/// <summary>
/// The Initialize method initializes the streaming database component, preparing it for data queries.
/// </summary>
/// <param name="qt">Specifies the query type to use (see remarks).</param>
/// <param name="strSchema">Specifies the query schema to use.</param>
/// <remarks>
/// Additional settings for each query type are specified in the 'strSettings' parameter as a set
/// of key=value pairs for each of the settings. The following are the query specific settings
/// that are expected for each QUERY_TYPE.
///
/// qt = TIME:
/// 'QueryCount' - Specifies the number of items to include in each query.
/// 'Start' - Specifies the start date of the stream.
/// 'TimeSpanInMs' - Specifies the time increment between data items in the stream in milliseconds.
/// 'SegmentSize' - Specifies the segment size of data queried from the database.
/// 'MaxCount' - Specifies the maximum number of items to load into memory for each custom query.
///
/// qt = GENERAL:
/// none at this time.
///
/// The database schema defines the number of custom queries to use along with their names. A simple key=value; list
/// defines the streaming database schema using the following format:
///
/// "ConnectionCount=2;
/// Connection0_CustomQueryName=Test1;
/// Connection0_CustomQueryParam=param_string1
/// Connection1_CustomQueryName=Test2;
/// Connection1_CustomQueryParam=param_string2"
///
/// Each param_string specifies the parameters of the custom query and may include the database connection string, database
/// table, and database fields to query.
/// </remarks>
public void Initialize(QUERY_TYPE qt, string strSchema)
{
if (qt == QUERY_TYPE.SYNCHRONIZED)
{
PropertySet ps = new PropertySet(strSchema);
int nQueryCount = ps.GetPropertyAsInt("QueryCount", 0);
DateTime dtStart = ps.GetPropertyAsDateTime("Start");
int nTimeSpanInMs = ps.GetPropertyAsInt("TimeSpanInMs");
int nSegmentSize = ps.GetPropertyAsInt("SegmentSize");
int nMaxCount = ps.GetPropertyAsInt("MaxCount");
m_iquery = new MgrQueryTime(nQueryCount, dtStart, nTimeSpanInMs, nSegmentSize, nMaxCount, strSchema, m_rgCustomQueryToAdd);
}
else
{
m_iquery = new MgrQueryGeneral(strSchema, m_rgCustomQueryToAdd);
}
}
