Package org.apache.commons.net.nntp

Class NewGroupsOrNewsQuery

  • public final class NewGroupsOrNewsQuery
extends java.lang.Object
    The NewGroupsOrNewsQuery class. This is used to issue NNTP NEWGROUPS and NEWNEWS queries, implemented by listNewNewsGroups and listNewNews respectively. It prevents you from having to format date, time, distribution, and newgroup arguments.

    You might use the class as follows: 

     query = new NewsGroupsOrNewsQuery(new GregorianCalendar(97, 11, 15), false);
 query.addDistribution("comp");
 NewsgroupInfo[] newsgroups = client.listNewgroups(query);
    This will retrieve the list of newsgroups starting with the comp. distribution prefix created since midnight 11/15/97.
    See Also:
    NNTPClient

    • Constructor Summary

      Constructors 
      Constructor Description
      NewGroupsOrNewsQuery​(java.util.Calendar date, boolean gmt)
      Creates a new query using the given time as a reference point.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void addDistribution​(java.lang.String distribution)
      Add a distribution group to the query.
      void addNewsgroup​(java.lang.String newsgroup)
      Add a newsgroup to the list of newsgroups being queried.
      java.lang.String getDate()
      Return the NNTP query formatted date (year, month, day in the form YYMMDD.
      java.lang.String getDistributions()
      Return the comma separated list of distributions.
      java.lang.String getNewsgroups()
      Return the comma separated list of newsgroups.
      java.lang.String getTime()
      Return the NNTP query formatted time (hour, minutes, seconds in the form HHMMSS.
      boolean isGMT()
      Return whether or not the query date should be treated as GMT.
      void omitNewsgroup​(java.lang.String newsgroup)
      Add a newsgroup to the list of newsgroups being queried, but indicate that group should not be checked for new news.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • NewGroupsOrNewsQuery

        public NewGroupsOrNewsQuery​(java.util.Calendar date,
                            boolean gmt)
        Creates a new query using the given time as a reference point.

        Parameters:
        date - The date since which new groups or news have arrived.
        gmt - True if the date should be considered as GMT, false if not.

    • Method Detail

      • addNewsgroup

        public void addNewsgroup​(java.lang.String newsgroup)
        Add a newsgroup to the list of newsgroups being queried. Newsgroups added this way are only meaningful to the NEWNEWS command. Newsgroup names may include the * wildcard, as in comp.lang.* or comp.lang.java.* . Adding at least one newsgroup is mandatory for the NEWNEWS command.

        Parameters:
        newsgroup - The newsgroup to add to the list of groups to be checked for new news.

      • omitNewsgroup

        public void omitNewsgroup​(java.lang.String newsgroup)
        Add a newsgroup to the list of newsgroups being queried, but indicate that group should not be checked for new news. Newsgroups added this way are only meaningful to the NEWNEWS command. Newsgroup names may include the * wildcard, as in comp.lang.* or comp.lang.java.* .

        The following would create a query that searched for new news in all comp.lang.java newsgroups except for comp.lang.java.advocacy. 

         query.addNewsgroup("comp.lang.java.*");
 query.omitNewsgroup("comp.lang.java.advocacy");

        Parameters:
        newsgroup - The newsgroup to add to the list of groups to be checked for new news, but which should be omitted from the search for new news..

      • addDistribution

        public void addDistribution​(java.lang.String distribution)
        Add a distribution group to the query. The distribution part of a newsgroup is the segment of the name preceding the first dot (e.g., comp, alt, rec). Only those newsgroups matching one of the distributions or, in the case of NEWNEWS, an article in a newsgroup matching one of the distributions, will be reported as a query result. Adding distributions is purely optional.

        Parameters:
        distribution - A distribution to add to the query.

      • getDate

        public java.lang.String getDate()
        Return the NNTP query formatted date (year, month, day in the form YYMMDD.

        Returns:
        The NNTP query formatted date.

      • getTime

        public java.lang.String getTime()
        Return the NNTP query formatted time (hour, minutes, seconds in the form HHMMSS.

        Returns:
        The NNTP query formatted time.

      • isGMT

        public boolean isGMT()
        Return whether or not the query date should be treated as GMT.

        Returns:
        True if the query date is to be treated as GMT, false if not.

      • getDistributions

        public java.lang.String getDistributions()
        Return the comma separated list of distributions. This may be null if there are no distributions.

        Returns:
        The list of distributions, which may be null if no distributions have been specified.

      • getNewsgroups

        public java.lang.String getNewsgroups()
        Return the comma separated list of newsgroups. This may be null if there are no newsgroups

        Returns:
        The list of newsgroups, which may be null if no newsgroups have been specified.