Examples with NotInWorkflowWriteFileStoreHandler org.knime.core.data.filestore.internal.NotInWorkflowWriteFileStoreHandler used on opensource projects

Example 6 with NotInWorkflowWriteFileStoreHandler

use of org.knime.core.data.filestore.internal.NotInWorkflowWriteFileStoreHandler in project knime-core by knime.

the class FileStoreFactory method createNotInWorkflowFileStoreFactory.

/**
 * Creates a factory whose generated file stores are not part of the workflow. It's used in isolated
 * data tables (such as used in views).
 * @param prefix the file name prefix to use when creating the {@link FileStore}
 * @return Such a new factory.
 * @since 4.1
 */
public static final FileStoreFactory createNotInWorkflowFileStoreFactory(final String prefix) {
    NotInWorkflowWriteFileStoreHandler fsh = new NotInWorkflowWriteFileStoreHandler(UUID.randomUUID());
    fsh.open();
    return new NotInWorkflowFileStoreFactory(fsh, prefix);
}

Example 7 with NotInWorkflowWriteFileStoreHandler

use of org.knime.core.data.filestore.internal.NotInWorkflowWriteFileStoreHandler in project knime-core by knime.

the class PortUtil method readObjectFromStream.

public static PortObject readObjectFromStream(final InputStream input, final ExecutionMonitor exec) throws IOException, CanceledExecutionException {
    try (ZipInputStream in = new ZipInputStream(new BufferedInputStream(input))) {
        ZipEntry entry = in.getNextEntry();
        // Check that the given input stream really specifies a port object
        if (entry == null) {
            throw new IOException("File does not specify a valid port object model");
        }
        if (!"content.xml".equals(entry.getName())) {
            throw new IOException("Invalid stream, expected zip entry \"content.xml\", got \"" + entry.getName() + "\"");
        }
        ModelContentRO toc = ModelContent.loadFromXML(new NonClosableInputStream.Zip(in));
        String specClassName = toc.getString("port_spec_class");
        String objClassName = toc.getString("port_object_class");
        // reads "objectSpec.file"
        PortObjectSpec spec = readObjectSpec(specClassName, in);
        entry = in.getNextEntry();
        if (!"object.file".equals(entry.getName())) {
            throw new IOException("Invalid stream, expected zip entry \"object.file\", got \"" + entry.getName() + "\"");
        }
        Class<? extends PortObject> cl = PortTypeRegistry.getInstance().getObjectClass(objClassName).orElseThrow(() -> new IOException("Can't load class \"" + specClassName + "\""));
        PortObject portObject;
        try (PortObjectZipInputStream objIn = getPortObjectZipInputStream(new NonClosableInputStream.Zip(in))) {
            PortObjectSerializer<?> objSer = PortTypeRegistry.getInstance().getObjectSerializer(cl.asSubclass(PortObject.class)).get();
            portObject = objSer.loadPortObject(objIn, spec, exec);
        }
        if (portObject instanceof FileStorePortObject) {
            ModelContentRO fileStoreModelContent = toc.getModelContent("filestores");
            UUID iFileStoreHandlerUUID = UUID.fromString(fileStoreModelContent.getString("handlerUUID"));
            ModelContentRO fileStoreKeysModel = fileStoreModelContent.getModelContent("port_file_store_keys");
            List<FileStoreKey> fileStoreKeys = new ArrayList<>();
            for (String key : fileStoreKeysModel.keySet()) {
                fileStoreKeys.add(FileStoreKey.load(fileStoreKeysModel.getModelContent(key)));
            }
            NotInWorkflowWriteFileStoreHandler notInWorkflowFSHandler = new NotInWorkflowWriteFileStoreHandler(iFileStoreHandlerUUID);
            entry = in.getNextEntry();
            if (entry != null && "filestores/".equals(entry.getName())) {
                File fileStoreDir = FileUtil.createTempDir("knime_fs_" + cl.getSimpleName() + "-");
                FileUtil.unzip(in, fileStoreDir, 1);
                notInWorkflowFSHandler.setBaseDir(fileStoreDir);
            }
            FileStoreUtil.retrieveFileStoreHandlerFrom((FileStorePortObject) portObject, fileStoreKeys, notInWorkflowFSHandler.getDataRepository());
        }
        return portObject;
    } catch (InvalidSettingsException ex) {
        throw new IOException("Unable to parse content.xml in port object file", ex);
    }
}