Package org.h2.command.dml

Class MergeUsing.When

java.lang.Object

org.h2.command.dml.MergeUsing.When

All Implemented Interfaces:

HasSQL

Direct Known Subclasses:

MergeUsing.WhenMatchedThenDelete, MergeUsing.WhenMatchedThenUpdate, MergeUsing.WhenNotMatched

Enclosing class:

MergeUsing

public abstract class MergeUsing.When
extends Object
implements HasSQL

Abstract WHEN command of the MERGE statement.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) Expression	andCondition	AND condition of the command.

Fields inherited from interface org.h2.util.HasSQL

ADD_PLAN_INFORMATION, DEFAULT_SQL_FLAGS, NO_CASTS, QUOTE_ONLY_WHEN_REQUIRED, REPLACE_LOBS_FOR_TRACE, TRACE_SQL_FLAGS

Constructor Summary

Constructors

Constructor	Description
When()

Method Summary

Modifier and Type	Method	Description
(package private) abstract void	checkRights()	Checks user's INSERT, UPDATE, DELETE permission in appropriate cases.
(package private) void	collectDependencies(ExpressionVisitor visitor)	Find and collect all DbObjects, this When object depends on.
(package private) abstract int	evaluateTriggerMasks()	Evaluates trigger mask (UPDATE, INSERT, DELETE).
StringBuilder	getSQL(StringBuilder builder, int sqlFlags)	Appends the SQL statement of this object to the specified builder.
(package private) abstract void	merge(SessionLocal session, ResultTarget deltaChangeCollector, DataChangeDeltaTable.ResultOption deltaChangeCollectionMode)	Merges rows.
(package private) boolean	prepare(SessionLocal session)	Prepares WHEN command.
void	setAndCondition(Expression andCondition)	Sets the specified AND condition.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.h2.util.HasSQL

getSQL, getTraceSQL

Field Details

andCondition

Expression andCondition

AND condition of the command.

Constructor Details

When

When()

Method Details

setAndCondition

public void setAndCondition(Expression andCondition)

Sets the specified AND condition.

Parameters:

andCondition - AND condition to set

merge

abstract void merge(SessionLocal session,
 ResultTarget deltaChangeCollector,
 DataChangeDeltaTable.ResultOption deltaChangeCollectionMode)

Merges rows.

Parameters:

session - the session

deltaChangeCollector - target result

deltaChangeCollectionMode - collection mode

prepare

boolean prepare(SessionLocal session)

Prepares WHEN command.

Parameters:

session - the session

Returns:

false if this clause may be removed

evaluateTriggerMasks

abstract int evaluateTriggerMasks()

Evaluates trigger mask (UPDATE, INSERT, DELETE).

Returns:

the trigger mask.

checkRights

abstract void checkRights()

Checks user's INSERT, UPDATE, DELETE permission in appropriate cases.

collectDependencies

void collectDependencies(ExpressionVisitor visitor)

Find and collect all DbObjects, this When object depends on.

Parameters:

visitor - the expression visitor

getSQL

public StringBuilder getSQL(StringBuilder builder,
 int sqlFlags)

Description copied from interface: HasSQL

Appends the SQL statement of this object to the specified builder.

Specified by:

getSQL in interface HasSQL

Parameters:

builder - string builder

sqlFlags - formatting flags

Returns:

the specified string builder