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javajcr

NodeUtil unwrap method

What does the NodeUtil unwrap method do in this snipet and what is the effect on the Node:

Node node;
if (subMap.get(JcrConstants.JCR_UUID) != null && NodeUtil.unwrap(root) instanceof NodeImpl) {
         final Node unwrapped = NodeUtil.unwrap(root);
         node = ((NodeImpl) unwrapped).addNodeWithUuid(key, nodeType, 
         String.valueOf(subMap.get(JcrConstants.JCR_UUID)));
} else {
         node = root.addNode(key, nodeType);
}
Solution

  • The two lines 

    final Node unwrapped = NodeUtil.unwrap(root);
node = ((NodeImpl) unwrapped).addNodeWithUuid(key, nodeType, 
         String.valueOf(subMap.get(JcrConstants.JCR_UUID)));

    basically allow you to add a note with a specific UUID as opposed to the system generated one.