Class AggregateFunctionBuilder.AggregateComposer

Namespace

LinqToDB.Linq.Translation

Assembly

linq2db.dll

public sealed class AggregateFunctionBuilder.AggregateComposer

Inheritance

object

AggregateFunctionBuilder.AggregateComposer

Extension Methods

Sql.IsDistinctFrom<T>(T, T)

Sql.IsNotDistinctFrom<T>(T, T)

SqlExtensions.In<T>(T, T, T)

SqlExtensions.In<T>(T, T, T, T)

SqlExtensions.In<T>(T, params T[])

SqlExtensions.In<T>(T, IEnumerable<T>)

SqlExtensions.In<T>(T, IQueryable<T>)

SqlExtensions.NotIn<T>(T, T, T)

SqlExtensions.NotIn<T>(T, T, T, T)

SqlExtensions.NotIn<T>(T, params T[])

SqlExtensions.NotIn<T>(T, IEnumerable<T>)

SqlExtensions.NotIn<T>(T, IQueryable<T>)

Constructors

AggregateComposer(ISqlExpressionFactory, AggregateBuildInfo, IAggregationContext)

public AggregateComposer(ISqlExpressionFactory factory, AggregateFunctionBuilder.AggregateBuildInfo buildInfo, IAggregationContext aggregationContext)

Parameters

factory ISqlExpressionFactory

buildInfo AggregateFunctionBuilder.AggregateBuildInfo

aggregationContext IAggregationContext

Properties

AggregationContext

public IAggregationContext AggregationContext { get; }

Property Value

IAggregationContext

BuildInfo

public AggregateFunctionBuilder.AggregateBuildInfo BuildInfo { get; }

Property Value

AggregateFunctionBuilder.AggregateBuildInfo

Error

public SqlErrorExpression? Error { get; }

Property Value

SqlErrorExpression

Factory

public ISqlExpressionFactory Factory { get; }

Property Value

ISqlExpressionFactory

Fallback

public Action<AggregateFunctionBuilder.AggregateFallbackModeBuilder>? Fallback { get; }

Property Value

Action<AggregateFunctionBuilder.AggregateFallbackModeBuilder>

MaterializationCheck

public Func<Expression, Expression>? MaterializationCheck { get; }

Property Value

Func<Expression, Expression>

Result

public ISqlExpression? Result { get; }

Property Value

ISqlExpression

SqlRewriter

public Func<SqlPlaceholderExpression, SqlPlaceholderExpression>? SqlRewriter { get; }

Property Value

Func<SqlPlaceholderExpression, SqlPlaceholderExpression>

Translator

public ISqlExpressionTranslator Translator { get; }

Property Value

ISqlExpressionTranslator

Methods

GetFilteredToNullValues(out ICollection<ISqlExpression>?, out SqlErrorExpression?)

public bool GetFilteredToNullValues(out ICollection<ISqlExpression>? values, out SqlErrorExpression? error)

Parameters

values ICollection<ISqlExpression>

error SqlErrorExpression

Returns

bool

SetError(SqlErrorExpression)

public void SetError(SqlErrorExpression error)

Parameters

error SqlErrorExpression

SetFallback(Action<AggregateFallbackModeBuilder>)

public void SetFallback(Action<AggregateFunctionBuilder.AggregateFallbackModeBuilder> fallback)

Parameters

fallback Action<AggregateFunctionBuilder.AggregateFallbackModeBuilder>

SetMaterializationCheck(Func<Expression, Expression>)

Register a runtime C# check (e.g. CheckNullValue) that wraps the materialized aggregate read. Used by non-nullable Min/Max/Avg, which throw on empty input per LINQ. Invoked by AggregateExecuteContext.MakeExpression when materializing.

public void SetMaterializationCheck(Func<Expression, Expression> check)

Parameters

check Func<Expression, Expression>

SetResult(ISqlExpression)

public void SetResult(ISqlExpression sql)

Parameters

sql ISqlExpression

SetSqlRewriter(Func<SqlPlaceholderExpression, SqlPlaceholderExpression>)

Register a SQL-side rewrite that runs at OUTER APPLY lift time, after UpdateNesting has promoted the inner aggregate to a parent-side column reference — or eagerly at construction for grouped aggregates. Used by non-nullable Sum / StringJoin family to wrap the lifted reference with COALESCE(<ref>, default). The bare aggregate stays in the inner SQL tree during provider validation/optimization.

public void SetSqlRewriter(Func<SqlPlaceholderExpression, SqlPlaceholderExpression> rewriter)

Parameters

rewriter Func<SqlPlaceholderExpression, SqlPlaceholderExpression>