Module com.darkcollective.relix.ast
Package com.darkcollective.relix.ast

Record Class ProjectedAttribute

java.lang.Object
java.lang.Record
com.darkcollective.relix.ast.ProjectedAttribute
public record ProjectedAttribute(Operand expression, Optional<String> alias) extends Record
Represents a projected attribute in a projection operation. An attribute can have an optional alias using the → operator. Examples: - Simple attribute: id - Aliased simple attribute: id → user_id - Aliased arithmetic expression: price * 1.05 → adjusted_price

  • Constructor Details

    • ProjectedAttribute

      public ProjectedAttribute(Operand expression, Optional<String> alias)
      Creates an instance of a ProjectedAttribute record class.
      Parameters:
      expression - the value for the expression record component
      alias - the value for the alias record component

  • Method Details

    • simple

      public static ProjectedAttribute simple(Operand expression)
      Creates a projected attribute without an alias.

    • aliased

      public static ProjectedAttribute aliased(Operand expression, String alias)
      Creates a projected attribute with an alias.

    • toString

      public final String toString()
      Returns a string representation of this record class. The representation contains the name of the class, followed by the name and value of each of the record components.
      Specified by:
      toString in class Record
      Returns:
      a string representation of this object

    • hashCode

      public final int hashCode()
      Returns a hash code value for this object. The value is derived from the hash code of each of the record components.
      Specified by:
      hashCode in class Record
      Returns:
      a hash code value for this object

    • equals

      public final boolean equals(Object o)
      Indicates whether some other object is "equal to" this one. The objects are equal if the other object is of the same class and if all the record components are equal. All components in this record class are compared with Objects::equals(Object,Object).
      Specified by:
      equals in class Record
      Parameters:
      o - the object with which to compare
      Returns:
      true if this object is the same as the o argument; false otherwise.

    • expression

      public Operand expression()
      Returns the value of the expression record component.
      Returns:
      the value of the expression record component

    • alias

      public Optional<String> alias()
      Returns the value of the alias record component.
      Returns:
      the value of the alias record component