6.7. Two Sets of Unordered Resources

Figure 6.2. Visual representation of the start order for two ordered sets of unordered resources

Of course either set — or both sets — of resources can also be internally ordered (by setting sequential="true") and there is no limit to the number of sets that can be specified.

Example 6.9. Advanced use of set ordering - Three ordered sets, two of which are internally unordered

<constraints>
    <rsc_order id="order-1">
      <resource_set id="ordered-set-1" sequential="false">
        <resource_ref id="A"/>
        <resource_ref id="B"/>
      </resource_set>
      <resource_set id="ordered-set-2" sequential="true">
        <resource_ref id="C"/>
        <resource_ref id="D"/>
      </resource_set>
      <resource_set id="ordered-set-3" sequential="false">
        <resource_ref id="E"/>
        <resource_ref id="F"/>
      </resource_set>
    </rsc_order>
</constraints>