84 lines
1.6 KiB
Go
84 lines
1.6 KiB
Go
package sqlitedialect
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import (
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"database/sql"
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"encoding/hex"
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"github.com/uptrace/bun/dialect"
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"github.com/uptrace/bun/dialect/feature"
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"github.com/uptrace/bun/dialect/sqltype"
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"github.com/uptrace/bun/schema"
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)
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type Dialect struct {
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schema.BaseDialect
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tables *schema.Tables
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features feature.Feature
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}
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func New() *Dialect {
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d := new(Dialect)
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d.tables = schema.NewTables(d)
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d.features = feature.CTE |
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feature.Returning |
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feature.InsertTableAlias |
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feature.DeleteTableAlias
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return d
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}
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func (d *Dialect) Init(*sql.DB) {}
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func (d *Dialect) Name() dialect.Name {
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return dialect.SQLite
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}
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func (d *Dialect) Features() feature.Feature {
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return d.features
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}
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func (d *Dialect) Tables() *schema.Tables {
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return d.tables
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}
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func (d *Dialect) OnTable(table *schema.Table) {
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for _, field := range table.FieldMap {
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d.onField(field)
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}
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}
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func (d *Dialect) onField(field *schema.Field) {
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field.DiscoveredSQLType = fieldSQLType(field)
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}
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func (d *Dialect) IdentQuote() byte {
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return '"'
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}
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func (d *Dialect) AppendBytes(b []byte, bs []byte) []byte {
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if bs == nil {
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return dialect.AppendNull(b)
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}
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b = append(b, `X'`...)
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s := len(b)
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b = append(b, make([]byte, hex.EncodedLen(len(bs)))...)
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hex.Encode(b[s:], bs)
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b = append(b, '\'')
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return b
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}
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func fieldSQLType(field *schema.Field) string {
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switch field.DiscoveredSQLType {
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case sqltype.SmallInt, sqltype.BigInt:
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// INTEGER PRIMARY KEY is an alias for the ROWID.
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// It is safe to convert all ints to INTEGER, because SQLite types don't have size.
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return sqltype.Integer
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default:
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return field.DiscoveredSQLType
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}
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}
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