Exception:

Caused by: org.hibernate.HibernateException: Missing column: col1 in schema.Table1
at org.hibernate.mapping.Table.validateColumns(Table.java:277)
at org.hibernate.cfg.Configuration.validateSchema(Configuration.java:1130)
at org.hibernate.tool.hbm2ddl.SchemaValidator.validate(SchemaValidator.java:139)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:359)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1341)
at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:867)


Here is the hibernate mapping.

ClassA Mapping

@Entity
@Table(name = "Table1")
public class ClassA implements Serializable {

private ClassB _classB = null;

@Embedded
@AttributeOverrides({
@AttributeOverride(name = "col1", column = @Column(name = "db_col1")),
@AttributeOverride(name = "col2", column = @Column(name = "db_col2"))
})
public ClassB getClassB() {
return _classB;
}
}


Class B Mapping

@Embeddable
public class ClassB implements Serializable {

private Long col1;
private Long col2;
private String col3;
private String col4;

/**
* @return the col1
*/
@Column(updatable=false,insertable=false)
public Long getCol1() {
return col1;
}

/**
* @return the col1
*/
@Column(updatable=false,insertable=false)
public Long getCol2() {
return col2;
}
... respective setters.
}