org.h2.command.dml

Class Merge

java.lang.Object

org.h2.command.Prepared

org.h2.command.dml.CommandWithValues

org.h2.command.dml.Merge

All Implemented Interfaces:

DataChangeStatement

public class Merge
extends CommandWithValues
implements DataChangeStatement

This class represents the statement MERGE or the MySQL compatibility statement REPLACE

Field Summary

Fields inherited from class org.h2.command.dml.CommandWithValues

valuesExpressionList

Fields inherited from class org.h2.command.Prepared

create, parameters, prepareAlways, session, sqlStatement

Constructor Summary

Constructors

Constructor and Description
Merge(Session session, boolean isReplace)

Method Summary

Methods

Modifier and Type	Method and Description
void	collectDependencies(java.util.HashSet<DbObject> dependencies) Find and collect all DbObjects, this Prepared depends on.
java.lang.String	getPlanSQL(boolean alwaysQuote) Get the SQL statement with the execution plan.
java.lang.String	getStatementName() Return the name of this statement.
Table	getTable() Return the target table.
int	getType() Get the command type as defined in CommandInterface
boolean	isCacheable()
boolean	isTransactional() Check if this command is transactional.
void	prepare() Prepare this statement.
ResultInterface	queryMeta() Get an empty result set containing the meta data.
void	setColumns(Column[] columns)
void	setCommand(Command command) Set the command.
void	setDeltaChangeCollector(ResultTarget deltaChangeCollector, DataChangeDeltaTable.ResultOption deltaChangeCollectionMode) Set the delta change collector and collection mode.
void	setKeys(Column[] keys)
void	setQuery(Query query)
void	setTable(Table table)
int	update() Execute the statement.

Methods inherited from class org.h2.command.dml.CommandWithValues

addRow

Methods inherited from class org.h2.command.Prepared

checkCanceled, checkParameters, getCteCleanups, getCurrentRowNumber, getObjectId, getParameters, getPersistedObjectId, getSession, getSimpleSQL, getSQL, getSQL, isQuery, isReadOnly, needRecompile, query, setCteCleanups, setCurrentRowNumber, setParameterList, setPersistedObjectId, setPrepareAlways, setRow, setSession, setSQL, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.h2.command.dml.DataChangeStatement

getSQL

Constructor Detail

Merge

public Merge(Session session,
     boolean isReplace)

Method Detail

setCommand

public void setCommand(Command command)

Description copied from class: Prepared

Set the command.

Overrides:

setCommand in class Prepared

Parameters:

command - the new command

getTable

public Table getTable()

Description copied from interface: DataChangeStatement

Return the target table.

Specified by:

getTable in interface DataChangeStatement

Returns:

the target table

setTable

public void setTable(Table table)

setColumns

public void setColumns(Column[] columns)

setKeys

public void setKeys(Column[] keys)

setQuery

public void setQuery(Query query)

setDeltaChangeCollector

public void setDeltaChangeCollector(ResultTarget deltaChangeCollector,
                           DataChangeDeltaTable.ResultOption deltaChangeCollectionMode)

Description copied from interface: DataChangeStatement

Set the delta change collector and collection mode.

Specified by:

setDeltaChangeCollector in interface DataChangeStatement

Parameters:

deltaChangeCollector - target result

deltaChangeCollectionMode - collection mode

update

public int update()

Description copied from class: Prepared

Execute the statement.

Specified by:

update in interface DataChangeStatement

Overrides:

update in class Prepared

Returns:

the update count

getPlanSQL

public java.lang.String getPlanSQL(boolean alwaysQuote)

Description copied from class: Prepared

Get the SQL statement with the execution plan.

Overrides:

getPlanSQL in class Prepared

Parameters:

alwaysQuote - quote all identifiers

Returns:

the execution plan

prepare

public void prepare()

Description copied from class: Prepared

Prepare this statement.

Specified by:

prepare in interface DataChangeStatement

Overrides:

prepare in class Prepared

isTransactional

public boolean isTransactional()

Description copied from class: Prepared

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

Specified by:

isTransactional in class Prepared

Returns:

true if it is

queryMeta

public ResultInterface queryMeta()

Description copied from class: Prepared

Get an empty result set containing the meta data.

Specified by:

queryMeta in class Prepared

Returns:

the result set

getType

public int getType()

Description copied from class: Prepared

Get the command type as defined in CommandInterface

Specified by:

getType in class Prepared

Returns:

the statement type

getStatementName

public java.lang.String getStatementName()

Description copied from interface: DataChangeStatement

Return the name of this statement.

Specified by:

getStatementName in interface DataChangeStatement

Returns:

the short name of this statement.

isCacheable

public boolean isCacheable()

Overrides:

isCacheable in class Prepared

collectDependencies

public void collectDependencies(java.util.HashSet<DbObject> dependencies)

Description copied from class: Prepared

Find and collect all DbObjects, this Prepared depends on.

Overrides:

collectDependencies in class Prepared

Parameters:

dependencies - collection of dependencies to populate