Class BTreeController
- java.lang.Object
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- org.apache.derby.impl.store.access.btree.OpenBTree
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- org.apache.derby.impl.store.access.btree.BTreeController
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- All Implemented Interfaces:
ConglomerateController
,ConglomPropertyQueryable
- Direct Known Subclasses:
B2IController
public class BTreeController extends OpenBTree implements ConglomerateController
A b-tree controller corresponds to an instance of an open b-tree conglomerate.Concurrency Notes
The concurrency rules are derived from OpenBTree.
- See Also:
OpenBTree
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Field Summary
Fields Modifier and Type Field Description (package private) boolean
get_insert_row_lock
Whether to get lock on the row being inserted, usually this lock has already been gotten when the row was inserted into the base table.private static int
MATCH_FOUND
private static int
NO_MATCH
private static int
RESCAN_REQUIRED
(package private) DataValueDescriptor[]
scratch_template
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Fields inherited from class org.apache.derby.impl.store.access.btree.OpenBTree
btree_undo, container, err_containerid, init_lock_level, init_open_user_scans, runtime_mem
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Fields inherited from interface org.apache.derby.iapi.store.access.ConglomerateController
LOCK_INS, LOCK_INS_PREVKEY, LOCK_READ, LOCK_UPD, LOCK_UPDATE_LOCKS, ROWISDUPLICATE
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Constructor Summary
Constructors Constructor Description BTreeController()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
close()
Close the conglomerate controller.boolean
closeForEndTransaction(boolean closeHeldScan)
Close conglomerate controller as part of terminating a transaction.private int
compareLeftAndRightSiblings(DataValueDescriptor[] rowToInsert, int insert_slot, LeafControlRow targetleaf)
Compares immidiate left and right records to check for duplicates.private int
compareNextRecord(int slot, LeafControlRow leaf, DataValueDescriptor[] rows, DataValueDescriptor[] oldRows)
Compares the new record with the one at slot or the one right to it.private int
comparePreviousRecord(int slot, LeafControlRow leaf, DataValueDescriptor[] rows, DataValueDescriptor[] oldRows)
Compares the oldrow with the one at 'slot' or the one left to it.private int
compareRowsForInsert(DataValueDescriptor[] originalRow, DataValueDescriptor[] newRow, LeafControlRow leaf, int slot)
Compares two rows for insert.boolean
delete(RowLocation loc)
Delete a row from the conglomerate.private boolean
do_load_insert(DataValueDescriptor[] rowToInsert, LeafControlRow leaf, int insert_slot)
Just insert the row on the current page/slot if it fits.private LeafControlRow
do_load_split(DataValueDescriptor[] rowToInsert, LeafControlRow leaf)
Create room to insert a row to the right of the largest key in table.private int
doIns(DataValueDescriptor[] rowToInsert)
Insert a row into the conglomerate.boolean
fetch(RowLocation loc, DataValueDescriptor[] row, FormatableBitSet validColumns)
Fetch the row at the given location.boolean
fetch(RowLocation loc, DataValueDescriptor[] row, FormatableBitSet validColumns, boolean waitForLock)
Fetch the row at the given location.java.util.Properties
getInternalTablePropertySet(java.util.Properties prop)
Request set of properties associated with a table.void
getTableProperties(java.util.Properties prop)
Request the system properties associated with a table.void
init(TransactionManager xact_manager, boolean hold, ContainerHandle container, Transaction rawtran, int open_mode, int lock_level, BTreeLockingPolicy btree_locking_policy, BTree conglomerate, LogicalUndo undo, StaticCompiledOpenConglomInfo static_info, DynamicCompiledOpenConglomInfo dynamic_info)
Initialize the controller for use.int
insert(DataValueDescriptor[] row)
Insert a row into the conglomerate.void
insertAndFetchLocation(DataValueDescriptor[] row, RowLocation templateRowLocation)
Insert a row into the conglomerate, and store its location in the provided template row location.boolean
isKeyed()
Return whether this is a keyed conglomerate.long
load(TransactionManager xact_manager, boolean createConglom, RowLocationRetRowSource rowSource)
Load rows from rowSource into the opened btree.boolean
lockRow(long page_num, int record_id, int lock_operation, boolean wait, int lock_duration)
Lock the given record id/page num pair.boolean
lockRow(RowLocation loc, int lock_operation, boolean wait, int lock_duration)
Lock the given row location.RowLocation
newRowLocationTemplate()
Return a row location object of the correct type to be used in calls to insertAndFetchLocation.private boolean
reclaim_deleted_rows(OpenBTree open_btree, long pageno)
Attempt to reclaim committed deleted rows from the page.boolean
replace(RowLocation loc, DataValueDescriptor[] row, FormatableBitSet validColumns)
Replace the entire row at the given location.private long
start_xact_and_dosplit(boolean attempt_to_reclaim_deleted_rows, long leaf_pageno, DataValueDescriptor[] scratch_template, DataValueDescriptor[] rowToInsert, int flag)
Start an internal transaction and do the split.void
unlockRowAfterRead(RowLocation loc, boolean forUpdate, boolean row_qualifies)
UnLock the given row location.-
Methods inherited from class org.apache.derby.impl.store.access.btree.OpenBTree
checkConsistency, debugConglomerate, getColumnSortOrderInfo, getConglomerate, getContainer, getContainerHandle, getEstimatedRowCount, getHeight, getHold, getLockingPolicy, getLockLevel, getOpenMode, getRawTran, getRuntimeMem, getSpaceInfo, getXactMgr, init, isClosed, isIndexableRowConsistent, isTableLocked, reopen, setEstimatedRowCount, setLockingPolicy, test_errors
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.apache.derby.iapi.store.access.ConglomerateController
checkConsistency, debugConglomerate, getSpaceInfo
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Field Detail
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scratch_template
transient DataValueDescriptor[] scratch_template
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get_insert_row_lock
boolean get_insert_row_lock
Whether to get lock on the row being inserted, usually this lock has already been gotten when the row was inserted into the base table.
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NO_MATCH
private static final int NO_MATCH
- See Also:
- Constant Field Values
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MATCH_FOUND
private static final int MATCH_FOUND
- See Also:
- Constant Field Values
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RESCAN_REQUIRED
private static final int RESCAN_REQUIRED
- See Also:
- Constant Field Values
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Method Detail
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reclaim_deleted_rows
private boolean reclaim_deleted_rows(OpenBTree open_btree, long pageno) throws StandardException
Attempt to reclaim committed deleted rows from the page.Get exclusive latch on page, and then loop backward through page searching for deleted rows which are committed. The routine assumes that it is called from a transaction which cannot have deleted any rows on the page. For each deleted row on the page it attempts to get an exclusive lock on the deleted row, NOWAIT. If it succeeds, and since this row did not delete the row then the row must have been deleted by a transaction which has committed, so it is safe to purge the row. It then purges the row from the page.
Note that this routine may remove all rows from the page, it will not attempt a merge in this situation. This is because this routine is called from split which is attempting an insert on the given page, so it would be a waste to merge the page only to split it again to allow the insert of the row causing the split.
- Parameters:
open_btree
- The already open btree to use to get latch on page.pageno
- The page number of the leaf to attempt the reclaim on.- Returns:
- true if at least one row was purged. If true, then the routine will leave the page latched, and the caller will release the latch by committing or aborting the transaction. The latch must be held to end transaction to insure space on the page remains available for a undo of the purge.
- Throws:
StandardException
- Standard exception policy.
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start_xact_and_dosplit
private long start_xact_and_dosplit(boolean attempt_to_reclaim_deleted_rows, long leaf_pageno, DataValueDescriptor[] scratch_template, DataValueDescriptor[] rowToInsert, int flag) throws StandardException
Start an internal transaction and do the split.This routine starts a new transaction, and handles any errors that may come during the transaction. This transation must not obtain any locks as they are likely to conflict with the current user transaction.
If attempt_to_reclaim_deleted_rows is true this routine will attempt to reclaim space on the leaf page input, by purging committed deleted rows from the leaf. If it succeeds in purging at least one row, then it will commit the internal transaction and return without actually performing a split.
- Parameters:
scratch_template
- A scratch template used to search a page.rowToInsert
- The row to insert, make sure during split to make room for this row.- Throws:
StandardException
- Standard exception policy.
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comparePreviousRecord
private int comparePreviousRecord(int slot, LeafControlRow leaf, DataValueDescriptor[] rows, DataValueDescriptor[] oldRows) throws StandardException
Compares the oldrow with the one at 'slot' or the one left to it. If the slot is first slot it will move to the left sibiling of the 'leaf' and will compare with the record from the last slot.- Parameters:
slot
- slot number to start withleaf
- LeafControlRow of the current pagerows
- DataValueDescriptot array to fill it with fetched values- Returns:
- 0 if no duplicate 1 if duplicate 2 if rescan required
- Throws:
StandardException
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compareNextRecord
private int compareNextRecord(int slot, LeafControlRow leaf, DataValueDescriptor[] rows, DataValueDescriptor[] oldRows) throws StandardException
Compares the new record with the one at slot or the one right to it. If the slot is last slot in the page it will move to the right to sibling of the leaf and will compare with the record from the last slot.- Parameters:
slot
- slot number to start withleaf
- LeafControlRow of the current pagerows
- DataValueDescriptot array to fill it with fetched values- Returns:
- 0 if no duplicate 1 if duplicate 2 if rescan required
- Throws:
StandardException
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compareRowsForInsert
private int compareRowsForInsert(DataValueDescriptor[] originalRow, DataValueDescriptor[] newRow, LeafControlRow leaf, int slot) throws StandardException
Compares two rows for insert. If the two rows are not equal,NO_MATCH
is returned. Otherwise, it tries to get a lock on the row in the tree. If the lock is obtained without waiting,MATCH_FOUND
is returned (even if the row has been deleted). Otherwise,RESCAN_REQUIRED
is returned to indicate that the latches have been released and the B-tree must be rescanned. IfMATCH_FOUND
is returned, the caller should check whether the row has been deleted. If so, it may have to move to check the adjacent rows to be sure that there is no non-deleted duplicate row. IfMATCH_FOUND
orRESCAN_REQUIRED
is returned, the transaction will hold an update lock on the specified record when the method returns. Note! This method should only be called when the index is almost unique (that is, a non-unique index backing a unique constraint).- Parameters:
originalRow
- row from the treenewRow
- row to be insertedleaf
- leaf where originalRow residesslot
- slot where originalRow- Returns:
NO_MATCH
if no duplicate is found,MATCH_FOUND
if a duplicate is found, orRESCAN_REQUIRED
if the B-tree must be rescanned- Throws:
StandardException
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compareLeftAndRightSiblings
private int compareLeftAndRightSiblings(DataValueDescriptor[] rowToInsert, int insert_slot, LeafControlRow targetleaf) throws StandardException
Compares immidiate left and right records to check for duplicates. This methods compares new record (being inserted) with the record in immidate left and right postion to see if its duplicate (only for almost unique index and for non null keys)- Parameters:
rowToInsert
- row being insertedinsert_slot
- slot where rowToInsert is being insertedtargetleaf
- page where rowToInsert- Returns:
- 0 if no duplicate 1 if duplicate 2 if rescan required
- Throws:
StandardException
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doIns
private int doIns(DataValueDescriptor[] rowToInsert) throws StandardException
Insert a row into the conglomerate.- Parameters:
rowToInsert
- The row to insert into the conglomerate. The stored representations of the row's columns are copied into a new row somewhere in the conglomerate.- Returns:
- Returns 0 if insert succeeded. Returns ConglomerateController.ROWISDUPLICATE if conglomerate supports uniqueness checks and has been created to disallow duplicates, and the row inserted had key columns which were duplicate of a row already in the table. Other insert failures will raise StandardException's.
- Throws:
StandardException
- Standard exception policy.
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do_load_insert
private boolean do_load_insert(DataValueDescriptor[] rowToInsert, LeafControlRow leaf, int insert_slot) throws StandardException
Just insert the row on the current page/slot if it fits.- Throws:
StandardException
- Standard exception policy.
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do_load_split
private LeafControlRow do_load_split(DataValueDescriptor[] rowToInsert, LeafControlRow leaf) throws StandardException
Create room to insert a row to the right of the largest key in table.Perform a split pass on the tree which will move the largest key in leaf right to a new leaf, splitting parent branch pages as necessary.
- Throws:
StandardException
- Standard exception policy.
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init
public void init(TransactionManager xact_manager, boolean hold, ContainerHandle container, Transaction rawtran, int open_mode, int lock_level, BTreeLockingPolicy btree_locking_policy, BTree conglomerate, LogicalUndo undo, StaticCompiledOpenConglomInfo static_info, DynamicCompiledOpenConglomInfo dynamic_info) throws StandardException
Initialize the controller for use.Any changes to this method will probably have to be reflected in close as well.
Currently delegates to OpenBTree. If the btree controller ends up not having any state of its own, we can remove this method (the VM will dispatch to OpenBTree), gaining some small efficiency. For now, this method remains for clarity.
- Throws:
StandardException
- Standard exception policy.
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close
public void close() throws StandardException
Close the conglomerate controller.Any changes to this method will probably have to be reflected in close as well.
Currently delegates to OpenBTree. If the btree controller ends up not having any state of its own, we can remove this method (the VM will dispatch to OpenBTree), gaining some small efficiency. For now, this method remains for clarity.
- Specified by:
close
in interfaceConglomerateController
- Overrides:
close
in classOpenBTree
- Throws:
StandardException
- Standard exception policy.- See Also:
ConglomerateController.close()
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closeForEndTransaction
public boolean closeForEndTransaction(boolean closeHeldScan) throws StandardException
Close conglomerate controller as part of terminating a transaction.Use this call to close the conglomerate controller resources as part of committing or aborting a transaction. The normal close() routine may do some cleanup that is either unnecessary, or not correct due to the unknown condition of the controller following a transaction ending error. Use this call when closing all controllers as part of an abort of a transaction.
This call is meant to only be used internally by the Storage system, clients of the storage system should use the simple close() interface.
RESOLVE (mikem) - move this call to ConglomerateManager so it is obvious that non-access clients should not call this.
- Specified by:
closeForEndTransaction
in interfaceConglomerateController
- Parameters:
closeHeldScan
- If true, means to close controller even if it has been opened to be kept opened across commit. This is used to close these controllers on abort.- Returns:
- boolean indicating that the close has resulted in a real close of the controller. A held scan will return false if called by closeForEndTransaction(false), otherwise it will return true. A non-held scan will always return true.
- Throws:
StandardException
- Standard exception policy.
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insert
public int insert(DataValueDescriptor[] row) throws StandardException
Insert a row into the conglomerate.- Specified by:
insert
in interfaceConglomerateController
- Parameters:
row
- The row to insert into the conglomerate. The stored representations of the row's columns are copied into a new row somewhere in the conglomerate.- Returns:
- Returns 0 if insert succeeded. Returns ConglomerateController.ROWISDUPLICATE if conglomerate supports uniqueness checks and has been created to disallow duplicates, and the row inserted had key columns which were duplicate of a row already in the table. Other insert failures will raise StandardException's.
- Throws:
StandardException
- Standard exception policy.- See Also:
ConglomerateController.insert(org.apache.derby.iapi.types.DataValueDescriptor[])
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isKeyed
public boolean isKeyed()
Return whether this is a keyed conglomerate.All b-trees are keyed.
- Specified by:
isKeyed
in interfaceConglomerateController
- See Also:
ConglomerateController.isKeyed()
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getTableProperties
public void getTableProperties(java.util.Properties prop) throws StandardException
Request the system properties associated with a table.Request the value of properties that are associated with a table. The following properties can be requested: derby.storage.pageSize derby.storage.pageReservedSpace derby.storage.minimumRecordSize derby.storage.initialPages
To get the value of a particular property add it to the property list, and on return the value of the property will be set to it's current value. For example: get_prop(ConglomerateController cc) { Properties prop = new Properties(); prop.put("derby.storage.pageSize", ""); cc.getTableProperties(prop); System.out.println( "table's page size = " + prop.getProperty("derby.storage.pageSize"); }
- Specified by:
getTableProperties
in interfaceConglomPropertyQueryable
- Parameters:
prop
- Property list to fill in.- Throws:
StandardException
- Standard exception policy.
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getInternalTablePropertySet
public java.util.Properties getInternalTablePropertySet(java.util.Properties prop) throws StandardException
Request set of properties associated with a table.Returns a property object containing all properties that the store knows about, which are stored persistently by the store. This set of properties may vary from implementation to implementation of the store.
This call is meant to be used only for internal query of the properties by jbms, for instance by language during bulk insert so that it can create a new conglomerate which exactly matches the properties that the original container was created with. This call should not be used by the user interface to present properties to users as it may contain properties that are meant to be internal to jbms. Some properties are meant only to be specified by jbms code and not by users on the command line.
Note that not all properties passed into createConglomerate() are stored persistently, and that set may vary by store implementation.
- Specified by:
getInternalTablePropertySet
in interfaceConglomPropertyQueryable
- Parameters:
prop
- Property list to add properties to. If null, routine will create a new Properties object, fill it in and return it.- Throws:
StandardException
- Standard exception policy.
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load
public long load(TransactionManager xact_manager, boolean createConglom, RowLocationRetRowSource rowSource) throws StandardException
Load rows from rowSource into the opened btree.Efficiently load rows into the already opened btree. The btree must be table locked, as no row locks will be requested by this routine. On exit from this routine the conglomerate will be closed (on both error or success).
This routine does an almost bottom up build of a btree. It assumes all rows arrive in sorted order, and inserts them directly into the next (to the right) spot in the current leaf until there is no space. Then it calls the generic split code to add the next leaf (RESOLVE - in the future we could optimize this to split bottom up rather than top down for create index).
- Throws:
StandardException
- Standard exception policy. If conglomerate supports uniqueness checks and has been created to disallow duplicates, and one of the rows being loaded had key columns which were duplicate of a row already in the conglomerate, then raise SQLState.STORE_CONGLOMERATE_DUPLICATE_KEY_EXCEPTION.- See Also:
Conglomerate.load(org.apache.derby.iapi.store.access.conglomerate.TransactionManager, boolean, org.apache.derby.iapi.store.access.RowLocationRetRowSource)
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delete
public boolean delete(RowLocation loc) throws StandardException
Delete a row from the conglomerate.- Specified by:
delete
in interfaceConglomerateController
- Returns:
- Returns true if delete was successful, false if the record pointed at no longer represents a valid record.
- Throws:
StandardException
- Standard exception policy.- See Also:
ConglomerateController.delete(org.apache.derby.iapi.types.RowLocation)
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fetch
public boolean fetch(RowLocation loc, DataValueDescriptor[] row, FormatableBitSet validColumns) throws StandardException
Fetch the row at the given location.- Specified by:
fetch
in interfaceConglomerateController
- Parameters:
loc
- The "RowLocation" which describes the exact row to fetch from the table.row
- The row to read the data into.validColumns
- A description of which columns to return from row on the page into "destRow." destRow and validColumns work together to describe the row to be returned by the fetch - see RowUtil for description of how these three parameters work together to describe a fetched "row".- Returns:
- Returns true if fetch was successful, false if the record pointed at no longer represents a valid record.
- Throws:
StandardException
- Standard exception policy.- See Also:
ConglomerateController.fetch(org.apache.derby.iapi.types.RowLocation, org.apache.derby.iapi.types.DataValueDescriptor[], org.apache.derby.iapi.services.io.FormatableBitSet)
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fetch
public boolean fetch(RowLocation loc, DataValueDescriptor[] row, FormatableBitSet validColumns, boolean waitForLock) throws StandardException
Fetch the row at the given location.- Specified by:
fetch
in interfaceConglomerateController
- Parameters:
loc
- The "RowLocation" which describes the exact row to fetch from the table.row
- The row to read the data into.validColumns
- A description of which columns to return from row on the page into "destRow." destRow and validColumns work together to describe the row to be returned by the fetch - see RowUtil for description of how these three parameters work together to describe a fetched "row".waitForLock
- If false, then the call will throw a lock timeout exception immediately, if the lock can not be granted without waiting. If true call will act exactly as fetch() interface with no waitForLock parameter.- Returns:
- Returns true if fetch was successful, false if the record pointed at no longer represents a valid record.
- Throws:
StandardException
- Standard exception policy.- See Also:
ConglomerateController.fetch(org.apache.derby.iapi.types.RowLocation, org.apache.derby.iapi.types.DataValueDescriptor[], org.apache.derby.iapi.services.io.FormatableBitSet)
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insertAndFetchLocation
public void insertAndFetchLocation(DataValueDescriptor[] row, RowLocation templateRowLocation) throws StandardException
Insert a row into the conglomerate, and store its location in the provided template row location. Unimplemented by btree.- Specified by:
insertAndFetchLocation
in interfaceConglomerateController
- Parameters:
row
- The row to insert into the conglomerate. The stored representations of the row's columns are copied into a new row somewhere in the conglomerate.templateRowLocation
- The rowlocation to read the inserted row location into.- Throws:
StandardException
- Standard exception policy.- See Also:
ConglomerateController.insertAndFetchLocation(org.apache.derby.iapi.types.DataValueDescriptor[], org.apache.derby.iapi.types.RowLocation)
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newRowLocationTemplate
public RowLocation newRowLocationTemplate() throws StandardException
Return a row location object of the correct type to be used in calls to insertAndFetchLocation.- Specified by:
newRowLocationTemplate
in interfaceConglomerateController
- Throws:
StandardException
- Standard exception policy.- See Also:
ConglomerateController.newRowLocationTemplate()
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lockRow
public boolean lockRow(RowLocation loc, int lock_operation, boolean wait, int lock_duration) throws StandardException
Lock the given row location.Should only be called by access.
This call can be made on a ConglomerateController that was opened for locking only.
RESOLVE (mikem) - move this call to ConglomerateManager so it is obvious that non-access clients should not call this.
- Specified by:
lockRow
in interfaceConglomerateController
- Parameters:
loc
- The "RowLocation" which describes the exact row to lock.wait
- Should the lock call wait to be granted?lock_operation
- For what operation are we requesting the lock, this should be one of the following 4 options: LOCK_READ [read lock], (LOCK_INS | LOCK_UPD) [ lock for insert], (LOCK_INSERT_PREVKEY | LOCK_UPD) [lock for previous key to insert], (LOCK_UPD) [lock for delete or replace] (LOCK_UPD | LOCK_UPDATE_LOCKS) [lock scan for update, will upgrade lock later if actual update is take place]lock_duration
- If set to TransactionManager.LOCK_INSTANT_DURATION, then lock will be released immediately after being granted.- Returns:
- true if lock was granted, only can be false if wait was false.
- Throws:
StandardException
- Standard exception policy.
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lockRow
public boolean lockRow(long page_num, int record_id, int lock_operation, boolean wait, int lock_duration) throws StandardException
Description copied from interface:ConglomerateController
Lock the given record id/page num pair.Should only be called by access, to lock "special" locks formed from the Recordhandle.* reserved constants for page specific locks.
This call can be made on a ConglomerateController that was opened for locking only.
RESOLVE (mikem) - move this call to ConglomerateManager so it is obvious that non-access clients should not call this.
- Specified by:
lockRow
in interfaceConglomerateController
- Parameters:
page_num
- page number of record to lock.record_id
- record id of record to lock.lock_operation
- For what operation are we requesting the lock, this should be one of the following 4 options: LOCK_READ [read lock], (LOCK_INS | LOCK_UPD) [ lock for insert], (LOCK_INSERT_PREVKEY | LOCK_UPD) [lock for previous key to insert], (LOCK_UPD) [lock for delete or replace] (LOCK_UPD | LOCK_UPDATE_LOCKS) [lock scan for update, will upgrade lock later if actual update is take place]wait
- Should the lock call wait to be granted?lock_duration
- If set to TransactionManager.LOCK_INSTANT_DURATION, then lock will be released immediately after being granted.- Returns:
- true if lock was granted, only can be false if wait was false.
- Throws:
StandardException
- Standard exception policy.
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unlockRowAfterRead
public void unlockRowAfterRead(RowLocation loc, boolean forUpdate, boolean row_qualifies) throws StandardException
Description copied from interface:ConglomerateController
UnLock the given row location.Should only be called by access.
This call can be made on a ConglomerateController that was opened for locking only.
RESOLVE (mikem) - move this call to ConglomerateManager so it is obvious that non-access clients should not call this.
- Specified by:
unlockRowAfterRead
in interfaceConglomerateController
- Parameters:
loc
- The "RowLocation" which describes the row to unlock.forUpdate
- Row was locked for read or update.row_qualifies
- Row was qualified and returned to the user.- Throws:
StandardException
- Standard exception policy.
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replace
public boolean replace(RowLocation loc, DataValueDescriptor[] row, FormatableBitSet validColumns) throws StandardException
Replace the entire row at the given location.- Specified by:
replace
in interfaceConglomerateController
- Returns:
- true if update was successful, returns false if the update fails because the record pointed at no longer represents a valid record.
- Throws:
StandardException
- Standard exception policy.- See Also:
ConglomerateController.replace(org.apache.derby.iapi.types.RowLocation, org.apache.derby.iapi.types.DataValueDescriptor[], org.apache.derby.iapi.services.io.FormatableBitSet)
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