Class NpgsqlSqlNullabilityProcessor

Namespace

Npgsql.EntityFrameworkCore.PostgreSQL.Query.Internal

Assembly

Npgsql.EntityFrameworkCore.PostgreSQL.dll

A class that processes a SQL tree based on nullability of nodes to apply null semantics in use and optimize it based on parameter values.

This type is typically used by database providers (and other extensions). It is generally not used in application code.

public class NpgsqlSqlNullabilityProcessor : SqlNullabilityProcessor

Inheritance

object

SqlNullabilityProcessor

NpgsqlSqlNullabilityProcessor

Inherited Members

SqlNullabilityProcessor.Process(Expression, IReadOnlyDictionary<string, object>, out bool)

SqlNullabilityProcessor.DoNotCache()

SqlNullabilityProcessor.AddNonNullableColumn(ColumnExpression)

SqlNullabilityProcessor.Visit(TableExpressionBase)

SqlNullabilityProcessor.Visit(SelectExpression)

SqlNullabilityProcessor.Visit(SelectExpression, bool)

SqlNullabilityProcessor.Visit(SqlExpression, out bool)

SqlNullabilityProcessor.Visit(SqlExpression, bool, out bool)

SqlNullabilityProcessor.VisitAtTimeZone(AtTimeZoneExpression, bool, out bool)

SqlNullabilityProcessor.VisitCase(CaseExpression, bool, out bool)

SqlNullabilityProcessor.VisitCollate(CollateExpression, bool, out bool)

SqlNullabilityProcessor.VisitColumn(ColumnExpression, bool, out bool)

SqlNullabilityProcessor.VisitDistinct(DistinctExpression, bool, out bool)

SqlNullabilityProcessor.VisitExists(ExistsExpression, bool, out bool)

SqlNullabilityProcessor.VisitIn(InExpression, bool, out bool)

SqlNullabilityProcessor.VisitLike(LikeExpression, bool, out bool)

SqlNullabilityProcessor.VisitRowNumber(RowNumberExpression, bool, out bool)

SqlNullabilityProcessor.VisitRowValue(RowValueExpression, bool, out bool)

SqlNullabilityProcessor.VisitScalarSubquery(ScalarSubqueryExpression, bool, out bool)

SqlNullabilityProcessor.VisitSqlConstant(SqlConstantExpression, bool, out bool)

SqlNullabilityProcessor.VisitSqlFragment(SqlFragmentExpression, bool, out bool)

SqlNullabilityProcessor.VisitSqlParameter(SqlParameterExpression, bool, out bool)

SqlNullabilityProcessor.VisitSqlUnary(SqlUnaryExpression, bool, out bool)

SqlNullabilityProcessor.VisitJsonScalar(JsonScalarExpression, bool, out bool)

SqlNullabilityProcessor.OptimizeNotExpression(SqlExpression)

SqlNullabilityProcessor.TryMakeNonNullable(SelectExpression, out SelectExpression, out bool?)

SqlNullabilityProcessor.IsCollectionTable(TableExpressionBase, out Expression)

SqlNullabilityProcessor.UpdateParameterCollection(TableExpressionBase, SqlParameterExpression)

SqlNullabilityProcessor.Dependencies

SqlNullabilityProcessor.UseRelationalNulls

SqlNullabilityProcessor.ParametersToConstantize

SqlNullabilityProcessor.ParameterValues

SqlNullabilityProcessor.PreferExistsToInWithCoalesce

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Constructors

NpgsqlSqlNullabilityProcessor(RelationalParameterBasedSqlProcessorDependencies, RelationalParameterBasedSqlProcessorParameters)

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 NpgsqlSqlNullabilityProcessor(RelationalParameterBasedSqlProcessorDependencies dependencies, RelationalParameterBasedSqlProcessorParameters parameters)

Parameters

dependencies RelationalParameterBasedSqlProcessorDependencies

parameters RelationalParameterBasedSqlProcessorParameters

Methods

VisitAll(PgAllExpression, bool, out bool)

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 virtual SqlExpression VisitAll(PgAllExpression allExpression, bool allowOptimizedExpansion, out bool nullable)

Parameters

allExpression PgAllExpression

allowOptimizedExpansion bool

nullable bool

Returns

SqlExpression

VisitAny(PgAnyExpression, bool, out bool)

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 virtual SqlExpression VisitAny(PgAnyExpression anyExpression, bool allowOptimizedExpansion, out bool nullable)

Parameters

anyExpression PgAnyExpression

allowOptimizedExpansion bool

nullable bool

Returns

SqlExpression

VisitArrayIndex(PgArrayIndexExpression, bool, out bool)

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 virtual SqlExpression VisitArrayIndex(PgArrayIndexExpression arrayIndexExpression, bool allowOptimizedExpansion, out bool nullable)

Parameters

arrayIndexExpression PgArrayIndexExpression

allowOptimizedExpansion bool

nullable bool

Returns

SqlExpression

VisitArraySlice(PgArraySliceExpression, bool, out bool)

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 virtual SqlExpression VisitArraySlice(PgArraySliceExpression arraySliceExpression, bool allowOptimizedExpansion, out bool nullable)

Parameters

arraySliceExpression PgArraySliceExpression

allowOptimizedExpansion bool

nullable bool

Returns

SqlExpression

VisitCustomSqlExpression(SqlExpression, bool, out bool)

Visits a custom SqlExpression added by providers and computes its nullability.

protected override SqlExpression VisitCustomSqlExpression(SqlExpression sqlExpression, bool allowOptimizedExpansion, out bool nullable)

Parameters

sqlExpression SqlExpression

A sql expression to visit.

allowOptimizedExpansion bool

A bool value indicating if optimized expansion which considers null value as false value is allowed.

nullable bool

A bool value indicating whether the sql expression is nullable.

Returns

SqlExpression

An optimized sql expression.

VisitILike(PgILikeExpression, bool, out bool)

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 virtual SqlExpression VisitILike(PgILikeExpression iLikeExpression, bool allowOptimizedExpansion, out bool nullable)

Parameters

iLikeExpression PgILikeExpression

allowOptimizedExpansion bool

nullable bool

Returns

SqlExpression

VisitJsonTraversal(PgJsonTraversalExpression, bool, out bool)

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 virtual SqlExpression VisitJsonTraversal(PgJsonTraversalExpression jsonTraversalExpression, bool allowOptimizedExpansion, out bool nullable)

Parameters

jsonTraversalExpression PgJsonTraversalExpression

allowOptimizedExpansion bool

nullable bool

Returns

SqlExpression

VisitNewArray(PgNewArrayExpression, bool, out bool)

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 virtual SqlExpression VisitNewArray(PgNewArrayExpression newArrayExpression, bool allowOptimizedExpansion, out bool nullable)

Parameters

newArrayExpression PgNewArrayExpression

allowOptimizedExpansion bool

nullable bool

Returns

SqlExpression

VisitPostgresBinary(PgBinaryExpression, bool, out bool)

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 virtual SqlExpression VisitPostgresBinary(PgBinaryExpression binaryExpression, bool allowOptimizedExpansion, out bool nullable)

Parameters

binaryExpression PgBinaryExpression

allowOptimizedExpansion bool

nullable bool

Returns

SqlExpression

VisitRegexMatch(PgRegexMatchExpression, bool, out bool)

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 virtual SqlExpression VisitRegexMatch(PgRegexMatchExpression regexMatchExpression, bool allowOptimizedExpansion, out bool nullable)

Parameters

regexMatchExpression PgRegexMatchExpression

allowOptimizedExpansion bool

nullable bool

Returns

SqlExpression

VisitRowValueExpression(PgRowValueExpression, bool, out bool)

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 virtual SqlExpression VisitRowValueExpression(PgRowValueExpression rowValueExpression, bool allowOptimizedExpansion, out bool nullable)

Parameters

rowValueExpression PgRowValueExpression

allowOptimizedExpansion bool

nullable bool

Returns

SqlExpression

VisitSqlBinary(SqlBinaryExpression, bool, out bool)

Visits a SqlBinaryExpression and computes its nullability.

protected override SqlExpression VisitSqlBinary(SqlBinaryExpression sqlBinaryExpression, bool allowOptimizedExpansion, out bool nullable)

Parameters

sqlBinaryExpression SqlBinaryExpression

A sql binary expression to visit.

allowOptimizedExpansion bool

A bool value indicating if optimized expansion which considers null value as false value is allowed.

nullable bool

A bool value indicating whether the sql expression is nullable.

Returns

SqlExpression

An optimized sql expression.

VisitSqlFunction(SqlFunctionExpression, bool, out bool)

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 SqlExpression VisitSqlFunction(SqlFunctionExpression sqlFunctionExpression, bool allowOptimizedExpansion, out bool nullable)

Parameters

sqlFunctionExpression SqlFunctionExpression

allowOptimizedExpansion bool

nullable bool

Returns

SqlExpression

VisitUnknownBinary(PgUnknownBinaryExpression, bool, out bool)

Visits a PgUnknownBinaryExpression and computes its nullability.

protected virtual SqlExpression VisitUnknownBinary(PgUnknownBinaryExpression unknownBinaryExpression, bool allowOptimizedExpansion, out bool nullable)

Parameters

unknownBinaryExpression PgUnknownBinaryExpression

A PgUnknownBinaryExpression expression to visit.

allowOptimizedExpansion bool

A bool value indicating if optimized expansion which considers null value as false value is allowed.

nullable bool

A bool value indicating whether the sql expression is nullable.

Returns

SqlExpression

An optimized sql expression.