/// <summary> Gets a scalar value, calculated with the aggregate and expression specified. the field index specified is the field the expression and aggregate are applied on.</summary>
/// <param name="fieldIndex">Field index of field to which to apply the aggregate function and expression</param>
/// <param name="expressionToExecute">The expression to execute. Can be null</param>
/// <param name="aggregateToApply">Aggregate function to apply. </param>
/// <param name="filter">The filter to apply to retrieve the scalar</param>
/// <param name="relations">The relations to walk</param>
/// <param name="groupByClause">The groupby clause to apply to retrieve the scalar</param>
/// <returns>the scalar value requested</returns>
public virtual object GetScalar(LoadFieldIndex fieldIndex, IExpression expressionToExecute, AggregateFunction aggregateToApply, IPredicate filter, IRelationCollection relations, IGroupByCollection groupByClause)
{
EntityFields fields = new EntityFields(1);
fields[0] = EntityFieldFactory.Create(fieldIndex);
if ((fields[0].ExpressionToApply == null) || (expressionToExecute != null))
{
fields[0].ExpressionToApply = expressionToExecute;
}
if ((fields[0].AggregateFunctionToApply == AggregateFunction.None) || (aggregateToApply != AggregateFunction.None))
{
fields[0].AggregateFunctionToApply = aggregateToApply;
}
LoadDAO dao = DAOFactory.CreateLoadDAO();
return(dao.GetScalar(fields, base.Transaction, filter, relations, groupByClause));
}
/// <summary> Retrieves in this LoadCollection object all LoadEntity objects which have data in common with the specified related Entities.
/// If one is omitted, that entity is not used as a filter. All current elements in the collection are removed from the collection.</summary>
/// <param name="employeeInstance">EmployeeEntity instance to use as a filter for the LoadEntity objects to return</param>
/// <param name="statusInstance">StatusEntity instance to use as a filter for the LoadEntity objects to return</param>
/// <param name="maxNumberOfItemsToReturn"> The maximum number of items to return with this retrieval query.</param>
/// <param name="sortClauses">The order by specifications for the sorting of the resultset. When not specified, no sorting is applied.</param>
/// <param name="filter">Extra filter to limit the resultset. Predicate expression can be null, in which case it will be ignored.</param>
/// <param name="pageNumber">The page number to retrieve.</param>
/// <param name="pageSize">The page size of the page to retrieve.</param>
/// <returns>true if succeeded, false otherwise</returns>
public virtual bool GetMultiManyToOne(IEntity employeeInstance, IEntity statusInstance, long maxNumberOfItemsToReturn, ISortExpression sortClauses, IPredicateExpression filter, int pageNumber, int pageSize)
{
bool validParameters = false;
validParameters |= (employeeInstance != null);
validParameters |= (statusInstance != null);
if (!validParameters)
{
return(GetMulti(filter, maxNumberOfItemsToReturn, sortClauses, null, pageNumber, pageSize));
}
if (!base.SuppressClearInGetMulti)
{
this.Clear();
}
LoadDAO dao = DAOFactory.CreateLoadDAO();
return(dao.GetMulti(base.Transaction, this, maxNumberOfItemsToReturn, sortClauses, base.EntityFactoryToUse, filter, employeeInstance, statusInstance, pageNumber, pageSize));
}
/// <summary> Retrieves Entity rows in a datatable which match the specified filter. It will always create a new connection to the database.</summary>
/// <param name="selectFilter">A predicate or predicate expression which should be used as filter for the entities to retrieve.</param>
/// <param name="maxNumberOfItemsToReturn"> The maximum number of items to return with this retrieval query.</param>
/// <param name="sortClauses">The order by specifications for the sorting of the resultset. When not specified, no sorting is applied.</param>
/// <param name="relations">The set of relations to walk to construct to total query.</param>
/// <param name="pageNumber">The page number to retrieve.</param>
/// <param name="pageSize">The page size of the page to retrieve.</param>
/// <returns>DataTable with the rows requested.</returns>
public static DataTable GetMultiAsDataTable(IPredicate selectFilter, long maxNumberOfItemsToReturn, ISortExpression sortClauses, IRelationCollection relations, int pageNumber, int pageSize)
{
LoadDAO dao = DAOFactory.CreateLoadDAO();
return(dao.GetMultiAsDataTable(maxNumberOfItemsToReturn, sortClauses, selectFilter, relations, pageNumber, pageSize));
}
/// <summary> Updates in the persistent storage all Load entities which have data in common with the specified related Entities. If one is omitted, that entity is not used as a filter.
/// Which fields are updated in those matching entities depends on which fields are <i>changed</i> in the passed in entity entityWithNewValues. The new values of these fields are read from entityWithNewValues. </summary>
/// <param name="entityWithNewValues">LoadEntity instance which holds the new values for the matching entities to update. Only changed fields are taken into account</param>
/// <param name="employeeInstance">EmployeeEntity instance to use as a filter for the LoadEntity objects to return</param>
/// <param name="statusInstance">StatusEntity instance to use as a filter for the LoadEntity objects to return</param>
/// <returns>Amount of entities affected, if the used persistent storage has rowcounting enabled.</returns>
public int UpdateMultiManyToOne(LoadEntity entityWithNewValues, IEntity employeeInstance, IEntity statusInstance)
{
LoadDAO dao = DAOFactory.CreateLoadDAO();
return(dao.UpdateMulti(entityWithNewValues, base.Transaction, employeeInstance, statusInstance));
}
/// <summary> Deletes from the persistent storage all Load entities which have data in common with the specified related Entities. If one is omitted, that entity is not used as a filter.</summary>
/// <remarks>Runs directly on the persistent storage. It will not delete entity objects from the current collection.</remarks>
/// <param name="employeeInstance">EmployeeEntity instance to use as a filter for the LoadEntity objects to return</param>
/// <param name="statusInstance">StatusEntity instance to use as a filter for the LoadEntity objects to return</param>
/// <returns>Amount of entities affected, if the used persistent storage has rowcounting enabled.</returns>
public int DeleteMultiManyToOne(IEntity employeeInstance, IEntity statusInstance)
{
LoadDAO dao = DAOFactory.CreateLoadDAO();
return(dao.DeleteMulti(base.Transaction, employeeInstance, statusInstance));
}