org.h2.command.dml

Class MergeUsing

java.lang.Object

org.h2.command.Prepared

org.h2.command.dml.MergeUsing

All Implemented Interfaces:

DataChangeStatement

public class MergeUsing
extends Prepared
implements DataChangeStatement

This class represents the statement syntax MERGE INTO table alias USING... It does not replace the MERGE INTO... KEYS... form.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MergeUsing.When Abstract WHEN command of the MERGE statement.
static class	MergeUsing.WhenMatched
static class	MergeUsing.WhenNotMatched

Field Summary

Fields inherited from class org.h2.command.Prepared

create, parameters, prepareAlways, session, sqlStatement

Constructor Summary

Constructors

Constructor and Description
MergeUsing(Session session, TableFilter targetTableFilter)

Method Summary

Methods

Modifier and Type	Method and Description
void	addWhen(MergeUsing.When w) Adds WHEN command.
void	collectDependencies(java.util.HashSet<DbObject> dependencies) Find and collect all DbObjects, this Prepared depends on.
Expression	getOnCondition()
java.lang.String	getPlanSQL(boolean alwaysQuote) Get the SQL statement with the execution plan.
Query	getQuery()
java.lang.String	getQueryAlias()
TableFilter	getSourceTableFilter()
java.lang.String	getStatementName() Return the name of this statement.
Table	getTable() Return the target table.
Table	getTargetTable()
TableFilter	getTargetTableFilter()
int	getType() Get the command type as defined in CommandInterface
java.util.ArrayList<MergeUsing.When>	getWhen()
boolean	hasCombinedMatchedClause() Whether any of the "when" parts contain both an update and a delete part.
boolean	isTransactional() Check if this command is transactional.
protected void	merge(Row sourceRow) Merge the given row.
void	prepare() Prepare this statement.
ResultInterface	queryMeta() Get an empty result set containing the meta data.
void	setDeltaChangeCollector(ResultTarget deltaChangeCollector, DataChangeDeltaTable.ResultOption deltaChangeCollectionMode) Set the delta change collector and collection mode.
void	setOnCondition(Expression condition)
void	setQuery(Query query)
void	setQueryAlias(java.lang.String alias)
void	setSourceTableFilter(TableFilter sourceTableFilter)
void	setTargetTable(Table targetTable)
void	setTargetTableFilter(TableFilter targetTableFilter)
int	update() Execute the statement.

Methods inherited from class org.h2.command.Prepared

checkCanceled, checkParameters, getCteCleanups, getCurrentRowNumber, getObjectId, getParameters, getPersistedObjectId, getSession, getSimpleSQL, getSQL, getSQL, isCacheable, 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

MergeUsing

public MergeUsing(Session session,
          TableFilter targetTableFilter)

Method Detail

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

merge

protected void merge(Row sourceRow)

Merge the given row.

Parameters:

sourceRow - the row

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

setSourceTableFilter

public void setSourceTableFilter(TableFilter sourceTableFilter)

getSourceTableFilter

public TableFilter getSourceTableFilter()

setOnCondition

public void setOnCondition(Expression condition)

getOnCondition

public Expression getOnCondition()

getWhen

public java.util.ArrayList<MergeUsing.When> getWhen()

addWhen

public void addWhen(MergeUsing.When w)

Adds WHEN command.

Parameters:

w - new WHEN command to add (update, delete or insert).

setQueryAlias

public void setQueryAlias(java.lang.String alias)

getQueryAlias

public java.lang.String getQueryAlias()

getQuery

public Query getQuery()

setQuery

public void setQuery(Query query)

getTable

public Table getTable()

Description copied from interface: DataChangeStatement

Return the target table.

Specified by:

getTable in interface DataChangeStatement

Returns:

the target table

setTargetTableFilter

public void setTargetTableFilter(TableFilter targetTableFilter)

getTargetTableFilter

public TableFilter getTargetTableFilter()

getTargetTable

public Table getTargetTable()

setTargetTable

public void setTargetTable(Table targetTable)

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.

hasCombinedMatchedClause

public boolean hasCombinedMatchedClause()

Whether any of the "when" parts contain both an update and a delete part.

Returns:

the if one part does

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