// TODO: can this be implemented in a simpler way? is there
// any real value to using the map here as opposed to iterating
// the relationships live?
private EjbRelationshipRole getRoleDescriptor(
String ejbName, String cmrFieldName, boolean opposite) {
Map rels = (HashMap) relationshipRoleMap.get(ejbName);
Iterator iterator = rels.keySet().iterator();
while (iterator.hasNext()) {
EjbRelation rel = (EjbRelation) iterator.next();
EjbRelationshipRole role = (EjbRelationshipRole) rels.get(rel);
EjbRelationshipRole role1 = rel.getEjbRelationshipRole();
EjbRelationshipRole role2 = rel.getEjbRelationshipRole2();
CmrField candidateCmr = role.getCmrField();
if (ejbName.equals(role.getRelationshipRoleSource().getEjbName())
&& (candidateCmr != null)
&& cmrFieldName.equals(candidateCmr.getCmrFieldName())) {
return ((opposite) ? ((role == role1) ? role2 : role1) : role);
} else { // check for self ref relationship
String ejb1 = role1.getRelationshipRoleSource().getEjbName();
if (ejb1.equals(role2.getRelationshipRoleSource().getEjbName()) && ejbName.equals(ejb1)) {
role = ((role == role1) ? role2 : role1);
candidateCmr = role.getCmrField();
if ((candidateCmr != null) && cmrFieldName.equals(candidateCmr.getCmrFieldName())) {
return ((opposite) ? ((role == role1) ? role2 : role1) : role);
}
}
}
}
throw new IllegalArgumentException();
}
/** This method return the fieldName of relation role on the other end. */
public String getInverseFieldName(String ejbName, String fieldName) {
EjbRelationshipRole oppRole = getOppositeRoleDescriptor(ejbName, fieldName);
CmrField inverse = ((oppRole == null) ? null : oppRole.getCmrField());
String inverseName = ((inverse == null) ? null : inverse.getCmrFieldName());
// if we are generating relationships, check for a generated inverse
if (generateFields() && (inverseName == null)) {
inverseName = getNameMapper().getGeneratedFieldForEjbField(ejbName, fieldName)[1];
}
return inverseName;
}