Class BaseSQLWrapperExecuter<SW, T>

A base class for executing a sql wrapper and enumerating the results

Inheritance

object

BaseSQLWrapperExecuter<SW, T>

SQLWrapperExecuter

SQLWrapperExecuter<T>

Inherited Members

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Namespace: LemonEdge.API.Entities.Helpers

Assembly: LemonEdge.API.dll

Syntax

public abstract class BaseSQLWrapperExecuter<SW, T> where SW : BaseSQLWrapperExecuter<SW, T>

Type Parameters

Name	Description
SW	The type of BaseSQLWrapperExecuter itself
T	The type of item to be enumerated when the sql wrapper is executed

Constructors

BaseSQLWrapperExecuter(ISQLWrapper, IEntityRetriever, IReadOnlyCache)

Creates a new BaseSQLWrapper for the specified sql wrapper

Declaration

public BaseSQLWrapperExecuter(ISQLWrapper sqlWrapper, IEntityRetriever retriever, IReadOnlyCache cache)

Parameters

Type	Name	Description
ISQLWrapper	sqlWrapper	The actual sql wrapper to execute
IEntityRetriever	retriever	A context to execute the sql wrapper with
IReadOnlyCache	cache	A local cache

BaseSQLWrapperExecuter(Guid, IEntityRetriever, IReadOnlyCache)

Creates a new BaseSQLWrapper for the specified sql wrapper

Declaration

public BaseSQLWrapperExecuter(Guid sqlWrapperID, IEntityRetriever retriever, IReadOnlyCache cache)

Parameters

Type	Name	Description
Guid	sqlWrapperID	The unique global id of the sql wrapper to execute
IEntityRetriever	retriever	A context to execute the sql wrapper with
IReadOnlyCache	cache	A local cache

BaseSQLWrapperExecuter(string, IEntityRetriever, IReadOnlyCache)

Creates a new BaseSQLWrapper for the specified sql wrapper

Declaration

public BaseSQLWrapperExecuter(string sqlWrapperName, IEntityRetriever retriever, IReadOnlyCache cache)

Parameters

Type	Name	Description
string	sqlWrapperName	The name of the sql wrapper to execute - must match exactly
IEntityRetriever	retriever	A context to execute the sql wrapper with
IReadOnlyCache	cache	A local cache

Fields

_params

Declaration

protected Dictionary<string, string> _params

Field Value

Type	Description
Dictionary<string, string>

_sqlWrapper

Declaration

protected ISQLWrapper _sqlWrapper

Field Value

Type	Description
ISQLWrapper

_sqlWrapperID

Declaration

protected readonly Guid? _sqlWrapperID

Field Value

Type	Description
Guid?

_sqlWrapperName

Declaration

protected readonly string _sqlWrapperName

Field Value

Type	Description
string

Properties

Cache

A local context cache

Declaration

public IReadOnlyCache Cache { get; }

Property Value

Type	Description
IReadOnlyCache

Filter

Any filters provided by the user through SetFilter(QueryableExecuter<T>) to be applied to this sql wrapper before executing it

Declaration

public QueryableExecuter<T> Filter { get; }

Property Value

Type	Description
QueryableExecuter<T>

Parameters

The parameters for running this sql wrapper query

Declaration

public Dictionary<string, string> Parameters { get; }

Property Value

Type	Description
Dictionary<string, string>

Retriever

The context the sql wrapper will be executed against

Declaration

public IEntityRetriever Retriever { get; }

Property Value

Type	Description
IEntityRetriever

Methods

AddAsOfDate(DateTimeOffset)

Adds an as of date for running the sql wrapper query as of a specified point in the past. If this is not set, it is automatically determined from the context in Retriever

Declaration

public virtual BaseSQLWrapperExecuter<SW, T> AddAsOfDate(DateTimeOffset asOfDate)

Parameters

Type	Name	Description
DateTimeOffset	asOfDate	The date to run this query as of in the past

Returns

Type	Description
BaseSQLWrapperExecuter<SW, T>	This instance, for chaining commands

AddCanvasID(Guid)

Adds the id of a canvas for running the sql wrapper query in. If this is not set, it is automatically determined from the context in Retriever

Declaration

public virtual BaseSQLWrapperExecuter<SW, T> AddCanvasID(Guid canvasID)

Parameters

Type	Name	Description
Guid	canvasID	The canvas to run this sql wrapper in

Returns

Type	Description
BaseSQLWrapperExecuter<SW, T>	This instance, for chaining commands

AddParameter(string, bool)

Adds the specified value for the specified parameter

Declaration

public BaseSQLWrapperExecuter<SW, T> AddParameter(string paramName, bool paramValue)

Parameters

Type	Name	Description
string	paramName	The unique name of the sql wrapper parameter (coming from ParameterName)
bool	paramValue	The boolean value for this parameter

Returns

Type	Description
BaseSQLWrapperExecuter<SW, T>	This instance, for chaining commands

AddParameter<V>(string, V?)

Adds the specified value for the specified parameter

Declaration

public BaseSQLWrapperExecuter<SW, T> AddParameter<V>(string paramName, V? paramValue) where V : struct

Parameters

Type	Name	Description
string	paramName	The unique name of the sql wrapper parameter (coming from ParameterName)
V?	paramValue	The nullable value for this parameter

Returns

Type	Description
BaseSQLWrapperExecuter<SW, T>	This instance, for chaining commands

Type Parameters

Name	Description
V	The type of the value

AddParameter<V>(string, V)

Adds the specified value for the specified parameter

Declaration

public BaseSQLWrapperExecuter<SW, T> AddParameter<V>(string paramName, V paramValue)

Parameters

Type	Name	Description
string	paramName	The unique name of the sql wrapper parameter (coming from ParameterName)
V	paramValue	The value for this parameter

Returns

Type	Description
BaseSQLWrapperExecuter<SW, T>	This instance, for chaining commands

Type Parameters

Name	Description
V	The type of value

AddParameters(IReadOnlyDictionary<string, string>)

Adds the specified value for the specified parameter

Declaration

public BaseSQLWrapperExecuter<SW, T> AddParameters(IReadOnlyDictionary<string, string> parameters)

Parameters

Type	Name	Description
IReadOnlyDictionary<string, string>	parameters	The parameters for this wrapper

Returns

Type	Description
BaseSQLWrapperExecuter<SW, T>	This instance, for chaining commands

ClearFilter()

Clears any existing filter for this SQL Wrapper Executer

Declaration

public BaseSQLWrapperExecuter<SW, T> ClearFilter()

Returns

Type	Description
BaseSQLWrapperExecuter<SW, T>	This instance, for chaining commands

ClearParameters()

Clears all parameters

Declaration

public BaseSQLWrapperExecuter<SW, T> ClearParameters()

Returns

Type	Description
BaseSQLWrapperExecuter<SW, T>	This instance, for chaining commands

Execute(CancellationToken)

Executes this sql wrapper using the provided parameters and filter

Declaration

public abstract Task<IEnumerable<T>> Execute(CancellationToken token = default)

Parameters

Type	Name	Description
CancellationToken	token

Returns

Type	Description
Task<IEnumerable<T>>	An enumeration of the results for this sql wrapper execution

ExecuteCount()

Executes the count of the results of this sql wrapper using the provided parameters and filter

Declaration

public abstract Task<int> ExecuteCount()

Returns

Type	Description
Task<int>	The count of results for executing this sql wrapper with the provided parameters and filter

GetFilter()

By default returns the current Filter specified for this sql wrapper executer.

Can be overridden by inheriting classes to provide a default filter if the current filter is null and has not been provided

Declaration

protected virtual QueryableExecuter<T> GetFilter()

Returns

Type	Description
QueryableExecuter<T>	The filters to be applicaed before executing this sql wrapper executer

GetQueryArgumentsAndFilter()

Declaration

protected (string paramArguments, string queryFilter) GetQueryArgumentsAndFilter()

Returns

Type	Description
(string paramArguments, string queryFilter)

GetWrapper()

Returns the SQL Wrapper to be executed.

This executer may have been created with just the id or name of a sql wrapper, in which case it has to load it from the cache before it can return it

Declaration

public Task<ISQLWrapper> GetWrapper()

Returns

Type	Description
Task<ISQLWrapper>	The SQL Wrapper to be executed.

ParametersAreValid()

Indicates if the parameters for running this sql wrapper executer are valid.

If invalid the GetQueryArgumentsAndFilter() method will throw an exception

Declaration

protected virtual bool ParametersAreValid()

Returns

Type	Description
bool	True if the current parameters for this query are valid, false if not

SetFilter(QueryableExecuter<T>)

Sets the specified filter to be incorporated into the sql wrapper while executed to efficiently filter the results being returned

Declaration

public BaseSQLWrapperExecuter<SW, T> SetFilter(QueryableExecuter<T> filter)

Parameters

Type	Name	Description
QueryableExecuter<T>	filter	A QueryableExecuter holding the filter to be applied to this SQL Wrapper Executer before executing it

Returns

Type	Description
BaseSQLWrapperExecuter<SW, T>	This instance, for chaining commands

Extension Methods

LinqExtensions.AsArray<T>(T)

LinqExtensions.ToArrayOfOne<T>(T)

LinqExtensions.ToListOfOne<T>(T)

MiscExtensions.SetIfNotEqual<T, TP>(T, Expression<Func<T, TP>>, TP)

WeakReferenceExtensions.WeakReference(object)

SQLExtensions.ToSQLValue(object, bool)

ReflectionExtensions.ClearEventInvocations(object, string)

StringExtensions.ToCSVFormatString(object, Type)