Examples with ChildAssocRefQueryCallback org.alfresco.repo.domain.node.NodeDAO.ChildAssocRefQueryCallback used on opensource projects

Example 6 with ChildAssocRefQueryCallback

use of org.alfresco.repo.domain.node.NodeDAO.ChildAssocRefQueryCallback in project alfresco-repository by Alfresco.

the class SOLRTrackingComponentImpl method cacheAncestors.

/**
 * Does a 'breadth first' search of ancestors, caching as it goes
 * @param nodeIds initial list of nodes to visit
 * @return all visited nodes, in no particular order
 */
private List<Long> cacheAncestors(List<Long> nodeIds) {
    final LinkedList<Long> toVisit = new LinkedList<Long>(nodeIds);
    Set<Long> visited = new TreeSet<Long>();
    Long nodeId;
    nodeDAO.cacheNodesById(toVisit);
    Long lastCached = toVisit.peekLast();
    while ((nodeId = toVisit.pollFirst()) != null) {
        if (visited.add(nodeId) && (nodeDAO.getNodeIdStatus(nodeId) != null) && (false == nodeDAO.getNodeIdStatus(nodeId).isDeleted())) {
            nodeDAO.getParentAssocs(nodeId, null, null, null, new ChildAssocRefQueryCallback() {

                @Override
                public boolean preLoadNodes() {
                    return false;
                }

                @Override
                public boolean orderResults() {
                    return false;
                }

                @Override
                public boolean handle(Pair<Long, ChildAssociationRef> childAssocPair, Pair<Long, NodeRef> parentNodePair, Pair<Long, NodeRef> childNodePair) {
                    toVisit.add(parentNodePair.getFirst());
                    return true;
                }

                @Override
                public void done() {
                }
            });
        }
        final boolean nodeIdEqualsLastCached = (nodeId == null && lastCached == null) || (nodeId != null && nodeId.equals(lastCached));
        if (nodeIdEqualsLastCached && !toVisit.isEmpty()) {
            nodeDAO.cacheNodesById(toVisit);
            lastCached = toVisit.peekLast();
        }
    }
    return new ArrayList<Long>(visited);
}