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

Example 6 with IWriteFileStoreHandler

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

the class AbstractTableStoreWriter method getFileStoreKeyAndFlush.

/**
 * @param cell
 * @return
 * @throws IOException
 */
public FileStoreKey getFileStoreKeyAndFlush(final DataCell cell) throws IOException {
    FileStoreKey fileStoreKey = null;
    if (cell instanceof FileStoreCell) {
        final FileStoreCell fsCell = (FileStoreCell) cell;
        FileStore fileStore = FileStoreUtil.getFileStore(fsCell);
        // TODO is the 'else' case realistic?
        if (getFileStoreHandler() instanceof IWriteFileStoreHandler) {
            fileStoreKey = getFileStoreHandler().translateToLocal(fileStore, fsCell);
        } else {
            // handler is not an IWriteFileStoreHandler but the buffer still contains file stores:
            // the flow is part of a workflow and all file stores were already properly handled
            // (this buffer is restored from disc - and then a memory alert forces the data back onto disc)
            fileStoreKey = FileStoreUtil.getFileStoreKey(fileStore);
        }
        FileStoreUtil.invokeFlush(fsCell);
    }
    return fileStoreKey;
}