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192 words

javax.persistence.criteria.JoinType - JPA enum

javax.persistence.criteria
Enum JoinType

java.lang.Object
    java.lang.Enum<javax.persistence.criteria.JoinType>
        javax.persistence.criteria.JoinType
Implemented Interfaces:
Serializable, Comparable<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:
JPA 2.0
JoinType INNER
Inner join.
Inner join.
Since:
JPA 2.0
JoinType LEFT
Left outer join.
Left outer join.
Since:
JPA 2.0
JoinType RIGHT
Right outer join.
Right outer join.
Since:
JPA 2.0
JoinType valueOf(String name)

Returns the enum constant of this type with the specified 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.

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

JoinType[] values()

Returns an array containing the constants of this enum type.

Returns an array containing the constants of this enum type.

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

This documentation page is derived (with some adjustments) from the open source JPA 2 RI (EclipseLink)
and is available under the terms of the Eclipse Public License, v. 1.0 and Eclipse Distribution License, v. 1.0.
Object Relational Mapping (ORM) JPA 2 providers include Hibernate, EclipseLink, TopLink, OpenJPA and DataNucleus.
Object DB is not an ORM JPA implementation but an Object Database for Java with built in JPA 2 support.