/// <summary>
/// Returns syncronized read-only collection of all found domain objects.
/// </summary>
/// <typeparam name="TEntity">Type of entities.</typeparam>
/// <returns>Syncronized read-only collection of all found domain objects.</returns>
protected IDataObjectCollection <T> _SearchAll <TEntity>(bool asSynchronized)
where TEntity : EntityObject
{
DataObjectCollection <T, TEntity> resultCol = new DataObjectCollection <T, TEntity>(_dataService, true);
resultCol.Initialize(false, asSynchronized);
return(resultCol);
}
/// <summary>
/// Searches the table and returns read-only collection of found domain objects.
/// </summary>
/// <typeparam name="TEntity">Type of entities.</typeparam>
/// <param name="initialQuery">Intial query to the database.</param>
/// <param name="queryParams">Parameters for the query.</param>
/// <param name="filterClause">Filter clause used for syncronized data object collections.</param>
/// <returns>Collection of found domain objects. It is syncronized in <c>filterClause</c> isn't null.</returns>
protected IDataObjectCollection <T> _Search <TEntity>(string initialQuery,
ObjectParameter[] queryParams,
Expression <Func <TEntity, bool> > filterClause)
where TEntity : EntityObject
{
DataObjectCollection <T, TEntity> resultCol = new DataObjectCollection <T, TEntity>(_dataService, true);
resultCol.Initialize(initialQuery, queryParams, filterClause);
return(resultCol);
}
/// <summary>
/// Searches the table and returns read-only collection of found domain objects.
/// </summary>
/// <typeparam name="TEntity">Type of entities.</typeparam>
/// <param name="whereClause">Where clause used to search objects.</param>
/// <param name="filterClause">Filter clause used for syncronized data object collections.</param>
/// <returns>Collection of found domain objects. It is syncronized in <c>filterClause</c> isn't null.</returns>
protected IDataObjectCollection <T> _Search <TEntity>(
Expression <Func <TEntity, bool> > whereClause,
Expression <Func <TEntity, bool> > filterClause)
where TEntity : EntityObject
{
DataObjectCollection <T, TEntity> resultCol = new DataObjectCollection <T, TEntity>(_dataService, true);
resultCol.Initialize(whereClause, filterClause);
return(resultCol);
}
/// <summary>
/// Retrieves data from the specified source.
/// </summary>
/// <typeparam name="TEntity">The type of entities to be returned.</typeparam>
/// <param name="source">The source of data to be retrieved.</param>
/// <param name="filterClause">Filters new data objects for synchronized data object
/// collections.</param>
/// <returns>A read-only collection of domain objects for the specified data
/// source.</returns>
protected IDataObjectCollection <T> Query <TEntity>(
IQueryable <TEntity> source,
Expression <Func <TEntity, bool> > filterClause)
where TEntity : EntityObject
{
var objects = _dataService.FindObjects <TEntity>(source);
var result = new DataObjectCollection <T, TEntity>(_dataService, true);
result.Initialize(objects, filterClause);
return(result);
}
