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Changed copy on write to occur during lookup, rather than after lookup.

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Much carnage, but it's way faster.


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/BRANCHES/WCM-DEV2/root@3172 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Britt Park
2006-06-21 13:07:42 +00:00
parent 8cb3db78e3
commit 1318a5204b
14 changed files with 134 additions and 280 deletions
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91
source/java/org/alfresco/repo/avm/LayeredDirectoryNodeImpl.java
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@@ -282,44 +282,6 @@ class LayeredDirectoryNodeImpl extends DirectoryNodeImpl implements LayeredDirec
}
}
/**
* Add a child to this directory and possibly COW.
* @param name The name of the child to add.
* @param child The child to add.
* @param lPath The Lookup.
* @return Whether the child was successfully added.
*/
public boolean addChild(String name, AVMNode child, Lookup lPath)
{
if (getChild(name) != null)
{
return false;
}
if (getDeleted(name) == null)
{
try
{
Lookup lookup = SuperRepository.GetInstance().lookupDirectory(-1, getUnderlying(lPath));
DirectoryNode dir = (DirectoryNode)lookup.getCurrentNode();
if (dir.lookupChild(lookup, name, -1) != null)
{
return false;
}
}
catch (AVMException re)
{
if (re instanceof AVMCycleException)
{
throw re;
}
// Do nothing.
}
}
DirectoryNode toModify = (DirectoryNode)copyOnWrite(lPath);
toModify.putChild(name, child);
child.setRepository(lPath.getRepository());
return true;
}
/**
* Does this node directly contain the indicated node.
@@ -506,7 +468,7 @@ class LayeredDirectoryNodeImpl extends DirectoryNodeImpl implements LayeredDirec
* @param name The name of the child to remove.
*/
@SuppressWarnings("unchecked")
public void rawRemoveChild(String name)
public void removeChild(String name)
{
ChildEntry entry = getChild(name);
if (entry != null)
@@ -518,48 +480,6 @@ class LayeredDirectoryNodeImpl extends DirectoryNodeImpl implements LayeredDirec
SuperRepository.GetInstance().getSession().save(dc);
}
/**
* Remove a child by name. Possibly COW.
* @param name The name of the child to remove.
* @param lPath The Lookup.
* @return Whether the child was successfully removed.
*/
@SuppressWarnings("unchecked")
public boolean removeChild(String name, Lookup lPath)
{
// Can't delete something that is already deleted.
if (getDeleted(name) != null)
{
return false;
}
ChildEntry entry = getChild(name);
if (entry == null)
{
// See if the name is seen via indirection.
try
{
Lookup lookup = SuperRepository.GetInstance().lookupDirectory(-1, getUnderlying(lPath));
DirectoryNode dir = (DirectoryNode)lookup.getCurrentNode();
if (dir.lookupChild(lookup, name, -1) == null)
{
return false;
}
}
catch (AVMException re)
{
if (re instanceof AVMCycleException)
{
throw re;
}
return false;
}
}
LayeredDirectoryNode toModify =
(LayeredDirectoryNode)copyOnWrite(lPath);
toModify.rawRemoveChild(name);
return true;
}
/**
* Get the type of this node.
* @return The type of this node.
@@ -596,8 +516,7 @@ class LayeredDirectoryNodeImpl extends DirectoryNodeImpl implements LayeredDirec
public void turnPrimary(Lookup lPath)
{
String path = lPath.getCurrentIndirection();
LayeredDirectoryNode toModify = (LayeredDirectoryNode)copyOnWrite(lPath);
toModify.rawSetPrimary(path);
rawSetPrimary(path);
}
/**
@@ -606,8 +525,7 @@ class LayeredDirectoryNodeImpl extends DirectoryNodeImpl implements LayeredDirec
*/
public void retarget(Lookup lPath, String target)
{
LayeredDirectoryNode toModify = (LayeredDirectoryNode)copyOnWrite(lPath);
toModify.rawSetPrimary(target);
rawSetPrimary(target);
}
/**
@@ -617,8 +535,7 @@ class LayeredDirectoryNodeImpl extends DirectoryNodeImpl implements LayeredDirec
*/
public void uncover(Lookup lPath, String name)
{
LayeredDirectoryNodeImpl toModify = (LayeredDirectoryNodeImpl)copyOnWrite(lPath);
DeletedChild dc = toModify.getDeleted(name);
DeletedChild dc = getDeleted(name);
if (dc != null)
{
SuperRepository.GetInstance().getSession().delete(dc);