Class OtherByteAttributeMultipleCompressedFilesOnDisk


  • public class OtherByteAttributeMultipleCompressedFilesOnDisk
    extends Attribute

    A concrete class specializing Attribute for Other Byte (OB) attributes whose values are not memory resident but rather are stored in multiple compressed files on disk.

    Whether or not decompression of compressed file format is supported is not checked until an attempt is made to write decompressed bytes.

    Which decompressor to use is determined by the file name extension (.gz for gzip, .Z for unix compress, etc., case insensitive).

    See Also:
    Attribute, AttributeFactory, AttributeList
    • Field Detail

      • files

        protected java.io.File[] files
    • Constructor Detail

      • OtherByteAttributeMultipleCompressedFilesOnDisk

        public OtherByteAttributeMultipleCompressedFilesOnDisk​(AttributeTag t)

        Construct an (empty) attribute.

        Parameters:
        t - the tag of the attribute
      • OtherByteAttributeMultipleCompressedFilesOnDisk

        public OtherByteAttributeMultipleCompressedFilesOnDisk​(AttributeTag t,
                                                               long vl,
                                                               java.io.File[] files)
                                                        throws java.io.IOException,
                                                               DicomException

        Read an attribute from a set of compressed files.

        Parameters:
        t - the tag of the attribute
        vl - the value length of the attribute
        files - the input files
        Throws:
        java.io.IOException
        DicomException
      • OtherByteAttributeMultipleCompressedFilesOnDisk

        public OtherByteAttributeMultipleCompressedFilesOnDisk​(AttributeTag t,
                                                               long vl,
                                                               java.lang.String[] fileNames)
                                                        throws java.io.IOException,
                                                               DicomException

        Read an attribute from a set of compressed files.

        Parameters:
        t - the tag of the attribute
        vl - the value length of the attribute
        fileNames - the input files
        Throws:
        java.io.IOException
        DicomException
    • Method Detail

      • getPaddedVL

        public long getPaddedVL()
        Description copied from class: Attribute

        Get the value length of this attribute, accounting for the need for even-length padding.

        Overrides:
        getPaddedVL in class Attribute
        Returns:
        the value length (padded to an even length)
      • toString

        public java.lang.String toString​(DicomDictionary dictionary)
        Description copied from class: Attribute

        Dump the contents of the attribute as a human-readable string.

        No new line is appended.

        The result is of the form:

         (0xgggg,0xeeee) Name VR=<XX> VL=<0xnnnn> <...>
         

        For example:

         (0x0018,0x0020) ScanningSequence VR=<CS> VL=<0x2> <GR>
         
        Overrides:
        toString in class Attribute
        Parameters:
        dictionary - the dictionary to use to look up the name
        Returns:
        a single String value
      • removeValues

        public void removeValues()
        Description copied from class: Attribute

        Remove any existing values, making the attribute empty (zero length).

        Specified by:
        removeValues in class Attribute
      • getVR

        public byte[] getVR()

        Get the value representation of this attribute (OB).

        Overrides:
        getVR in class Attribute
        Returns:
        'O','B' in ASCII as a two byte array; see ValueRepresentation