Class BaseGridControllerWrapper<TWrapper, TMain, TPivot>

The base wrapper grid controller which works with the IBaseGridWrapperCollection<TWrapper, TMain, TPivot> view displaying wrapped items with pivotted columns in the wrapper

This is the main controller for creating grids of any wrapped item in the system that holds pivotted columns of another item in the system

Both this controller and the BaseDefaultSingleViewController<T> view have a similar mechanism for creating controls dynamically within the UI
Inheritance
System.Object
ModelViewController
BaseGridController
BaseGridControllerAny<TWrapper>
BaseGridControllerWrapper<TWrapper, TMain, TPivot>
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Namespace: LemonEdge.Client.Core.Views.Core
Assembly: ClientCore.dll
Syntax
public abstract class BaseGridControllerWrapper<TWrapper, TMain, TPivot> : BaseGridControllerAny<TWrapper>, IBaseGridController, IModelViewController, ICollectionExportable, INewGridItemImplementor<TWrapper>, ICopyGridItemImplementor<TWrapper>, IGrid, IDeleteGridItemImplementor<TWrapper> where TWrapper : class, IWrapper, new()
    where TMain : IBaseEntity where TPivot : IBaseEntity
Type Parameters
Name Description
TWrapper

The type that wraps the main and pivotted classes. Must implement all the properties of TMain and have a indexed property for the pivotted ones of TPivot. This is the entity that is displayed in the grid
TMain

The main item that is displayed in the grid via the TWrapper with additional pivotted columns of another type
TPivot

The type of entity that holds additional properties to be pivotted on the wrapper

Constructors

BaseGridControllerWrapper(IBaseGridWrapperCollection<TWrapper, TMain, TPivot>)

Creates a new base grid wrapper view controller with the specified instance of a default wrapper grid view

Declaration
public BaseGridControllerWrapper(IBaseGridWrapperCollection<TWrapper, TMain, TPivot> view)
Parameters
Type Name Description
IBaseGridWrapperCollection<TWrapper, TMain, TPivot> view

The instance of the default wrapper grid view in the client application

Properties

AllowIDFilter

If true indicates that the TMain results of this grid can be altered by parameters of type DisplayableItemDescriptorForCollectionParams against the ItemParams

The default is true, but is overridden for grids that display sub sets of information related to other items

Declaration
protected virtual bool AllowIDFilter { get; }
Property Value
Type Description
System.Boolean

DefaultRowCount

If PivotQueryDependsOnMain is true then alters the default row count to 100 if it is less than the base default row count

Default is lowered as the query to load pivot information can be quite costly if it depends on the main results, and is better with less total rows.

Declaration
public override int DefaultRowCount { get; }
Property Value
Type Description
System.Int32
Overrides
LemonEdge.Client.Core.Views.Core.BaseGridControllerAny<TWrapper>.DefaultRowCount

Headers

All the columns loaded to hold the extra properties on the TWrapper type

Declaration
protected IEnumerable<IBaseEntity> Headers { get; }
Property Value
Type Description
System.Collections.Generic.IEnumerable<IBaseEntity>

PivotColumnInfo

The details of the indexed property on the TWrapper type that holds all the values for the pivotted properties

This is used for every pivotted column created just with a different index for the different items from LoadPivotColumnHeaders()

Declaration
protected abstract (string Name, string GeneralDescription, ColumnType ColType, Type Type) PivotColumnInfo { get; }
Property Value
Type Description
System.ValueTuple<System.String, System.String, ColumnType, System.Type>

PivotQueryDependsOnMain

Indicates the pivot query depends on the main results, often filtering the pivot results by the main results

The default is true, but can be overridden for better performance

Declaration
protected virtual bool PivotQueryDependsOnMain { get; }
Property Value
Type Description
System.Boolean

Methods

AlterMainQuery(QueryableExecuter<TMain>)

Provides the inheriting controller an opportunity to modify the query used to load the data for these TMain items

Default implementation does nothing unless the type TMain is an entity with a property with a SequenceStart, in which case it is ordered by that

Declaration
protected virtual QueryableExecuter<TMain> AlterMainQuery(QueryableExecuter<TMain> query)
Parameters
Type Name Description
QueryableExecuter<TMain> query

The query for this grid to always be altered before being executed
Returns
Type Description
QueryableExecuter<TMain>

The query to be used to execute results for this grid

AlterPivotQuery(QueryableExecuter<TPivot>, IEnumerable<TMain>)

Provides the inheriting controller an opportunity to modify the query used to load the data for these TPivot items

Default implementation does nothing unless the type TPivot is an entity with a property with a SequenceStart, in which case it is ordered by that

Declaration
protected virtual QueryableExecuter<TPivot> AlterPivotQuery(QueryableExecuter<TPivot> query, IEnumerable<TMain> mainItems)
Parameters
Type Name Description
QueryableExecuter<TPivot> query

The query for this grid to always be altered before being executed
System.Collections.Generic.IEnumerable<TMain> mainItems
Returns
Type Description
QueryableExecuter<TPivot>

The query to be used to execute results for this grid

GetGridController(IBaseGridWrapperCollection<TWrapper, TMain, TPivot>)

Creates the new default wrapper grid view controller with the specified instance of a default wrapper grid view

Declaration
public static BaseGridControllerWrapper<TWrapper, TMain, TPivot> GetGridController(IBaseGridWrapperCollection<TWrapper, TMain, TPivot> view)
Parameters
Type Name Description
IBaseGridWrapperCollection<TWrapper, TMain, TPivot> view

The instance of the default wrapper grid view in the client application
Returns
Type Description
BaseGridControllerWrapper<TWrapper, TMain, TPivot>

A new default wrapper grid view controller with the specified instance of a default wrapper grid view

GetGridSourceItems()

Loads the source items (TMain) along with all the associated pivot information for those items (TPivot) and then returns the created TWrapper for displaying all that

Declaration
public override Task<IEnumerable<TWrapper>> GetGridSourceItems()
Returns
Type Description
System.Threading.Tasks.Task<System.Collections.Generic.IEnumerable<TWrapper>>

The combined loaded data of the TMain and TPivot in a wrapped TWrapper list
Overrides
LemonEdge.Client.Core.Views.Core.BaseGridControllerAny<TWrapper>.GetGridSourceItems()

GetInternalDescriptor()

Returns the entity descriptor for the type TMain

Declaration
protected override EntityDescriptor GetInternalDescriptor()
Returns
Type Description
EntityDescriptor

The entity descriptor for the type TMain
Overrides
LemonEdge.Client.Core.Views.Core.BaseGridControllerAny<TWrapper>.GetInternalDescriptor()

GetMainCreationQuery()

Returns the main intial query to return all entities of type TMain

Includes any filtering requested from parameters of type DisplayableItemDescriptorForCollectionParams against the ItemParams if AllowIDFilter is true

Also applies any paging required
Declaration
protected virtual QueryableExecuter<TMain> GetMainCreationQuery()
Returns
Type Description
QueryableExecuter<TMain>

The main intial query to return all entities of type TMain

GetMainCurrentQuery()

Returns the GetMainCreationQuery() for this entity type, with the AlterMainQuery(QueryableExecuter<TMain>) and ApplyGridSettingsToFilter(QueryableExecuter) applied

Declaration
public QueryableExecuter<TMain> GetMainCurrentQuery()
Returns
Type Description
QueryableExecuter<TMain>

The GetMainCreationQuery() for this entity type, with the AlterMainQuery(QueryableExecuter<TMain>) and ApplyGridSettingsToFilter(QueryableExecuter) applied

GetPivotCreationQuery(IEnumerable<TMain>)

Returns the main intial query to return all entities of type TPivot

The default implementation filters the TPivot items returned by those referencing the specified mainItems. Requires PivotQueryDependsOnMain to be true.

Also applies any paging required
Declaration
protected virtual QueryableExecuter<TPivot> GetPivotCreationQuery(IEnumerable<TMain> mainItems)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<TMain> mainItems
Returns
Type Description
QueryableExecuter<TPivot>

The pivot intial query to return all entities of type TPivot

GetPivotCurrentQuery(IEnumerable<TMain>)

Returns the GetPivotCreationQuery(IEnumerable<TMain>) for this entity type, with the AlterPivotQuery(QueryableExecuter<TPivot>, IEnumerable<TMain>)

Declaration
public QueryableExecuter<TPivot> GetPivotCurrentQuery(IEnumerable<TMain> mainItems)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<TMain> mainItems
Returns
Type Description
QueryableExecuter<TPivot>

The GetPivotCreationQuery(IEnumerable<TMain>) for this entity type, with the AlterPivotQuery(QueryableExecuter<TPivot>, IEnumerable<TMain>)

GetQueryForExcelResults()

The query for the results to export from this grid is the same as those to display the items -> GetMainCurrentQuery()

This is achieved if the TMain has the appropriate EntityHasPivotAttribute associated with it

Declaration
public override QueryableExecuter GetQueryForExcelResults()
Returns
Type Description
QueryableExecuter

The query for the results to export from this grid is the same as those to display the items -> GetMainCurrentQuery()
Overrides

LoadAdditionalColumns()

Loads the columns required for the pivot properties on the wrapper

Declaration
protected override Task LoadAdditionalColumns()
Returns
Type Description
System.Threading.Tasks.Task

A task indicating the completion of the operation
Overrides
LemonEdge.Client.Core.Views.Core.BaseGridControllerAny<TWrapper>.LoadAdditionalColumns()

LoadPivotColumnHeaders()

Loads the list of entities that should be the headers of the pivot columns for each extra column in the grid represented as an indexed property on TWrapper

Declaration
protected abstract Task<IEnumerable<IBaseEntity>> LoadPivotColumnHeaders()
Returns
Type Description
System.Threading.Tasks.Task<System.Collections.Generic.IEnumerable<IBaseEntity>>

The list of entities that should be the headers of the pivot columns for each extra column in the grid represented as an indexed property on TWrapper

PivotColumns(Int16)

Loads all the pivot columns to be added to the columns displayed against the IBaseGridWrapperCollection<TWrapper, TMain, TPivot>

Declaration
protected override IEnumerable<ControlDisplayInfo> PivotColumns(short index)
Parameters
Type Name Description
System.Int16 index

The index of all the columns added to the grid so far
Returns
Type Description
System.Collections.Generic.IEnumerable<ControlDisplayInfo>

All the pivot columns to be added to the columns displayed against the IBaseGridWrapperCollection<TWrapper, TMain, TPivot>
Overrides
LemonEdge.Client.Core.Views.Core.BaseGridControllerAny<TWrapper>.PivotColumns(System.Int16)

Implements

Extension Methods