Apache Derby Database Engine and Embedded JDBC Driver 10.17.1.0 · org.apache.derby.impl.store.access.sort.MergeInserter

Field Summary

Modifier and Type	Field and Description
private boolean	avoidMergeRun
private long	beginMemoryUsage Information about memory usage to dynamically tune the in-memory sort buffer size.
private Vector<Long>	mergeRuns A vector of the conglomerate ids of the merge runs.
private int	runSize
private MergeSort	sort The sort this inserter is for.
private SortBuffer	sortBuffer An in-memory ordered set that is used to sort rows before they're sent to merge runs.
pack-priv Vector<Integer>	stat_mergeRunsSize
pack-priv int	stat_numMergeRuns
pack-priv int	stat_numRowsInput
pack-priv int	stat_numRowsOutput
pack-priv String	stat_sortType
private int	totalRunSize
private TransactionManager	tran The transaction this inserter is in.

Constructor Summary

Access	Constructor and Description
pack-priv	MergeInserter()

Method Summary

Modifier and Type	Method and Description
public void	completedInserts() Implements org.apache.derby.iapi.store.access.SortController.completedInserts. Called when the caller has completed inserting rows into the sorter.
public SortInfo	Returns: The SortInfo object which contains info about current sort. getSortInfo() Implements org.apache.derby.iapi.store.access.SortController.getSortInfo. Return SortInfo object which contains information about the current sort.
pack-priv boolean	Returns: true if initialization was successful initialize(MergeSort sort, TransactionManager tran) Initialize this inserter.
public void	insert(DataValueDescriptor[] The row to insert into the SortController. The stored representations of the row's columns are copied into a new row somewhere in the sort. row) Implements org.apache.derby.iapi.store.access.SortController.insert. Insert a row into the sort.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

avoidMergeRun	back to summary
private boolean avoidMergeRun

beginMemoryUsage	back to summary
private long beginMemoryUsage Information about memory usage to dynamically tune the in-memory sort buffer size.

mergeRuns	back to summary
private Vector<Long> mergeRuns A vector of the conglomerate ids of the merge runs.

runSize	back to summary
private int runSize

sort	back to summary
private MergeSort sort The sort this inserter is for.

sortBuffer	back to summary
private SortBuffer sortBuffer An in-memory ordered set that is used to sort rows before they're sent to merge runs.

stat_mergeRunsSize	back to summary
pack-priv Vector<Integer> stat_mergeRunsSize

stat_numMergeRuns	back to summary
pack-priv int stat_numMergeRuns

stat_numRowsInput	back to summary
pack-priv int stat_numRowsInput

stat_numRowsOutput	back to summary
pack-priv int stat_numRowsOutput

stat_sortType	back to summary
pack-priv String stat_sortType

totalRunSize	back to summary
private int totalRunSize

tran	back to summary
private TransactionManager tran The transaction this inserter is in.

Constructor Detail

MergeInserter	back to summary
pack-priv MergeInserter()

Method Detail

completedInserts back to summary

completedInserts	back to summary
public void completedInserts() Implements org.apache.derby.iapi.store.access.SortController.completedInserts. Called when the caller has completed inserting rows into the sorter. See Also `SortController#completedInserts`

public void completedInserts()

Implements org.apache.derby.iapi.store.access.SortController.completedInserts.

Called when the caller has completed inserting rows into the sorter.

See Also: SortController#completedInserts

getSortInfo back to summary

getSortInfo	back to summary
public SortInfo getSortInfo() throws StandardException Implements org.apache.derby.iapi.store.access.SortController.getSortInfo. Return SortInfo object which contains information about the current sort. Returns:SortInfo The SortInfo object which contains info about current sort. Exceptions StandardException: Standard exception policy. See Also `SortInfo`

public SortInfo getSortInfo() throws StandardException

Implements org.apache.derby.iapi.store.access.SortController.getSortInfo.

Return SortInfo object which contains information about the current sort.

Returns:SortInfo

The SortInfo object which contains info about current sort.

Exceptions

StandardException:: Standard exception policy.

See Also

SortInfo

initialize	back to summary
pack-priv boolean initialize(MergeSort sort, TransactionManager tran) Initialize this inserter. Returns:boolean true if initialization was successful

initialize

back to summary

pack-priv boolean initialize(MergeSort sort, TransactionManager tran)

Initialize this inserter.

Returns:boolean: true if initialization was successful

insert back to summary

insert	back to summary
public void insert(DataValueDescriptor[] row) throws StandardException Implements org.apache.derby.iapi.store.access.SortController.insert. Insert a row into the sort. Parameters row:DataValueDescriptor[] Doc from org.apache.derby.iapi.store.access.SortController.insert. The row to insert into the SortController. The stored representations of the row's columns are copied into a new row somewhere in the sort. Exceptions StandardException: Doc from org.apache.derby.iapi.store.access.SortController.insert. Standard exception policy. See Also `SortController#insert`

public void insert(DataValueDescriptor[] row) throws StandardException

Implements org.apache.derby.iapi.store.access.SortController.insert.

Insert a row into the sort.

Parameters

row:DataValueDescriptor[]

Doc from org.apache.derby.iapi.store.access.SortController.insert.

The row to insert into the SortController. The stored representations of the row's columns are copied into a new row somewhere in the sort.

Exceptions