[emf-dev] Why no xmi:id when writing to XMI?

[Xiang Li <xiang.li@xxxxxxxxxxxxxx>]

Hello emf-dev,

I tried to use EMF's default XMI serialization to write a simple class Company which holds references of many Employees. Each employee holds also a reference to Company. When i write a company and two employees to XMI.The result is as follows:
<?xml version="1.0" encoding="ASCII"?>
<xmi:XMI xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI"; xmlns:RefTest="urn:RefTest.ecore">
  <RefTest:Employee company="/2"/>
  <RefTest:Employee company="/2"/>
  <RefTest:Company employees="/0 /1"/>
</xmi:XMI>

I don't know why there are no xmi:id declarations in it. 
Could any one of you help me on this problem?

cheers
Xiang Li
xiang.li@xxxxxxxxxxxxxx
2005-05-23