Return the Scala Type for T in the current classloader mirror.
Use this method instead of the convenience method universe.typeOf, which
assumes that all types can be found in the classloader that loaded scala-reflect classes.
That's not necessarily the case when running using Eclipse launchers or even
Sbt console or test (without fork := true).
SPARK-5281
The mirror used to access types in the universe
The mirror used to access types in the universe
Returns a catalyst DataType and its nullability for the given Scala Type using reflection.
Returns a catalyst DataType and its nullability for the given Scala Type using reflection.
Returns a catalyst DataType and its nullability for the given Scala Type using reflection.
Returns a catalyst DataType and its nullability for the given Scala Type using reflection.
Returns a catalyst DataType and its nullability for the given Scala Type using reflection.
Returns a catalyst DataType and its nullability for the given Scala Type using reflection.
Unlike schemaFor, this method won't throw exception for un-supported type, it will return
NullType silently instead.
The universe we work in (runtime or macro)
The universe we work in (runtime or macro)
A default version of ScalaReflection that uses the runtime universe.