RelationalTypeMappingPostprocessor Class
Definition
Important
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A visitor executed after translation, which verifies that all SqlExpression nodes have a type mapping, and applies type mappings inferred for queryable constants (VALUES) and parameters (e.g. OPENJSON) back on their root tables.
[System.Runtime.CompilerServices.Nullable(0)]
public class RelationalTypeMappingPostprocessor : System.Linq.Expressions.ExpressionVisitor
[<System.Runtime.CompilerServices.Nullable(0)>]
type RelationalTypeMappingPostprocessor = class
inherit ExpressionVisitor
Public Class RelationalTypeMappingPostprocessor
Inherits ExpressionVisitor
- Inheritance
-
RelationalTypeMappingPostprocessor
- Attributes
Constructors
| Name | Description |
|---|---|
| RelationalTypeMappingPostprocessor(QueryTranslationPostprocessorDependencies, RelationalQueryTranslationPostprocessorDependencies, RelationalQueryCompilationContext) |
A visitor executed after translation, which verifies that all SqlExpression nodes have a type mapping, and applies type mappings inferred for queryable constants (VALUES) and parameters (e.g. OPENJSON) back on their root tables. |
Properties
| Name | Description |
|---|---|
| Dependencies |
Parameter object containing dependencies for this class. |
| QueryCompilationContext |
The query compilation context object to use. |
| RelationalDependencies |
Parameter object containing relational dependencies for this class. |
Methods
| Name | Description |
|---|---|
| ApplyTypeMappingsOnValuesExpression(ValuesExpression, Boolean) |
Applies the given type mappings to the values projected out by the given ValuesExpression. As an optimization, it can also strip the first _ord column if it's determined that it isn't needed (most cases). |
| ApplyTypeMappingsOnValuesExpression(ValuesExpression) |
Applies the given type mappings to the values projected out by the given ValuesExpression. As an optimization, it can also strip the first _ord column if it's determined that it isn't needed (most cases). |
| Process(Expression) |
Processes type mappings in the expression tree. |
| TryGetInferredTypeMapping(String, String, RelationalTypeMapping) |
Attempts to find an inferred type mapping for the given table column. |
| VisitExtension(Expression) | Visits the children of the extension expression. |