ForeignKeys (Hibernate Core Aggregator 3.6.10.Final API)

java.lang.Object
- org.hibernate.engine.ForeignKeys

```
public final class ForeignKeys
extends Object
```
Algorithms related to foreign key constraint transparency

Author:

Gavin King

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static class ForeignKeys.Nullifier

Nested Classes
Modifier and Type	Class and Description
`static class`	`ForeignKeys.Nullifier`

Method Summary

Methods
Modifier and Type	Method and Description
`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.
`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.
`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.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - 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.
    
    Throws:
    
    HibernateException
  - 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.
    
    Throws:
    
    HibernateException
  - 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).
    
    Throws:
    
    HibernateException

Class ForeignKeys

Nested Class Summary

Method Summary

Methods inherited from class java.lang.Object

Method Detail

isNotTransient

isTransient

getEntityIdentifierIfNotUnsaved