100 lines
1.9 KiB
Go
100 lines
1.9 KiB
Go
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package schema
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import (
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"database/sql"
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"reflect"
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"sync"
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"github.com/uptrace/bun/dialect"
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"github.com/uptrace/bun/dialect/feature"
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)
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type Dialect interface {
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Init(db *sql.DB)
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Name() dialect.Name
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Features() feature.Feature
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Tables() *Tables
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OnTable(table *Table)
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IdentQuote() byte
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Append(fmter Formatter, b []byte, v interface{}) []byte
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Appender(typ reflect.Type) AppenderFunc
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FieldAppender(field *Field) AppenderFunc
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Scanner(typ reflect.Type) ScannerFunc
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}
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//------------------------------------------------------------------------------
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type nopDialect struct {
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tables *Tables
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features feature.Feature
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appenderMap sync.Map
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scannerMap sync.Map
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}
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func newNopDialect() *nopDialect {
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d := new(nopDialect)
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d.tables = NewTables(d)
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d.features = feature.Returning
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return d
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}
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func (d *nopDialect) Init(*sql.DB) {}
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func (d *nopDialect) Name() dialect.Name {
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return dialect.Invalid
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}
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func (d *nopDialect) Features() feature.Feature {
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return d.features
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}
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func (d *nopDialect) Tables() *Tables {
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return d.tables
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}
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func (d *nopDialect) OnField(field *Field) {}
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func (d *nopDialect) OnTable(table *Table) {}
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func (d *nopDialect) IdentQuote() byte {
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return '"'
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}
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func (d *nopDialect) Append(fmter Formatter, b []byte, v interface{}) []byte {
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return Append(fmter, b, v, nil)
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}
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func (d *nopDialect) Appender(typ reflect.Type) AppenderFunc {
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if v, ok := d.appenderMap.Load(typ); ok {
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return v.(AppenderFunc)
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}
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fn := Appender(typ, nil)
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if v, ok := d.appenderMap.LoadOrStore(typ, fn); ok {
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return v.(AppenderFunc)
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}
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return fn
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}
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func (d *nopDialect) FieldAppender(field *Field) AppenderFunc {
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return FieldAppender(d, field)
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}
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func (d *nopDialect) Scanner(typ reflect.Type) ScannerFunc {
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if v, ok := d.scannerMap.Load(typ); ok {
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return v.(ScannerFunc)
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}
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fn := Scanner(typ)
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if v, ok := d.scannerMap.LoadOrStore(typ, fn); ok {
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return v.(ScannerFunc)
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}
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return fn
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}
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