tx3 := DB.Session(&gorm.Session{PrepareStmt: true})
		if err := tx3.Transaction(func(tx4 *gorm.DB) error {
			// nested transaction
			return tx4.Transaction(func(tx5 *gorm.DB) error {
				return tx5.First(&User{}, "name = ?", "transaction-2").Error
			})
		}); err != nil {
			t.Fatalf("prepare statement and nested transcation coexist" + err.Error())
		}
	})
}

func TestCancelTransaction(t *testing.T) {
	ctx := context.Background()

	defer conn.Close()
	tx.Statement.ConnPool = conn
	return fc(tx)
}

// Transaction start a transaction as a block, return error will rollback, otherwise to commit. Transaction executes an
// arbitrary number of commands in fc within a transaction. On success the changes are committed; if an error occurs
// they are rolled back.
func (db *DB) Transaction(fc func(tx *DB) error, opts ...*sql.TxOptions) (err error) {
	panicked := true

	// DisableForeignKeyConstraintWhenMigrating
	DisableForeignKeyConstraintWhenMigrating bool
	// IgnoreRelationshipsWhenMigrating
	IgnoreRelationshipsWhenMigrating bool
	// DisableNestedTransaction disable nested transaction
	DisableNestedTransaction bool
	// AllowGlobalUpdate allow global update
	AllowGlobalUpdate bool
	// QueryFields executes the SQL query with all fields of the table
	QueryFields bool

	}

	return evalDisks(disks, errs), err
}

// PutObjectPart - reads incoming stream and internally erasure codes
// them. This call is similar to single put operation but it is part
// of the multipart transaction.
//
// Implements S3 compatible Upload Part API.
func (er erasureObjects) PutObjectPart(ctx context.Context, bucket, object, uploadID string, partID int, r *PutObjReader, opts ObjectOptions) (pi PartInfo, err error) {

     */
    int getMaximumBufferSize ();


    /**
     * 
     * Property <tt>jcifs.smb.client.transaction_buf_size</tt> (int, default 65535)
     * 
     * @return maximum data size for SMB transactions
     */
    int getTransactionBufferSize ();


    /**
     * 
     * Property <tt>jcifs.smb.maxBuffers</tt> (int, default 16)
     * 

            case ServerMessageBlock.SMB_COM_CLOSE:
            case ServerMessageBlock.SMB_COM_TREE_DISCONNECT:
                break;
            case ServerMessageBlock.SMB_COM_TRANSACTION:
            case ServerMessageBlock.SMB_COM_TRANSACTION2:
                switch ( ( (SmbComTransaction) request ).getSubCommand() & 0xFF ) {
                case SmbComTransaction.NET_SHARE_ENUM:
                case SmbComTransaction.NET_SERVER_ENUM2:

			<version>${jstl.version}</version>
			<!-- contains taglibs.standard -->
			<!-- <scope>provided</scope> -->
		</dependency>
		<dependency>
			<groupId>javax.transaction</groupId>
			<artifactId>javax.transaction-api</artifactId>
			<version>${javax.transaction.api.version}</version>
		</dependency>
		<dependency>
			<groupId>org.glassfish.jersey.core</groupId>
			<artifactId>jersey-common</artifactId>

For example, if some code at some point in the middle, in another dependency or in a *path operation*, made a database transaction "rollback" or create any other error, you will receive the exception in your dependency.

So, you can look for that specific exception inside the dependency with `except SomeException`.

func mustGetUUIDBytes() []byte {
	u, err := uuid.NewRandom()
	if err != nil {
		logger.CriticalIf(GlobalContext, err)
	}
	return u[:]
}

// Create an s3 compatible MD5sum for complete multipart transaction.
func getCompleteMultipartMD5(parts []CompletePart) string {
	var finalMD5Bytes []byte
	for _, part := range parts {
		md5Bytes, err := hex.DecodeString(canonicalizeETag(part.ETag))
		if err != nil {

	DB.Migrator().DropTable(&Token{}, &TokenOwner{})
	DB.AutoMigrate(&Token{}, &TokenOwner{})

	saveTokenOwner := func(owner *TokenOwner) (*TokenOwner, error) {
		var newOwner TokenOwner
		if err := DB.Transaction(func(tx *gorm.DB) error {
			if err := tx.Session(&gorm.Session{FullSaveAssociations: true}).Save(owner).Error; err != nil {
				return err
			}