/// <summary>
/// Creates a query view from the service provider.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="serviceProvider">The service provider.</param>
/// <returns></returns>
public static EsperQuery <T> From <T>(this EPServiceProvider serviceProvider)
{
var selectClause = SelectClause.Create();
selectClause.AddWildcard();
var objectModel = new EPStatementObjectModel();
objectModel.SelectClause = selectClause;
objectModel.FromClause = FromClause.Create();
objectModel.FromClause.Add(FilterStream.Create(typeof(T).FullName));
objectModel.MakeIterableUnbound();
return(new EsperQuery <T>(serviceProvider, objectModel));
}
/// <summary>
/// Creates a query view from the service provider.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="serviceProvider">The service provider.</param>
/// <param name="streamNames">The stream names.</param>
/// <returns></returns>
public static EsperQuery <T> From <T>(this EPServiceProvider serviceProvider, params string[] streamNames)
{
var selectClause = SelectClause.Create();
selectClause.AddWildcard();
var objectModel = new EPStatementObjectModel();
objectModel.SelectClause = selectClause;
objectModel.FromClause = FromClause.Create();
objectModel.MakeIterableUnbound();
for (int ii = 0; ii < streamNames.Length; ii++)
{
objectModel.FromClause.Add(FilterStream.Create(streamNames[ii]));
}
return(new EsperQuery <T>(serviceProvider, objectModel));
}
/// <summary>
/// Creates a query view from the service provider.
/// </summary>
/// <param name="serviceProvider">The service provider.</param>
/// <param name="typeList">The type list.</param>
/// <returns></returns>
public static EsperQuery <T> From <T>(this EPServiceProvider serviceProvider, params Type[] typeList)
{
var selectClause = SelectClause.Create();
selectClause.AddWildcard();
var objectModel = new EPStatementObjectModel();
objectModel.SelectClause = selectClause;
objectModel.FromClause = FromClause.Create();
objectModel.MakeIterableUnbound();
for (int ii = 0; ii < typeList.Length; ii++)
{
var type = typeList[ii];
var streamName = String.Format("s{0}", ii);
objectModel.FromClause.Add(FilterStream.Create(type.FullName, streamName));
}
return(new EsperQuery <T>(serviceProvider, objectModel));
}
