Hi Andrus I this is the content of my DataMap XML file
<?xml version="1.0" encoding="utf-8"?> <data-map xmlns="http://cayenne.apache.org/schema/3.0/modelMap"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://cayenne.apache.org/schema/3.0/modelMap http://cayenne.apache.org/schema/3.0/modelMap.xsd"; project-version="3.0.0.1"> <property name="defaultPackage" value="org.example.cayenne.persistent"/> <db-entity name="BOOK"> <db-attribute name="AUTHOR" type="VARCHAR" length="200"/> <db-attribute name="BOOK_ID" type="INTEGER" isPrimaryKey="true" isMandatory="true"/> <db-attribute name="TITLE" type="VARCHAR" length="200"/> </db-entity> <db-entity name="LOAN"> <db-attribute name="DATE" type="DATE"/> <db-attribute name="LOAN_BOOK_ID" type="INTEGER"/> <db-attribute name="LOAN_ID" type="INTEGER" isPrimaryKey="true" isMandatory="true"/> <db-attribute name="LOAN_STU_ID" type="INTEGER"/> </db-entity> <db-entity name="STUDENT"> <db-attribute name="MAJOR" type="VARCHAR" length="200"/> <db-attribute name="NAME" type="VARCHAR" length="200"/> <db-attribute name="STUDENT_ID" type="INTEGER" isPrimaryKey="true" isMandatory="true"/> </db-entity> <obj-entity name="Book" className="org.example.cayenne.persistent.Book" dbEntityName="BOOK"> <obj-attribute name="author" type="java.lang.String" db-attribute-path="AUTHOR"/> <obj-attribute name="title" type="java.lang.String" db-attribute-path="TITLE"/> </obj-entity> <obj-entity name="Loan" className="org.example.cayenne.persistent.Loan" dbEntityName="LOAN"> <obj-attribute name="date" type="java.util.Date" db-attribute-path="DATE"/> </obj-entity> <obj-entity name="Student" className="org.example.cayenne.persistent.Student" dbEntityName="STUDENT"> <obj-attribute name="major" type="java.lang.String" db-attribute-path="MAJOR"/> <obj-attribute name="name" type="java.lang.String" db-attribute-path="NAME"/> </obj-entity> <db-relationship name="loans" source="BOOK" target="LOAN" toMany="true"> <db-attribute-pair source="BOOK_ID" target="LOAN_BOOK_ID"/> </db-relationship> <db-relationship name="book" source="LOAN" target="BOOK" toMany="false"> <db-attribute-pair source="LOAN_BOOK_ID" target="BOOK_ID"/> </db-relationship> <db-relationship name="student" source="LOAN" target="STUDENT" toMany="false"> <db-attribute-pair source="LOAN_STU_ID" target="STUDENT_ID"/> </db-relationship> <db-relationship name="loans" source="STUDENT" target="LOAN" toMany="true"> <db-attribute-pair source="STUDENT_ID" target="LOAN_STU_ID"/> </db-relationship> <obj-relationship name="loans" source="Book" target="Loan" deleteRule="Deny" db-relationship-path="loans"/> <obj-relationship name="book" source="Loan" target="Book" deleteRule="Nullify" db-relationship-path="book"/> <obj-relationship name="student" source="Loan" target="Student" deleteRule="Nullify" db-relationship-path="student"/> <obj-relationship name="loans" source="Student" target="Loan" deleteRule="Deny" db-relationship-path="loans"/> </data-map> I cannot not create instance of Student, Book, and Loan class And I created another project to make sure that I did all mapping correctly but I am getting the same errors Best, Adama On Tue, Apr 3, 2012 at 3:14 AM, Andrus Adamchik <and...@objectstyle.org>wrote: > Check your DataMap XML file (*.map.xml) - is there indeed a mapping for > org.example.cayenne.persistent.Student? > > > On Apr 3, 2012, at 7:55 AM, ADAMA COULIBALY wrote: > > > Hi > > I am new to cayenne and I built my project. I get the following error: > > Exception in thread "main" java.lang.IllegalArgumentException: Class is > not > > mapped with Cayenne: org.example.cayenne.persistent.Student at > > org.apache.cayenne.access.DataContext.newObject(DataContext.java:689) at > > org.example.cayenne.Main.main(Main.java:15) > > I created three different project and I am getting the same error > > > > Best, > > > > Adama > >
