CommandContainer (H2 Database Engine 2.0.0 API)

java.lang.Object
- org.h2.command.Command
- - org.h2.command.CommandContainer

所有已实现的接口:

AutoCloseable, CommandInterface
```
public class CommandContainer
extends Command
```
Represents a single SQL statements. It wraps a prepared statement.

字段概要
- 从类继承的字段 org.h2.command.Command
  session, startTimeNanos
- 从接口继承的字段 org.h2.command.CommandInterface
  ALTER_DOMAIN_ADD_CONSTRAINT, ALTER_DOMAIN_DEFAULT, ALTER_DOMAIN_DROP_CONSTRAINT, ALTER_DOMAIN_ON_UPDATE, ALTER_DOMAIN_RENAME, ALTER_DOMAIN_RENAME_CONSTRAINT, ALTER_INDEX_RENAME, ALTER_SCHEMA_RENAME, ALTER_SEQUENCE, ALTER_TABLE_ADD_COLUMN, ALTER_TABLE_ADD_CONSTRAINT_CHECK, ALTER_TABLE_ADD_CONSTRAINT_PRIMARY_KEY, ALTER_TABLE_ADD_CONSTRAINT_REFERENTIAL, ALTER_TABLE_ADD_CONSTRAINT_UNIQUE, ALTER_TABLE_ALTER_COLUMN_CHANGE_TYPE, ALTER_TABLE_ALTER_COLUMN_DEFAULT, ALTER_TABLE_ALTER_COLUMN_DEFAULT_ON_NULL, ALTER_TABLE_ALTER_COLUMN_DROP_EXPRESSION, ALTER_TABLE_ALTER_COLUMN_DROP_IDENTITY, ALTER_TABLE_ALTER_COLUMN_DROP_NOT_NULL, ALTER_TABLE_ALTER_COLUMN_NOT_NULL, ALTER_TABLE_ALTER_COLUMN_ON_UPDATE, ALTER_TABLE_ALTER_COLUMN_RENAME, ALTER_TABLE_ALTER_COLUMN_SELECTIVITY, ALTER_TABLE_ALTER_COLUMN_VISIBILITY, ALTER_TABLE_DROP_COLUMN, ALTER_TABLE_DROP_CONSTRAINT, ALTER_TABLE_RENAME, ALTER_TABLE_RENAME_CONSTRAINT, ALTER_TABLE_SET_REFERENTIAL_INTEGRITY, ALTER_USER_ADMIN, ALTER_USER_RENAME, ALTER_USER_SET_PASSWORD, ALTER_VIEW, ANALYZE, BACKUP, BEGIN, CALL, CHECKPOINT, CHECKPOINT_SYNC, COMMENT, COMMIT, COMMIT_TRANSACTION, CREATE_AGGREGATE, CREATE_ALIAS, CREATE_CONSTANT, CREATE_DOMAIN, CREATE_INDEX, CREATE_LINKED_TABLE, CREATE_ROLE, CREATE_SCHEMA, CREATE_SEQUENCE, CREATE_SYNONYM, CREATE_TABLE, CREATE_TRIGGER, CREATE_USER, CREATE_VIEW, DEALLOCATE, DELETE, DROP_AGGREGATE, DROP_ALIAS, DROP_ALL_OBJECTS, DROP_CONSTANT, DROP_DOMAIN, DROP_INDEX, DROP_ROLE, DROP_SCHEMA, DROP_SEQUENCE, DROP_SYNONYM, DROP_TABLE, DROP_TRIGGER, DROP_USER, DROP_VIEW, EXECUTE, EXECUTE_IMMEDIATELY, EXPLAIN, EXPLAIN_ANALYZE, GRANT, HELP, INSERT, MERGE, NO_OPERATION, PREPARE, PREPARE_COMMIT, REPLACE, REVOKE, ROLLBACK, ROLLBACK_TO_SAVEPOINT, ROLLBACK_TRANSACTION, RUNSCRIPT, SAVEPOINT, SCRIPT, SELECT, SET, SET_AUTOCOMMIT_FALSE, SET_AUTOCOMMIT_TRUE, SHUTDOWN, SHUTDOWN_COMPACT, SHUTDOWN_DEFRAG, SHUTDOWN_IMMEDIATELY, TRUNCATE_TABLE, UNKNOWN, UPDATE

构造器概要

构造器
构造器和说明

CommandContainer(SessionLocal session, String sql, Prepared prepared)

构造器
构造器和说明
`CommandContainer(SessionLocal session, String sql, Prepared prepared)`

方法概要

所有方法实例方法具体方法
限定符和类型	方法和说明
`boolean`	`canReuse()` Whether the command is already closed (in which case it can be re-used).
`int`	`getCommandType()` Get command type.
`Set<DbObject>`	`getDependencies()`
`ArrayList<? extends ParameterInterface>`	`getParameters()` Get the list of parameters.
`boolean`	`isCacheable()`
`protected boolean`	`isCurrentCommandADefineCommand()` Is the command we just tried to execute a DefineCommand (i.e.
`boolean`	`isQuery()` Check if this command is a query.
`boolean`	`isReadOnly()` Check if this command is read only.
`boolean`	`isTransactional()` Check if this command is transactional.
`ResultInterface`	`query(long maxrows)` Execute a query statement, if this is possible.
`ResultInterface`	`queryMeta()` Get an empty result set containing the meta data.
`void`	`stop()` Stop the command execution, release all locks and resources
`ResultWithGeneratedKeys`	`update(Object generatedKeysRequest)` Execute an updating statement (for example insert, delete, or update), if this is possible.

从类继承的方法 org.h2.command.Command
cancel, checkCanceled, close, executeQuery, executeUpdate, getMetaData, reuse, setCanReuse, toString

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- 构造器详细资料
  - CommandContainer
```
public CommandContainer(SessionLocal session,
                        String sql,
                        Prepared prepared)
```
- 方法详细资料
  - getParameters
```
public ArrayList<? extends ParameterInterface> getParameters()
```
    从类复制的说明: Command
    
    Get the list of parameters.
    
    指定者:
    
    getParameters 在接口中 CommandInterface
    
    指定者:
    
    getParameters 在类中 Command
    
    返回:
    
    the list of parameters
  - isTransactional
```
public boolean isTransactional()
```
    从类复制的说明: Command
    
    Check if this command is transactional. If it is not, then it forces the current transaction to commit.
    
    指定者:
    
    isTransactional 在类中 Command
    
    返回:
    
    true if it is
  - isQuery
```
public boolean isQuery()
```
    从类复制的说明: Command
    
    Check if this command is a query.
    
    指定者:
    
    isQuery 在接口中 CommandInterface
    
    指定者:
    
    isQuery 在类中 Command
    
    返回:
    
    true if it is
  - update
```
public ResultWithGeneratedKeys update(Object generatedKeysRequest)
```
    从类复制的说明: Command
    
    Execute an updating statement (for example insert, delete, or update), if this is possible.
    
    指定者:
    
    update 在类中 Command
    
    参数:
    
    generatedKeysRequest - false if generated keys are not needed, true if generated keys should be configured automatically, int[] to specify column indices to return generated keys from, or String[] to specify column names to return generated keys from
    
    返回:
    
    the update count and generated keys, if any
  - query
```
public ResultInterface query(long maxrows)
```
    从类复制的说明: Command
    
    Execute a query statement, if this is possible.
    
    指定者:
    
    query 在类中 Command
    
    参数:
    
    maxrows - the maximum number of rows returned
    
    返回:
    
    the local result set
  - stop
```
public void stop()
```
    从接口复制的说明: CommandInterface
    
    Stop the command execution, release all locks and resources
    
    指定者:
    
    stop 在接口中 CommandInterface
    
    覆盖:
    
    stop 在类中 Command
  - canReuse
```
public boolean canReuse()
```
    从类复制的说明: Command
    
    Whether the command is already closed (in which case it can be re-used).
    
    覆盖:
    
    canReuse 在类中 Command
    
    返回:
    
    true if it can be re-used
  - isReadOnly
```
public boolean isReadOnly()
```
    从类复制的说明: Command
    
    Check if this command is read only.
    
    指定者:
    
    isReadOnly 在类中 Command
    
    返回:
    
    true if it is
  - queryMeta
```
public ResultInterface queryMeta()
```
    从类复制的说明: Command
    
    Get an empty result set containing the meta data.
    
    指定者:
    
    queryMeta 在类中 Command
    
    返回:
    
    an empty result set
  - isCacheable
```
public boolean isCacheable()
```
    覆盖:
    
    isCacheable 在类中 Command
  - getCommandType
```
public int getCommandType()
```
    从接口复制的说明: CommandInterface
    
    Get command type.
    
    返回:
    
    one of the constants above
  - getDependencies
```
public Set<DbObject> getDependencies()
```
    指定者:
    
    getDependencies 在类中 Command
  - isCurrentCommandADefineCommand
```
protected boolean isCurrentCommandADefineCommand()
```
    从类复制的说明: Command
    
    Is the command we just tried to execute a DefineCommand (i.e. DDL).
    
    指定者:
    
    isCurrentCommandADefineCommand 在类中 Command
    
    返回:
    
    true if yes

类 CommandContainer

字段概要

从类继承的字段 org.h2.command.Command

从接口继承的字段 org.h2.command.CommandInterface

构造器概要

方法概要

从类继承的方法 org.h2.command.Command

从类继承的方法 java.lang.Object

构造器详细资料

CommandContainer

方法详细资料

getParameters

isTransactional

isQuery

update

query

stop

canReuse

isReadOnly

queryMeta

isCacheable

getCommandType

getDependencies

isCurrentCommandADefineCommand