if (roles.isEmpty()) {
continue;
}
if (relation.getManyToManyTableName() == null) {
final EjbRelationshipRoleType leftRole = roles.get(0);
final EjbRelationshipRoleType.RelationshipRoleSource leftRoleSource = leftRole.getRelationshipRoleSource();
final String leftEjbName = leftRoleSource == null ? null : leftRoleSource.getEjbName();
final EntityData leftEntityData = entities.get(moduleId + "#" + leftEjbName);
final EjbRelationshipRoleType.CmrField cmrField = leftRole.getCmrField();
final String leftFieldName = null != cmrField ? cmrField.getCmrFieldName() : null;
RelationField field;
if (leftRole.isForeignKeyColumnOnSource()) {
field = null != leftFieldName && null != leftEntityData ? leftEntityData.relations.get(leftFieldName) : null;
// todo warn field not found
if (field == null) {
continue;
}
} else {
final RelationField other = null != leftFieldName && null != leftEntityData ? leftEntityData.relations.get(leftFieldName) : null;
// todo warn field not found
if (other == null) {
continue;
}
field = other.getRelatedField();
// todo warn field not found
if (field == null) {
if (other instanceof OneToMany) {
// for a unidirectional oneToMany, the join column declaration
// is placed on the oneToMany element instead of manyToOne
field = other;
} else {
continue;
}
}
}
// For one-to-one, make sure that the field to recieve the FK
// is marked as the owning field
if (field instanceof OneToOne) {
final OneToOne left = (OneToOne) field;
final OneToOne right = (OneToOne) left.getRelatedField();
if (right != null) {
left.setMappedBy(null);
right.setMappedBy(left.getName());
}
}
final EjbRelationshipRoleType.RoleMapping roleMapping = leftRole.getRoleMapping();
for (final EjbRelationshipRoleType.RoleMapping.CmrFieldMapping cmrFieldMapping : roleMapping.getCmrFieldMapping()) {
final JoinColumn joinColumn = new JoinColumn();
joinColumn.setName(cmrFieldMapping.getForeignKeyColumn());
joinColumn.setReferencedColumnName(cmrFieldMapping.getKeyColumn());
field.getJoinColumn().add(joinColumn);
}
} else {
final JoinTable joinTable = new JoinTable();
joinTable.setName(relation.getManyToManyTableName());
//
// left
final EjbRelationshipRoleType leftRole = roles.get(0);
RelationField left = null;
if (leftRole.getRelationshipRoleSource() != null) {
final String leftEjbName = leftRole.getRelationshipRoleSource().getEjbName();
final EntityData leftEntityData = entities.get(moduleId + "#" + leftEjbName);
if (leftEntityData == null) {
// todo warn no such entity in ejb-jar.xml
continue;
}
final EjbRelationshipRoleType.CmrField lcf = leftRole.getCmrField();
left = (null != lcf ? leftEntityData.relations.get(lcf.getCmrFieldName()) : null);
}
if (left != null) {
left.setJoinTable(joinTable);
final EjbRelationshipRoleType.RoleMapping roleMapping = leftRole.getRoleMapping();
for (final EjbRelationshipRoleType.RoleMapping.CmrFieldMapping cmrFieldMapping : roleMapping.getCmrFieldMapping()) {
final JoinColumn joinColumn = new JoinColumn();
joinColumn.setName(cmrFieldMapping.getForeignKeyColumn());
joinColumn.setReferencedColumnName(cmrFieldMapping.getKeyColumn());
joinTable.getJoinColumn().add(joinColumn);
}
}
//
// right
if (roles.size() > 1) {
final EjbRelationshipRoleType rightRole = roles.get(1);
// if there wasn't a left cmr field, find the field for the right, so we can add the join table to it
if (left == null) {
final EjbRelationshipRoleType.CmrField rcf = rightRole.getCmrField();
if (rcf == null) {
// todo warn no cmr field declared for either role
continue;
} else if (rightRole.getRelationshipRoleSource() != null) {
final String rightEjbName = rightRole.getRelationshipRoleSource().getEjbName();
final EntityData rightEntityData = entities.get(moduleId + "#" + rightEjbName);
if (rightEntityData == null) {
// todo warn no such entity in ejb-jar.xml
continue;
}
final RelationField right = rightEntityData.relations.get(rcf.getCmrFieldName());
right.setJoinTable(joinTable);
}
}
final EjbRelationshipRoleType.RoleMapping roleMapping = rightRole.getRoleMapping();
for (final EjbRelationshipRoleType.RoleMapping.CmrFieldMapping cmrFieldMapping : roleMapping.getCmrFieldMapping()) {
final JoinColumn joinColumn = new JoinColumn();
joinColumn.setName(cmrFieldMapping.getForeignKeyColumn());
joinColumn.setReferencedColumnName(cmrFieldMapping.getKeyColumn());
joinTable.getInverseJoinColumn().add(joinColumn);