I have a table (that can't be changed)

that is a one to one mapping from multiple entites to a single table

the table has 2 fields

int key1
String info

i have a mapping in table one

@OneToMany(fetch=javax.persistence.FetchType.LAZY, mappedBy="associationsCalendar")
private List associationRelators;


and in table 2

@OneToMany(fetch=javax.persistence.FetchType.LAZY, mappedBy="associationsAdvisory")
private List associationRelators; //Associations



in the end table i have the following relationships.

@ManyToOne(fetch=javax.persistence.FetchType.LAZY, optional=true)
@JoinColumn(name="PRNT_CNTNT_ID", insertable=false, updatable=false, nullable=true)
private Calendar associationsCalendar; //Associations

@ManyToOne(fetch=javax.persistence.FetchType.LAZY, optional=true)
@JoinColumn(name="PRNT_CNTNT_ID", insertable=false, updatable=false, nullable=true)
private Advisory associationsAdvisory; //Associations



I have a web service that is serialising the records, and i only want to serialise the join on the record that actually exists.

i.e. calendar and advisory take their primary keys from the same sequence.

if the reference is for a advisory and i call getAssociationsCalendar() i get

org.hibernate.PropertyAccessException: could not set a field value by reflection setter of .....


I need a way of having the exception not thrown, or a way to get around this issue. I have multiple tables that have the same issue, and am using a library to serialise the objects.

any help will be much appreciated.