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Java Enterprise Edition (EE)

JoinType


javax.persistence.criteria
Enum JoinType

java.lang.Object
  java.lang.Enum<JoinType>
      javax.persistence.criteria.JoinType
All Implemented Interfaces:
java.io.Serializable, java.lang.Comparable<JoinType>
public enum JoinType
extends java.lang.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
INNER
          Inner join.
LEFT
          Left outer join.
RIGHT
          Right outer join.
 
Method Summary
static JoinType valueOf(java.lang.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(java.lang.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:
java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
java.lang.NullPointerException - if the argument is null


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