private Versions readVersions(VFSLeaf leaf, VFSLeaf fVersions) {
if (fVersions == null) {
return new NotVersioned();
}
try {
VFSContainer fVersionContainer = fVersions.getParentContainer();
VersionsFileImpl versions = (VersionsFileImpl) XStreamHelper.readObject(mystream, fVersions);
versions.setVersionFile(fVersions);
versions.setCurrentVersion((Versionable) leaf);
if (versions.getRevisionNr() == null || versions.getRevisionNr().length() == 0) {
versions.setRevisionNr(getNextRevisionNr(versions));
}
for (VFSRevision revision : versions.getRevisions()) {
RevisionFileImpl revisionImpl = (RevisionFileImpl) revision;
revisionImpl.setContainer(fVersionContainer);
}
return versions;
} catch (Exception e) {
log.warn("This file is not a versions XML file: " + fVersions, e);
fVersions.delete();
VersionsFileImpl versions = new VersionsFileImpl();
versions.setCurrentVersion((Versionable) leaf);
versions.setVersioned(isVersioned(leaf));
versions.setRevisionNr(getNextRevisionNr(versions));
log.warn("Deleted corrupt version XML file and created new version XML file: " + versions);
// the old revisions can not be restored automatically. They are still on disk, you could
// recover them
// manually. This is not a perfect solution, but at least the user does not get an RS
return versions;
}
}
/**
* Get the canonical path to the file's meta file.
*
* @param bcPath
* @return String
*/
private VFSLeaf getCanonicalVersionXmlFile(VFSItem item, boolean create) {
File f = getOriginFile(item);
if (!f.exists()) {
return null;
}
String relPath = getRelPath(item);
if (relPath == null) {
// cannot handle
return null;
}
File fVersion = new File(getRootVersionsFile(), relPath + ".xml");
File fParentVersion = fVersion.getParentFile();
if (!fParentVersion.exists() && create) {
fParentVersion.mkdirs();
}
if (fVersion.exists()) {
LocalFolderImpl localVersionContainer = new LocalFolderImpl(fParentVersion);
return (VFSLeaf) localVersionContainer.resolve(fVersion.getName());
} else if (create) {
LocalFolderImpl localVersionContainer = new LocalFolderImpl(fParentVersion);
VersionsFileImpl versions = new VersionsFileImpl();
versions.setVersioned(isVersioned(item));
versions.setRevisionNr(getNextRevisionNr(versions));
VFSLeaf fVersions = localVersionContainer.createChildLeaf(fVersion.getName());
XStreamHelper.writeObject(mystream, fVersions, versions);
return fVersions;
}
return null;
}
private Versions readVersions(VFSLeaf leaf, boolean create) {
VFSLeaf fVersions = getCanonicalVersionXmlFile(leaf, create);
if (!create && fVersions == null) {
VersionsFileImpl versions = new VersionsFileImpl();
versions.setCurrentVersion((Versionable) leaf);
versions.setVersioned(isVersioned(leaf));
versions.setRevisionNr(getNextRevisionNr(versions));
return versions;
}
return readVersions(leaf, fVersions);
}
