org.apache.derby.impl.sql.execute

Class UpdatableVTIConstantAction

java.lang.Object

org.apache.derby.impl.sql.execute.UpdatableVTIConstantAction

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, Formatable, TypedFormat, ConstantAction

public class UpdatableVTIConstantAction
extends java.lang.Object

This class describes compiled constants that are passed into Updatable VTIResultSets.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
int[]	changedColumnIds This class implements Formatable.
int	statementType

Fields inherited from interface org.apache.derby.iapi.sql.execute.ConstantAction

WHEN_MATCHED_THEN_DELETE, WHEN_MATCHED_THEN_UPDATE, WHEN_NOT_MATCHED_THEN_INSERT

Constructor Summary

Constructors

Constructor and Description
UpdatableVTIConstantAction() Public niladic constructor.

Method Summary

Modifier and Type	Method and Description
void	executeConstantAction(Activation activation) NOP routine.
FormatableBitSet	getBaseRowReadList()
int[]	getBaseRowReadMap()
long	getConglomerateId() Get the conglomerate id for the changed heap.
java.lang.String	getIndexNameFromCID(long indexCID) get the index name given the conglomerate id of the index.
java.lang.String[]	getIndexNames()
java.lang.String	getProperty(java.lang.String key) The the value of the specified key, if it exists, from the targetProperties.
int[]	getStreamStorableHeapColIds()
java.util.Properties	getTargetProperties() Get the targetProperties from the constant action.
int	getTypeFormatId() Get the formatID which corresponds to this class.
void	readExternal(java.io.ObjectInput in) Read this object from a stream of stored objects.
boolean	underMerge() Return true if this is an action of a MERGE statement
void	writeExternal(java.io.ObjectOutput out) Write this object to a stream of stored objects.

Methods inherited from class java.lang.Object

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

Field Detail

changedColumnIds

public int[] changedColumnIds

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.

statementType

public int statementType

Constructor Detail

UpdatableVTIConstantAction

public UpdatableVTIConstantAction()

Public niladic constructor. Needed for Formatable interface to work.

Method Detail

getTypeFormatId

public int getTypeFormatId()

Get the formatID which corresponds to this class.

Returns:

the formatID of this class

executeConstantAction

public final void executeConstantAction(Activation activation)
                                 throws StandardException

NOP routine. The work is done in InsertResultSet.

Specified by:

executeConstantAction in interface ConstantAction

Parameters:

activation - The execution environment for this constant action.

Throws:

StandardException - Thrown on failure

See Also:

ConstantAction.executeConstantAction(org.apache.derby.iapi.sql.Activation)

readExternal

public void readExternal(java.io.ObjectInput in)
                  throws java.io.IOException,
                         java.lang.ClassNotFoundException

Read this object from a stream of stored objects.

Specified by:

readExternal in interface java.io.Externalizable

Parameters:

in - read this.

Throws:

java.io.IOException - thrown on error

java.lang.ClassNotFoundException - thrown on error

writeExternal

public void writeExternal(java.io.ObjectOutput out)
                   throws java.io.IOException

Write this object to a stream of stored objects.

Specified by:

writeExternal in interface java.io.Externalizable

Parameters:

out - write bytes here.

Throws:

java.io.IOException - thrown on error

underMerge

public boolean underMerge()

Return true if this is an action of a MERGE statement

getConglomerateId

public long getConglomerateId()

Get the conglomerate id for the changed heap.

Returns:

the conglomerate id.

getTargetProperties

public java.util.Properties getTargetProperties()

Get the targetProperties from the constant action.

Returns:

The targetProperties

getProperty

public java.lang.String getProperty(java.lang.String key)

The the value of the specified key, if it exists, from the targetProperties.

Parameters:

key - The key to search for

Returns:

The value for the specified key if it exists, otherwise null. (Return null if targetProperties is null.)

getBaseRowReadList

public FormatableBitSet getBaseRowReadList()

getBaseRowReadMap

public int[] getBaseRowReadMap()

getStreamStorableHeapColIds

public int[] getStreamStorableHeapColIds()

getIndexNameFromCID

public java.lang.String getIndexNameFromCID(long indexCID)

get the index name given the conglomerate id of the index.

Parameters:

indexCID - conglomerate ID of the index.

Returns:

index name of given index.

getIndexNames

public java.lang.String[] getIndexNames()