public override void VisitGroupJoinClause(
[NotNull] GroupJoinClause groupJoinClause, [NotNull] QueryModel queryModel, int index)
{
Check.NotNull(groupJoinClause, nameof(groupJoinClause));
Check.NotNull(queryModel, nameof(queryModel));
var outerKeySelector
= ReplaceClauseReferences(groupJoinClause.JoinClause.OuterKeySelector, groupJoinClause);
var innerExpression
= ReplaceClauseReferences(groupJoinClause.JoinClause.InnerSequence, groupJoinClause.JoinClause);
var innerSequenceType
= innerExpression.Type.GetSequenceType();
var innerItemParameter
= Expression.Parameter(innerSequenceType);
var innerElementScoped
= innerSequenceType.IsConstructedGenericType &&
innerSequenceType.GetGenericTypeDefinition() == typeof(QuerySourceScope <>);
Type innerElementType;
if (innerElementScoped)
{
innerElementType = innerSequenceType.GetTypeInfo().GenericTypeArguments[0];
_querySourceMapping.AddMapping(
groupJoinClause.JoinClause,
QuerySourceScope.GetResult(innerItemParameter, groupJoinClause.JoinClause, innerElementType));
}
else
{
innerElementType = innerSequenceType;
_querySourceMapping.AddMapping(groupJoinClause.JoinClause, innerItemParameter);
}
var innerKeySelector
= ReplaceClauseReferences(groupJoinClause.JoinClause.InnerKeySelector, groupJoinClause);
var innerItemsParameter
= Expression.Parameter(innerExpression.Type);
_expression
= Expression.Call(
LinqOperatorProvider.GroupJoin.MakeGenericMethod(
typeof(QuerySourceScope),
innerSequenceType,
outerKeySelector.Type,
typeof(QuerySourceScope)),
_expression,
innerExpression,
Expression.Lambda(outerKeySelector, QuerySourceScopeParameter),
Expression.Lambda(innerKeySelector, innerItemParameter),
Expression.Lambda(
QuerySourceScope
.Create(
groupJoinClause,
innerElementScoped
? Expression.Call(
LinqOperatorProvider.Select
.MakeGenericMethod(
innerSequenceType,
innerElementType),
innerItemsParameter,
Expression.Lambda(
QuerySourceScope.GetResult(
innerItemParameter,
groupJoinClause.JoinClause,
innerElementType),
innerItemParameter))
: (Expression)innerItemsParameter,
QuerySourceScopeParameter),
QuerySourceScopeParameter, innerItemsParameter));
var expressionTypeInfo = _expression.Type.GetTypeInfo();
_querySourceMapping.AddMapping(
groupJoinClause,
QuerySourceScope
.GetResult(
QuerySourceScopeParameter,
groupJoinClause,
expressionTypeInfo.GetGenericTypeDefinition()
.MakeGenericType(innerElementType)));
if (expressionTypeInfo.GetGenericTypeDefinition() == typeof(IAsyncEnumerable <>))
{
queryModel.TransformExpressions(ReplaceClauseReferences);
}
}
public override void VisitGroupJoinClause(
[NotNull] GroupJoinClause groupJoinClause, [NotNull] QueryModel queryModel, int index)
{
Check.NotNull(groupJoinClause, "groupJoinClause");
Check.NotNull(queryModel, "queryModel");
var outerKeySelector
= ReplaceClauseReferences(
CreateQueryingExpressionTreeVisitor(groupJoinClause)
.VisitExpression(groupJoinClause.JoinClause.OuterKeySelector));
var innerExpression
= ReplaceClauseReferences(
CreateQueryingExpressionTreeVisitor(groupJoinClause.JoinClause)
.VisitExpression(groupJoinClause.JoinClause.InnerSequence));
var innerSequenceType
= innerExpression.Type.GetSequenceType();
var innerItemParameter
= Expression.Parameter(innerSequenceType);
var innerElementScoped
= innerSequenceType.IsConstructedGenericType &&
innerSequenceType.GetGenericTypeDefinition() == typeof(QuerySourceScope <>);
Type innerElementType;
if (innerElementScoped)
{
innerElementType = innerSequenceType.GetTypeInfo().GenericTypeArguments[0];
_querySourceMapping.AddMapping(
groupJoinClause.JoinClause,
QuerySourceScope.GetResult(innerItemParameter, groupJoinClause.JoinClause, innerElementType));
}
else
{
innerElementType = innerSequenceType;
_querySourceMapping.AddMapping(groupJoinClause.JoinClause, innerItemParameter);
}
var innerKeySelector
= ReplaceClauseReferences(
CreateQueryingExpressionTreeVisitor(groupJoinClause)
.VisitExpression(groupJoinClause.JoinClause.InnerKeySelector));
var innerItemsParameter
= Expression.Parameter(innerExpression.Type);
_expression
= Expression.Call(
_queryCompilationContext.LinqOperatorProvider.GroupJoin.MakeGenericMethod(
typeof(QuerySourceScope),
innerSequenceType,
outerKeySelector.Type,
typeof(QuerySourceScope)),
_expression,
innerExpression,
Expression.Lambda(outerKeySelector, QuerySourceScopeParameter),
Expression.Lambda(innerKeySelector, innerItemParameter),
Expression.Lambda(
QuerySourceScope
.Create(
groupJoinClause,
innerElementScoped
? Expression.Call(
_queryCompilationContext.LinqOperatorProvider.Select
.MakeGenericMethod(
innerSequenceType,
innerElementType),
innerItemsParameter,
Expression.Lambda(
QuerySourceScope.GetResult(
innerItemParameter,
groupJoinClause.JoinClause,
innerElementType),
new[] { innerItemParameter }))
: (Expression)innerItemsParameter,
QuerySourceScopeParameter),
new[] { QuerySourceScopeParameter, innerItemsParameter }));
_querySourceMapping.AddMapping(
groupJoinClause,
QuerySourceScope
.GetResult(
QuerySourceScopeParameter,
groupJoinClause,
typeof(IEnumerable <>).MakeGenericType(innerElementType)));
}
public override void VisitJoinClause(
[NotNull] JoinClause joinClause, [NotNull] QueryModel queryModel, int index)
{
Check.NotNull(joinClause, nameof(joinClause));
Check.NotNull(queryModel, nameof(queryModel));
var outerKeySelector
= ReplaceClauseReferences(joinClause.OuterKeySelector, joinClause);
var innerSequenceExpression
= ReplaceClauseReferences(joinClause.InnerSequence, joinClause);
var innerSequenceType
= innerSequenceExpression.Type.GetSequenceType();
var innerItemParameter
= Expression.Parameter(innerSequenceType);
var innerElementScoped
= innerSequenceType.IsConstructedGenericType &&
innerSequenceType.GetGenericTypeDefinition() == typeof(QuerySourceScope <>);
Type innerElementType;
if (innerElementScoped)
{
innerElementType = innerSequenceType.GetTypeInfo().GenericTypeArguments[0];
_querySourceMapping.AddMapping(
joinClause,
QuerySourceScope.GetResult(innerItemParameter, joinClause, innerElementType));
}
else
{
innerElementType = innerSequenceType;
_querySourceMapping.AddMapping(joinClause, innerItemParameter);
}
var innerKeySelector
= ReplaceClauseReferences(joinClause.InnerKeySelector, joinClause);
_expression
= Expression.Call(
LinqOperatorProvider.Join.MakeGenericMethod(
typeof(QuerySourceScope),
innerSequenceType,
outerKeySelector.Type,
typeof(QuerySourceScope)),
_expression,
innerSequenceExpression,
Expression.Lambda(outerKeySelector, QuerySourceScopeParameter),
Expression.Lambda(innerKeySelector, innerItemParameter),
Expression.Lambda(
QuerySourceScope
.Create(
joinClause,
innerElementScoped
? QuerySourceScope.GetResult(innerItemParameter, joinClause, innerElementType)
: innerItemParameter,
QuerySourceScopeParameter),
QuerySourceScopeParameter, innerItemParameter));
_querySourceMapping.ReplaceMapping(
joinClause,
QuerySourceScope.GetResult(QuerySourceScopeParameter, joinClause, innerElementType));
}
