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250 lines (223 loc) · 9.09 KB
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using System.Collections.Generic;
using NpgsqlTypes;
namespace NpgsqlRest;
public readonly struct TypeDescriptor
{
public string OriginalType { get; }
public string Type { get; }
public bool IsArray { get; }
public bool IsNumeric { get; }
public bool IsJson { get; }
public bool IsDate { get; }
public bool IsDateTime { get; }
public bool IsBoolean { get; }
public bool IsText { get; }
public NpgsqlDbType DbType { get; }
public NpgsqlDbType BaseDbType { get; }
public NpgsqlDbType ActualDbType { get; }
public bool HasDefault { get; }
public bool NeedsEscape { get; }
internal TypeDescriptor(string type, bool hasDefault = false)
{
OriginalType = type;
HasDefault = hasDefault;
IsArray = type.EndsWith("[]");
Type = (IsArray ? type[..^2] : type).Trim('"');
DbType = this.GetDbType();
BaseDbType = DbType;
ActualDbType = CastToText(BaseDbType) ? NpgsqlDbType.Text : BaseDbType;
if (this.IsArray)
{
DbType |= NpgsqlDbType.Array;
ActualDbType |= NpgsqlDbType.Array;
}
IsNumeric = BaseDbType switch
{
NpgsqlDbType.Smallint => true,
NpgsqlDbType.Integer => true,
NpgsqlDbType.Bigint => true,
NpgsqlDbType.Numeric => true,
NpgsqlDbType.Real => true,
NpgsqlDbType.Double => true,
NpgsqlDbType.Money => true,
_ => false
};
IsJson = BaseDbType switch
{
NpgsqlDbType.Jsonb => true,
NpgsqlDbType.Json => true,
_ => false
};
IsDate = BaseDbType == NpgsqlDbType.Date;
IsBoolean = BaseDbType == NpgsqlDbType.Boolean;
IsDateTime = BaseDbType == NpgsqlDbType.Timestamp || BaseDbType == NpgsqlDbType.TimestampTz;
IsText = BaseDbType == NpgsqlDbType.Text ||
BaseDbType == NpgsqlDbType.Xml ||
BaseDbType == NpgsqlDbType.Varchar ||
BaseDbType == NpgsqlDbType.Char ||
BaseDbType == NpgsqlDbType.Name ||
BaseDbType == NpgsqlDbType.Jsonb ||
BaseDbType == NpgsqlDbType.Json ||
BaseDbType == NpgsqlDbType.JsonPath;
NeedsEscape = BaseDbType == NpgsqlDbType.Xml ||
BaseDbType == NpgsqlDbType.Varchar ||
BaseDbType == NpgsqlDbType.Char ||
BaseDbType == NpgsqlDbType.Name ||
BaseDbType == NpgsqlDbType.JsonPath ||
BaseDbType == NpgsqlDbType.Bytea ||
BaseDbType == NpgsqlDbType.TsQuery ||
BaseDbType == NpgsqlDbType.TsVector ||
BaseDbType == NpgsqlDbType.Citext ||
BaseDbType == NpgsqlDbType.LQuery ||
BaseDbType == NpgsqlDbType.LTree ||
BaseDbType == NpgsqlDbType.LTxtQuery ||
BaseDbType == NpgsqlDbType.TsVector ||
BaseDbType == NpgsqlDbType.Hstore;
}
internal bool IsCastToText() => CastToText(BaseDbType);
private static bool CastToText(NpgsqlDbType type) => type switch
{
NpgsqlDbType.Interval => true,
NpgsqlDbType.Bit => true,
NpgsqlDbType.Varbit => true,
NpgsqlDbType.Bytea => true,
NpgsqlDbType.Inet => true,
NpgsqlDbType.MacAddr => true,
NpgsqlDbType.Cidr => true,
NpgsqlDbType.MacAddr8 => true,
NpgsqlDbType.TsQuery => true,
NpgsqlDbType.TsVector => true,
NpgsqlDbType.Box => true,
NpgsqlDbType.Circle => true,
NpgsqlDbType.Line => true,
NpgsqlDbType.LSeg => true,
NpgsqlDbType.Path => true,
NpgsqlDbType.Point => true,
NpgsqlDbType.Polygon => true,
NpgsqlDbType.Oid => true,
NpgsqlDbType.Xid => true,
NpgsqlDbType.Xid8 => true,
NpgsqlDbType.Cid => true,
NpgsqlDbType.Regtype => true,
NpgsqlDbType.Regconfig => true,
NpgsqlDbType.IntegerRange => true,
NpgsqlDbType.BigIntRange => true,
NpgsqlDbType.NumericRange => true,
NpgsqlDbType.TimestampRange => true,
NpgsqlDbType.TimestampTzRange => true,
NpgsqlDbType.DateRange => true,
NpgsqlDbType.IntegerMultirange => true,
NpgsqlDbType.BigIntMultirange => true,
NpgsqlDbType.NumericMultirange => true,
NpgsqlDbType.TimestampMultirange => true,
NpgsqlDbType.TimestampTzMultirange => true,
NpgsqlDbType.DateMultirange => true,
NpgsqlDbType.Int2Vector => true,
NpgsqlDbType.Oidvector => true,
NpgsqlDbType.PgLsn => true,
NpgsqlDbType.Tid => true,
NpgsqlDbType.Citext => true,
NpgsqlDbType.LQuery => true,
NpgsqlDbType.LTree => true,
NpgsqlDbType.LTxtQuery => true,
NpgsqlDbType.Hstore => true,
NpgsqlDbType.Geometry => true,
NpgsqlDbType.Geography => true,
_ => false
};
private NpgsqlDbType GetDbType()
{
var result = Type switch
{
"smallint" => NpgsqlDbType.Smallint,
"integer" => NpgsqlDbType.Integer,
"bigint" => NpgsqlDbType.Bigint,
"decimal" => NpgsqlDbType.Numeric,
"numeric" => NpgsqlDbType.Numeric,
"real" => NpgsqlDbType.Real,
"double precision" => NpgsqlDbType.Double,
"int2" => NpgsqlDbType.Smallint,
"int4" => NpgsqlDbType.Integer,
"int8" => NpgsqlDbType.Bigint,
"float4" => NpgsqlDbType.Real,
"float8" => NpgsqlDbType.Double,
"money" => NpgsqlDbType.Money,
"smallserial" => NpgsqlDbType.Smallint,
"serial" => NpgsqlDbType.Integer,
"bigserial" => NpgsqlDbType.Bigint,
"text" => NpgsqlDbType.Text,
"xml" => NpgsqlDbType.Xml,
"varchar" => NpgsqlDbType.Varchar,
"character varying" => NpgsqlDbType.Varchar,
"bpchar" => NpgsqlDbType.Char,
"character" => NpgsqlDbType.Char,
"char" => NpgsqlDbType.Char,
"name" => NpgsqlDbType.Name,
"refcursor" => NpgsqlDbType.Refcursor,
"jsonb" => NpgsqlDbType.Jsonb,
"json" => NpgsqlDbType.Json,
"jsonpath" => NpgsqlDbType.JsonPath,
"timestamp" => NpgsqlDbType.Timestamp,
"timestamptz" => NpgsqlDbType.TimestampTz,
"timestamp without time zone" => NpgsqlDbType.Timestamp,
"timestamp with time zone" => NpgsqlDbType.TimestampTz,
"date" => NpgsqlDbType.Date,
"time" => NpgsqlDbType.Time,
"timetz" => NpgsqlDbType.TimeTz,
"time without time zone" => NpgsqlDbType.Time,
"time with time zone" => NpgsqlDbType.TimeTz,
"interval" => NpgsqlDbType.Interval,
"bool" => NpgsqlDbType.Boolean,
"boolean" => NpgsqlDbType.Boolean,
"bytea" => NpgsqlDbType.Bytea,
"uuid" => NpgsqlDbType.Uuid,
"bit varying" => NpgsqlDbType.Varbit,
"varbit" => NpgsqlDbType.Varbit,
"bit" => NpgsqlDbType.Bit,
"cidr" => NpgsqlDbType.Cidr,
"inet" => NpgsqlDbType.Inet,
"macaddr" => NpgsqlDbType.MacAddr,
"macaddr8" => NpgsqlDbType.MacAddr8,
"tsquery" => NpgsqlDbType.TsQuery,
"tsvector" => NpgsqlDbType.TsVector,
"box" => NpgsqlDbType.Box,
"circle" => NpgsqlDbType.Circle,
"line" => NpgsqlDbType.Line,
"lseg" => NpgsqlDbType.LSeg,
"path" => NpgsqlDbType.Path,
"point" => NpgsqlDbType.Point,
"polygon" => NpgsqlDbType.Polygon,
"oid" => NpgsqlDbType.Oid,
"xid" => NpgsqlDbType.Xid,
"xid8" => NpgsqlDbType.Xid8,
"cid" => NpgsqlDbType.Cid,
"regtype" => NpgsqlDbType.Regtype,
"regconfig" => NpgsqlDbType.Regconfig,
"int4range" => NpgsqlDbType.IntegerRange,
"int8range" => NpgsqlDbType.BigIntRange,
"numrange" => NpgsqlDbType.NumericRange,
"tsrange" => NpgsqlDbType.TimestampRange,
"tstzrange" => NpgsqlDbType.TimestampTzRange,
"daterange" => NpgsqlDbType.DateRange,
"int4multirange" => NpgsqlDbType.IntegerMultirange,
"int8multirange" => NpgsqlDbType.BigIntMultirange,
"nummultirange" => NpgsqlDbType.NumericMultirange,
"tsmultirange" => NpgsqlDbType.TimestampMultirange,
"tstzmultirange" => NpgsqlDbType.TimestampTzMultirange,
"datemultirange" => NpgsqlDbType.DateMultirange,
"int2vector" => NpgsqlDbType.Int2Vector,
"oidvector" => NpgsqlDbType.Oidvector,
"pg_lsn" => NpgsqlDbType.PgLsn,
"tid" => NpgsqlDbType.Tid,
"citext" => NpgsqlDbType.Citext,
"lquery" => NpgsqlDbType.LQuery,
"ltree" => NpgsqlDbType.LTree,
"ltxtquery" => NpgsqlDbType.LTxtQuery,
"hstore" => NpgsqlDbType.Hstore,
"geometry" => NpgsqlDbType.Geometry,
"geography" => NpgsqlDbType.Geography,
_ => NpgsqlDbType.Unknown
};
return result;
}
}
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