Class DeleteConstantAction

java.lang.Object

org.apache.derby.impl.sql.execute.WriteCursorConstantAction

org.apache.derby.impl.sql.execute.DeleteConstantAction

All Implemented Interfaces:

Externalizable, Serializable, Formatable, TypedFormat, ConstantAction

public class DeleteConstantAction
extends WriteCursorConstantAction

This class describes compiled constants that are passed into DeleteResultSets.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
(package private) ConstantAction[]	dependentCActions
(package private) int	numColumns	This class implements Formatable.
(package private) ResultDescription	resultDescription

Fields inherited from class WriteCursorConstantAction

conglomId, deferred, heapSCOCI, indexCIDS, indexNames, indexSCOCIs, irgs, lockMode, singleRowSource, targetUUID

Fields inherited from interface ConstantAction

WHEN_MATCHED_THEN_DELETE, WHEN_MATCHED_THEN_UPDATE, WHEN_NOT_MATCHED_THEN_INSERT

Constructor Summary

Constructors

Constructor	Description
DeleteConstantAction()	Public niladic constructor.
DeleteConstantAction(long conglomId, StaticCompiledOpenConglomInfo heapSCOCI, IndexRowGenerator[] irgs, long[] indexCIDS, StaticCompiledOpenConglomInfo[] indexSCOCIs, boolean deferred, UUID targetUUID, int lockMode, FKInfo[] fkInfo, TriggerInfo triggerInfo, FormatableBitSet baseRowReadList, int[] baseRowReadMap, int[] streamStorableHeapColIds, int numColumns, boolean singleRowSource, ResultDescription resultDescription, ConstantAction[] dependentCActions, boolean underMerge)	Make the ConstantAction for an DELETE statement.

Method Summary

Modifier and Type	Method	Description
int	getTypeFormatId()	Get the formatID which corresponds to this class.
void	readExternal(ObjectInput in)	Read this object from a stream of stored objects.
void	writeExternal(ObjectOutput out)	Write this object to a stream of stored objects.

Methods inherited from class WriteCursorConstantAction

executeConstantAction, getBaseRowReadList, getBaseRowReadMap, getConglomerateId, getFKInfo, getIndexNameFromCID, getIndexNames, getProperty, getStreamStorableHeapColIds, getTargetProperties, getTriggerInfo, underMerge

Methods inherited from class Object

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

Field Details

numColumns

int numColumns

This class implements Formatable. But it is NOT used across either major or minor releases. It is only written persistently in stored prepared statements, not in the replication stage. SO, IT IS OK TO CHANGE ITS read/writeExternal.

dependentCActions

ConstantAction[] dependentCActions

resultDescription

ResultDescription resultDescription

Constructor Details

DeleteConstantAction

public DeleteConstantAction()

Public niladic constructor. Needed for Formatable interface to work.

DeleteConstantAction

DeleteConstantAction(long conglomId,
 StaticCompiledOpenConglomInfo heapSCOCI,
 IndexRowGenerator[] irgs,
 long[] indexCIDS,
 StaticCompiledOpenConglomInfo[] indexSCOCIs,
 boolean deferred,
 UUID targetUUID,
 int lockMode,
 FKInfo[] fkInfo,
 TriggerInfo triggerInfo,
 FormatableBitSet baseRowReadList,
 int[] baseRowReadMap,
 int[] streamStorableHeapColIds,
 int numColumns,
 boolean singleRowSource,
 ResultDescription resultDescription,
 ConstantAction[] dependentCActions,
 boolean underMerge)

Make the ConstantAction for an DELETE statement.

Parameters:

conglomId - Conglomerate ID.

heapSCOCI - StaticCompiledOpenConglomInfo for heap.

irgs - Index descriptors

indexCIDS - Conglomerate IDs of indices

indexSCOCIs - StaticCompiledOpenConglomInfos for indexes.

deferred - True means process as a deferred insert.

targetUUID - UUID of target table

lockMode - The lock mode to use (row or table, see TransactionController)

fkInfo - Array of structures containing foreign key info, if any (may be null)

triggerInfo - Array of structures containing trigger info, if any (may be null)

baseRowReadList - Map of columns read in. 1 based.

streamStorableHeapColIds - Null for non rep. (0 based)

numColumns - Number of columns to read.

singleRowSource - Whether or not source is a single row source

underMerge - True if this is an action of a MERGE statement.

Method Details

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
ClassNotFoundException

Description copied from class: WriteCursorConstantAction

Read this object from a stream of stored objects.

Specified by:

readExternal in interface Externalizable

Overrides:

readExternal in class WriteCursorConstantAction

Parameters:

in - read this.

Throws:

IOException - thrown on error

ClassNotFoundException - thrown on error

See Also:

• Externalizable.readExternal(ObjectInput)

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Description copied from class: WriteCursorConstantAction

Write this object to a stream of stored objects.

Specified by:

writeExternal in interface Externalizable

Overrides:

writeExternal in class WriteCursorConstantAction

Parameters:

out - write bytes here.

Throws:

IOException - thrown on error

getTypeFormatId

public int getTypeFormatId()

Get the formatID which corresponds to this class.

Returns:

the formatID of this class