类常量
在Database 类中定义了以下常数值：
类定义
public class Database implements java.io.Closeable
{
...
/* 影响数据库压缩的设置 */
public static final int Compression_ObjHead = 0x01;
public static final int Compression_ObjNode = 0x02;
public static final int Compression_BlobHead = 0x40;
public static final int Compression_BlobTail = 0x80;
public static final int Compression_FixedrecSet = 0x1000;
public static final int Compression_All = Compression_ObjHead |
Compression_ObjNode | Compression_FixedrecSet |
Compression_BlobHead | Compression_BlobTail;
/* 影响eXtremeDB数据库的设置 */
/**
* 在崩溃后自动清理磁盘数据库。（删除所有工作副本。）
*（仅在使用 MVCC 事务管理器时适用。）
*/
public static final int DB_MODE_MVCC_AUTO_REPAIR = 0x01;
/**
* 在将对象插入磁盘索引之前，先按键对其进行排序。
*/
public static final int DB_MODE_SMART_INDEX_INSERT = 0x2;
/**
* 打开现有的 NVRAM 数据库。默认情况下，如果要打开的数据库已存在，则会报告 INSTANCE_DUPLICATE 错误。使用此标志，数据库已注册则不会被视为错误。
*/
public static final int DB_OPEN_EXISTING = 0x04;
/**
* 计算磁盘数据库页面的循环冗余校验（CRC）值
*/
public static final int DB_USE_CRC_CHECK = 0x08;
/**
* 将类标记为瞬态（不在磁盘数据库中保存）
*/
public static final int DB_TRANSIENT = 0x10;
/**
* 按需初始化内存页
*/
public static final int DB_LAZY_MEM_INITIALIZATION = 0x20;
/**
* 在将更改刷新到磁盘之前释放 MURSIW 写锁
*/
public static final int DB_MURSIW_DISK_COMMIT_OPTIMIZATION = 0x40;
/**
* 一次性将所有未固定且已修改的页面写入磁盘（而不是在页面从缓存中移除时逐个写入）
*/
public static final int DB_BULK_WRITE_MODIFIED_PAGES = 0x80;
/**
* 仅对事务体的首字节和尾字节计算循环冗余校验（CRC）
*/
public static final int MCO_DB_BTREE_HOLD_LOCKS = 0x0100;
public static final int DB_INDEX_PRELOAD = 0x0200;
public static final int DB_DISABLE_NESTED_TRANSACTIONS = 0x0400;
public static final int DB_DISABLE_IMPLICIT_ROLLBACK = 0x0800;
public static final int DB_INMEMORY_PROTECTION = 0x1000;
public static final int DB_INCLUSIVE_BTREE = 0x2000;
public static final int DB_INMEMORY_COMPRESSION = 0x4000;
public static final int DB_SEPARATE_BITMAP = 0x8000;
public static final int DB_DISABLE_BTREE_REBALANCE_ON_DELETE = 0x10000;
public static final int DB_AUTO_ROLLBACK_FIRST_PHASE = 0x20000;
public static final int DB_MVCC_COMPATIBILITY_MODE = 0x40000;
public static final int DB_DISABLE_PAGE_POOL_RESERVE = 0x80000;
public static final int DB_REDO_LOG_OPTIMIZATION = 0x100000;
public static final int DB_DISABLE_HOT_UPDATES = 0x200000;
public static final int DB_SQL_AUTOCHECKPOINT = 0x400000;
public static final int DB_MODE_READ_ONLY = 0x800000;
public static final int DB_USE_AIO = 0x1000000;
public static final int DB_INCREMENTAL_BACKUP = 0x2000000;
/**
* 多字节字符串编码。（这可用于 Parameters.stringEncoding 和 Encoding 注解中。）
*/
public static final String MULTIBYTE_ENCODING = "UTF-8";
/**
* 宽字符字符串编码。（这可用于 Parameters.stringEncoding 和 Encoding 注解中。）
*/
public static final String WIDE_CHARACTER_ENCODING = "UTF-16";
/* 影响 SmartEDB 运行时的设置 */
public static final int RT_OPTION_EXTHEAPS = 0;
public static final int RT_WINDOWS_SHM_OPT = 1;
public static final int RT_OPTION_MARK_LAST_OBJ = 2;
public static final int RT_OPTION_UNIX_SHM_MASK = 3;
public static final int RT_POSIX_SHM_OPT = 4;
public static final int RT_CRC_ALGORITHM = 5;
public static final int RT_MAX_PATRICIA_DEPTH = 6;
public static final int RT_MAX_DYNAMIC_PIPES = 7;
public static final int RT_OPTION_CLASS_LOAD_MERGE = 8;
public static final int RT_OPTION_DATETIME_PRECISION = 9;
/* 影响 SmartEDB 集群运行时的设置 */
public static final int SOCK_INET_DOMAIN = 0;
public static final int SOCK_LOCAL_DOMAIN = 1;
public static final int SOCK_SDP_DOMAIN = 2;
public static final int CLUSTER_MPI_BUSYWAIT = 0x1;
public static final int CLUSTER_MPI_SERIALIZED_SEND = 0x2;
public static final int CLUSTER_MODE_DEBUG_OUTPUT = 0x1;
public static final int CLUSTER_MODE_EARLY_DATA_SEND = 0x2;
public static final int CLUSTER_MODE_BINARY_EVOLUTION = 0x4;
/* 影响增量备份的设置 */
public static final int BACKUP_FLAG_COMPRESSED = 1;
public static final int BACKUP_FLAG_ENCRYPTED = 2;
/* 影响安全套接字通信的设置 */
public static final int VERIFY_NONE = 0x0;
public static final int VERIFY_PEER = 0x01;
public static final int VERIFY_FAIL_IF_NO_PEER_CERT = 0x02;
public static final int VERIFY_CLIENT_ONCE = 0x04;
/* 启用 SmartEDB 运行时功能的设置 */
public static final int MCO_CFG_DEBUG_LIBRARY = 1;
public static final int MCO_CFG_MVCC_TRANSACTION_MANAGER = 2;
public static final int MCO_CFG_SHARED_MEMORY = 4;
public static final int MCO_CFG_DISK_SUPPORT = 8;
public static final int MCO_CFG_HA_SUPPORT = 16;
public static final int MCO_CFG_CLUSTER_SUPPORT = 32;
public static final int MCO_CFG_MPI_CLUSTER_SUPPORT = 64;
public static final int MCO_CFG_TL_SUPPORT = 128;
public static final int MCO_CFG_SQL_SUPPORT = 256;
public static final int MCO_CFG_SEQUENCE_SUPPORT = 512;
public static final int MCO_CFG_LOAD_ASSEMBLY = 1024;
public static final int MCO_CFG_USE_POSIX_LIBRARIES = 2048;
public static final int MCO_CFG_DISK_COMPRESSION = 4096;
/* 用于指定eXtremeDB字段类型的常量 */
final static int MCO_DB_FT_NONE = 0;
final static int MCO_DB_FT_UINT1 = 1;
final static int MCO_DB_FT_UINT2 = 2;
final static int MCO_DB_FT_UINT4 = 3;
final static int MCO_DB_FT_INT1 = 4;
final static int MCO_DB_FT_INT2 = 5;
final static int MCO_DB_FT_INT4 = 6;
final static int MCO_DB_FT_CHARS = 7;
final static int MCO_DB_FT_STRING = 8;
final static int MCO_DB_FT_REF = 9;
final static int MCO_DB_FT_FLOAT = 10;
final static int MCO_DB_FT_DOUBLE = 11;
final static int MCO_DB_FT_UINT8 = 12;
final static int MCO_DB_FT_INT8 = 13;
final static int MCO_DB_FT_AUTOID = 14 /* 8 byte = */;
final static int MCO_DB_FT_OBJVERS = 15 /* 2 byte = */;
final static int MCO_DB_FT_DATE = 16 ;
final static int MCO_DB_FT_TIME = 17 ;
final static int MCO_DB_FT_AUTOOID = 18 ;
final static int MCO_DB_FT_UNICODE_CHARS = 19;
final static int MCO_DB_FT_UNICODE_STRING = 20;
final static int MCO_DB_FT_WIDE_CHARS = 21;
final static int MCO_DB_FT_WCHAR_STRING = 22;
final static int MCO_DB_FT_BOOL = 23;
final static int MCO_DB_FT_DATETIME = 24;
final static int MCO_DB_FT_SEQUENCE_UINT1 = 30;
final static int MCO_DB_FT_SEQUENCE_UINT2 = 31;
final static int MCO_DB_FT_SEQUENCE_UINT4 = 32;
final static int MCO_DB_FT_SEQUENCE_UINT8 = 33;
final static int MCO_DB_FT_SEQUENCE_INT1 = 34;
final static int MCO_DB_FT_SEQUENCE_INT2 = 35;
final static int MCO_DB_FT_SEQUENCE_INT4 = 36;
final static int MCO_DB_FT_SEQUENCE_INT8 = 37;
final static int MCO_DB_FT_SEQUENCE_FLOAT = 38;
final static int MCO_DB_FT_SEQUENCE_DOUBLE = 39;
final static int MCO_DB_FT_SEQUENCE_CHAR = 40;
final static int MCO_DB_FT_SEQUENCE_DATETIME = 41;
final static int MCO_DB_FT_STRUCT = 50;
final static int MCO_DB_FT_BLOB = 51;
final static int MCO_DICT_FLDF_VECTOR = 0x01;
final static int MCO_DICT_FLDF_ARRAY = 0x02;
final static int MCO_DICT_FLDF_OPTIONAL = 0x04;
final static int MCO_DICT_FLDF_INDEXED = 0x08;
final static int MCO_DICT_FLDF_HIDDEN = 0x10;
final static int MCO_DICT_FLDF_NULLABLE = 0x20;
final static int MCO_DICT_FLDF_NULL_INDICATOR = 0x40;
final static int MCO_DICT_FLDF_NUMERIC = 0x80;
final static int MCO_DB_TYPINFO_HAS_LIST = 0x0001;
final static int MCO_DB_TYPINFO_HAS_OID = 0x0002;
final static int MCO_DB_TYPINFO_HAS_BLOBS = 0x0004;
final static int MCO_DB_TYPINFO_COMPACT = 0x0008;
final static int MCO_DB_TYPINFO_FIXEDREC = 0x0010;
final static int MCO_DB_TYPINFO_PERSISTENT = 0x0020;
final static int MCO_DB_TYPINFO_HAS_AUTOID = 0x0040;
final static int MCO_DB_TYPINFO_HAS_HISTORY = 0x0080;
final static int MCO_DB_TYPINFO_HAS_EVENTS = 0x0100;
final static int MCO_DB_TYPINFO_HAS_SEQUENCES = 0x0200;
final static int MCO_DB_TYPINFO_LOCAL = 0x0400;
final static int MCO_DB_TYPINFO_DISTRIBUTED = 0x0800;
final static int MCO_DB_TYPINFO_HIDDEN = 0x1000;
final static int MCO_DB_TYPINFO_NONATOMIC = 0x2000;
final static int MCO_DB_INDF_UNIQUE = 0x0004;
final static int MCO_DB_INDF_VSTRUCT_BASED = 0x0008;
final static int MCO_DB_INDF_VTYPE_BASED = 0x0010;
final static int MCO_DB_INDF_V_BASED = (MCO_DB_INDF_VSTRUCT_BASED | MCO_DB_INDF_VTYPE_BASED);
final static int MCO_DB_INDF_PERSISTENT = 0x0020;
final static int MCO_DB_INDF_VOLUNTARY = 0x0040;
final static int MCO_DB_INDF_ASTRUCT_BASED = 0x0080;
final static int MCO_DB_INDF_ATYPE_BASED = 0x0100;
final static int MCO_DB_INDF_VOLUNTARY_SAVED = 0x0200;
final static int MCO_DB_INDF_T_LIST = 0x0400;
final static int MCO_DB_INDF_T_REGULAR = 0x0800;
final static int MCO_DB_INDF_T_AUTOID = 0x1000;
final static int MCO_DB_INDF_T_HISTORY = 0x2000;
final static int MCO_DB_INDF_NULLABLE = 0x10000;
final static int MCO_DB_INDF_THICK = 0x20000;
final static int MCO_DB_INDF_COMPACT = 0x40000;
final static int MCO_DB_INDF_POINT = 0x80000;
final static int MCO_DB_INDF_TRIGRAM = 0x100000;
final static int scalarSeqElemSize[] = {1,2,4,8,1,2,4,8,4,8,0,8};
...
}