org.h2.command
Class CommandContainer

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

All Implemented Interfaces:

CommandInterface

public class CommandContainer
extends Command

Represents a single SQL statements. It wraps a prepared statement.

Field Summary

Fields inherited from class org.h2.command.Command

session, startTime, trace

Method Summary

ObjectArray<? extends ParameterInterface>	getParameters() Get the list of parameters.
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.
LocalResult	query(int maxrows) Execute a query statement, if this is possible.
LocalResult	queryMeta() Get an empty result set containing the meta data.
int	update() Execute an updating statement, if this is possible.

Methods inherited from class org.h2.command.Command

cancel, checkCanceled, close, executeQuery, executeQueryLocal, executeUpdate, getMetaData, getMetaDataLocal, toString

Methods inherited from class java.lang.Object

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

Method Detail

getParameters

public ObjectArray<? 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

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

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

update

public int update()
           throws java.sql.SQLException

Description copied from class: Command

Execute an updating statement, if this is possible.

Overrides:

update in class Command

Returns:

the update count

Throws:

java.sql.SQLException - if the command is not an updating statement

query

public LocalResult query(int maxrows)
                  throws java.sql.SQLException

Description copied from class: Command

Execute a query statement, if this is possible.

Overrides:

query in class Command

Parameters:

maxrows - the maximum number of rows returned

Returns:

the local result set

Throws:

java.sql.SQLException - if the command is not a query

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 LocalResult queryMeta()
                      throws java.sql.SQLException

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

Throws:

java.sql.SQLException