/// <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(ImageCacheFieldIndex 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; } return(DAOFactory.CreateImageCacheDAO().GetScalar(fields, this.Transaction, filter, relations, groupByClause)); }
/// <summary> Gets a scalar value, calculated with the aggregate. the field index specified is the field the aggregate are applied on.</summary> /// <param name="fieldIndex">Field index of field to which to apply the aggregate function and expression</param> /// <param name="aggregateToApply">Aggregate function to apply. </param> /// <returns>the scalar value requested</returns> public object GetScalar(ImageCacheFieldIndex fieldIndex, AggregateFunction aggregateToApply) { return(GetScalar(fieldIndex, null, aggregateToApply, null, null, null)); }
/// <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="groupByClause">The groupby clause to apply to retrieve the scalar</param> /// <returns>the scalar value requested</returns> public object GetScalar(ImageCacheFieldIndex fieldIndex, IExpression expressionToExecute, AggregateFunction aggregateToApply, IPredicate filter, IGroupByCollection groupByClause) { return(GetScalar(fieldIndex, expressionToExecute, aggregateToApply, filter, null, groupByClause)); }
/// <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> /// <returns>the scalar value requested</returns> public object GetScalar(ImageCacheFieldIndex fieldIndex, IExpression expressionToExecute, AggregateFunction aggregateToApply) { return(GetScalar(fieldIndex, expressionToExecute, aggregateToApply, null, null, null)); }