JsonExpressionVisitor.cs

public abstract class JsonbExpressionVisitor : ExpressionVisitor
{
	protected override Expression VisitExtension(Expression node)
	{
		var jsonbNode = node as JsonbExpression;

		return jsonbNode == null ? node : VisitJsonb(jsonbNode);
	}

	protected virtual Expression VisitJsonb(JsonbExpression node)
	{
		switch(node.JsonbType)
		{
			case JsonbType.Type1:
				return VisitJsonbType1((JsonbType1) node);
			case JsonbType.Type2:
				return VisitJsonbType2((JsonbType2) node);
			default:
				return node;
		}
	}

	protected virtual Expression VisitJsonbType1(JsonbType1 node)
	{
		// Visit node parts
	}

	protected virtual Expression VisitJsonbType2(JsonbType2 node)
	{
		// Visit node parts
	}
}