About primary key

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JDO Doc
5

PrimaryKey.columns

Annotation Element javax.jdo.annotations.PrimaryKey Column[] columns The column(s) for the primary key Returns: the column(s) for the primary key Default value: {} Since: JDO 2.1
JDO Doc
5

PrimaryKey.name

Annotation Element javax.jdo.annotations.PrimaryKey String name Name of the primary key constraint Returns: the name of the primary key constraint Default value: "" Since: JDO 2.1
JPA Doc
5

TableGenerator.pkColumnValue

Annotation Element javax.persistence.TableGenerator String pkColumnValue (Optional) The primary key value in the generator table that distinguishes this set of generated values from others that may be stored in the table. Defaults to a provider-chosen value to store in the primary key column of the generator table Default value: "" Since: JPA 1.0
JDO Doc
5

javax.jdo.annotations.PersistenceCapable

objectIdClass Primary key class when using application identity and using own PK. Primary key class
Forum
5

Activation key causes database to not start

. We still cannot start ObjectDB if we add the activation key in objectdb.conf. This is the ObjectDB log ... it seems that a wrong license key (for ObjectDB 1.x rather than for ObjectDB 2.x) was sent to you. Sorry about that. A new license key was sent to you now to replace the wrong license key. It's ok. Thank
Manual
5

SSL Configuration

private key and its corresponding public key (the SSL protocol is based on the RSA algorithm ... . This file is generated from the Keystore file by omitting the private key (it still contains the general information and the public key). You can generate these files using the JDK keytool utility
Forum
5

Foreign key constraint issue

Hi, I'm trying to create two tables (Parent and Child) with a foreign key constraint from Child ... one specific case that foreign key constraint doesn't apply and I can't figure how to make it work ... get deleted, whereas I'd want to remove all orphaned child entities (as with a foreign key constraint
Issue
5

JPA Composite Key make Object Db throws "Unexpected exception (Error 990)"

Hello Object Db community :) I am using this wonderful library and I caught a strange exception while testing the "composite key" feature in JPA. Let's see what I am doing : @Entity public class ... embedded Id ) key with an enum type. Here is the code : package test; import java.util.*; import
Forum
5

KEY() / VALUE() not recognized in JPQL??

Hi! Explorer says "unexpected token" on KEY(..: SELECT FROM individual.IndividualContact $1 LEFT OUTER JOIN $1.profile.title.name m WHERE (KEY(m) = 'deu' AND VALUE(m) LIKE '%Dr%') profile = embedded entity title = referenced entity name = Map   thanks, Alex Yes
Issue
5

Page #9 entry 0 (key 'bjjl') has 75 extra bytes / Unexpected last index ID: -119 (expected -116)

------------------- [1] Page #9 entry 0 has unexpected object format [2] Page #9 entry 0 (key 'bjjl') has 75 extra ... ------------------- [1] Page #3 entry 0 has unexpected object format [2] Page #3 entry 0 (key 'guest') has 11 extra bytes