Examples with LockedDocument org.exist.dom.persistent.LockedDocument used on opensource projects

Example 21 with LockedDocument

use of org.exist.dom.persistent.LockedDocument in project exist by eXist-db.

the class GetField method eval.

@Override
public Sequence eval(Sequence[] args, Sequence contextSequence) throws XPathException {
    XmldbURI uri = XmldbURI.createInternal(args[0].getStringValue());
    String field = args[1].getStringValue();
    try (final LockedDocument lockedDoc = context.getBroker().getXMLResource(uri, LockMode.READ_LOCK)) {
        if (lockedDoc == null) {
            return Sequence.EMPTY_SEQUENCE;
        }
        // Get the lucene worker
        final LuceneIndexWorker index = (LuceneIndexWorker) context.getBroker().getIndexController().getWorkerByIndexId(LuceneIndex.ID);
        final String content = index.getFieldContent(lockedDoc.getDocument().getDocId(), field);
        return content == null ? Sequence.EMPTY_SEQUENCE : new org.exist.xquery.value.StringValue(content);
    } catch (PermissionDeniedException e) {
        throw new XPathException(this, LuceneModule.EXXQDYFT0001, "Permission denied to read document " + args[0].getStringValue());
    } catch (IOException e) {
        throw new XPathException(this, LuceneModule.EXXQDYFT0002, "IO error while reading document " + args[0].getStringValue());
    }
}

Example 22 with LockedDocument

use of org.exist.dom.persistent.LockedDocument in project exist by eXist-db.

the class ExistDocument method unlock.

/**
 * Unlock document in database.
 */
void unlock() throws PermissionDeniedException, DocumentNotLockedException, EXistException {
    if (LOG.isDebugEnabled()) {
        LOG.debug("unlock {}", xmldbUri);
    }
    final TransactionManager txnManager = brokerPool.getTransactionManager();
    // Try to get document
    try (final DBBroker broker = brokerPool.get(Optional.ofNullable(subject));
        final Txn txn = txnManager.beginTransaction();
        final LockedDocument lockedDocument = broker.getXMLResource(xmldbUri, LockMode.WRITE_LOCK)) {
        final DocumentImpl document = lockedDocument.getDocument();
        if (document == null) {
            final String msg = String.format("No resource found for path: %s", xmldbUri);
            LOG.debug(msg);
            throw new EXistException(msg);
        }
        // Get current userlock
        Account lock = document.getUserLock();
        // Check if Resource is already locked.
        if (lock == null) {
            LOG.debug("Resource {} is not locked.", xmldbUri);
            throw new DocumentNotLockedException("" + xmldbUri);
        }
        // Check if Resource is from subject
        if (!lock.getName().equals(subject.getName()) && !subject.hasDbaRole()) {
            LOG.debug("Resource lock is from user {}", lock.getName());
            throw new PermissionDeniedException(lock.getName());
        }
        // Update document
        document.setUserLock(null);
        document.setLockToken(null);
        // Make it persistant
        broker.storeMetadata(txn, document);
        txnManager.commit(txn);
    } catch (EXistException | PermissionDeniedException e) {
        LOG.error(e);
        throw e;
    } catch (TriggerException e) {
        LOG.error(e);
        throw new EXistException(e);
    } finally {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Finished create lock");
        }
    }
}

Example 23 with LockedDocument

use of org.exist.dom.persistent.LockedDocument in project exist by eXist-db.

the class ExistDocument method initMetadata.

/**
 * Initialize Collection, authenticate() is required first
 */
@Override
public void initMetadata() {
    if (subject == null) {
        LOG.error("User not initialized yet");
        return;
    }
    // check if initialization is required
    if (isInitialized) {
        LOG.debug("Already initialized");
        return;
    }
    try (final DBBroker broker = brokerPool.get(Optional.of(subject))) {
        // If it is not a collection, check if it is a document
        try (final LockedDocument lockedDocument = broker.getXMLResource(xmldbUri, LockMode.READ_LOCK)) {
            final DocumentImpl document = lockedDocument.getDocument();
            if (document.getResourceType() == DocumentImpl.XML_FILE) {
                isXmlDocument = true;
            }
            // Get meta data
            creationTime = document.getCreated();
            lastModified = document.getLastModified();
            mimeType = document.getMimeType();
            // Retrieve perssions
            permissions = document.getPermissions();
            readAllowed = permissions.validate(subject, Permission.READ);
            writeAllowed = permissions.validate(subject, Permission.WRITE);
            executeAllowed = permissions.validate(subject, Permission.EXECUTE);
            ownerUser = permissions.getOwner().getUsername();
            ownerGroup = permissions.getGroup().getName();
            // Get (estimated) file size
            contentLength = document.getContentLength();
        }
    } catch (final EXistException | PermissionDeniedException e) {
        LOG.error(e);
    }
    isInitialized = true;
}

Example 24 with LockedDocument

use of org.exist.dom.persistent.LockedDocument in project exist by eXist-db.

the class ExistDocument method delete.

/**
 * Remove document from database.
 */
void delete() {
    if (LOG.isDebugEnabled()) {
        LOG.debug("Deleting {}", xmldbUri);
    }
    // Need to split path into collection and document name
    final XmldbURI collName = xmldbUri.removeLastSegment();
    final XmldbURI docName = xmldbUri.lastSegment();
    final TransactionManager txnManager = brokerPool.getTransactionManager();
    try (final DBBroker broker = brokerPool.get(Optional.ofNullable(subject));
        final Txn txn = txnManager.beginTransaction();
        final Collection collection = broker.openCollection(collName, LockMode.WRITE_LOCK)) {
        // Open collection if possible, else abort
        if (collection == null) {
            LOG.debug("Collection does not exist");
            txnManager.abort(txn);
            return;
        }
        // Open document if possible, else abort
        try (final LockedDocument lockedResource = collection.getDocumentWithLock(broker, docName, LockMode.WRITE_LOCK)) {
            if (lockedResource == null) {
                LOG.debug("No resource found for path: {}", xmldbUri);
                txnManager.abort(txn);
                return;
            }
            final DocumentImpl resource = lockedResource.getDocument();
            if (resource.getResourceType() == DocumentImpl.BINARY_FILE) {
                collection.removeBinaryResource(txn, broker, resource.getFileURI());
            } else {
                collection.removeXMLResource(txn, broker, resource.getFileURI());
            }
            // NOTE: early release of Collection lock inline with Asymmetrical Locking scheme
            collection.close();
            // Commit change
            txnManager.commit(txn);
            if (LOG.isDebugEnabled()) {
                LOG.debug("Document deleted sucessfully");
            }
        }
    } catch (final LockException e) {
        LOG.error("Resource is locked.", e);
    } catch (final EXistException | IOException | TriggerException | PermissionDeniedException e) {
        LOG.error(e);
    } finally {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Finished delete");
        }
    }
}

Example 25 with LockedDocument

use of org.exist.dom.persistent.LockedDocument in project exist by eXist-db.

the class ExistResourceFactory method getResourceType.

/*
     * Returns the resource type indicated by the path: either COLLECTION, DOCUMENT or NOT_EXISTING.
     */
private ResourceType getResourceType(BrokerPool brokerPool, XmldbURI xmldbUri) {
    ResourceType type = ResourceType.NOT_EXISTING;
    // MacOsX finder specific files
    String documentSeqment = xmldbUri.lastSegment().toString();
    if (documentSeqment.startsWith("._") || documentSeqment.equals(".DS_Store")) {
    // LOG.debug(String.format("Ignoring MacOSX file '%s'", xmldbUri.lastSegment().toString()));
    // return ResourceType.IGNORABLE;
    }
    // Documents that start with a dot
    if (documentSeqment.startsWith(".")) {
    // LOG.debug(String.format("Ignoring '.' file '%s'", xmldbUri.lastSegment().toString()));
    // return ResourceType.IGNORABLE;
    }
    // is performed.
    try (final DBBroker broker = brokerPool.get(Optional.of(brokerPool.getSecurityManager().getSystemSubject()));
        final Collection collection = broker.openCollection(xmldbUri, LockMode.READ_LOCK)) {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Path: {}", xmldbUri);
        }
        // First check if resource is a collection
        if (collection != null) {
            type = ResourceType.COLLECTION;
        } else {
            // If it is not a collection, check if it is a document
            try (final LockedDocument lockedDoc = broker.getXMLResource(xmldbUri, LockMode.READ_LOCK)) {
                if (lockedDoc != null) {
                    // Document is found
                    type = ResourceType.DOCUMENT;
                } else {
                    // No document and no collection.
                    type = ResourceType.NOT_EXISTING;
                }
            }
        }
    } catch (final Exception ex) {
        LOG.error("Error determining nature of resource {}", xmldbUri.toString(), ex);
        type = ResourceType.NOT_EXISTING;
    }
    if (LOG.isDebugEnabled()) {
        LOG.debug("Resource type={}", type.toString());
    }
    return type;
}