mirror of
https://github.com/Alfresco/alfresco-community-repo.git
synced 2025-06-02 17:35:18 +00:00
d859972f4c
Changed createSnapshot flavors to return version ids just created instead of void. git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/BRANCHES/WCM-DEV2/root@3270 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
948 lines
30 KiB
Java
948 lines
30 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.File;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.io.RandomAccessFile;
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import java.util.Date;
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import java.util.List;
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import java.util.SortedMap;
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import org.alfresco.repo.avm.SuperRepository;
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import org.alfresco.repo.avm.hibernate.HibernateHelper;
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import org.alfresco.repo.avm.hibernate.HibernateTxn;
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import org.alfresco.repo.avm.hibernate.HibernateTxnCallback;
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import org.hibernate.Session;
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import org.hibernate.tool.hbm2ddl.SchemaExport;
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/**
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* Implements the AVMService. Stub.
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* @author britt
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*/
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public class AVMServiceImpl implements AVMService
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{
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/**
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* The HibernateTxn.
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*/
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private HibernateTxn fTransaction;
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/**
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* The SuperRepository for each service thread.
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*/
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private SuperRepository fSuperRepository;
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/**
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* The storage directory.
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*/
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private String fStorage;
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/**
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* The node id issuer.
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*/
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private Issuer fNodeIssuer;
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/**
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* The content id issuer.
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*/
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private Issuer fContentIssuer;
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/**
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* The layer id issuer.
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*/
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private Issuer fLayerIssuer;
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/**
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* Whether the tables should be dropped and created.
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*/
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private boolean fCreateTables;
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/**
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* The HibernateHelper.
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*/
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private HibernateHelper fHibernateHelper;
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/**
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* Basic constructor for the service.
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*/
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public AVMServiceImpl()
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{
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}
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/**
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* Final initialization of the service. Must be called only on a
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* fully initialized instance.
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*/
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public void init()
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{
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fTransaction = new HibernateTxn(fHibernateHelper.getSessionFactory());
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if (fCreateTables)
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{
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SchemaExport se = new SchemaExport(fHibernateHelper.getConfiguration());
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se.drop(false, true);
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se.create(false, true);
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File storage = new File(fStorage);
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storage.mkdirs();
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fNodeIssuer = new Issuer(fStorage + File.separator + "node", 0L);
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fContentIssuer = new Issuer(fStorage + File.separator + "content", 0L);
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fLayerIssuer = new Issuer(fStorage + File.separator + "layer", 0L);
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fSuperRepository = new SuperRepository(fNodeIssuer,
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fContentIssuer,
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fLayerIssuer,
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fStorage);
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createRepository("main");
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}
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else
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{
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try
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{
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fNodeIssuer = new Issuer(fStorage + File.separator + "node");
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fContentIssuer = new Issuer(fStorage + File.separator + "content");
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fLayerIssuer = new Issuer(fStorage + File.separator + "layer");
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fSuperRepository = new SuperRepository(fNodeIssuer,
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fContentIssuer,
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fLayerIssuer,
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fStorage);
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}
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catch (Exception e)
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{
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// TODO Log this and abort in some useful way.
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}
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}
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}
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/**
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* Set the location of file storage.
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* @param storage
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*/
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public void setStorage(String storage)
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{
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fStorage = storage;
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}
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/**
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* Set whether we should drop and create tables.
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* @param createTables
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*/
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public void setCreateTables(boolean createTables)
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{
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fCreateTables = createTables;
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}
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/**
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* Set the HibernateHelper.
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* @param helper
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*/
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public void setHibernateHelper(HibernateHelper helper)
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{
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fHibernateHelper = helper;
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}
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/**
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* Get an InputStream from a file.
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* @param version The version to look under.
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* @param path The absolute path.
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* @return An InputStream
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* @throws AVMNotFoundException When the path is invalid.
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*/
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public InputStream getFileInputStream(final int version, final String path)
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{
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if (path == null)
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{
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throw new AVMBadArgumentException("Null path.");
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}
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class HTxnCallback implements HibernateTxnCallback
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{
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public InputStream in = null;
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public void perform(Session session)
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{
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fSuperRepository.setSession(session);
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in = fSuperRepository.getInputStream(version, path);
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}
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};
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HTxnCallback doit = new HTxnCallback();
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fTransaction.perform(doit, false);
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return doit.in;
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}
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/**
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* Get an InputStream from a particular version of a file.
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* @param desc The node descriptor.
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* @return The InputStream.
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*/
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public InputStream getFileInputStream(final AVMNodeDescriptor desc)
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{
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if (desc == null)
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{
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throw new AVMBadArgumentException("Illegal null argument.");
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}
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class HTxnCallback implements HibernateTxnCallback
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{
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public InputStream in = null;
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public void perform(Session session)
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{
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fSuperRepository.setSession(session);
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in = fSuperRepository.getInputStream(desc);
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}
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}
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HTxnCallback doit = new HTxnCallback();
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fTransaction.perform(doit, false);
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return doit.in;
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}
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/* (non-Javadoc)
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* @see org.alfresco.repo.avm.AVMService#getFileOutputStream(java.lang.String)
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*/
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public OutputStream getFileOutputStream(final String path)
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{
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if (path == null)
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{
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throw new AVMBadArgumentException("Null path.");
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}
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class HTxnCallback implements HibernateTxnCallback
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{
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public OutputStream out = null;
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public void perform(Session session)
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{
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fSuperRepository.setSession(session);
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out = fSuperRepository.getOutputStream(path);
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}
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};
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HTxnCallback doit = new HTxnCallback();
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fTransaction.perform(doit, true);
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return doit.out;
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}
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/**
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* Get a random access file to the given file.
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* @param version The version to look for (read-only)
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* @param path The path to the file.
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* @param access The access mode for RandomAccessFile
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* @return A Random Access File.
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*/
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public RandomAccessFile getRandomAccess(final int version, final String path, final String access)
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{
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if (path == null || access == null)
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{
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throw new AVMBadArgumentException("Illegal null argument.");
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}
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class HTxnCallback implements HibernateTxnCallback
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{
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public RandomAccessFile file;
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public void perform(Session session)
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{
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fSuperRepository.setSession(session);
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file = fSuperRepository.getRandomAccess(version, path, access);
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}
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}
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HTxnCallback doit = new HTxnCallback();
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fTransaction.perform(doit, true);
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return doit.file;
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}
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/* (non-Javadoc)
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* @see org.alfresco.repo.avm.AVMService#getFolderListing(int, java.lang.String)
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*/
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public SortedMap<String, AVMNodeDescriptor> getDirectoryListing(final int version, final String path)
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{
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if (path == null)
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{
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throw new AVMBadArgumentException("Null path.");
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}
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class HTxnCallback implements HibernateTxnCallback
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{
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public SortedMap<String, AVMNodeDescriptor> listing;
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public void perform(Session session)
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{
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fSuperRepository.setSession(session);
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listing = fSuperRepository.getListing(version, path);
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}
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}
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HTxnCallback doit = new HTxnCallback();
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fTransaction.perform(doit, false);
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return doit.listing;
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}
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/**
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* Get a directory listing from a 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 SortedMap<String, AVMNodeDescriptor> getDirectoryListing(final AVMNodeDescriptor dir)
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{
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if (dir == null)
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{
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throw new AVMBadArgumentException("Null descriptor.");
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}
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class HTxnCallback implements HibernateTxnCallback
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{
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public SortedMap<String, AVMNodeDescriptor> listing;
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public void perform(Session session)
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{
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fSuperRepository.setSession(session);
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listing = fSuperRepository.getListing(dir);
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}
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}
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HTxnCallback doit = new HTxnCallback();
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fTransaction.perform(doit, false);
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return doit.listing;
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}
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/* (non-Javadoc)
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* @see org.alfresco.repo.avm.AVMService#createFile(java.lang.String, java.lang.String)
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*/
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public OutputStream createFile(final String path, final String name)
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{
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if (path == null || name == null)
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{
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throw new AVMBadArgumentException("Illegal null argument.");
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}
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class HTxnCallback implements HibernateTxnCallback
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{
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public OutputStream out;
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public void perform(Session session)
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{
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fSuperRepository.setSession(session);
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out = fSuperRepository.createFile(path, name);
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}
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}
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HTxnCallback doit = new HTxnCallback();
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fTransaction.perform(doit, true);
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return doit.out;
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}
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/* (non-Javadoc)
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* @see org.alfresco.repo.avm.AVMService#createFolder(java.lang.String, java.lang.String)
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*/
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public void createDirectory(final String path, final String name)
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{
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if (path == null || name == null)
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{
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throw new AVMBadArgumentException("Illegal null argument.");
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}
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class HTxnCallback implements HibernateTxnCallback
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{
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public void perform(Session session)
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{
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fSuperRepository.setSession(session);
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fSuperRepository.createDirectory(path, name);
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}
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}
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HTxnCallback doit = new HTxnCallback();
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fTransaction.perform(doit, true);
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}
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/* (non-Javadoc)
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* @see org.alfresco.repo.avm.AVMService#createLayeredFile(java.lang.String, java.lang.String, java.lang.String)
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*/
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public void createLayeredFile(final String srcPath, final String parent, final String name)
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{
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if (srcPath == null || parent == null || name == null)
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{
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throw new AVMBadArgumentException("Illegal null argument.");
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}
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class HTxnCallback implements HibernateTxnCallback
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{
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public void perform(Session session)
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{
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fSuperRepository.setSession(session);
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fSuperRepository.createLayeredFile(srcPath, parent, name);
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}
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}
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HTxnCallback doit = new HTxnCallback();
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fTransaction.perform(doit, true);
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}
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/* (non-Javadoc)
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* @see org.alfresco.repo.avm.AVMService#createLayeredFolder(java.lang.String, java.lang.String, java.lang.String)
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*/
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public void createLayeredDirectory(final String srcPath, final String parent, final String name)
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{
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if (srcPath == null || parent == null || name == null)
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{
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throw new AVMBadArgumentException("Illegal null argument.");
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}
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class HTxnCallback implements HibernateTxnCallback
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{
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public void perform(Session session)
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{
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fSuperRepository.setSession(session);
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fSuperRepository.createLayeredDirectory(srcPath, parent, name);
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}
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}
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HTxnCallback doit = new HTxnCallback();
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fTransaction.perform(doit, true);
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}
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/* (non-Javadoc)
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* @see org.alfresco.repo.avm.AVMService#createRepository(java.lang.String)
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*/
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public void createRepository(final String name)
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{
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if (name == null)
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{
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throw new AVMBadArgumentException("Name is null.");
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}
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class HTxnCallback implements HibernateTxnCallback
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{
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public void perform(Session session)
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{
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fSuperRepository.setSession(session);
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fSuperRepository.createRepository(name);
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}
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}
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HTxnCallback doit = new HTxnCallback();
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fTransaction.perform(doit, true);
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}
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/* (non-Javadoc)
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* @see org.alfresco.repo.avm.AVMService#createBranch(int, java.lang.String, java.lang.String, java.lang.String)
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*/
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public void createBranch(final int version, final String srcPath, final String dstPath,
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final String name)
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{
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if (srcPath == null || dstPath == null || name == null)
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{
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throw new AVMBadArgumentException("Illegal null argument.");
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}
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class HTxnCallback implements HibernateTxnCallback
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{
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public void perform(Session session)
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{
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fSuperRepository.setSession(session);
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fSuperRepository.createBranch(version, srcPath, dstPath, name);
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}
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}
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HTxnCallback doit = new HTxnCallback();
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fTransaction.perform(doit, true);
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}
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/* (non-Javadoc)
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* @see org.alfresco.repo.avm.AVMService#removeNode(java.lang.String, java.lang.String)
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*/
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public void removeNode(final String parent, final String name)
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{
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if (parent == null || name == null)
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{
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throw new AVMBadArgumentException("Illegal null argument.");
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}
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class HTxnCallback implements HibernateTxnCallback
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{
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public void perform(Session session)
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{
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fSuperRepository.setSession(session);
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fSuperRepository.remove(parent, name);
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}
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}
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HTxnCallback doit = new HTxnCallback();
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fTransaction.perform(doit, true);
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}
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/* (non-Javadoc)
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* @see org.alfresco.repo.avm.AVMService#rename(java.lang.String, java.lang.String, java.lang.String, java.lang.String)
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*/
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public void rename(final String srcParent, final String srcName, final String dstParent,
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final String dstName)
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{
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if (srcParent == null || srcName == null || dstParent == null || dstName == null)
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{
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throw new AVMBadArgumentException("Illegal null argument.");
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}
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class HTxnCallback implements HibernateTxnCallback
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{
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public void perform(Session session)
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{
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fSuperRepository.setSession(session);
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fSuperRepository.rename(srcParent, srcName, dstParent, dstName);
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}
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}
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HTxnCallback doit = new HTxnCallback();
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fTransaction.perform(doit, true);
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}
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/**
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* Uncover a deleted name in a layered directory.
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* @param dirPath The path to the layered directory.
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* @param name The name to uncover.
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*/
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public void uncover(final String dirPath, final String name)
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{
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if (dirPath == null || name == null)
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{
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throw new AVMBadArgumentException("Illegal null argument.");
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}
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class HTxnCallback implements HibernateTxnCallback
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{
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public void perform(Session session)
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{
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fSuperRepository.setSession(session);
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fSuperRepository.uncover(dirPath, name);
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}
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}
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HTxnCallback doit = new HTxnCallback();
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fTransaction.perform(doit, true);
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}
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/* (non-Javadoc)
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* @see org.alfresco.repo.avm.AVMService#getLatestVersionID(java.lang.String)
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*/
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public int getLatestVersionID(final String repName)
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{
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if (repName == null)
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{
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throw new AVMBadArgumentException("Illegal null argument.");
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}
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class HTxnCallback implements HibernateTxnCallback
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{
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public int latestVersionID;
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public void perform(Session session)
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{
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fSuperRepository.setSession(session);
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latestVersionID = fSuperRepository.getLatestVersionID(repName);
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}
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}
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HTxnCallback doit = new HTxnCallback();
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fTransaction.perform(doit, false);
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return doit.latestVersionID;
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}
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/* (non-Javadoc)
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* @see org.alfresco.repo.avm.AVMService#createSnapshot(java.util.List)
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*/
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public List<Integer> createSnapshot(final List<String> repositories)
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{
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if (repositories == null)
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{
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throw new AVMBadArgumentException("Repositories is null.");
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}
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class HTxnCallback implements HibernateTxnCallback
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{
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public List<Integer> versionIDs;
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public void perform(Session session)
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{
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fSuperRepository.setSession(session);
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versionIDs = fSuperRepository.createSnapshot(repositories);
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}
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}
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HTxnCallback doit = new HTxnCallback();
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fTransaction.perform(doit, true);
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return doit.versionIDs;
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}
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/* (non-Javadoc)
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* @see org.alfresco.repo.avm.AVMService#createSnapshot(java.lang.String)
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*/
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public int createSnapshot(final String repository)
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{
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if (repository == null)
|
|
{
|
|
throw new AVMBadArgumentException("Repository is null.");
|
|
}
|
|
class HTxnCallback implements HibernateTxnCallback
|
|
{
|
|
public int versionID;
|
|
|
|
public void perform(Session session)
|
|
{
|
|
fSuperRepository.setSession(session);
|
|
versionID = fSuperRepository.createSnapshot(repository);
|
|
}
|
|
}
|
|
HTxnCallback doit = new HTxnCallback();
|
|
fTransaction.perform(doit, true);
|
|
return doit.versionID;
|
|
}
|
|
|
|
/* (non-Javadoc)
|
|
* @see org.alfresco.repo.avm.AVMService#lookup(int, java.lang.String)
|
|
*/
|
|
public AVMNodeDescriptor lookup(final int version, final String path)
|
|
{
|
|
if (path == null)
|
|
{
|
|
throw new AVMBadArgumentException("Path is null.");
|
|
}
|
|
class HTxnCallback implements HibernateTxnCallback
|
|
{
|
|
public AVMNodeDescriptor descriptor;
|
|
|
|
public void perform(Session session)
|
|
{
|
|
fSuperRepository.setSession(session);
|
|
Lookup lookup = fSuperRepository.lookup(version, path);
|
|
descriptor = lookup.getCurrentNode().getDescriptor(lookup);
|
|
}
|
|
}
|
|
HTxnCallback doit = new HTxnCallback();
|
|
fTransaction.perform(doit, false);
|
|
return doit.descriptor;
|
|
}
|
|
|
|
/**
|
|
* Lookup a node descriptor from a directory node descriptor.
|
|
* @param dir The node descriptor of the directory.
|
|
* @param name The name to lookup.
|
|
* @return The node descriptor of the child.
|
|
*/
|
|
public AVMNodeDescriptor lookup(final AVMNodeDescriptor dir, final String name)
|
|
{
|
|
if (dir == null || name == null)
|
|
{
|
|
throw new AVMBadArgumentException("Illegal null argument.");
|
|
}
|
|
class HTxnCallback implements HibernateTxnCallback
|
|
{
|
|
public AVMNodeDescriptor child;
|
|
|
|
public void perform(Session session)
|
|
{
|
|
fSuperRepository.setSession(session);
|
|
child = fSuperRepository.lookup(dir, name);
|
|
}
|
|
}
|
|
HTxnCallback doit = new HTxnCallback();
|
|
fTransaction.perform(doit, false);
|
|
return doit.child;
|
|
}
|
|
|
|
/* (non-Javadoc)
|
|
* @see org.alfresco.repo.avm.AVMService#destroyRepository(java.lang.String)
|
|
*/
|
|
public void purgeRepository(final String name)
|
|
{
|
|
if (name == null)
|
|
{
|
|
throw new AVMBadArgumentException("Name is null.");
|
|
}
|
|
class HTxnCallback implements HibernateTxnCallback
|
|
{
|
|
public void perform(Session session)
|
|
{
|
|
fSuperRepository.setSession(session);
|
|
fSuperRepository.purgeRepository(name);
|
|
}
|
|
}
|
|
HTxnCallback doit = new HTxnCallback();
|
|
fTransaction.perform(doit, true);
|
|
}
|
|
|
|
/* (non-Javadoc)
|
|
* @see org.alfresco.repo.avm.AVMService#purgeVersion(int, java.lang.String)
|
|
*/
|
|
public void purgeVersion(final int version, final String name)
|
|
{
|
|
if (name == null)
|
|
{
|
|
throw new AVMBadArgumentException("Name is null.");
|
|
}
|
|
class HTxnCallback implements HibernateTxnCallback
|
|
{
|
|
public void perform(Session session)
|
|
{
|
|
fSuperRepository.setSession(session);
|
|
fSuperRepository.purgeVersion(name, version);
|
|
}
|
|
}
|
|
HTxnCallback doit = new HTxnCallback();
|
|
fTransaction.perform(doit, true);
|
|
}
|
|
|
|
/* (non-Javadoc)
|
|
* @see org.alfresco.repo.avm.AVMService#getIndirectionPath(java.lang.String)
|
|
*/
|
|
public String getIndirectionPath(final int version, final String path)
|
|
{
|
|
if (path == null)
|
|
{
|
|
throw new AVMBadArgumentException("Path is null.");
|
|
}
|
|
class HTxnCallback implements HibernateTxnCallback
|
|
{
|
|
public String indirectionPath;
|
|
|
|
public void perform(Session session)
|
|
{
|
|
fSuperRepository.setSession(session);
|
|
indirectionPath = fSuperRepository.getIndirectionPath(version, path);
|
|
}
|
|
}
|
|
HTxnCallback doit = new HTxnCallback();
|
|
fTransaction.perform(doit, false);
|
|
return doit.indirectionPath;
|
|
}
|
|
|
|
/* (non-Javadoc)
|
|
* @see org.alfresco.repo.avm.AVMService#getRepositoryVersions(java.lang.String)
|
|
*/
|
|
public List<VersionDescriptor> getRepositoryVersions(final String name)
|
|
{
|
|
if (name == null)
|
|
{
|
|
throw new AVMBadArgumentException("Name is null.");
|
|
}
|
|
class HTxnCallback implements HibernateTxnCallback
|
|
{
|
|
public List<VersionDescriptor> versions;
|
|
|
|
public void perform(Session session)
|
|
{
|
|
fSuperRepository.setSession(session);
|
|
versions = fSuperRepository.getRepositoryVersions(name);
|
|
}
|
|
}
|
|
HTxnCallback doit = new HTxnCallback();
|
|
fTransaction.perform(doit, false);
|
|
return doit.versions;
|
|
}
|
|
|
|
/**
|
|
* Get version IDs by creation date. From or to may be null but not
|
|
* both.
|
|
* @param name The name of the repository to search.
|
|
* @param from The earliest versions to return.
|
|
* @param to The latest versions to return.
|
|
* @return The Set of matching version IDs.
|
|
*/
|
|
public List<VersionDescriptor> getRepositoryVersions(final String name, final Date from, final Date to)
|
|
{
|
|
if (name == null || (from == null && to == null))
|
|
{
|
|
throw new AVMBadArgumentException("Illegal null argument.");
|
|
}
|
|
class HTxnCallback implements HibernateTxnCallback
|
|
{
|
|
public List<VersionDescriptor> versions;
|
|
|
|
public void perform(Session session)
|
|
{
|
|
fSuperRepository.setSession(session);
|
|
versions = fSuperRepository.getRepositoryVersions(name, from, to);
|
|
}
|
|
}
|
|
HTxnCallback doit = new HTxnCallback();
|
|
fTransaction.perform(doit, false);
|
|
return doit.versions;
|
|
}
|
|
|
|
/**
|
|
* Change what a layered directory points to.
|
|
*/
|
|
public void retargetLayeredDirectory(final String path, final String target)
|
|
{
|
|
if (path == null || target == null)
|
|
{
|
|
throw new AVMBadArgumentException("Illegal null argument.");
|
|
}
|
|
class HTxnCallback implements HibernateTxnCallback
|
|
{
|
|
public void perform(Session session)
|
|
{
|
|
fSuperRepository.setSession(session);
|
|
fSuperRepository.retargetLayeredDirectory(path, target);
|
|
}
|
|
}
|
|
HTxnCallback doit = new HTxnCallback();
|
|
fTransaction.perform(doit, true);
|
|
}
|
|
|
|
/**
|
|
* Make the indicated directory a primary indirection.
|
|
* @param path The absolute path.
|
|
*/
|
|
public void makePrimary(final String path)
|
|
{
|
|
if (path == null)
|
|
{
|
|
throw new AVMBadArgumentException("Path is null.");
|
|
}
|
|
class HTxnCallback implements HibernateTxnCallback
|
|
{
|
|
public void perform(Session session)
|
|
{
|
|
fSuperRepository.setSession(session);
|
|
fSuperRepository.makePrimary(path);
|
|
}
|
|
}
|
|
HTxnCallback doit = new HTxnCallback();
|
|
fTransaction.perform(doit, true);
|
|
}
|
|
|
|
/**
|
|
* Get a list of all Repositories.
|
|
* @return The repositories.
|
|
*/
|
|
public List<RepositoryDescriptor> getRepositories()
|
|
{
|
|
class HTxnCallback implements HibernateTxnCallback
|
|
{
|
|
public List<RepositoryDescriptor> reps;
|
|
|
|
public void perform(Session session)
|
|
{
|
|
fSuperRepository.setSession(session);
|
|
reps = fSuperRepository.getRepositories();
|
|
}
|
|
}
|
|
HTxnCallback doit = new HTxnCallback();
|
|
fTransaction.perform(doit, false);
|
|
return doit.reps;
|
|
}
|
|
|
|
/**
|
|
* Get a reposotory.
|
|
* @param name The name of the repository to get.
|
|
* @return The repositories.
|
|
*/
|
|
public RepositoryDescriptor getRepository(final String name)
|
|
{
|
|
class HTxnCallback implements HibernateTxnCallback
|
|
{
|
|
public RepositoryDescriptor desc;
|
|
|
|
public void perform(Session session)
|
|
{
|
|
fSuperRepository.setSession(session);
|
|
desc = fSuperRepository.getRepository(name);
|
|
}
|
|
}
|
|
HTxnCallback doit = new HTxnCallback();
|
|
fTransaction.perform(doit, false);
|
|
return doit.desc;
|
|
}
|
|
|
|
/**
|
|
* Get a descriptor for the specified repository root.
|
|
* @param version The version to get.
|
|
* @param name The name of the repository.
|
|
* @return The root descriptor.
|
|
*/
|
|
public AVMNodeDescriptor getRepositoryRoot(final int version, final String name)
|
|
{
|
|
if (name == null)
|
|
{
|
|
throw new AVMBadArgumentException("Name is null.");
|
|
}
|
|
class HTxnCallback implements HibernateTxnCallback
|
|
{
|
|
public AVMNodeDescriptor root;
|
|
|
|
public void perform(Session session)
|
|
{
|
|
fSuperRepository.setSession(session);
|
|
root = fSuperRepository.getRepositoryRoot(version, name);
|
|
}
|
|
}
|
|
HTxnCallback doit = new HTxnCallback();
|
|
fTransaction.perform(doit, false);
|
|
return doit.root;
|
|
}
|
|
|
|
/**
|
|
* Get the history of a node.
|
|
* @param desc The node to get history from.
|
|
* @param count The number of ancestors to fallow back. -1 means all.
|
|
* @return A List of ancestors most recent first.
|
|
*/
|
|
public List<AVMNodeDescriptor> getHistory(final AVMNodeDescriptor desc, final int count)
|
|
{
|
|
if (desc == null)
|
|
{
|
|
throw new AVMBadArgumentException("Null descriptor.");
|
|
}
|
|
class HTxnCallback implements HibernateTxnCallback
|
|
{
|
|
public List<AVMNodeDescriptor> history;
|
|
|
|
public void perform(Session session)
|
|
{
|
|
fSuperRepository.setSession(session);
|
|
history = fSuperRepository.getHistory(desc, count);
|
|
}
|
|
}
|
|
HTxnCallback doit = new HTxnCallback();
|
|
fTransaction.perform(doit, false);
|
|
return doit.history;
|
|
}
|
|
|
|
/**
|
|
* Set the opacity of a layered directory. An opaque layer hides what
|
|
* its indirection points to.
|
|
* @param path The path to the layered directory.
|
|
* @param opacity True is opaque false is not.
|
|
*/
|
|
public void setOpacity(final String path, final boolean opacity)
|
|
{
|
|
if (path == null)
|
|
{
|
|
throw new AVMBadArgumentException("Null path.");
|
|
}
|
|
class HTxnCallback implements HibernateTxnCallback
|
|
{
|
|
public void perform(Session session)
|
|
{
|
|
fSuperRepository.setSession(session);
|
|
fSuperRepository.setOpacity(path, opacity);
|
|
}
|
|
}
|
|
HTxnCallback doit = new HTxnCallback();
|
|
fTransaction.perform(doit, false);
|
|
}
|
|
|
|
/**
|
|
* Get the common ancestor of two nodes if one exists.
|
|
* @param left The first node.
|
|
* @param right The second node.
|
|
* @return The common ancestor. There are four possible results. Null means
|
|
* that there is no common ancestor. Left returned means that left is strictly
|
|
* an ancestor of right. Right returned means that right is strictly an
|
|
* ancestor of left. Any other non null return is the common ancestor and
|
|
* indicates that left and right are in conflict.
|
|
*/
|
|
public AVMNodeDescriptor getCommonAncestor(final AVMNodeDescriptor left,
|
|
final AVMNodeDescriptor right)
|
|
{
|
|
if (left == null || right == null)
|
|
{
|
|
throw new AVMBadArgumentException("Null node descriptor.");
|
|
}
|
|
class HTxnCallback implements HibernateTxnCallback
|
|
{
|
|
public AVMNodeDescriptor ancestor;
|
|
|
|
public void perform(Session session)
|
|
{
|
|
fSuperRepository.setSession(session);
|
|
ancestor = fSuperRepository.getCommonAncestor(left, right);
|
|
}
|
|
}
|
|
HTxnCallback doit = new HTxnCallback();
|
|
fTransaction.perform(doit, false);
|
|
return doit.ancestor;
|
|
}
|
|
}
|