# Class EJBQLAggregateColumn

java.lang.Object
org.apache.cayenne.ejbql.parser.SimpleNode
org.apache.cayenne.ejbql.parser.EJBQLAggregateColumn

All Implemented Interfaces:
  `Serializable, EJBQLExpression, Node`

Direct Known Subclasses:
  `EJBQLAverage, EJBQLCount, EJBQLMax, EJBQLMin, EJBQLSum`

public abstract class EJBQLAggregateColumn extends SimpleNode
An aggregate column expression.

Since:
  3.0
See Also:
  - Serialized Form

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `EJBQLAggregateColumn(int id)`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `abstract String`
  `getFunction()`
  `abstract String`
  `getJavaType(String pathType)`

  ### Methods inherited from class SimpleNode

  `getChild, getChildrenCount, getName, getText, isNegated, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, setText, toString, visit, visitChild, visitNode`

  ### Methods inherited from class Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- ## Constructor Details

  - ### EJBQLAggregateColumn

    public EJBQLAggregateColumn(int id)

- ## Method Details

  - ### getFunction

    public abstract String getFunction()

  - ### getJavaType

    public abstract String getJavaType(String pathType)