Package org.h2.command

Class CommandList

java.lang.Object

org.h2.command.Command

org.h2.command.CommandList

All Implemented Interfaces:

AutoCloseable, CommandInterface

class CommandList
extends Command

Represents a list of SQL statements.

Field Summary

Fields

Modifier and Type	Field	Description
private CommandContainer	command
private final ArrayList<Prepared>	commands
private final ArrayList<Parameter>	parameters
private String	remaining
private Command	remainingCommand

Fields inherited from class org.h2.command.Command

session, startTimeNanos

Fields inherited from interface 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

Constructor Summary

Constructors

Constructor	Description
CommandList(SessionLocal session, String sql, CommandContainer command, ArrayList<Prepared> commands, ArrayList<Parameter> parameters, String remaining)

Method Summary

Modifier and Type	Method	Description
private void	executeRemaining()
int	getCommandType()	Get command type.
Set<DbObject>	getDependencies()
ArrayList<? extends ParameterInterface>	getParameters()	Get the list of parameters.
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.

Methods inherited from class org.h2.command.Command

cancel, canReuse, checkCanceled, close, executeQuery, executeUpdate, getMetaData, isCacheable, reuse, setCanReuse, setProgress, start, toString

Methods inherited from class java.lang.Object

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

Field Details

command

private CommandContainer command

commands

private final ArrayList<Prepared> commands

parameters

private final ArrayList<Parameter> parameters

remaining

private String remaining

remainingCommand

private Command remainingCommand

Constructor Details

CommandList

CommandList(SessionLocal session,
 String sql,
 CommandContainer command,
 ArrayList<Prepared> commands,
 ArrayList<Parameter> parameters,
 String remaining)

Method Details

getParameters

public ArrayList<? extends ParameterInterface> getParameters()

Description copied from class: Command

Get the list of parameters.

Specified by:

getParameters in interface CommandInterface

Specified by:

getParameters in class Command

Returns:

the list of parameters

executeRemaining

private void executeRemaining()

update

public ResultWithGeneratedKeys update(Object generatedKeysRequest)

Description copied from class: Command

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

Specified by:

update in class Command

Parameters:

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

Returns:

the update count and generated keys, if any

query

public ResultInterface query(long maxrows)

Description copied from class: Command

Execute a query statement, if this is possible.

Specified by:

query in class Command

Parameters:

maxrows - the maximum number of rows returned

Returns:

the local result set

stop

public void stop()

Description copied from interface: CommandInterface

Stop the command execution, release all locks and resources

Specified by:

stop in interface CommandInterface

Overrides:

stop in class Command

isQuery

public boolean isQuery()

Description copied from class: Command

Check if this command is a query.

Specified by:

isQuery in interface CommandInterface

Specified by:

isQuery in class Command

Returns:

true if it is

isTransactional

public boolean isTransactional()

Description copied from class: Command

Check if this command is transactional. If it is not, then it forces the current transaction to commit.

Specified by:

isTransactional in class Command

Returns:

true if it is

isReadOnly

public boolean isReadOnly()

Description copied from class: Command

Check if this command is read only.

Specified by:

isReadOnly in class Command

Returns:

true if it is

queryMeta

public ResultInterface queryMeta()

Description copied from class: Command

Get an empty result set containing the meta data.

Specified by:

queryMeta in class Command

Returns:

an empty result set

getCommandType

public int getCommandType()

Description copied from interface: CommandInterface

Get command type.

Returns:

one of the constants above

getDependencies

public Set<DbObject> getDependencies()

Specified by:

getDependencies in class Command

isCurrentCommandADefineCommand

protected boolean isCurrentCommandADefineCommand()

Description copied from class: Command

Is the command we just tried to execute a DefineCommand (i.e. DDL).

Specified by:

isCurrentCommandADefineCommand in class Command

Returns:

true if yes