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From "Daniel Gajdos (JIRA)" <j...@apache.org>
Subject [jira] Created: (OPENJPA-177) When using NOT NULL constraint on foreign key it is not possible to use CascadeType.ALL and GeneratedId
Date Wed, 21 Mar 2007 11:20:32 GMT
When using NOT NULL constraint on foreign key it is not possible to use CascadeType.ALL and
GeneratedId
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                 Key: OPENJPA-177
                 URL: https://issues.apache.org/jira/browse/OPENJPA-177
             Project: OpenJPA
          Issue Type: Bug
          Components: jpa
    Affects Versions: 0.9.6
         Environment: Windows XP, IBM 32-bit SDK 5.0, WebSphere 6.1
            Reporter: Daniel Gajdos


When using on entity Application
	@OneToOne(cascade = CascadeType.ALL)
	@JoinColumn(name = "C_PERSON_ID", nullable=false)
	@ForeignKey
	private Person person;
and on entity Person using generated ID, it fails on inserting Application because of performing
db actions in this order:
INSERT INTO T_APPLICATION (C_ID, C_APPLICATION_NUMBER, C_APPLIED_DATE, C_STATUS) VALUES (:1,
:2, :3, :4) - here it tries to insert null value as 		C_PERSON_ID, which is not permited because
of nullable=false declaration. This declaration creates NOT NULL constraint on C_PERSON_ID.
INSERT INTO NSVISP.T_PERSON (C_ID, C_BIRTH_DATE, C_FIRST_NAME, C_LAST_NAME) VALUES (:1, :2,
:3, :4)
UPDATE NSVISP.T_APPLICATION SET C_PERSON_ID = :1 WHERE C_ID = :2
Error reported from DB:
org.apache.openjpa.lib.jdbc.ReportingSQLException: ORA-01400: cannot insert NULL into ("T_APPLICATION"."C_PERSON_ID")

Is there any chance to change the order in which this operations are executed? On this type
of constraint we have to insert Person before inserting Application and include the generated
Person Id into insert statement for Application. Otherwise we have to deffer the NOT NULL
constraint which can be dangerous and it is not defered initialy.

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