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Because reading a record type requires the decoder to be able to look up oid to type mapping and types such as hstore have types that are not fixed between different PostgreSQL servers it was necessary to restructure the pgtype system so all encoders and decodes take a *ConnInfo that includes oid/name/type information.
55 lines
1.5 KiB
Go
55 lines
1.5 KiB
Go
package pgtype
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import (
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"io"
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)
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// Xid is PostgreSQL's Transaction ID type.
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//
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// In later versions of PostgreSQL, it is the type used for the backend_xid
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// and backend_xmin columns of the pg_stat_activity system view.
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//
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// Also, when one does
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//
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// select xmin, xmax, * from some_table;
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//
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// it is the data type of the xmin and xmax hidden system columns.
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//
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// It is currently implemented as an unsigned four byte integer.
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// Its definition can be found in src/include/postgres_ext.h as TransactionId
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// in the PostgreSQL sources.
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type Xid pguint32
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// Set converts from src to dst. Note that as Xid is not a general
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// number type Set does not do automatic type conversion as other number
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// types do.
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func (dst *Xid) Set(src interface{}) error {
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return (*pguint32)(dst).Set(src)
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}
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func (dst *Xid) Get() interface{} {
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return (*pguint32)(dst).Get()
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}
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// AssignTo assigns from src to dst. Note that as Xid is not a general number
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// type AssignTo does not do automatic type conversion as other number types do.
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func (src *Xid) AssignTo(dst interface{}) error {
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return (*pguint32)(src).AssignTo(dst)
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}
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func (dst *Xid) DecodeText(ci *ConnInfo, src []byte) error {
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return (*pguint32)(dst).DecodeText(ci, src)
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}
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func (dst *Xid) DecodeBinary(ci *ConnInfo, src []byte) error {
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return (*pguint32)(dst).DecodeBinary(ci, src)
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}
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func (src Xid) EncodeText(ci *ConnInfo, w io.Writer) (bool, error) {
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return (pguint32)(src).EncodeText(ci, w)
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}
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func (src Xid) EncodeBinary(ci *ConnInfo, w io.Writer) (bool, error) {
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return (pguint32)(src).EncodeBinary(ci, w)
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}
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