/// <summary>
/// Get the latest version for the specified topic.
/// </summary>
/// <param name="ns">Namespace of the topic.</param>
/// <param name="topicName">Name of the topic.</param>
/// <param name="connectionString">Database Connectionstring to use for this namespace.</param>
/// <returns>SqlTopicInfo containing the topic information.</returns>
public static SqlInfoForTopic GetSqlTopicInfoForLatestTopicVersion(string ns, string topicName, string connectionString)
{
SqlInfoForTopic topicInfo = null;
SqlParameter[] parameters = new SqlParameter[2];
parameters[0] = new SqlParameter("@namespace", ns);
parameters[1] = new SqlParameter("@topicName", topicName + "(%)"); // pattern for sql wild card search
using(SqlDataReader reader = SqlDataAccessHelper.ExecuteReader(connectionString, CommandType.StoredProcedure, "GetSqlTopicInfoForLatestVersion", parameters) )
{
while(reader.Read())
{
topicInfo = new SqlInfoForTopic(reader.GetString(0), reader.GetDateTime(1));
}
}
return topicInfo;
}
/// <summary>
/// Get all the non archive topics in the specified namespace.
/// </summary>
/// <param name="ns">Namespace of the topic.</param>
/// <param name="sort">Boolean value to indicate if the topics need to be sorted in the
/// descending order based on last write time.</param>
/// <param name="connectionString">Database Connectionstring to use for this namespace.</param>
/// <returns>Array of SqlTopicInfo containing the information for all non archive topics in the namespace.</returns>
public static SqlInfoForTopic[] GetSqlTopicInfoForNonArchiveTopics(string ns, bool sort, string connectionString)
{
ArrayList topicInfos = new ArrayList();
SqlParameter[] parameters = new SqlParameter[1];
parameters[0] = new SqlParameter("@namespace", ns);
string storedProcedureName = "GetSqlTopicInfoForNonArchiveTopics";
if( sort )
{
// To benefit from Sql compiled stored procedure cache using 2 different
// stored procedures instead of passing the sort value thru to Sql.
storedProcedureName = "GetSqlTopicInfoForNonArchiveTopicsSortedDescending";
}
using(SqlDataReader reader = SqlDataAccessHelper.ExecuteReader(connectionString, CommandType.StoredProcedure, storedProcedureName, parameters) )
{
while(reader.Read())
{
SqlInfoForTopic topicInfo = new SqlInfoForTopic(reader.GetString(0), reader.GetDateTime(1));
topicInfos.Add(topicInfo);
}
}
return (SqlInfoForTopic[])topicInfos.ToArray(typeof(SqlInfoForTopic));
}
/// <summary>
/// Gets all versions for the specified topic.
/// </summary>
/// <param name="ns">Namespace of the topic.</param>
/// <param name="topicName">Name of the topic to fetch the archive topics.</param>
/// <param name="connectionString">Database Connectionstring to use for this namespace.</param>
/// <returns>Array of SqlTopicInfo for all the archive versions of the specified topic.</returns>
public static SqlInfoForTopic[] GetSqlTopicInfosForTopic(string ns, string topicName, string connectionString)
{
ArrayList topicInfos = new ArrayList();
SqlParameter[] parameters = new SqlParameter[2];
parameters[0] = new SqlParameter("@namespace", ns);
parameters[1] = new SqlParameter("@topicName", topicName + "(%)"); // pattern for sql wild card search
using(SqlDataReader reader = SqlDataAccessHelper.ExecuteReader(connectionString, CommandType.StoredProcedure, "GetSqlTopicArchiveInfos", parameters) )
{
while(reader.Read())
{
SqlInfoForTopic topicInfo = new SqlInfoForTopic(reader.GetString(0), reader.GetDateTime(1));
topicInfos.Add(topicInfo);
}
}
return (SqlInfoForTopic[])topicInfos.ToArray(typeof(SqlInfoForTopic));
}
/// <summary>
/// Gets all versions for the specified topic since the specified date and including the
/// specified date.
/// </summary>
/// <param name="ns">Namespace of the topic.</param>
/// <param name="topicName">Name of the topic to fetch the archive topics.</param>
/// <param name="connectionString">Database Connectionstring to use for this namespace.</param>
/// <returns>Array of SqlTopicInfo for all the archive versions of the specified topic.</returns>
/// <summary>
/// Gets all versions for the specified topic since the specified date and including the
/// specified date.
/// </summary>
/// <param name="ns">Namespace of the topic.</param>
/// <param name="topicName">Name of the topic to fetch the archive topics.</param>
/// <param name="stamp">Datetime indicating the lower bound for topic last write time.</param>
/// <param name="connectionString">Database Connectionstring to use for this namespace.</param>
/// <returns>Array of SqlTopicInfo for all the archive versions of the specified topic.</returns>
public static SqlInfoForTopic[] GetSqlTopicInfosForTopicSince(string ns, string topicName, DateTime stamp ,string connectionString)
{
ArrayList topicInfos = new ArrayList();
SqlParameter[] parameters = new SqlParameter[3];
parameters[0] = new SqlParameter("@namespace", ns);
parameters[1] = new SqlParameter("@topicName", topicName + "(%)"); // pattern for sql wild card search
// Sql allow only dates between January 1, 1753 through December 31, 9999
if( stamp.Year > 1800 )
{
parameters[2] = new SqlParameter("@stamp", stamp);
}
else
{
parameters[2] = new SqlParameter("@stamp", new DateTime(1800,1,1));
}
using(SqlDataReader reader = SqlDataAccessHelper.ExecuteReader(connectionString, CommandType.StoredProcedure, "GetSqlTopicArchiveInfosSince", parameters) )
{
while(reader.Read())
{
SqlInfoForTopic topicInfo = new SqlInfoForTopic(reader.GetString(0), reader.GetDateTime(1));
topicInfos.Add(topicInfo);
}
}
return (SqlInfoForTopic[])topicInfos.ToArray(typeof(SqlInfoForTopic));
}
public SqlInfoTopicData(SqlInfoForTopic info, string ns)
{
_Info = info;
_Namespace = ns;
}