package org.hsqldb.persist;
import java.io.IOException;
import org.hsqldb.HsqlException;
import org.hsqldb.Row;
import org.hsqldb.RowAVL;
import org.hsqldb.RowAVLDisk;
import org.hsqldb.RowAVLDiskLarge;
import org.hsqldb.RowAction;
import org.hsqldb.RowActionBase;
import org.hsqldb.Session;
import org.hsqldb.Table;
import org.hsqldb.TransactionManager;
import org.hsqldb.error.Error;
import org.hsqldb.error.ErrorCode;
import org.hsqldb.index.Index;
import org.hsqldb.index.NodeAVL;
import org.hsqldb.index.NodeAVLDisk;
import org.hsqldb.lib.ArrayUtil;
import org.hsqldb.lib.DoubleIntIndex;
import org.hsqldb.lib.LongKeyHashMap;
import org.hsqldb.lib.LongLookup;
import org.hsqldb.navigator.RowIterator;
import org.hsqldb.rowio.RowInputInterface;
import org.hsqldb.rowio.RowOutputInterface;
public class RowStoreAVLDisk extends RowStoreAVL {
DataFileCache cache;
RowOutputInterface rowOut;
boolean largeData;
public RowStoreAVLDisk(DataFileCache cache, Table table) {
this(table);
this.cache = cache;
rowOut = cache.rowOut.duplicate();
cache.adjustStoreCount(1);
rowActionMap = new LongKeyHashMap(8);
largeData = database.logger.propLargeData;
tableSpace = cache.spaceManager.getTableSpace(table.getSpaceID());
readLock = rowActionMap.getReadLock();
writeLock = rowActionMap.getWriteLock();
}
protected RowStoreAVLDisk(Table table) {
this.database = table.database;
this.table = table;
this.indexList = table.getIndexList();
this.accessorList = new CachedObject[indexList.length];
largeData = database.logger.getDataFileFactor() > 1;
}
public boolean isMemory() {
return false;
}
public void set(CachedObject object) {
if (database.txManager.isMVRows()) {
RowAction rowact = (RowAction) rowActionMap.get(object.getPos());
((Row) object).rowAction = rowact;
}
}
public CachedObject get(long key) {
CachedObject object = cache.get(key, this, false);
return object;
}
public CachedObject get(long key, boolean keep) {
CachedObject object = cache.get(key, this, keep);
return object;
}
public CachedObject get(CachedObject object, boolean keep) {
object = cache.get(object, this, keep);
return object;
}
public void add(Session session, CachedObject object, boolean tx) {
int size = object.getRealSize(rowOut);
size += indexList.length * NodeAVLDisk.SIZE_IN_BYTE;
size = rowOut.getStorageSize(size);
object.setStorageSize(size);
long pos = tableSpace.getFilePosition(size, false);
object.setPos(pos);
if (tx) {
RowAction.addInsertAction(session, table, (Row) object);
if (database.txManager.isMVRows()) {
rowActionMap.put(object.getPos(), ((Row) object).rowAction);
}
}
cache.add(object, false);
storageSize += size;
}
public boolean canRead(Session session, long pos, int mode, int[] colMap) {
if (database.txManager.isMVRows()) {
RowAction action = (RowAction) rowActionMap.get(pos);
if (action == null) {
return true;
}
return action.canRead(session, mode);
}
return true;
}
public boolean canRead(Session session, CachedObject object, int mode,
int[] colMap) {
RowAction action = ((Row) object).rowAction;
if (action == null) {
return true;
}
return action.canRead(session, mode);
}
public CachedObject get(RowInputInterface in) {
try {
if (largeData) {
return new RowAVLDiskLarge(this, in);
} else {
return new RowAVLDisk(this, in);
}
} catch (IOException e) {
throw Error.error(ErrorCode.DATA_FILE_ERROR, e);
}
}
public CachedObject getNewCachedObject(Session session, Object object,
boolean tx) {
Row row;
if (largeData) {
row = new RowAVLDiskLarge(table, (Object[]) object, this);
} else {
row = new RowAVLDisk(table, (Object[]) object, this);
}
add(session, row, tx);
return row;
}
public void indexRow(Session session, Row row) {
writeLock();
try {
row = (Row) get(row, true);
super.indexRow(session, row);
} finally {
row.keepInMemory(false);
writeUnlock();
}
}
public void removeAll() {
elementCount.set(0);
cache.spaceManager.freeTableSpace(tableSpace.getSpaceID());
ArrayUtil.fillArray(accessorList, null);
}
public void remove(CachedObject object) {
cache.remove(object);
tableSpace.release(object.getPos(), object.getStorageSize());
storageSize -= object.getStorageSize();
}
public void commitPersistence(CachedObject row) {}
public void postCommitAction(Session session, RowAction action) {
if (action.getType() == RowAction.ACTION_NONE) {
writeLock();
try {
if (action.getType() == RowActionBase.ACTION_NONE) {
rowActionMap.remove(action.getPos());
}
} finally {
writeUnlock();
}
} else if (action.getType() == RowAction.ACTION_DELETE_FINAL
&& !action.isDeleteComplete()) {
action.setDeleteComplete();
Row row = action.getRow();
if (row == null) {
row = (Row) get(action.getPos(), false);
}
delete(session, row);
rowActionMap.remove(row.getPos());
remove(row);
}
}
public void commitRow(Session session, Row row, int changeAction,
int txModel) {
Object[] data = row.getData();
switch (changeAction) {
case RowAction.ACTION_DELETE :
database.logger.writeDeleteStatement(session, (Table) table,
data);
if (txModel == TransactionManager.LOCKS) {
remove(row);
}
break;
case RowAction.ACTION_INSERT :
database.logger.writeInsertStatement(session, row,
(Table) table);
break;
case RowAction.ACTION_INSERT_DELETE :
if (txModel == TransactionManager.LOCKS) {
remove(row);
}
break;
case RowAction.ACTION_DELETE_FINAL :
delete(session, row);
if (database.txManager.isMVRows()) {
rowActionMap.remove(row.getPos());
}
remove(row);
break;
}
}
public void rollbackRow(Session session, Row row, int changeAction,
int txModel) {
switch (changeAction) {
case RowAction.ACTION_DELETE :
if (txModel == TransactionManager.LOCKS) {
row = (Row) get(row, true);
((RowAVL) row).setNewNodes(this);
row.keepInMemory(false);
indexRow(session, row);
} else {
RowAction ra = row.getAction();
if (ra.getType() == RowAction.ACTION_NONE) {
rowActionMap.remove(row.getPos());
}
}
break;
case RowAction.ACTION_INSERT :
delete(session, row);
if (database.txManager.isMVRows()) {
rowActionMap.remove(row.getPos());
}
remove(row);
break;
case RowAction.ACTION_INSERT_DELETE :
if (txModel == TransactionManager.LOCKS) {
remove(row);
} else {
delete(session, row);
rowActionMap.remove(row.getPos());
remove(row);
}
break;
}
}
public RowAction addDeleteActionToRow(Session session, Row row,
int[] colMap, boolean isMV) {
RowAction action = null;
if (!isMV) {
synchronized (row) {
return RowAction.addDeleteAction(session, table, row, colMap);
}
}
writeLock();
try {
action = (RowAction) rowActionMap.get(row.getPos());
if (action == null) {
action = RowAction.addDeleteAction(session, table, row,
colMap);
if (action != null) {
rowActionMap.put(action.getPos(), action);
}
} else {
row.rowAction = action;
action = RowAction.addDeleteAction(session, table, row,
colMap);
}
} finally {
writeUnlock();
}
return action;
}
public DataFileCache getCache() {
return cache;
}
public void setCache(DataFileCache cache) {
throw Error.runtimeError(ErrorCode.U_S0500, "RowStoreAVLDisk");
}
public void release() {
cache.adjustStoreCount(-1);
cache = null;
elementCount.set(0);
ArrayUtil.fillArray(accessorList, null);
}
public CachedObject getAccessor(Index key) {
int position = key.getPosition();
if (position >= accessorList.length) {
throw Error.runtimeError(ErrorCode.U_S0500, "RowStoreAVL");
}
NodeAVL node = (NodeAVL) accessorList[position];
if (node == null) {
return null;
}
RowAVL row = (RowAVL) get(node.getRow(this), false);
node = row.getNode(key.getPosition());
accessorList[key.getPosition()] = node;
return node;
}
public void setAccessor(Index key, long accessor) {
CachedObject object = get(accessor, false);
if (object != null) {
NodeAVL node = ((RowAVL) object).getNode(key.getPosition());
object = node;
}
setAccessor(key, object);
}
public void resetAccessorKeys(Session session, Index[] keys) {
if (indexList.length == 0 || accessorList[0] == null) {
indexList = keys;
accessorList = new CachedObject[indexList.length];
return;
}
throw Error.runtimeError(ErrorCode.U_S0500, "RowStoreAVLDisk");
}
public void setReadOnly(boolean readOnly) {}
public void moveDataToSpace(Session session) {
Table table = (Table) this.table;
long rowCount = elementCount();
if (rowCount == 0) {
return;
}
if (rowCount > Integer.MAX_VALUE) {
return;
}
DoubleIntIndex pointerLookup = new DoubleIntIndex((int) rowCount);
writeLock();
try {
moveDataToSpace(cache, pointerLookup);
CachedObject[] newAccessorList =
new CachedObject[accessorList.length];
for (int i = 0; i < accessorList.length; i++) {
long pos = pointerLookup.lookup(accessorList[i].getPos());
newAccessorList[i] = cache.get(pos, this, false);
}
RowIterator it = rowIterator();
while (it.next()) {
Row row = it.getCurrentRow();
cache.remove(row);
tableSpace.release(row.getPos(), row.getStorageSize());
}
accessorList = newAccessorList;
} finally {
writeUnlock();
}
database.logger.logDetailEvent("table written "
+ table.getName().name);
}
public void moveDataToSpace(DataFileCache targetCache,
LongLookup pointerLookup) {
int spaceId = table.getSpaceID();
TableSpaceManager targetSpace =
targetCache.spaceManager.getTableSpace(spaceId);
RowIterator it = indexList[0].firstRow(this);
while (it.next()) {
CachedObject row = it.getCurrentRow();
pointerLookup.addUnsorted(row.getPos(), row.getStorageSize());
}
pointerLookup.sort();
for (int i = 0; i < pointerLookup.size(); i++) {
long newPos = targetSpace.getFilePosition(
(int) pointerLookup.getLongValue(i), false);
pointerLookup.setLongValue(i, newPos);
}
it = indexList[0].firstRow(this);
while (it.next()) {
CachedObject row = it.getCurrentRow();
long newPos = pointerLookup.lookup(row.getPos());
targetCache.rowOut.reset();
row.write(targetCache.rowOut, pointerLookup);
targetCache.saveRowOutput(newPos);
}
}
long getStorageSizeEstimate() {
if (elementCount.get() == 0) {
return 0;
}
CachedObject accessor = getAccessor(indexList[0]);
CachedObject row = get(accessor.getPos());
return row.getStorageSize() * elementCount.get();
}
public void readLock() {
readLock.lock();
}
public void readUnlock() {
readLock.unlock();
}
public void writeLock() {
writeLock.lock();
}
public void writeUnlock() {
writeLock.unlock();
}
}