org.h2.command

类 CommandContainer

java.lang.Object

org.h2.command.Command

org.h2.command.CommandContainer

所有已实现的接口:

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_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_NOT_NULL, ALTER_TABLE_ALTER_COLUMN_NULL, ALTER_TABLE_ALTER_COLUMN_RENAME, ALTER_TABLE_ALTER_COLUMN_SELECTIVITY, 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_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_TABLE, DROP_TRIGGER, DROP_USER, DROP_VIEW, EXECUTE, EXPLAIN, GRANT, 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

方法概要

限定符和类型	方法和说明
int	getCommandType() Get command type.
ArrayList<? extends ParameterInterface>	getParameters() Get the list of parameters.
boolean	isCacheable()
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.
void	prepareJoinBatch() Prepare join batching.
ResultInterface	query(int maxrows) Execute a query statement, if this is possible.
ResultInterface	queryMeta() Get an empty result set containing the meta data.
int	update() 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, canReuse, checkCanceled, close, executeQuery, executeUpdate, getMetaData, reuse, toString

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

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

prepareJoinBatch

public void prepareJoinBatch()

从类复制的说明: Command

Prepare join batching.

指定者:

prepareJoinBatch 在类中 Command

update

public int update()

从类复制的说明: Command

Execute an updating statement (for example insert, delete, or update), if this is possible.

覆盖:

update 在类中 Command

返回:

the update count

query

public ResultInterface query(int maxrows)

从类复制的说明: Command

Execute a query statement, if this is possible.

覆盖:

query 在类中 Command

参数:

maxrows - the maximum number of rows returned

返回:

the local result set

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