Package com.onec.query

Record Class Select

java.lang.Object
java.lang.Record
com.onec.query.Select
public record Select(Path path, Select.Agg agg, String alias) extends Record
One item in the SELECT list: a Path (plain column or ref-navigation), optionally wrapped in an aggregate, with an output alias used as the result-Row key and the fetchInto property name.

path may be null only for COUNT(*).

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Class
    Description
    static enum 
    Select.Agg
     

  • Constructor Summary

    Constructors
    Constructor
    Description
    Select(Path path, Select.Agg agg, String alias)
    Creates an instance of a Select record class.

  • Method Summary

    Modifier and Type
    Method
    Description
    Select.Agg
    agg()
    Returns the value of the agg record component.
    String
    alias()
    Returns the value of the alias record component.
    final boolean
    equals(Object o)
    Indicates whether some other object is "equal to" this one.
    final int
    hashCode()
    Returns a hash code value for this object.
    String
    outputName()
    Column name in the result set: explicit alias, else derived from the path/aggregate.
    Path
    path()
    Returns the value of the path record component.
    final String
    toString()
    Returns a string representation of this record class.

    Methods inherited from class java.lang.Object

    clone, finalize, getClass, notify, notifyAll, wait, wait, wait

  • Constructor Details

    • Select

      public Select(Path path, Select.Agg agg, String alias)
      Creates an instance of a Select record class.
      Parameters:
      path - the value for the path record component
      agg - the value for the agg record component
      alias - the value for the alias record component

  • Method Details

    • outputName

      public String outputName()
      Column name in the result set: explicit alias, else derived from the path/aggregate.

    • 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.

    • path

      public Path path()
      Returns the value of the path record component.
      Returns:
      the value of the path record component

    • agg

      public Select.Agg agg()
      Returns the value of the agg record component.
      Returns:
      the value of the agg record component

    • alias

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