# Class NpgsqlQueryTranslationPreprocessor

Namespace
  Npgsql.EntityFrameworkCore.PostgreSQL.Query.Internal

Assembly
  Npgsql.EntityFrameworkCore.PostgreSQL.dll

This is an internal API that supports the Entity Framework Core infrastructure and not subject to the same compatibility standards as public APIs. It may be changed or removed without notice in any release. You should only use it directly in your code with extreme caution and knowing that doing so can result in application failures when updating to a new Entity Framework Core release.

    public class NpgsqlQueryTranslationPreprocessor : RelationalQueryTranslationPreprocessor

Inheritance
  object
  QueryTranslationPreprocessor
  RelationalQueryTranslationPreprocessor
  NpgsqlQueryTranslationPreprocessor

Inherited Members
  RelationalQueryTranslationPreprocessor.NormalizeQueryableMethod(Expression)
  RelationalQueryTranslationPreprocessor.RelationalDependencies
  QueryTranslationPreprocessor.Process(Expression)
  QueryTranslationPreprocessor.Dependencies
  QueryTranslationPreprocessor.QueryCompilationContext
  object.Equals(object)
  object.Equals(object, object)
  object.GetHashCode()
  object.GetType()
  object.MemberwiseClone()
  object.ReferenceEquals(object, object)
  object.ToString()

## Constructors

### NpgsqlQueryTranslationPreprocessor(QueryTranslationPreprocessorDependencies, RelationalQueryTranslationPreprocessorDependencies, INpgsqlSingletonOptions, QueryCompilationContext)

This is an internal API that supports the Entity Framework Core infrastructure and not subject to the same compatibility standards as public APIs. It may be changed or removed without notice in any release. You should only use it directly in your code with extreme caution and knowing that doing so can result in application failures when updating to a new Entity Framework Core release.

    public NpgsqlQueryTranslationPreprocessor(QueryTranslationPreprocessorDependencies dependencies, RelationalQueryTranslationPreprocessorDependencies relationalDependencies, INpgsqlSingletonOptions npgsqlSingletonOptions, QueryCompilationContext queryCompilationContext)

#### Parameters

`dependencies` QueryTranslationPreprocessorDependencies
`relationalDependencies` RelationalQueryTranslationPreprocessorDependencies
`npgsqlSingletonOptions` INpgsqlSingletonOptions
`queryCompilationContext` QueryCompilationContext

## Methods

### ProcessQueryRoots(Expression)

This is an internal API that supports the Entity Framework Core infrastructure and not subject to the same compatibility standards as public APIs. It may be changed or removed without notice in any release. You should only use it directly in your code with extreme caution and knowing that doing so can result in application failures when updating to a new Entity Framework Core release.

    protected override Expression ProcessQueryRoots(Expression expression)

#### Parameters

`expression` Expression

#### Returns

Expression