111 lines
2.5 KiB
Go
111 lines
2.5 KiB
Go
package gorm
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import (
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"fmt"
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"reflect"
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"strings"
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"time"
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)
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type ql struct {
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commonDialect
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}
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func init() {
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RegisterDialect("ql", &ql{})
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RegisterDialect("ql-mem", &ql{})
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}
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func (ql) GetName() string {
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return "ql"
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}
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func (ql) Quote(key string) string {
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return fmt.Sprintf(`%s`, key)
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}
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func (ql) PrimaryKeys(keys []string) string {
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return ""
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}
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// Get Data Type for Sqlite Dialect
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func (ql) DataTypeOf(field *StructField) string {
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var dataValue, sqlType, _, additionalType = ParseFieldStructForDialect(field)
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if sqlType == "" {
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switch dataValue.Kind() {
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case reflect.Bool:
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sqlType = "bool"
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case reflect.Int:
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sqlType = "int"
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case reflect.Int8:
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sqlType = "int8"
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case reflect.Int16:
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sqlType = "int16"
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case reflect.Int32:
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sqlType = "int32"
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case reflect.Int64:
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sqlType = "int64"
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case reflect.Uint:
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sqlType = "uint"
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case reflect.Uint8:
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sqlType = "uint8"
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case reflect.Uint16:
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sqlType = "uint16"
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case reflect.Uint32:
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sqlType = "uint32"
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case reflect.Uint64:
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sqlType = "uint64"
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case reflect.Uintptr:
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sqlType = "uint"
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case reflect.Float32:
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sqlType = "float32"
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case reflect.Float64:
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sqlType = "float64"
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case reflect.String:
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sqlType = "string"
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case reflect.Struct:
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if _, ok := dataValue.Interface().(time.Time); ok {
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sqlType = "time"
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}
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default:
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if _, ok := dataValue.Interface().([]byte); ok {
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sqlType = "blob"
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}
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}
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}
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if sqlType == "" {
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panic(fmt.Sprintf("invalid sql type %s (%s) for ql", dataValue.Type().Name(), dataValue.Kind().String()))
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}
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if strings.TrimSpace(additionalType) == "" {
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return sqlType
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}
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return fmt.Sprintf("%v %v", sqlType, additionalType)
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}
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func (s ql) HasTable(tableName string) bool {
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var count int
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s.db.QueryRow("SELECT COUNT(*) FROM __Table WHERE Name = ?", tableName).Scan(&count)
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return count > 0
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}
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func (s ql) HasColumn(tableName string, columnName string) bool {
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var count int
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s.db.QueryRow("SELECT COUNT(*) FROM __Column WHERE TableName = ? AND Name = ?", tableName, columnName).Scan(&count)
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return count > 0
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}
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func (s ql) HasIndex(tableName string, indexName string) bool {
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var count int
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s.db.QueryRow("SELECT COUNT(*) FROM __Index WHERE TableName = ? AND Name = ?", tableName, indexName).Scan(&count)
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return count > 0
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}
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func (s ql) RemoveIndex(tableName string, indexName string) error {
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_, err := s.db.Exec(fmt.Sprintf("BEGIN TRANSACTION; DROP INDEX %v; COMMIT;", indexName))
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return err
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}
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