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Factored the ancestor-descendent and merged from-to relationships

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out of AVMNode.  Easier to get hibernate to do what I want and appears
to be a little more efficient as it removes several FK constraints
from a frequently updated table.


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/BRANCHES/WCM-DEV2/root@3137 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Britt Park
2006-06-18 21:35:17 +00:00
parent 606096011c
commit d3f6048fbc
8 changed files with 338 additions and 40 deletions
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43
source/java/org/alfresco/repo/avm/OrphanReaper.java
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@@ -184,6 +184,7 @@ class OrphanReaper implements Runnable
{
public void perform(Session session)
{
SuperRepository.GetInstance().setSession(session);
Query query = session.getNamedQuery("FindOrphans");
query.setMaxResults(fBatchSize);
List<AVMNode> nodes = (List<AVMNode>)query.list();
@@ -196,28 +197,48 @@ class OrphanReaper implements Runnable
for (AVMNode node : nodes)
{
// Save away the ancestor and merged from fields from this node.
AVMNode ancestor = node.getAncestor();
AVMNode mergedFrom = node.getMergedFrom();
// Get all the nodes that have this node as ancestor.
query = session.getNamedQuery("AVMNode.GetDescendents");
query.setEntity("node", node);
List<AVMNode> descendents = (List<AVMNode>)query.list();
for (AVMNode desc : descendents)
query = session.createQuery("from HistoryLinkImpl hl where hl.descendent = :desc");
query.setEntity("desc", node);
HistoryLink hlink = (HistoryLink)query.uniqueResult();
AVMNode ancestor = null;
if (hlink != null)
{
ancestor = hlink.getAncestor();
session.delete(hlink);
}
query = session.createQuery("from MergeLinkImpl ml where ml.mto = :to");
query.setEntity("to", node);
MergeLink mlink = (MergeLink)query.uniqueResult();
AVMNode mergedFrom = null;
if (mlink != null)
{
mergedFrom = mlink.getMfrom();
session.delete(mlink);
}
// Get all the nodes that have this node as ancestor.
query = session.getNamedQuery("HistoryLink.ByAncestor");
query.setEntity("node", node);
List<HistoryLink> links = (List<HistoryLink>)query.list();
for (HistoryLink link : links)
{
AVMNode desc = link.getDescendent();
desc.setAncestor(ancestor);
if (desc.getMergedFrom() == null)
{
desc.setMergedFrom(mergedFrom);
}
session.delete(link);
}
// Get all the nodes that have this node as mergedFrom
query = session.getNamedQuery("AVMNode.GetMergedTo");
query = session.getNamedQuery("MergeLink.ByFrom");
query.setEntity("merged", node);
List<AVMNode> merged = (List<AVMNode>)query.list();
for (AVMNode merge : merged)
List<MergeLink> mlinks = (List<MergeLink>)query.list();
for (MergeLink link : mlinks)
{
merge.setMergedFrom(ancestor);
link.getMto().setMergedFrom(ancestor);
session.delete(link);
}
session.flush();
node = AVMNodeUnwrapper.Unwrap(node);
// Extra work for directories.
if (node instanceof DirectoryNode)