Class TagDecoder

java.lang.Object
com.oss.metadata.TagDecoder

public class TagDecoder extends Object
The TagDecoder class represents an array of tags which is used for SEQUENCE, SET, and CHOICE types which have multiple fields, each field containing its own tag. The TagDecoder contains an array of tags, each element of the array represents a tag for one field.
Since:
ASN.1/Java 2.1
  • Method Summary

    Modifier and Type
    Method
    Description
    int
    Returns the number of tag decoder elements in the array, or zero (0) if there is no array.
    com.oss.metadata.TagDecoderElement
    getElement(int index)
    Returns the TagDecoderElement which corresponds to the parameter index.
    int
    getFieldIndex(short tag)
    Returns the index where the ASN.1 tag can be found in the field array.
    int
    getFieldIndex(com.oss.metadata.XNamespace ns, String name, Fields fields)
    Returns the index of the field where the EXER tag can be found.
    int
    getFieldIndex(String tag, Fields fields)
    Returns the index of the field where the XML tag can be found.

    Methods inherited from class java.lang.Object

    equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
  • Method Details

    • getFieldIndex

      public int getFieldIndex(short tag)
      Returns the index where the ASN.1 tag can be found in the field array.
      Parameters:
      tag - an ASN.1 tag
      Returns:
      index of a field which corresponds to the parameter tag in the array of fields or -1 if tag was not found
    • getFieldIndex

      public int getFieldIndex(String tag, Fields fields) throws MetadataException
      Returns the index of the field where the XML tag can be found.
      Parameters:
      tag - an XML tag (field name)
      fields - array of fields which has the tag.
      Returns:
      index of a field which corresponds to the parameter tag in the array of fields or -1 if the tag was not found
      Throws:
      MetadataException
    • getFieldIndex

      public int getFieldIndex(com.oss.metadata.XNamespace ns, String name, Fields fields) throws MetadataException
      Returns the index of the field where the EXER tag can be found. The following encoding instructions are considered: NAME, NAMESPACE, ATTRIBUTE, ANY-ATTRIBUTE
      Parameters:
      ns - specifies the namespace.
      name - specifies the tag name.
      fields - array of fields which has the tag.
      Returns:
      index of a field which corresponds to the parameter tag in the array of fields or -1 if the tag was not found
      Throws:
      MetadataException
    • count

      public int count()
      Returns the number of tag decoder elements in the array, or zero (0) if there is no array.
      Returns:
      number of tag decoder elements
    • getElement

      public com.oss.metadata.TagDecoderElement getElement(int index)
      Returns the TagDecoderElement which corresponds to the parameter index.
      Parameters:
      index - an index of the tag in an array of tags
      Returns:
      TagDecoderElement which corresponds to the parameter index in the mElements or null if index is more than length of mElements