Examples with EXistException org.exist.EXistException used on opensource projects

Example 71 with EXistException

use of org.exist.EXistException in project exist by eXist-db.

the class RpcConnection method upload.

public String upload(final byte[] chunk, final int length, @Nullable String fileName, final boolean compressed) throws EXistException, IOException {
    final OpenOption[] openOptions;
    final Path tempFile;
    if (fileName == null || fileName.length() == 0) {
        // no fileName, so new file
        openOptions = new OpenOption[] { CREATE, TRUNCATE_EXISTING, WRITE };
        // create temporary file
        tempFile = TemporaryFileManager.getInstance().getTemporaryFile();
        final int handle = factory.resultSets.add(new SerializedResult(tempFile));
        fileName = Integer.toString(handle);
    } else {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Appending to file {}", fileName);
        }
        // fileName was specified so this is an append
        openOptions = new OpenOption[] { CREATE, APPEND, WRITE };
        try {
            final int handle = Integer.parseInt(fileName);
            final SerializedResult sr = factory.resultSets.getSerializedResult(handle);
            if (sr == null) {
                throw new EXistException("Invalid handle specified");
            }
            // This will keep the serialized result in the cache
            sr.touch();
            tempFile = sr.result;
        } catch (final NumberFormatException nfe) {
            throw new EXistException("Syntactically invalid handle specified");
        }
    }
    try (final OutputStream os = new BufferedOutputStream(Files.newOutputStream(tempFile, openOptions))) {
        if (compressed) {
            final int uncompressedLen = Compressor.uncompress(chunk, os);
            if (uncompressedLen != length) {
                throw new IOException("Expected " + length + " bytes of uncompressed data, but actually " + uncompressedLen);
            }
        } else {
            os.write(chunk, 0, length);
        }
    }
    return fileName;
}

Example 72 with EXistException

use of org.exist.EXistException in project exist by eXist-db.

the class RpcConnection method beginProtected.

protected LockedDocumentMap beginProtected(final DBBroker broker, final Map<String, Object> parameters) throws EXistException, PermissionDeniedException {
    final String protectColl = (String) parameters.get(RpcAPI.PROTECTED_MODE);
    if (protectColl == null) {
        return null;
    }
    int retries = BEGIN_PROTECTED_MAX_LOCKING_RETRIES == -1 ? -1 : BEGIN_PROTECTED_MAX_LOCKING_RETRIES - 2;
    do {
        MutableDocumentSet docs = null;
        final LockedDocumentMap lockedDocuments = new LockedDocumentMap();
        final LockMode documentLockMode = LockMode.WRITE_LOCK;
        final LockMode collectionLockMode = broker.getBrokerPool().getLockManager().relativeCollectionLockMode(LockMode.READ_LOCK, documentLockMode);
        try (final Collection coll = broker.openCollection(XmldbURI.createInternal(protectColl), collectionLockMode)) {
            docs = new DefaultDocumentSet();
            coll.allDocs(broker, docs, true, lockedDocuments, documentLockMode);
            return lockedDocuments;
        } catch (final LockException e) {
            LOG.warn("Deadlock detected. Starting over again. Docs: {}; locked: {}. Cause: {}", docs.getDocumentCount(), lockedDocuments.size(), e.getMessage());
            lockedDocuments.unlock();
        }
        retries--;
    } while (retries >= -1);
    throw new EXistException("Unable to beginProtected after " + BEGIN_PROTECTED_MAX_LOCKING_RETRIES + " retries");
}

Example 73 with EXistException

use of org.exist.EXistException in project exist by eXist-db.

the class RpcConnection method retrieveAllAsString.

private String retrieveAllAsString(final int resultId, final Map<String, Object> parameters) throws EXistException, PermissionDeniedException {
    return withDb((broker, transaction) -> {
        final QueryResult qr = factory.resultSets.getResult(resultId);
        if (qr == null) {
            throw new EXistException("result set unknown or timed out");
        }
        qr.touch();
        final SAXSerializer handler = (SAXSerializer) SerializerPool.getInstance().borrowObject(SAXSerializer.class);
        try (final StringWriter writer = new StringWriter()) {
            handler.setOutput(writer, toProperties(parameters));
            // serialize results
            handler.startDocument();
            handler.startPrefixMapping("exist", Namespaces.EXIST_NS);
            handler.startPrefixMapping("xs", Namespaces.SCHEMA_NS);
            final AttributesImpl attribs = new AttributesImpl();
            attribs.addAttribute("", "hitCount", "hitCount", "CDATA", Integer.toString(qr.result.getItemCount()));
            handler.startElement(Namespaces.EXIST_NS, "result", "exist:result", attribs);
            Item current;
            char[] value;
            try {
                for (final SequenceIterator i = qr.result.iterate(); i.hasNext(); ) {
                    current = i.nextItem();
                    if (Type.subTypeOf(current.getType(), Type.NODE)) {
                        current.toSAX(broker, handler, null);
                    } else {
                        final AttributesImpl typeAttr = new AttributesImpl();
                        typeAttr.addAttribute("", "type", "type", "CDATA", Type.getTypeName(current.getType()));
                        handler.startElement(Namespaces.EXIST_NS, "value", "exist:value", typeAttr);
                        value = current.toString().toCharArray();
                        handler.characters(value, 0, value.length);
                        handler.endElement(Namespaces.EXIST_NS, "value", "exist:value");
                    }
                }
            } catch (final XPathException e) {
                throw new EXistException(e);
            }
            handler.endElement(Namespaces.EXIST_NS, "result", "exist:result");
            handler.endPrefixMapping("xs");
            handler.endPrefixMapping("exist");
            handler.endDocument();
            return writer.toString();
        } finally {
            SerializerPool.getInstance().returnObject(handler);
        }
    });
}

Example 74 with EXistException

use of org.exist.EXistException in project exist by eXist-db.

the class RpcConnection method updateAccount.

/**
 * Added by {Marco.Tampucci, Massimo.Martinelli} @isti.cnr.it
 *
 * modified by Chris Tomlinson based on above updateAccount - it appears
 * that this code can rely on the SecurityManager to enforce policy about
 * whether user is or is not permitted to update the Account with name.
 *
 * This is called via RemoteUserManagementService.removeGroup(Account,
 * String)
 *
 * @param name username to update
 * @param groups a list of groups
 * @param rgroup the user will be removed from this group
 * @return true, if the action succeeded
 */
public boolean updateAccount(final String name, final List<String> groups, final String rgroup) {
    try {
        return withDb((broker, transaction) -> {
            final SecurityManager manager = broker.getBrokerPool().getSecurityManager();
            final Account u = manager.getAccount(name);
            for (final String g : groups) {
                if (g.equals(rgroup)) {
                    u.remGroup(g);
                }
            }
            return manager.updateAccount(u);
        });
    } catch (final EXistException | PermissionDeniedException ex) {
        if (LOG.isDebugEnabled()) {
            LOG.debug("removeGroup encountered error", ex);
        }
        return false;
    }
}

Example 75 with EXistException

use of org.exist.EXistException in project exist by eXist-db.

the class TriggerSystemTask method eval.

public Sequence eval(Sequence[] args, Sequence contextSequence) throws XPathException {
    final String className = args[0].getStringValue();
    final Properties properties = new Properties();
    if (args[1].hasOne()) {
        parseParameters(((NodeValue) args[1].itemAt(0)).getNode(), properties);
    }
    try {
        final Class<?> clazz = Class.forName(className);
        final Object taskObject = clazz.newInstance();
        if (!(taskObject instanceof SystemTask)) {
            final XPathException xPathException = new XPathException(this, className + " is not an instance of org.exist.storage.SystemTask");
            logger.error("Java classname is not a SystemTask", xPathException);
            throw xPathException;
        }
        final SystemTask task = (SystemTask) taskObject;
        task.configure(context.getBroker().getConfiguration(), properties);
        LOG.info("Triggering SystemTask: {}", className);
        context.getBroker().getBrokerPool().triggerSystemTask(task);
    } catch (final ClassNotFoundException e) {
        final String message = "system task class '" + className + "' not found";
        logger.error(message, e);
        throw new XPathException(this, message);
    } catch (final InstantiationException e) {
        final String message = "system task '" + className + "' can not be instantiated";
        logger.error(message, e);
        throw new XPathException(this, message);
    } catch (final IllegalAccessException e) {
        final String message = "system task '" + className + "' can not be accessed";
        logger.error(message, e);
        throw new XPathException(this, message);
    } catch (final EXistException e) {
        final String message = "system task " + className + " reported an error during initialization: ";
        logger.error(message, e);
        throw new XPathException(this, message + e.getMessage(), e);
    }
    return Sequence.EMPTY_SEQUENCE;
}