Examples of org.exist.storage.DBBroker

org.exist.storage.DBBroker
This is the base class for all database backends. All the basic database operations like storing, removing or index access are provided by subclasses of this class. @author Wolfgang Meier

    @Test
    public void saxEventModificationsAtXConf() throws EXistException {


        BrokerPool db = BrokerPool.getInstance();


        DBBroker broker = null;


        try {
            broker = db.get(db.getSecurityManager().getSystemSubject());


            Collection root = DatabaseManager.getCollection(BASE_URI + testCollection, "admin", "");


            IndexQueryService idxConf = (IndexQueryService) root.getService("IndexQueryService", "1.0");
            idxConf.configureCollection(COLLECTION_CONFIG);


            Resource resource = root.createResource("data.xml", "XMLResource");
            resource.setContent(DOCUMENT2_CONTENT);
            root.storeResource(resource);


            resource = root.createResource("data.xml", "XMLResource");


            assertEquals(DOCUMENT3_CONTENT, resource.getContent().toString());


        } catch (XMLDBException e) {
            e.printStackTrace();
            fail(e.getMessage());
        } finally {
            if (broker != null)
                broker.release();
        }
    }

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        throw new RemoteException("Invalid collection URI",e);
      }
    }
    public boolean createCollection(java.lang.String sessionId, XmldbURI path) throws java.rmi.RemoteException {
        final Session session = getSession(sessionId);
        DBBroker broker = null;
        final TransactionManager transact = pool.getTransactionManager();
        final Txn txn = transact.beginTransaction();
        try {
            broker = pool.get(session.getUser());
            LOG.debug("creating collection " + path);
            final org.exist.collections.Collection coll =
                    broker.getOrCreateCollection(txn, path);
            if (coll == null) {
                LOG.debug("failed to create collection");
                return false;
            }
            broker.saveCollection(txn, coll);
            transact.commit(txn);
            broker.flush();
            broker.sync(Sync.MINOR_SYNC);
            return true;
        } catch (final Exception e) {
            transact.abort(txn);
            LOG.debug(e.getMessage(), e);
            throw new RemoteException(e.getMessage());

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        throw new RemoteException("Invalid collection URI",e);
      }
    }
    public boolean removeCollection(java.lang.String sessionId, XmldbURI path) throws java.rmi.RemoteException {
        final Session session = getSession(sessionId);
        DBBroker broker = null;
        final TransactionManager transact = pool.getTransactionManager();
        final Txn txn = transact.beginTransaction();
        try {
            broker = pool.get(session.getUser());
            final Collection collection = broker.getCollection(path);
            if(collection == null) {
                transact.abort(txn);
                return false;
            }
            final boolean removed = broker.removeCollection(txn, collection);
            transact.commit(txn);
            return removed;
        } catch (final Exception e) {
            transact.abort(txn);
            LOG.debug(e.getMessage(), e);

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        throw new RemoteException("Invalid document URI",e);
      }
    }
    public boolean removeDocument(java.lang.String sessionId, XmldbURI path) throws java.rmi.RemoteException {
        final Session session = getSession(sessionId);
        DBBroker broker = null;
        final TransactionManager transact = pool.getTransactionManager();
        final Txn txn = transact.beginTransaction();
        try {
            broker = pool.get(session.getUser());
            final XmldbURI collectionUri = path.removeLastSegment();
            final XmldbURI docUri = path.lastSegment();
            if (collectionUri==null || docUri==null) {
                transact.abort(txn);
                throw new EXistException("Illegal document path");
            }
            final Collection collection = broker.getCollection(collectionUri);
            if (collection == null) {
                transact.abort(txn);
                throw new EXistException(
                        "Collection " + collectionUri + " not found");
            }

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        throw new RemoteException("Invalid document URI",e);
      }
    }
    public void store(java.lang.String sessionId, byte[] data, java.lang.String encoding, XmldbURI path, boolean replace) throws java.rmi.RemoteException {
        final Session session = getSession(sessionId);
        DBBroker broker = null;
        final TransactionManager transact = pool.getTransactionManager();
        final Txn txn = transact.beginTransaction();
        try {
            broker = pool.get(session.getUser());
            final XmldbURI collectionUri = path.removeLastSegment();
            final XmldbURI docUri = path.lastSegment();
            if (collectionUri==null || docUri==null) {
                transact.abort(txn);
                throw new EXistException("Illegal document path");
            }
            final Collection collection = broker.getCollection(collectionUri);
            if (collection == null) {
                transact.abort(txn);
                throw new EXistException("Collection " + collectionUri + " not found");
            }
            if(!replace) {

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      } catch(final URISyntaxException e) {
        throw new RemoteException("Invalid collection URI",e);
      }
    }
    public int xupdate(java.lang.String sessionId, XmldbURI collectionName, java.lang.String xupdate) throws java.rmi.RemoteException {
        DBBroker broker = null;
        final Session session = getSession(sessionId);
        final TransactionManager transact = pool.getTransactionManager();
        final Txn transaction = transact.beginTransaction();
        try {
            broker = pool.get(session.getUser());
            final Collection collection = broker.getCollection(collectionName);
            if (collection == null) {
                transact.abort(transaction);
                throw new RemoteException(
                        "collection " + collectionName + " not found");
            }
            final DocumentSet docs =
                    collection.allDocs(broker, new DefaultDocumentSet(), true);
            final XUpdateProcessor processor =
                    new XUpdateProcessor(broker, docs, AccessContext.SOAP);
            final Modification modifications[] =
                    processor.parse(new InputSource(new StringReader(xupdate)));
            long mods = 0;
            for (int i = 0; i < modifications.length; i++) {
                mods += modifications[i].process(transaction);
                broker.flush();
            }
            transact.commit(transaction);
            return (int) mods;
        } catch (final ParserConfigurationException e) {
            transact.abort(transaction);

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      } catch(final URISyntaxException e) {
        throw new RemoteException("Invalid document URI",e);
      }
    }
    public int xupdateResource(java.lang.String sessionId, XmldbURI documentName, java.lang.String xupdate) throws java.rmi.RemoteException {
        DBBroker broker = null;
        final Session session = getSession(sessionId);
        final TransactionManager transact = pool.getTransactionManager();
        final Txn transaction = transact.beginTransaction();
        try {
            broker = pool.get(session.getUser());
// TODO check XML/Binary resource
//            DocumentImpl doc = (DocumentImpl)broker.getDocument(documentName);
            final DocumentImpl doc = broker.getXMLResource(documentName, Permission.READ);
            if (doc == null) {
                transact.abort(transaction);
                throw new RemoteException(
                        "document " + documentName + " not found");
            }
            final MutableDocumentSet docs = new DefaultDocumentSet();
            docs.add(doc);
            final XUpdateProcessor processor =
                    new XUpdateProcessor(broker, docs, AccessContext.SOAP);
            final Modification modifications[] =
                    processor.parse(new InputSource(new StringReader(xupdate)));
            long mods = 0;
            for (int i = 0; i < modifications.length; i++) {
                mods += modifications[i].process(transaction);
                broker.flush();
            }
            transact.commit(transaction);
            
            // Release lock, as reported http://markmail.org/message/pau6hoaeybg2bvch 
            doc.getUpdateLock().release(Permission.READ);

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      } catch(final URISyntaxException e) {
        throw new RemoteException("Invalid document URI",e);
      }
    }
    public void storeBinary(java.lang.String sessionId, byte[] data, XmldbURI path, java.lang.String mimeType, boolean replace) throws java.rmi.RemoteException {
        DBBroker broker = null;
        final Session session = getSession(sessionId);
        Collection collection = null;
        final TransactionManager transact = pool.getTransactionManager();
        final Txn txn = transact.beginTransaction();
        try {
            broker = pool.get(session.getUser());
            final XmldbURI collectionUri = path.removeLastSegment();
            final XmldbURI docUri = path.lastSegment();
            if (collectionUri==null || docUri==null) {
                transact.abort(txn);
                throw new EXistException("Illegal document path");
            }
            collection = broker.openCollection(collectionUri, Lock.WRITE_LOCK);
            if (collection == null)
                {throw new EXistException("Collection " + collectionUri
                        + " not found");}
            if (!replace) {
                final DocumentImpl old = collection.getDocument(broker, docUri);

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      } catch(final URISyntaxException e) {
        throw new RemoteException("Invalid document URI",e);
      }
    }
    public byte[] getBinaryResource(java.lang.String sessionId, XmldbURI name) throws java.rmi.RemoteException {
        DBBroker broker = null;
        final Session session = getSession(sessionId);
        DocumentImpl doc = null;
        try {
            broker = pool.get(session.getUser());
            // TODO check XML/Binary resource
            doc = broker.getXMLResource(name, Lock.READ_LOCK);
            if (doc == null)
                {throw new EXistException("Resource " + name + " not found");}
            if (doc.getResourceType() != DocumentImpl.BINARY_FILE)
                {throw new EXistException("Document " + name
                        + " is not a binary resource");}
            if(!doc.getPermissions().validate(session.getUser(), Permission.READ))
                {throw new PermissionDeniedException("Insufficient privileges to read resource");}
            final InputStream is = broker.getBinaryResource((BinaryDocument) doc);
            final long resourceSize = broker.getBinaryResourceSize((BinaryDocument) doc);
            if(resourceSize > Integer.MAX_VALUE)
                {throw new RemoteException("Resource too big to be read using this port.");}
            final byte [] data = new byte[(int)resourceSize];
            is.read(data);
            is.close();

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      } catch(final URISyntaxException e) {
        throw new RemoteException("Invalid collection URI",e);
      }
    }
    public org.exist.soap.CollectionDesc getCollectionDesc(java.lang.String sessionId, XmldbURI collectionName) throws java.rmi.RemoteException {
        DBBroker broker = null;
        final Session session = getSession(sessionId);
        Collection collection = null;
        try {
            broker = pool.get(session.getUser());
            if (collectionName == null)
                {collectionName = XmldbURI.ROOT_COLLECTION_URI;}
            
            collection = broker.openCollection(collectionName, Lock.READ_LOCK);
            if (collection == null)
                {throw new EXistException("collection " + collectionName
                        + " not found!");}
            final CollectionDesc desc = new CollectionDesc();
            final List<DocumentDesc> docs = new ArrayList<DocumentDesc>();

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