org.hibernate.sql.ast.common
Class JoinType

java.lang.Object
  org.hibernate.sql.ast.common.JoinType

All Implemented Interfaces:

Serializable

public class JoinType
extends Object
implements Serializable

Represents a canonical join type.

Note that currently HQL really only supports inner and left outer joins (though cross joins can also be achieved). This is because joins in HQL are always defined in relation to a mapped association. However, when we start allowing users to specify ad-hoc joins this may need to change to allow the full spectrum of join types. Thus the others are provided here currently just for completeness and for future expansion.

Author:

Steve Ebersole

See Also:

Serialized Form

Field Summary

static JoinType	CROSS Represents a cross join (aka a cartesian product).
static JoinType	FULL Represents a full join.
static JoinType	INNER Represents an inner join.
static JoinType	LEFT Represents a left outer join.
static JoinType	RIGHT Represents a right outer join.

Method Summary

String

toString()

Methods inherited from class java.lang.Object

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

Field Detail

INNER

public static final JoinType INNER

Represents an inner join.

LEFT

public static final JoinType LEFT

Represents a left outer join.

RIGHT

public static final JoinType RIGHT

Represents a right outer join.

CROSS

public static final JoinType CROSS

Represents a cross join (aka a cartesian product).

FULL

public static final JoinType FULL

Represents a full join.

Method Detail

toString

public String toString()

Overrides:

toString in class Object