/// <summary>
/// Retrieves collection of data objects.
/// </summary>
/// <returns>
/// Collection of generic data objects. Empty collection is returned
/// if no data objects found.
/// </returns>
protected IEnumerable <T> FindAllObjects <T, TEntity>()
where T : DataObject
where TEntity : EntityObject
{
return(FindObjects <T, TEntity>(
SqlFormatHelper.FormatObjName(_entitySet)));
}
protected IEnumerable <T> FindObjects <T, TEntity>(Expression <Func <TEntity, bool> > whereClause)
where T : DataObject
where TEntity : EntityObject
{
Debug.Assert(whereClause != null);
// get objects query
ObjectQuery <TEntity> query = _context.CreateQuery <TEntity>(SqlFormatHelper.FormatObjName(_entitySet));
// find objects
IQueryable <TEntity> resultQuery = query.Where(whereClause);
List <T> list = new List <T>(_FindObjects <T, TEntity>(resultQuery));
return(list.AsReadOnly());
}
/// <summary>
/// Removes all data objects from object context.
/// </summary>
protected void RemoveAllObjects <TEntity>()
where TEntity : EntityObject
{
// remove data object from cache
//_context.Cache.Clear();
// remove entity objects from context
// EF 1.0 does not support RemoveAll functionality
// TODO: use entity SQL
ObjectQuery <TEntity> query = _context.CreateQuery <TEntity>(
SqlFormatHelper.FormatObjName(_entitySet));
foreach (TEntity entity in query)
{
_context.DeleteObject(entity);
}
}
/// <summary>
/// Returns orders planned on a date from the range, which string properties contain
/// the keyword.
/// </summary>
/// <param name="startDate">Start date used to query orders.</param>
/// <param name="endDate">Finish date used to query orders.</param>
/// <param name="keyword">The keyword to find.</param>
/// <param name="asSynchronized">Indicates whether collection remains syncronized
/// when orders are added or deleted to the project database.</param>
/// <returns>Syncronized collection of found unassigned orders for the schedule.</returns>
/// <remarks>
/// <para>Method searches in the following order properties: <c>Name</c>, <c>Address</c>,
/// <c>CustomProperties</c></para>
/// <para>Collection isn't automatically updated when some of the found orders
/// properties changes.</para>
/// </remarks>
public IDataObjectCollection <Order> SearchByKeyword(DateTime startDate,
DateTime endDate,
string keyword,
bool asSynchronized)
{
Debug.Assert(keyword != null);
Expression <Func <DataModel.Orders, bool> > filter =
((DataModel.Orders order) =>
((order.PlannedDate >= startDate && order.PlannedDate < endDate) &&
((order.Name != null && order.Name.Contains(keyword)) ||
(order.FullAddress != null && order.FullAddress.Contains(keyword)) ||
(order.Unit != null && order.Unit.Contains(keyword)) ||
(order.AddressLine != null && order.AddressLine.Contains(keyword)) ||
(order.Locality1 != null && order.Locality1.Contains(keyword)) ||
(order.Locality2 != null && order.Locality2.Contains(keyword)) ||
(order.Locality3 != null && order.Locality3.Contains(keyword)) ||
(order.CountyPrefecture != null && order.CountyPrefecture.Contains(keyword)) ||
(order.PostalCode1 != null && order.PostalCode1.Contains(keyword)) ||
(order.PostalCode2 != null && order.PostalCode2.Contains(keyword)) ||
(order.StateProvince != null && order.StateProvince.Contains(keyword)) ||
(order.Country != null && order.Country.Contains(keyword)) ||
(order.CustomProperties != null && order.CustomProperties.Contains(keyword)))));
var qp = new ObjectParameter[]
{
new ObjectParameter("start_date", startDate),
new ObjectParameter("end_date", endDate),
new ObjectParameter("keyword",
"%" + SqlFormatHelper.EscapeLikeString(keyword, '~') + "%")
};
Expression <Func <DataModel.Orders, bool> > expression = asSynchronized ? filter : null;
return(_SearchOrders(ORDERS_BY_KEYWORD, qp, expression));
}
///////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////
public ObjectQuery <TEntity> CreateDefaultQuery <TEntity>()
{
return(_context.CreateQuery <TEntity>(
SqlFormatHelper.FormatObjName(_entitySet)));
}