Interface SupportsPrefixOperations

  • All Superinterfaces:
    java.lang.AutoCloseable, java.io.Closeable, FileIO, java.io.Serializable
    All Known Implementing Classes:
    HadoopFileIO, S3FileIO

    public interface SupportsPrefixOperations
    extends FileIO
    This interface is intended as an extension for FileIO implementations to provide additional prefix based operations that may be useful in performing supporting operations.
    • Method Detail

      • listPrefix

        java.lang.Iterable<FileInfo> listPrefix​(java.lang.String prefix)
        Return an iterable of all files under a prefix.

        Hierarchical file systems (e.g. HDFS) may impose additional restrictions like the prefix must fully match a directory whereas key/value object stores may allow for arbitrary prefixes.

        Parameters:
        prefix - prefix to list
        Returns:
        iterable of file information
      • deletePrefix

        void deletePrefix​(java.lang.String prefix)
        Delete all files under a prefix.

        Hierarchical file systems (e.g. HDFS) may impose additional restrictions like the prefix must fully match a directory whereas key/value object stores may allow for arbitrary prefixes.

        Parameters:
        prefix - prefix to delete