Allow JoinTable & JoinColumns to map oneToOne relationship using a join table
with multiple columns.
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Key: OPENJPA-725
URL: https://issues.apache.org/jira/browse/OPENJPA-725
Project: OpenJPA
Issue Type: New Feature
Reporter: brian yoder
Priority: Minor
When trying to map a oneToOne relationship using a JoinTable it complains:
[9/16/08 9:29:59:932 PDT] 00000029 SystemErr R
<openjpa-1.0.1-r420667:592145 fatal user error>
org.apache.openjpa.persistence.ArgumentException: You have supplied columns for
"com.sscims.im.entity.Ecase.sourceEmail<element:class java.lang.Object>", but
this mapping cannot have columns in this context.
Here is an example from Hibernate of what I am trying to do:
@OneToOne
@JoinTable(
name="ct_email_msg",
joinColumns={
@JoinColumn(name="email_entity_type",
referencedColumnName="'ecaseEmail'"),
@JoinColumn(name="email_entity_id",
referencedColumnName="ecase_id"),
@JoinColumn(name="email_type", referencedColumnName="'" +
CtEmailMsg.TYPE_RECEIVED + "'")
},
[EMAIL PROTECTED](name="entity_attachment_id",
referencedColumnName="entity_attachment_id")
)
public CtEmailMsg getSourceEmail() {
return sourceEmail;
}
Basically I have a join table (reference table) that has a three column primary
key. But it has a oneToOne relationship to another object, so I need to be
able to join to it from my parent entity.
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