org.h2.command.dml

Class Update

java.lang.Object

org.h2.command.Prepared

org.h2.command.dml.Update

All Implemented Interfaces:

DataChangeStatement

public class Update
extends Prepared
implements DataChangeStatement

This class represents the statement UPDATE

Field Summary

Fields inherited from class org.h2.command.Prepared

create, parameters, prepareAlways, session, sqlStatement

Constructor Summary

Constructors

Constructor and Description
Update(Session session)

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.
Expression	getCondition()
java.lang.String	getPlanSQL(boolean alwaysQuote) Get the SQL statement with the execution plan.
TableFilter	getSourceTableFilter()
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	setAssignment(Column column, Expression expression) Add an assignment of the form column = expression.
void	setCondition(Expression condition)
void	setDeltaChangeCollector(ResultTarget deltaChangeCollector, DataChangeDeltaTable.ResultOption deltaChangeCollectionMode) Set the delta change collector and collection mode.
void	setLimit(Expression limit)
void	setSourceTableFilter(TableFilter sourceTableFilter)
void	setTableFilter(TableFilter tableFilter)
void	setUpdatedKeysCollector(java.util.HashSet<java.lang.Long> updatedKeysCollector) Sets the collector of updated keys.
void	setUpdateToCurrentValuesReturnsZero(boolean updateToCurrentValuesReturnsZero) Sets expected update count for update to current values case.
int	update() Execute the statement.

Methods inherited from class org.h2.command.Prepared

checkCanceled, checkParameters, getCteCleanups, getCurrentRowNumber, getObjectId, getParameters, getPersistedObjectId, getSession, getSimpleSQL, getSQL, getSQL, isQuery, isReadOnly, needRecompile, query, setCommand, 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

Update

public Update(Session session)

Method Detail

getTable

public Table getTable()

Description copied from interface: DataChangeStatement

Return the target table.

Specified by:

getTable in interface DataChangeStatement

Returns:

the target table

setTableFilter

public void setTableFilter(TableFilter tableFilter)

setCondition

public void setCondition(Expression condition)

getCondition

public Expression getCondition()

setAssignment

public void setAssignment(Column column,
                 Expression expression)

Add an assignment of the form column = expression.

Parameters:

column - the column

expression - the expression

setUpdatedKeysCollector

public void setUpdatedKeysCollector(java.util.HashSet<java.lang.Long> updatedKeysCollector)

Sets the collector of updated keys.

Parameters:

updatedKeysCollector - the collector of updated keys

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.

setLimit

public void setLimit(Expression limit)

isCacheable

public boolean isCacheable()

Overrides:

isCacheable in class Prepared

getSourceTableFilter

public TableFilter getSourceTableFilter()

setSourceTableFilter

public void setSourceTableFilter(TableFilter sourceTableFilter)

setUpdateToCurrentValuesReturnsZero

public void setUpdateToCurrentValuesReturnsZero(boolean updateToCurrentValuesReturnsZero)

Sets expected update count for update to current values case.

Parameters:

updateToCurrentValuesReturnsZero - if zero should be returned as update count if update set row to current values

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