Class NpgsqlJsonGeometryWktReaderWriter

Namespace

Npgsql.EntityFrameworkCore.PostgreSQL.Storage.Internal

Assembly

Npgsql.EntityFrameworkCore.PostgreSQL.NetTopologySuite.dll

Reads and writes JSON using the well-known-text format for NetTopologySuite.Geometries.Geometry values.

public sealed class NpgsqlJsonGeometryWktReaderWriter : JsonValueReaderWriter<Geometry>

Inheritance

object

JsonValueReaderWriter

JsonValueReaderWriter<Geometry>

NpgsqlJsonGeometryWktReaderWriter

Inherited Members

JsonValueReaderWriter<Geometry>.FromJson(ref Utf8JsonReaderManager, object)

JsonValueReaderWriter<Geometry>.ToJson(Utf8JsonWriter, object)

JsonValueReaderWriter<Geometry>.ValueType

JsonValueReaderWriter.FromJsonString(string, object)

JsonValueReaderWriter.ToJsonString(object)

JsonValueReaderWriter.CreateFromType(Type)

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.ReferenceEquals(object, object)

object.ToString()

Properties

ConstructorExpression

The expression representing construction of this object.

public override Expression ConstructorExpression { get; }

Property Value

Expression

Instance

The singleton instance of this stateless reader/writer.

public static NpgsqlJsonGeometryWktReaderWriter Instance { get; }

Property Value

NpgsqlJsonGeometryWktReaderWriter

Methods

FromJsonTyped(ref Utf8JsonReaderManager, object?)

Reads the value from JSON.

public override Geometry FromJsonTyped(ref Utf8JsonReaderManager manager, object? existingObject = null)

Parameters

manager Utf8JsonReaderManager

The Utf8JsonReaderManager for the JSON being read.

existingObject object

Can be used to update an existing object, rather than create a new one.

Returns

Geometry

The read value.

Remarks

The CurrentReader is at the node that contains the value to be read. The value should be read as appropriate from the JSON, and then further converted as necessary.

Nulls are handled externally to this reader. That is, this method will never be called if the JSON value is "null".

In most cases, the value is represented in the JSON document as a simple property value--e.g. a number, boolean, or string. However, it could be an array or sub-document. In this case, the Utf8JsonReaderManager should be used to parse the JSON as appropriate.

ToJsonTyped(Utf8JsonWriter, Geometry)

Writes the value to JSON.

public override void ToJsonTyped(Utf8JsonWriter writer, Geometry value)

Parameters

writer Utf8JsonWriter

The Utf8JsonWriter into which the value should be written.

value Geometry

The value to write.