org.hibernate.engine
Class ForeignKeys
java.lang.Object
org.hibernate.engine.ForeignKeys
public final class ForeignKeys
extends java.lang.Object
Algorithms related to foreign key constraint transparency
static Serializable | getEntityIdentifierIfNotUnsaved(String entityName, Object object, SessionImplementor session) - Return the identifier of the persistent or transient object, or throw
an exception if the instance is "unsaved"
Used by OneToOneType and ManyToOneType to determine what id value should
be used for an object that may or may not be associated with the session.
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static boolean | isNotTransient(String entityName, Object entity, Boolean assumed, SessionImplementor session) - Is this instance persistent or detached?
If assumed is non-null, don't hit the database to make the
determination, instead assume that value; the client code must be
prepared to "recover" in the case that this assumed result is incorrect.
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static boolean | isTransient(String entityName, Object entity, Boolean assumed, SessionImplementor session) - Is this instance, which we know is not persistent, actually transient?
If assumed is non-null, don't hit the database to make the
determination, instead assume that value; the client code must be
prepared to "recover" in the case that this assumed result is incorrect.
|
getEntityIdentifierIfNotUnsaved
public static Serializable getEntityIdentifierIfNotUnsaved(String entityName,
Object object,
SessionImplementor session)
throws HibernateException
Return the identifier of the persistent or transient object, or throw
an exception if the instance is "unsaved"
Used by OneToOneType and ManyToOneType to determine what id value should
be used for an object that may or may not be associated with the session.
This does a "best guess" using any/all info available to use (not just the
EntityEntry).
isNotTransient
public static boolean isNotTransient(String entityName,
Object entity,
Boolean assumed,
SessionImplementor session)
throws HibernateException
Is this instance persistent or detached?
If assumed is non-null, don't hit the database to make the
determination, instead assume that value; the client code must be
prepared to "recover" in the case that this assumed result is incorrect.
isTransient
public static boolean isTransient(String entityName,
Object entity,
Boolean assumed,
SessionImplementor session)
throws HibernateException
Is this instance, which we know is not persistent, actually transient?
If assumed is non-null, don't hit the database to make the
determination, instead assume that value; the client code must be
prepared to "recover" in the case that this assumed result is incorrect.