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1f3e484ca1
To aid in composability, these methods no longer write their own length. This is especially useful for text formatted arrays and may be useful for future database/sql compatibility. It also makes the code a little simpler as the types no longer have to compute their own size. Along with this, these methods cannot encode NULL. They now return a boolean if they are NULL. This also benefits text array encoding as numeric arrays require NULL to be exactly `NULL` while string arrays require NULL to be `"NULL"`.
48 lines
1.3 KiB
Go
48 lines
1.3 KiB
Go
package pgtype
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import (
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"io"
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)
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// CID is PostgreSQL's Command Identifier type.
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//
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// When one does
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//
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// select cmin, cmax, * from some_table;
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//
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// it is the data type of the cmin and cmax 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/c.h as CommandId
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// in the PostgreSQL sources.
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type CID pguint32
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// ConvertFrom converts from src to dst. Note that as CID is not a general
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// number type ConvertFrom does not do automatic type conversion as other number
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// types do.
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func (dst *CID) ConvertFrom(src interface{}) error {
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return (*pguint32)(dst).ConvertFrom(src)
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}
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// AssignTo assigns from src to dst. Note that as CID 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 *CID) AssignTo(dst interface{}) error {
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return (*pguint32)(src).AssignTo(dst)
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}
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func (dst *CID) DecodeText(src []byte) error {
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return (*pguint32)(dst).DecodeText(src)
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}
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func (dst *CID) DecodeBinary(src []byte) error {
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return (*pguint32)(dst).DecodeBinary(src)
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}
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func (src CID) EncodeText(w io.Writer) (bool, error) {
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return (pguint32)(src).EncodeText(w)
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}
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func (src CID) EncodeBinary(w io.Writer) (bool, error) {
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return (pguint32)(src).EncodeBinary(w)
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}
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