| Hello Troy,
Am 12.03.2012 um 10:58 schrieb Troy Lumasag: Hello everyone,
I'm new to Webobjects and Wonder and I enjoy it a lot. I'm having a simple insert problem.
Welcome! My DB is Oracle and I have 2 Models(different User) .
My EOModel would look like this:
Model1
URL: jdbc:oracle:thin:@db.test:1521:oracletest
user:OracleConnect
Model2
URL: jdbc:oracle:thin:@db.test:1521:oracletest
user:Oracle
Now I have a Many-To-Many Relationship Teacher(Model1) <-> Student(Model2).
My Code would look like this:
public void save() {
EOEditingContext ec = (ERXEC) ERXEC.newEditingContext();
Teacher teacher = new Teacher();
ec.insertObject(teacher);
teacher.setName(teacherName);
Student student1 = new Student();
Student student2 = new Student();
ec.insertObject(student1);
ec.insertObject(student2);
student1.setName(studentName1);
student2.setName(studentName2);
teacher.addToStudentsRelationship(student1);
teacher.addToStudentsRelationship(student2);
ec.saveChanges();
}
I got this NPE everytime:
NullPointerException
at com.webobjects.eoaccess.EODatabaseContext.primaryKeyForIntermediateRowFromSourceObject(EODatabaseContext.java:4845)
at com.webobjects.eocontrol.EOObjectStoreCoordinator.saveChangesInEditingContext(EOObjectStoreCoordinator.java:373)
at com.webobjects.eocontrol.EOEditingContext.saveChanges(EOEditingContext.java:3192)
at er.extensions.eof.ERXEC._saveChanges(ERXEC.java:1094)
at er.extensions.eof.ERXEC.saveChanges(ERXEC.java:1016)
at your.app.components.Main.save(Main.java:67)
I've never used Oracle but the problem seems to be related to PK generation. I guess the first thing to check would be whether you set the "OraclePlugIn". You can set it in entity modeler (just put "OraclePlugIn" where I have "PostgresqlPlugIn"):
cheers, Fabian
Looks pretty simple but I'm stuck. Thank you in advance!
Regards,
Troy
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