77 lines
1.6 KiB
Go
77 lines
1.6 KiB
Go
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package memdb
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import "fmt"
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// DBSchema contains the full database schema used for MemDB
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type DBSchema struct {
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Tables map[string]*TableSchema
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}
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// Validate is used to validate the database schema
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func (s *DBSchema) Validate() error {
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if s == nil {
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return fmt.Errorf("missing schema")
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}
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if len(s.Tables) == 0 {
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return fmt.Errorf("no tables defined")
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}
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for name, table := range s.Tables {
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if name != table.Name {
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return fmt.Errorf("table name mis-match for '%s'", name)
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}
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if err := table.Validate(); err != nil {
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return err
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}
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}
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return nil
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}
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// TableSchema contains the schema for a single table
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type TableSchema struct {
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Name string
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Indexes map[string]*IndexSchema
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}
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// Validate is used to validate the table schema
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func (s *TableSchema) Validate() error {
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if s.Name == "" {
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return fmt.Errorf("missing table name")
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}
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if len(s.Indexes) == 0 {
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return fmt.Errorf("missing table schemas for '%s'", s.Name)
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}
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if _, ok := s.Indexes["id"]; !ok {
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return fmt.Errorf("must have id index")
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}
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if !s.Indexes["id"].Unique {
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return fmt.Errorf("id index must be unique")
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}
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for name, index := range s.Indexes {
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if name != index.Name {
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return fmt.Errorf("index name mis-match for '%s'", name)
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}
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if err := index.Validate(); err != nil {
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return err
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}
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}
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return nil
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}
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// IndexSchema contains the schema for an index
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type IndexSchema struct {
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Name string
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AllowMissing bool
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Unique bool
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Indexer Indexer
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}
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func (s *IndexSchema) Validate() error {
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if s.Name == "" {
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return fmt.Errorf("missing index name")
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}
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if s.Indexer == nil {
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return fmt.Errorf("missing index function for '%s'", s.Name)
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}
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return nil
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}
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