Apache Derby Database Engine and Embedded JDBC Driver 10.17.1.0 · org.apache.derby.impl.sql.execute.DMLWriteResultSet

Field Summary

Modifier and Type	Field and Description
protected int[]	baseRowReadMap
protected DataValueDescriptor[]	cachedDestinations This array contains data value descriptors that can be used (and reused) to hold the normalized column values.
protected WriteCursorConstantAction	constantAction
protected DynamicCompiledOpenConglomInfo	heapDCOCI
protected DynamicCompiledOpenConglomInfo[]	indexDCOCIs
private boolean	needToObjectifyStream
protected ResultDescription	resultDescription
public long	rowCount
protected int[]	streamStorableHeapColIds

Inherited from org.apache.derby.impl.sql.execute.NoRowsResultSetImpl:: activation beginExecutionTime beginTime endExecutionTime endTime lcc

Constructor Summary

Access	Constructor and Description
pack-priv	DMLWriteResultSet(Activation an activation activation) Constructor
pack-priv	DMLWriteResultSet(Activation activation, ConstantAction constantAction)

Method Summary

Modifier and Type	Method and Description
pack-priv int	Returns: the lock mode (record or table) to use to open the result set decodeLockMode(int the compiled encoded lock mode for this query lockMode) Decode the update lock mode.
pack-priv String	Returns: index name of given index. getIndexNameFromCID(long conglomerate ID of the index. indexCID) get the index name given the conglomerate id of the index.
protected ExecRow	Returns: The next row in the result set getNextRowCore(NoPutResultSet SourceResultSet Also look at Track#2432/change 12433 source) Get next row from the source result set.
public ResultDescription	Returns: the description of the inserted rows getResultDescription() Overrides org.apache.derby.impl.sql.execute.NoRowsResultSetImpl.getResultDescription. Implements org.apache.derby.iapi.sql.ResultSet.getResultDescription. Returns the description of the inserted rows.
protected ExecRow	Returns: the deferred sparse row makeDeferredSparseRow(ExecRow the deferred non-sparse row deferredBaseRow, FormatableBitSet the columns to include (1-based bit map) baseRowReadList, LanguageConnectionContext the language connection context lcc) For deferred update, get a deferred sparse row based on the deferred non-sparse row.
public final long	modifiedRowCount() Overrides org.apache.derby.impl.sql.execute.NoRowsResultSetImpl.modifiedRowCount. Implements org.apache.derby.iapi.sql.ResultSet.modifiedRowCount. Returns zero.
protected ExecRow	Returns: the normalized row normalizeRow(NoPutResultSet the result set for which this action is to be performed sourceResultSet, ExecRow the row to be normalized row) Normalize a row as part of the INSERT/UPDATE action of a MERGE statement.
private void	objectifyStreams(ExecRow row)
public void	rememberConstraint(UUID cid)

Field Detail

baseRowReadMap	back to summary
protected int[] baseRowReadMap

cachedDestinations	back to summary
protected DataValueDescriptor[] cachedDestinations This array contains data value descriptors that can be used (and reused) to hold the normalized column values.

constantAction	back to summary
protected WriteCursorConstantAction constantAction

heapDCOCI	back to summary
protected DynamicCompiledOpenConglomInfo heapDCOCI

indexDCOCIs	back to summary
protected DynamicCompiledOpenConglomInfo[] indexDCOCIs

needToObjectifyStream	back to summary
private boolean needToObjectifyStream

resultDescription	back to summary
protected ResultDescription resultDescription

rowCount	back to summary
public long rowCount

streamStorableHeapColIds	back to summary
protected int[] streamStorableHeapColIds

Constructor Detail

DMLWriteResultSet	back to summary
pack-priv DMLWriteResultSet(Activation activation) throws StandardException Constructor Parameters activation:Activation an activation Exceptions StandardException: on error

DMLWriteResultSet

back to summary

pack-priv DMLWriteResultSet(Activation activation) throws StandardException

Constructor

Parameters

activation:Activation: an activation

Exceptions

StandardException:: on error

DMLWriteResultSet	back to summary
pack-priv DMLWriteResultSet(Activation activation, ConstantAction constantAction) throws StandardException

Method Detail

decodeLockMode	back to summary
pack-priv int decodeLockMode(int lockMode) Decode the update lock mode. The value for update lock mode is in the second most significant byte for TransactionControl.SERIALIZABLE_ISOLATION_LEVEL isolation level. Otherwise (REPEATABLE READ, READ COMMITTED, and READ UNCOMMITTED) the lock mode is located in the least significant byte. This is done to override the optimizer choice to provide maximum concurrency of record level locking except in SERIALIZABLE where table level locking is required in heap scans for correctness. See org.apache.derby.impl.sql.compile.FromBaseTable#updateTargetLockMode Parameters lockMode:int the compiled encoded lock mode for this query Returns:int the lock mode (record or table) to use to open the result set

decodeLockMode

back to summary

pack-priv int decodeLockMode(int lockMode)

Decode the update lock mode.

The value for update lock mode is in the second most significant byte for TransactionControl.SERIALIZABLE_ISOLATION_LEVEL isolation level. Otherwise (REPEATABLE READ, READ COMMITTED, and READ UNCOMMITTED) the lock mode is located in the least significant byte.

This is done to override the optimizer choice to provide maximum concurrency of record level locking except in SERIALIZABLE where table level locking is required in heap scans for correctness. See org.apache.derby.impl.sql.compile.FromBaseTable#updateTargetLockMode

Parameters

lockMode:int: the compiled encoded lock mode for this query

Returns:int

the lock mode (record or table) to use to open the result set

getIndexNameFromCID	back to summary
pack-priv String getIndexNameFromCID(long indexCID) get the index name given the conglomerate id of the index. Parameters indexCID:long conglomerate ID of the index. Returns:String index name of given index.

getIndexNameFromCID

back to summary

pack-priv String getIndexNameFromCID(long indexCID)

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

Parameters

indexCID:long: conglomerate ID of the index.

Returns:String

index name of given index.

getNextRowCore	back to summary
protected ExecRow getNextRowCore(NoPutResultSet source) throws StandardException Get next row from the source result set. Parameters source:NoPutResultSet SourceResultSet Also look at Track#2432/change 12433 Returns:ExecRow The next row in the result set Exceptions StandardException: Standard error policy

getNextRowCore

back to summary

protected ExecRow getNextRowCore(NoPutResultSet source) throws StandardException

Get next row from the source result set.

Parameters

source:NoPutResultSet: SourceResultSet Also look at Track#2432/change 12433

Returns:ExecRow

The next row in the result set

Exceptions

StandardException:: Standard error policy

getResultDescription	back to summary
public ResultDescription getResultDescription() Overrides org.apache.derby.impl.sql.execute.NoRowsResultSetImpl.getResultDescription. Implements org.apache.derby.iapi.sql.ResultSet.getResultDescription. Returns the description of the inserted rows. Revisit Do we want this to return NULL instead? Returns:ResultDescription the description of the inserted rows Annotations @Override

getResultDescription

back to summary

public ResultDescription getResultDescription()

Overrides org.apache.derby.impl.sql.execute.NoRowsResultSetImpl.getResultDescription.

Implements org.apache.derby.iapi.sql.ResultSet.getResultDescription.

Returns the description of the inserted rows.

Revisit

Do we want this to return NULL instead?

Returns:ResultDescription

the description of the inserted rows

Annotations

@Override

makeDeferredSparseRow	back to summary
protected ExecRow makeDeferredSparseRow(ExecRow deferredBaseRow, FormatableBitSet baseRowReadList, LanguageConnectionContext lcc) throws StandardException For deferred update, get a deferred sparse row based on the deferred non-sparse row. Share the underlying columns. If there is no column bit map, make them the same row. Parameters deferredBaseRow:ExecRow the deferred non-sparse row baseRowReadList:FormatableBitSet the columns to include (1-based bit map) lcc:LanguageConnectionContext the language connection context Returns:ExecRow the deferred sparse row Exceptions StandardException: Thrown on error

makeDeferredSparseRow

back to summary

protected ExecRow makeDeferredSparseRow(ExecRow deferredBaseRow, FormatableBitSet baseRowReadList, LanguageConnectionContext lcc) throws StandardException

For deferred update, get a deferred sparse row based on the deferred non-sparse row. Share the underlying columns. If there is no column bit map, make them the same row.

Parameters

deferredBaseRow:ExecRow: the deferred non-sparse row
baseRowReadList:FormatableBitSet: the columns to include (1-based bit map)
lcc:LanguageConnectionContext: the language connection context

Returns:ExecRow

the deferred sparse row

Exceptions

StandardException:: Thrown on error

modifiedRowCount	back to summary
public final long modifiedRowCount() Overrides org.apache.derby.impl.sql.execute.NoRowsResultSetImpl.modifiedRowCount. Implements org.apache.derby.iapi.sql.ResultSet.modifiedRowCount. Doc from org.apache.derby.impl.sql.execute.NoRowsResultSetImpl.modifiedRowCount. Returns zero. Returns:long Doc from org.apache.derby.iapi.sql.ResultSet.modifiedRowCount. The number of rows affect by the statement, so far. Annotations @Override

modifiedRowCount

back to summary

public final long modifiedRowCount()

Overrides org.apache.derby.impl.sql.execute.NoRowsResultSetImpl.modifiedRowCount.

Implements org.apache.derby.iapi.sql.ResultSet.modifiedRowCount.

Doc from org.apache.derby.impl.sql.execute.NoRowsResultSetImpl.modifiedRowCount.

Returns zero.

Returns:long

Doc from org.apache.derby.iapi.sql.ResultSet.modifiedRowCount.

The number of rows affect by the statement, so far.

Annotations

@Override

normalizeRow	back to summary
protected ExecRow normalizeRow(NoPutResultSet sourceResultSet, ExecRow row) throws StandardException Normalize a row as part of the INSERT/UPDATE action of a MERGE statement. This applies logic usually found in a NormalizeResultSet, which is missing for the MERGE statement. Parameters sourceResultSet:NoPutResultSet the result set for which this action is to be performed row:ExecRow the row to be normalized Returns:ExecRow the normalized row Exceptions StandardException: Standard error policy

normalizeRow

back to summary

protected ExecRow normalizeRow(NoPutResultSet sourceResultSet, ExecRow row) throws StandardException

Normalize a row as part of the INSERT/UPDATE action of a MERGE statement. This applies logic usually found in a NormalizeResultSet, which is missing for the MERGE statement.

Parameters

sourceResultSet:NoPutResultSet: the result set for which this action is to be performed
row:ExecRow: the row to be normalized

Returns:ExecRow

the normalized row

Exceptions

StandardException:: Standard error policy

objectifyStreams	back to summary
private void objectifyStreams(ExecRow row) throws StandardException

rememberConstraint	back to summary
public void rememberConstraint(UUID cid) throws StandardException

public abstract Class DMLWriteResultSet

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