mirror of
https://github.com/Alfresco/alfresco-community-repo.git
synced 2025-06-09 17:45:10 +00:00
9c17cfa1e0
Added call to AVMService to get Versions by creation date. GetRepositoryVersions methods now return Lists of VersionDescriptors, value objects with the attributes of a version. git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/BRANCHES/WCM-DEV2/root@3131 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
742 lines
23 KiB
Java
742 lines
23 KiB
Java
/*
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* Copyright (C) 2006 Alfresco, Inc.
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*
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* Licensed under the Mozilla Public License version 1.1
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* with a permitted attribution clause. You may obtain a
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* copy of the License at
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*
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* http://www.alfresco.org/legal/license.txt
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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* either express or implied. See the License for the specific
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* language governing permissions and limitations under the
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* License.
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*/
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package org.alfresco.repo.avm;
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import java.io.Serializable;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.TreeMap;
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import org.hibernate.Query;
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import org.hibernate.Session;
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/**
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* A layered directory node. A layered directory node points at
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* an underlying directory, which may or may not exist. The visible
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* contents of a layered directory node is the contents of the underlying node
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* pointed at plus those nodes added to or modified in the layered directory node minus
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* those nodes which have been deleted in the layered directory node.
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* @author britt
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*/
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class LayeredDirectoryNodeImpl extends DirectoryNodeImpl implements LayeredDirectoryNode
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{
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static final long serialVersionUID = 4623043057918181724L;
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/**
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* The layer id.
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*/
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private long fLayerID;
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/**
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* The pointer to the underlying directory.
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*/
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private String fIndirection;
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/**
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* Whether this is a primary indirection node.
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*/
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private boolean fPrimaryIndirection;
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/**
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* Default constructor. Called by Hibernate.
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*/
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protected LayeredDirectoryNodeImpl()
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{
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}
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/**
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* Make a new one from a specified indirection path.
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* @param indirection The indirection path to set.
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* @param repository The repository that owns this node.
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*/
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public LayeredDirectoryNodeImpl(String indirection, Repository repos)
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{
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super(repos.getSuperRepository().issueID(), repos);
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fLayerID = -1;
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fIndirection = indirection;
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fPrimaryIndirection = true;
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repos.getSuperRepository().getSession().save(this);
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}
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/**
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* Kind of copy constructor, sort of.
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* @param other The LayeredDirectoryNode we are copied from.
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* @param repos The Repository object we use.
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*/
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@SuppressWarnings("unchecked")
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public LayeredDirectoryNodeImpl(LayeredDirectoryNode other,
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Repository repos)
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{
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super(repos.getSuperRepository().issueID(), repos);
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Session sess = repos.getSuperRepository().getSession();
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fIndirection = other.getUnderlying();
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fPrimaryIndirection = other.getPrimaryIndirection();
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fLayerID = -1;
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sess.save(this);
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sess.flush();
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for (ChildEntry child : other.getChildren())
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{
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ChildEntryImpl newChild = new ChildEntryImpl(child.getName(),
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this,
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child.getChild());
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repos.getSuperRepository().getSession().save(newChild);
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}
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for (DeletedChild dc : other.getDeleted())
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{
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DeletedChild newDel = new DeletedChildImpl(dc.getName(),
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this);
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sess.save(newDel);
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}
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}
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/**
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* Construct one from a PlainDirectoryNode. Called when a COW is performed in a layered
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* context.
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* @param other The PlainDirectoryNode.
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* @param repos The Repository we should belong to.
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* @param lPath The Lookup object.
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*/
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@SuppressWarnings("unchecked")
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public LayeredDirectoryNodeImpl(PlainDirectoryNode other,
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Repository repos,
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Lookup lPath,
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boolean copyContents)
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{
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super(repos.getSuperRepository().issueID(), repos);
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fIndirection = null;
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fPrimaryIndirection = false;
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fLayerID = -1;
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Session sess = repos.getSuperRepository().getSession();
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sess.save(this);
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if (copyContents)
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{
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sess.flush();
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for (ChildEntry child : other.getChildren())
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{
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ChildEntryImpl newChild = new ChildEntryImpl(child.getName(),
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this,
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child.getChild());
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sess.save(newChild);
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}
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}
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}
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/**
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* Create a new layered directory based on a directory we are being named from
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* that is in not in the layer of the source lookup.
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* @param dir The directory
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* @param repo The repository
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* @param srcLookup The source lookup.
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* @param name The name of the target.
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*/
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public LayeredDirectoryNodeImpl(DirectoryNode dir,
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Repository repo,
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Lookup srcLookup,
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String name)
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{
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super(repo.getSuperRepository().issueID(), repo);
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fIndirection = srcLookup.getIndirectionPath() + "/" + name;
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fPrimaryIndirection = true;
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fLayerID = -1;
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repo.getSuperRepository().getSession().save(this);
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}
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/**
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* Is this a primary indirection node.
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* @return Whether this is a primary indirection.
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*/
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public boolean getPrimaryIndirection()
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{
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return fPrimaryIndirection;
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}
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/**
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* Set the primary indirection state of this.
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* @param has Whether this is a primary indirection node.
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*/
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public void setPrimaryIndirection(boolean has)
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{
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fPrimaryIndirection = has;
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}
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/**
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* Get the indirection path.
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* @return The indirection path.
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*/
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public String getIndirection()
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{
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return fIndirection;
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}
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public String getUnderlying()
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{
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return fIndirection;
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}
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/**
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* Get the underlying path in the Lookup's context.
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* @param lPath The Lookup.
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* @return The underlying path.
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*/
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public String getUnderlying(Lookup lPath)
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{
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if (fPrimaryIndirection)
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{
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return fIndirection;
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}
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return lPath.getCurrentIndirection();
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}
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/**
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* Get the layer id.
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* @return The layer id.
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*/
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public long getLayerID()
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{
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return fLayerID;
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}
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/**
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* Set the layer id.
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* @param id The id to set.
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*/
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public void setLayerID(long id)
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{
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fLayerID = id;
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}
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/**
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* Copy on write logic.
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* @param lPath
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* @return The copy or null.
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*/
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public AVMNodeImpl possiblyCopy(Lookup lPath)
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{
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if (!lPath.needsCopying())
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{
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return null;
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}
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// Capture the repository.
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Repository repo = lPath.getRepository();
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// Otherwise we do an actual copy.
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LayeredDirectoryNodeImpl newMe = null;
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if (!lPath.isInThisLayer())
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{
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// This means that this is being seen indirectly through the topmost
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// layer. The following creates a node that will inherit its
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// indirection from its parent.
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newMe = new LayeredDirectoryNodeImpl((String)null,
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repo);
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newMe.setPrimaryIndirection(false);
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newMe.setLayerID(lPath.getTopLayer().getLayerID());
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}
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else
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{
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// A simple copy is made.
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newMe = new LayeredDirectoryNodeImpl(this,
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repo);
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newMe.setLayerID(getLayerID());
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}
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newMe.setAncestor(this);
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return newMe;
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}
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/**
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* Insert a child node without COW.
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* @param name The name to give the child.
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*/
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public void putChild(String name, AVMNode node)
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{
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Session sess = SuperRepository.GetInstance().getSession();
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// sess.lock(this, LockMode.UPGRADE);
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ChildEntry entry = new ChildEntryImpl(name, this, node);
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ChildEntry existing = (ChildEntry)sess.get(ChildEntryImpl.class, (Serializable)entry);
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if (existing != null)
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{
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existing.setChild(node);
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}
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else
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{
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sess.save(entry);
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}
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DeletedChild dc = getDeleted("name");
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if (dc != null)
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{
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sess.delete(dc);
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}
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}
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/**
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* Add a child to this directory and possibly COW.
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* @param name The name of the child to add.
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* @param child The child to add.
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* @param lPath The Lookup.
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* @return Whether the child was successfully added.
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*/
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public boolean addChild(String name, AVMNode child, Lookup lPath)
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{
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if (getChild(name) != null)
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{
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return false;
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}
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if (getDeleted(name) == null)
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{
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try
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{
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Lookup lookup = lPath.getRepository().getSuperRepository().lookupDirectory(-1, getUnderlying(lPath));
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DirectoryNode dir = (DirectoryNode)lookup.getCurrentNode();
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if (dir.lookupChild(lookup, name, -1) != null)
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{
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return false;
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}
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}
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catch (AVMException re)
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{
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if (re instanceof AVMCycleException)
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{
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throw re;
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}
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// Do nothing.
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}
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}
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DirectoryNode toModify = (DirectoryNode)copyOnWrite(lPath);
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toModify.putChild(name, child);
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child.setParent(toModify);
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child.setRepository(lPath.getRepository());
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return true;
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}
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/**
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* Does this node directly contain the indicated node.
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* @param node The node we are checking.
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* @return Whether node is directly contained.
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*/
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public boolean directlyContains(AVMNode node)
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{
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return getChild(node) != null;
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}
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/**
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* Get a listing of the virtual contents of this directory.
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* @param lPath The Lookup.
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* @return A Map from names to nodes. This is a sorted Map.
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*/
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@SuppressWarnings("unchecked")
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public Map<String, AVMNode> getListing(Lookup lPath)
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{
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// Get the base listing from the thing we indirect to.
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Map<String, AVMNode> baseListing = null;
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try
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{
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Lookup lookup = lPath.getRepository().getSuperRepository().lookupDirectory(-1, getUnderlying(lPath));
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DirectoryNode dir = (DirectoryNode)lookup.getCurrentNode();
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baseListing = dir.getListing(lookup);
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}
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catch (AVMException re)
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{
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if (re instanceof AVMCycleException)
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{
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throw re;
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}
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// It's OK for an indirection to dangle.
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baseListing = new HashMap<String, AVMNode>();
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}
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// Filter the base listing by taking out anything in the deleted Set.
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Map<String, AVMNode> listing = new TreeMap<String, AVMNode>();
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for (String name : baseListing.keySet())
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{
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if (getDeleted(name) != null)
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{
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continue;
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}
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listing.put(name, baseListing.get(name));
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}
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for (ChildEntry entry : getChildren())
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{
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listing.put(entry.getName(), entry.getChild());
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}
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return listing;
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}
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/**
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* Get a listing from a directory node descriptor.
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* @param dir The directory node descriptor.
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* @return A Map of names to node descriptors.
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*/
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public Map<String, AVMNodeDescriptor> getListing(AVMNodeDescriptor dir)
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{
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if (dir.getPath() == null || dir.getIndirection() == null)
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{
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throw new AVMBadArgumentException("Illegal null argument.");
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}
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Map<String, AVMNodeDescriptor> baseListing = new TreeMap<String, AVMNodeDescriptor>();
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try
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{
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Lookup lookup = SuperRepository.GetInstance().lookupDirectory(-1, dir.getIndirection());
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DirectoryNode dirNode = (DirectoryNode)lookup.getCurrentNode();
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Map<String, AVMNode> listing = dirNode.getListing(lookup);
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for (String name : listing.keySet())
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{
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baseListing.put(name,
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listing.get(name).getDescriptor(dir.getPath(), name,
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lookup.getCurrentIndirection()));
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}
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}
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catch (AVMException e)
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{
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if (e instanceof AVMCycleException)
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{
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throw e;
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}
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}
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List<DeletedChild> deleted = getDeleted();
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for (DeletedChild child : deleted)
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{
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baseListing.remove(child.getName());
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}
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List<ChildEntry> children = getChildren();
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for (ChildEntry child : children)
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{
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baseListing.put(child.getName(),
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child.getChild().getDescriptor(dir.getPath(),
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child.getName(),
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dir.getIndirection()));
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}
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return baseListing;
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}
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/**
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* Lookup a child by name.
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* @param lPath The Lookup.
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* @param name The name we are looking.
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* @param version The version in which we are looking.
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* @return The child or null if not found.
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*/
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@SuppressWarnings("unchecked")
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public AVMNode lookupChild(Lookup lPath, String name, int version)
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{
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// If the name has been deleted quickly return.
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if (getDeleted(name) != null)
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{
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return null;
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}
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ChildEntry entry = getChild(name);
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if (entry != null)
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{
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return AVMNodeUnwrapper.Unwrap(entry.getChild());
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}
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// Not here so check our indirection.
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try
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{
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Lookup lookup = lPath.getRepository().getSuperRepository().lookupDirectory(-1, getUnderlying(lPath));
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DirectoryNode dir = (DirectoryNode)lookup.getCurrentNode();
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return dir.lookupChild(lookup, name, -1);
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}
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catch (AVMException re)
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{
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if (re instanceof AVMCycleException)
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{
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throw re;
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}
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return null;
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}
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}
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/**
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* Lookup a child using a node descriptor as context.
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* @param mine The node descriptor for this,
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* @param name The name to lookup,
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* @return The node descriptor.
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*/
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public AVMNodeDescriptor lookupChild(AVMNodeDescriptor mine, String name)
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{
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if (mine.getPath() == null || mine.getIndirection() == null)
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{
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throw new AVMBadArgumentException("Illegal null argument.");
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}
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if (getDeleted(name) != null)
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{
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return null;
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}
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ChildEntry entry = getChild(name);
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if (entry != null)
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{
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return entry.getChild().getDescriptor(mine.getPath(),
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name,
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mine.getIndirection());
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}
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try
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{
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Lookup lookup = SuperRepository.GetInstance().lookupDirectory(-1, mine.getIndirection());
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DirectoryNode dir = (DirectoryNode)lookup.getCurrentNode();
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AVMNode child = dir.lookupChild(lookup, name, -1);
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if (child == null)
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{
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return null;
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}
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return child.getDescriptor(lookup);
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}
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catch (AVMException e)
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{
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if (e instanceof AVMCycleException)
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{
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throw e;
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}
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return null;
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}
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}
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/**
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* Directly remove a child. Do not COW. Do not pass go etc.
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* @param name The name of the child to remove.
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*/
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@SuppressWarnings("unchecked")
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public void rawRemoveChild(String name)
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{
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ChildEntry entry = getChild(name);
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if (entry != null)
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{
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SuperRepository.GetInstance().getSession().delete(entry);
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}
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DeletedChild dc = new DeletedChildImpl(name,
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this);
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SuperRepository.GetInstance().getSession().save(dc);
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}
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/**
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* Remove a child by name. Possibly COW.
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* @param name The name of the child to remove.
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* @param lPath The Lookup.
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* @return Whether the child was successfully removed.
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*/
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@SuppressWarnings("unchecked")
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public boolean removeChild(String name, Lookup lPath)
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{
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// Can't delete something that is already deleted.
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if (getDeleted(name) != null)
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{
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return false;
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}
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ChildEntry entry = getChild(name);
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if (entry == null)
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{
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// See if the name is seen via indirection.
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try
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{
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Lookup lookup = lPath.getRepository().getSuperRepository().lookupDirectory(-1, getUnderlying(lPath));
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DirectoryNode dir = (DirectoryNode)lookup.getCurrentNode();
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if (dir.lookupChild(lookup, name, -1) == null)
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{
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return false;
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}
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}
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catch (AVMException re)
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{
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if (re instanceof AVMCycleException)
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{
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throw re;
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}
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return false;
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}
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}
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LayeredDirectoryNode toModify =
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(LayeredDirectoryNode)copyOnWrite(lPath);
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toModify.rawRemoveChild(name);
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return true;
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}
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/**
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* Get the type of this node.
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* @return The type of this node.
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*/
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public int getType()
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{
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return AVMNodeType.LAYERED_DIRECTORY;
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}
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/**
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* For diagnostics. Get a String representation.
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* @param lPath The Lookup.
|
|
* @return A String representation.
|
|
*/
|
|
public String toString(Lookup lPath)
|
|
{
|
|
return "[LD:" + getId() + ":" + getUnderlying(lPath) + "]";
|
|
}
|
|
|
|
/**
|
|
* Set the primary indirection. No COW.
|
|
* @param path The indirection path.
|
|
*/
|
|
public void rawSetPrimary(String path)
|
|
{
|
|
fIndirection = path;
|
|
fPrimaryIndirection = true;
|
|
}
|
|
|
|
/**
|
|
* Make this node become a primary indirection. COW.
|
|
* @param lPath The Lookup.
|
|
*/
|
|
public void turnPrimary(Lookup lPath)
|
|
{
|
|
String path = lPath.getCurrentIndirection();
|
|
LayeredDirectoryNode toModify = (LayeredDirectoryNode)copyOnWrite(lPath);
|
|
toModify.rawSetPrimary(path);
|
|
}
|
|
|
|
/**
|
|
* Make this point at a new target.
|
|
* @param lPath The Lookup.
|
|
*/
|
|
public void retarget(Lookup lPath, String target)
|
|
{
|
|
LayeredDirectoryNode toModify = (LayeredDirectoryNode)copyOnWrite(lPath);
|
|
toModify.rawSetPrimary(target);
|
|
}
|
|
|
|
/**
|
|
* Let anything behind name in this become visible.
|
|
* @param lPath The Lookup.
|
|
* @param name The name to uncover.
|
|
*/
|
|
public void uncover(Lookup lPath, String name)
|
|
{
|
|
LayeredDirectoryNodeImpl toModify = (LayeredDirectoryNodeImpl)copyOnWrite(lPath);
|
|
DeletedChild dc = toModify.getDeleted(name);
|
|
if (dc != null)
|
|
{
|
|
lPath.getRepository().getSuperRepository().getSession().delete(dc);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get the descriptor for this node.
|
|
* @param The Lookup.
|
|
* @return A descriptor.
|
|
*/
|
|
public AVMNodeDescriptor getDescriptor(Lookup lPath)
|
|
{
|
|
BasicAttributes attrs = getBasicAttributes();
|
|
return new AVMNodeDescriptor(lPath.getRepresentedPath(),
|
|
AVMNodeType.LAYERED_DIRECTORY,
|
|
attrs.getCreator(),
|
|
attrs.getOwner(),
|
|
attrs.getLastModifier(),
|
|
attrs.getCreateDate(),
|
|
attrs.getModDate(),
|
|
attrs.getAccessDate(),
|
|
getId(),
|
|
getVersionID(),
|
|
getUnderlying(lPath),
|
|
fPrimaryIndirection,
|
|
fLayerID,
|
|
-1);
|
|
}
|
|
|
|
/**
|
|
* Get a descriptor for this.
|
|
* @param parentPath The parent path.
|
|
* @param name The name this was looked up with.
|
|
* @param parentIndirection The indirection of the parent.
|
|
* @return
|
|
*/
|
|
public AVMNodeDescriptor getDescriptor(String parentPath, String name, String parentIndirection)
|
|
{
|
|
BasicAttributes attrs = getBasicAttributes();
|
|
String path = parentPath.endsWith("/") ? parentPath + name : parentPath + "/" + name;
|
|
String indirection = null;
|
|
if (fPrimaryIndirection)
|
|
{
|
|
indirection = fIndirection;
|
|
}
|
|
else
|
|
{
|
|
indirection = parentIndirection.endsWith("/") ? parentIndirection + name :
|
|
parentIndirection + "/" + name;
|
|
}
|
|
return new AVMNodeDescriptor(path,
|
|
AVMNodeType.LAYERED_DIRECTORY,
|
|
attrs.getCreator(),
|
|
attrs.getOwner(),
|
|
attrs.getLastModifier(),
|
|
attrs.getCreateDate(),
|
|
attrs.getModDate(),
|
|
attrs.getAccessDate(),
|
|
getId(),
|
|
getVersionID(),
|
|
indirection,
|
|
fPrimaryIndirection,
|
|
fLayerID,
|
|
-1);
|
|
}
|
|
|
|
/**
|
|
* Set the indirection.
|
|
* @param indirection
|
|
*/
|
|
public void setIndirection(String indirection)
|
|
{
|
|
fIndirection = indirection;
|
|
}
|
|
|
|
/**
|
|
* Get the deleted child entry for a given name.
|
|
* @param name The name to look for.
|
|
* @return A DeletedChild object.
|
|
*/
|
|
@SuppressWarnings("unchecked")
|
|
private DeletedChild getDeleted(String name)
|
|
{
|
|
Query query = SuperRepository.GetInstance().getSession().getNamedQuery("DeletedChild.ByNameParent");
|
|
query.setString("name", name);
|
|
query.setEntity("parent", this);
|
|
query.setCacheable(true);
|
|
query.setCacheRegion("DeletedChild.ByNameParent");
|
|
List<DeletedChild> dc = (List<DeletedChild>)query.list();
|
|
if (dc.size() == 0)
|
|
{
|
|
return null;
|
|
}
|
|
return dc.get(0);
|
|
}
|
|
|
|
/**
|
|
* Get all the deleted entries in this directory.
|
|
* @return A List of DeletedEntry objects.
|
|
*/
|
|
@SuppressWarnings("unchecked")
|
|
public List<DeletedChild> getDeleted()
|
|
{
|
|
Query query = SuperRepository.GetInstance().getSession().getNamedQuery("DeletedChild.ByParent");
|
|
query.setEntity("parent", this);
|
|
query.setCacheable(true);
|
|
query.setCacheRegion("DeletedChild.ByParent");
|
|
return (List<DeletedChild>)query.list();
|
|
}
|
|
|
|
/**
|
|
* Does nothing because LayeredDirectoryNodes can't be roots.
|
|
* @param isRoot
|
|
*/
|
|
public void setIsRoot(boolean isRoot)
|
|
{
|
|
}
|
|
}
|