Packages

trait Transform extends Expression

Represents a transform function in the public logical expression API.

For example, the transform date(ts) is used to derive a date value from a timestamp column. The transform name is "date" and its argument is a reference to the "ts" column.

Annotations
@Evolving()
Source
Transform.java
Since

3.0.0

Linear Supertypes
Expression, AnyRef, Any
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Inherited
  1. Transform
  2. Expression
  3. AnyRef
  4. Any
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Visibility
  1. Public
  2. Protected

Abstract Value Members

  1. abstract def arguments(): Array[Expression]

    Returns the arguments passed to the transform function.

  2. abstract def name(): String

    Returns the transform function name.

Concrete Value Members

  1. def children(): Array[Expression]

    Returns an array of the children of this node.

    Returns an array of the children of this node. Children should not change.

    Definition Classes
    Transform → Expression
    Annotations
    @Override()
  2. def describe(): String

    Format the expression as a human readable SQL-like string.

    Format the expression as a human readable SQL-like string.

    Definition Classes
    Expression
  3. def references(): Array[NamedReference]

    List of fields or columns that are referenced by this expression.

    List of fields or columns that are referenced by this expression.

    Definition Classes
    Expression