package bolt import "errors" // These errors can be returned when opening or calling methods on a DB.var (	// ErrDatabaseNotOpen is returned when a DB instance is accessed before it	// is opened or after it is closed.	ErrDatabaseNotOpen = errors.New("database not open") 	// ErrDatabaseOpen is returned when opening a database that is	// already open.	ErrDatabaseOpen = errors.New("database already open") 	// ErrInvalid is returned when both meta pages on a database are invalid.	// This typically occurs when a file is not a bolt database.	ErrInvalid = errors.New("invalid database") 	// ErrVersionMismatch is returned when the data file was created with a	// different version of Bolt.	ErrVersionMismatch = errors.New("version mismatch") 	// ErrChecksum is returned when either meta page checksum does not match.	ErrChecksum = errors.New("checksum error") 	// ErrTimeout is returned when a database cannot obtain an exclusive lock	// on the data file after the timeout passed to Open().	ErrTimeout = errors.New("timeout")) // These errors can occur when beginning or committing a Tx.var (	// ErrTxNotWritable is returned when performing a write operation on a	// read-only transaction.	ErrTxNotWritable = errors.New("tx not writable") 	// ErrTxClosed is returned when committing or rolling back a transaction	// that has already been committed or rolled back.	ErrTxClosed = errors.New("tx closed") 	// ErrDatabaseReadOnly is returned when a mutating transaction is started on a	// read-only database.	ErrDatabaseReadOnly = errors.New("database is in read-only mode")) // These errors can occur when putting or deleting a value or a bucket.var (	// ErrBucketNotFound is returned when trying to access a bucket that has	// not been created yet.	ErrBucketNotFound = errors.New("bucket not found") 	// ErrBucketExists is returned when creating a bucket that already exists.	ErrBucketExists = errors.New("bucket already exists") 	// ErrBucketNameRequired is returned when creating a bucket with a blank name.	ErrBucketNameRequired = errors.New("bucket name required") 	// ErrKeyRequired is returned when inserting a zero-length key.	ErrKeyRequired = errors.New("key required") 	// ErrKeyTooLarge is returned when inserting a key that is larger than MaxKeySize.	ErrKeyTooLarge = errors.New("key too large") 	// ErrValueTooLarge is returned when inserting a value that is larger than MaxValueSize.	ErrValueTooLarge = errors.New("value too large") 	// ErrIncompatibleValue is returned when trying create or delete a bucket	// on an existing non-bucket key or when trying to create or delete a	// non-bucket key on an existing bucket key.	ErrIncompatibleValue = errors.New("incompatible value"))