javax.persistence.criteria

Enum JoinType

java.lang.Object

java.lang.Enum<JoinType>

javax.persistence.criteria.JoinType

All Implemented Interfaces:

Serializable, Comparable<JoinType>

public enum JoinType
extends Enum<JoinType>

Defines the three types of joins. Right outer joins and right outer fetch joins are not required to be supported in Java Persistence 2.0. Applications that use RIGHT join types will not be portable.

Since:

Java Persistence 2.0

Enum Constant Summary

Enum Constants

Enum Constant and Description
INNER Inner join.
LEFT Left outer join.
RIGHT Right outer join.

Method Summary

Methods

Modifier and Type	Method and Description
static JoinType	valueOf(String name) Returns the enum constant of this type with the specified name.
static JoinType[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

INNER

public static final JoinType INNER

Inner join.

LEFT

public static final JoinType LEFT

Left outer join.

RIGHT

public static final JoinType RIGHT

Right outer join.

Method Detail

values

public static JoinType[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (JoinType c : JoinType.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static JoinType valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null