本文整理匯總了Java中com.sleepycat.je.Cursor.getNext方法的典型用法代碼示例。如果您正苦於以下問題:Java Cursor.getNext方法的具體用法?Java Cursor.getNext怎麽用?Java Cursor.getNext使用的例子?那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類com.sleepycat.je.Cursor
的用法示例。
在下文中一共展示了Cursor.getNext方法的15個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的Java代碼示例。
示例1: copyLiveObjects
import com.sleepycat.je.Cursor; //導入方法依賴的package包/類
public void copyLiveObjects(final long deadTime, final Generation next, final List<Long> deletes) {
s_logger.debug("Copying objects from {} to {}", this, next);
final DatabaseEntry identifier = new DatabaseEntry();
final DatabaseEntry target = new DatabaseEntry();
final DatabaseEntry accessed = new DatabaseEntry();
final Cursor cursor = _id2LastAccessed.openCursor(null, null);
int count = 0;
while (cursor.getNext(identifier, accessed, LockMode.READ_UNCOMMITTED) == OperationStatus.SUCCESS) {
final long lastAccess = LongBinding.entryToLong(accessed);
if (lastAccess - deadTime > 0) {
if (_id2Target.get(null, identifier, target, LockMode.READ_UNCOMMITTED) == OperationStatus.SUCCESS) {
next._id2Target.put(null, identifier, target);
next._target2Id.put(null, target, identifier);
next._id2LastAccessed.put(null, identifier, accessed);
count++;
} else {
deletes.add(LongBinding.entryToLong(identifier));
}
} else {
deletes.add(LongBinding.entryToLong(identifier));
}
}
cursor.close();
s_logger.info("Copied {} objects from {} to {}", new Object[] {count, this, next });
}
示例2: readData
import com.sleepycat.je.Cursor; //導入方法依賴的package包/類
public void readData(int limit)
{
Cursor cursor = scaffoldDatabase.openCursor(null, null);
DatabaseEntry key = new DatabaseEntry();
DatabaseEntry data = new DatabaseEntry();
int i = 0;
while(cursor.getNext(key, data, LockMode.DEFAULT) == OperationStatus.SUCCESS)
{
if(i >= limit)
break;
String keyString = new String(key.getData());
System.out.println("hash: " + keyString);
i++;
}
cursor.close();
}
示例3: getGroundhogStatistics
import com.sleepycat.je.Cursor; //導入方法依賴的package包/類
public GroundhogStatistics getGroundhogStatistics() {
GroundhogStatistics wholeGroundhogStatistics = new GroundhogStatistics();
try {
Cursor myCursor = conceptToConceptVectorIndexStore.openCursor(null, null);
DatabaseEntry foundKey = new DatabaseEntry();
DatabaseEntry foundData = new DatabaseEntry();
while (myCursor.getNext(foundKey, foundData, LockMode.DEFAULT) == OperationStatus.SUCCESS) {
ConceptToConceptVectorRecordIndexEntry entry = (ConceptToConceptVectorRecordIndexEntry) myDataBinding.entryToObject(foundData);
Integer key = (Integer) myIntegerBinding.entryToObject(foundKey);
ConceptStatistic conceptStatistic = new ConceptStatistic();
conceptStatistic.docFrequency = entry.conceptVectorRecordIDs.size();
conceptStatistic.termFrequency = Math.round(entry.sumOfValuesInRecords);
// RvS: fix compile error by rounding off float to int
wholeGroundhogStatistics.conceptStatistics.put(key, conceptStatistic);
wholeGroundhogStatistics.allConceptOccurrences += entry.sumOfValuesInRecords;
}
myCursor.close();
} catch (DatabaseException e) {
e.printStackTrace();
}
return wholeGroundhogStatistics;
}
示例4: getGroundhogStatistics
import com.sleepycat.je.Cursor; //導入方法依賴的package包/類
public GroundhogStatistics getGroundhogStatistics() {
GroundhogStatistics wholeGroundhogStatistics = new GroundhogStatistics();
try {
Cursor myCursor = conceptToConceptVectorIndexStore.openCursor(null, null);
DatabaseEntry foundKey = new DatabaseEntry();
DatabaseEntry foundData = new DatabaseEntry();
while (myCursor.getNext(foundKey, foundData, LockMode.DEFAULT) == OperationStatus.SUCCESS) {
ConceptToConceptVectorRecordIndexEntry entry = (ConceptToConceptVectorRecordIndexEntry) myDataBinding.entryToObject(foundData);
Integer key = (Integer) myIntegerBinding.entryToObject(foundKey);
ConceptStatistic conceptStatistic = new ConceptStatistic();
conceptStatistic.docFrequency = entry.conceptVectorRecordIDs.size();
conceptStatistic.termFrequency = entry.sumOfValuesInRecords.intValue();
wholeGroundhogStatistics.conceptStatistics.put(key, conceptStatistic);
wholeGroundhogStatistics.allConceptOccurrences += entry.sumOfValuesInRecords;
}
myCursor.close();
} catch (DatabaseException e) {
e.printStackTrace();
}
return wholeGroundhogStatistics;
}
示例5: privateLoadAllKeys
import com.sleepycat.je.Cursor; //導入方法依賴的package包/類
private Set privateLoadAllKeys() {
Set keys = new java.util.HashSet((int) _db.count());
Cursor cursor = null;
try {
cursor = _db.openCursor(null, null);
DatabaseEntry foundKey = new DatabaseEntry();
DatabaseEntry foundData = new DatabaseEntry();
while (cursor.getNext(foundKey, foundData, LockMode.DEFAULT) == OperationStatus.SUCCESS) {
keys.add((K) entryToObject(foundKey));
}
} catch (Exception e) {
_logger.log(Level.SEVERE, e.getMessage(), e);
} finally {
cursor.close();
}
_logger.log(Level.INFO, this.getClass().getCanonicalName() + ":" + _mapName + ":loadAllKeys:" + keys.size());
return keys;
}
示例6: preload
import com.sleepycat.je.Cursor; //導入方法依賴的package包/類
private static void preload(Environment env, String dbName)
throws DatabaseException {
System.out.println("Preload starting");
Database db = env.openDatabase(null, dbName, null);
Cursor cursor = db.openCursor(null, null);
try {
DatabaseEntry key = new DatabaseEntry();
DatabaseEntry data = new DatabaseEntry();
int count = 0;
while (cursor.getNext(key, data, LockMode.DEFAULT) ==
OperationStatus.SUCCESS) {
count++;
if ((count % 50000) == 0) {
System.out.println(count + "...");
}
}
System.out.println("Preloaded " + count + " records");
} finally {
cursor.close();
db.close();
}
}
示例7: showAllInventory
import com.sleepycat.je.Cursor; //導入方法依賴的package包/類
private void showAllInventory()
throws DatabaseException {
// Get a cursor
Cursor cursor = myDbEnv.getInventoryDB().openCursor(null, null);
// DatabaseEntry objects used for reading records
DatabaseEntry foundKey = new DatabaseEntry();
DatabaseEntry foundData = new DatabaseEntry();
try { // always want to make sure the cursor gets closed
while (cursor.getNext(foundKey, foundData,
LockMode.DEFAULT) == OperationStatus.SUCCESS) {
Inventory theInventory =
(Inventory)inventoryBinding.entryToObject(foundData);
displayInventoryRecord(foundKey, theInventory);
}
} catch (Exception e) {
System.err.println("Error on inventory cursor:");
System.err.println(e.toString());
e.printStackTrace();
} finally {
cursor.close();
}
}
示例8: testReadLocks
import com.sleepycat.je.Cursor; //導入方法依賴的package包/類
/**
* Insert and then scan some records. Measure memory usage at different
* points in this sequence, asserting that the memory usage count is
* properly decremented.
*/
public void testReadLocks()
throws DatabaseException {
loadData();
/*
* Now scan the database. Make sure all locking overhead is
* released.
*/
for (int t = 0; t < numTxns; t++) {
Cursor c = db.openCursor(txns[t], null);
while (c.getNext(keyEntry, dataEntry, null) ==
OperationStatus.SUCCESS) {
}
c.close();
}
afterAction = mb.getCacheMemoryUsage();
closeTxns(false);
}
示例9: dump
import com.sleepycat.je.Cursor; //導入方法依賴的package包/類
private void dump() {
try {
Cursor cursor = db.openCursor(null, null);
DatabaseEntry key = new DatabaseEntry();
DatabaseEntry data = new DatabaseEntry();
while (cursor.getNext(key, data, LockMode.DEFAULT) ==
OperationStatus.SUCCESS) {
System.out.println("<rec key=\"" +
IntegerBinding.entryToInt(key) +
"\" data=\"" +
IntegerBinding.entryToInt(data) +
"\"/>");
}
DbInternal.dbGetDatabaseImpl(db).getTree().dump();
cursor.close();
} catch (DatabaseException DBE) {
throw new RuntimeException(DBE);
}
}
示例10: dump
import com.sleepycat.je.Cursor; //導入方法依賴的package包/類
private void dump() {
try {
Cursor cursor = db.openCursor(null, null);
DatabaseEntry key = new DatabaseEntry();
DatabaseEntry data = new DatabaseEntry();
while (cursor.getNext(key, data, LockMode.DEFAULT) ==
OperationStatus.SUCCESS) {
System.out.println("<rec key=\"" +
IntegerBinding.entryToInt(key) +
"\" data=\"" +
IntegerBinding.entryToInt(data) +
"\"/>");
}
DbInternal.dbGetDatabaseImpl(db).getTree().dump();
cursor.close();
} catch (DatabaseException DBE) {
throw new RuntimeException(DBE);
}
}
示例11: get
import com.sleepycat.je.Cursor; //導入方法依賴的package包/類
/**
* 通過遊標查詢數據
* 當key為null或者""時,返回數據庫的所有記錄
* @param dbName
* @param key
* @return
* @throws Exception
*/
public List<BerkeleyBean> get(String dbName, String key) throws Exception {
List<BerkeleyBean> resultList = null;
Cursor cursor = null;
try {
// 每次取50條
int itemLimit = 50;
Database db = this.getDb(dbName);
cursor = db.openCursor(null, null);
resultList = new ArrayList<BerkeleyBean>(itemLimit);
byte keyData[] = null;
if (key != null && !"".equals(key.trim())) {
keyData = key.getBytes("utf-8");
}
DatabaseEntry foundKey = new DatabaseEntry(keyData);
DatabaseEntry foundData = new DatabaseEntry();
// 循環取得數據
BerkeleyBean bean = null;
String getKey = null;
byte data[] = null;
while (cursor.getNext(foundKey, foundData, LockMode.DEFAULT) == OperationStatus.SUCCESS) {
getKey = new String(foundKey.getData(), "utf-8");
data = foundData.getData();
bean = new BerkeleyBean();
bean.setKey(getKey);
bean.setValue(data);
resultList.add(bean);
if (itemLimit-- <= 0)
break;
}
} finally {
if (cursor != null) {
cursor.close();
}
}
return resultList;
}
示例12: gets
import com.sleepycat.je.Cursor; //導入方法依賴的package包/類
/**
* 獲取所有記錄
*
* @author ZhengWei(HY)
* @createDate 2016-02-17
* @version v1.0
*
* @return
*/
public Map<String ,String> gets()
{
Map<String ,String> v_Ret = new HashMap<String ,String>();
Cursor v_Cursor = null;
DatabaseEntry v_Key = new DatabaseEntry();
DatabaseEntry v_Value = new DatabaseEntry();
try
{
v_Cursor = this.database.openCursor(null ,null);
while ( v_Cursor.getNext(v_Key ,v_Value ,LockMode.DEFAULT) == OperationStatus.SUCCESS )
{
v_Ret.put(new String(v_Key.getData() ,this.dataEnCode) ,new String(v_Value.getData() ,this.dataEnCode));
}
}
catch (Exception exce)
{
exce.printStackTrace();
}
finally
{
closeCursor(v_Cursor);
}
return v_Ret;
}
示例13: getDBEntrys
import com.sleepycat.je.Cursor; //導入方法依賴的package包/類
public Map<String ,DatabaseEntry> getDBEntrys()
{
Map<String ,DatabaseEntry> v_Ret = new HashMap<String ,DatabaseEntry>();
Cursor v_Cursor = null;
DatabaseEntry v_Key = new DatabaseEntry();
DatabaseEntry v_Value = new DatabaseEntry();
try
{
v_Cursor = this.database.openCursor(null ,null);
while ( v_Cursor.getNext(v_Key ,v_Value ,LockMode.DEFAULT) == OperationStatus.SUCCESS )
{
v_Ret.put(new String(v_Key.getData() ,this.dataEnCode) ,v_Value);
}
}
catch (Exception exce)
{
exce.printStackTrace();
}
finally
{
closeCursor(v_Cursor);
}
return v_Ret;
}
示例14: testRemoveEmptyBIN
import com.sleepycat.je.Cursor; //導入方法依賴的package包/類
public void testRemoveEmptyBIN()
throws DatabaseException {
/* Non-transactional no-dups, 2 keys. */
openAndInit(false, false);
OperationStatus status;
/* Cursor appears on BIN. */
Cursor cursor = db.openCursor(null, null);
status = cursor.getFirst(keyFound, dataFound, null);
assertEquals(OperationStatus.SUCCESS, status);
checkBinEntriesAndCursors(bin, 2, 1);
/* Delete without closing the cursor does not compress. */
status = cursor.delete();
assertEquals(OperationStatus.SUCCESS, status);
status = cursor.getNext(keyFound, dataFound, null);
assertEquals(OperationStatus.SUCCESS, status);
status = cursor.delete();
assertEquals(OperationStatus.SUCCESS, status);
env.compress();
checkBinEntriesAndCursors(bin, 2, 1);
/* Closing the cursor without calling compress does not compress. */
cursor.close();
checkBinEntriesAndCursors(bin, 2, 0);
/* Finally compress can compress. */
env.compress();
checkBinEntriesAndCursors(bin, 0, 0);
/* BIN is empty so parent entry should be gone also. */
assertEquals(1, in.getNEntries());
closeEnv();
}
示例15: testRemoveEmptyDBIN
import com.sleepycat.je.Cursor; //導入方法依賴的package包/類
public void testRemoveEmptyDBIN()
throws DatabaseException {
/* Non-transactional dups, 2 keys and 2 dups for 1st key. */
openAndInit(false, true);
OperationStatus status;
/* Cursor appears on DBIN. */
Cursor cursor = db.openCursor(null, null);
status = cursor.getFirst(keyFound, dataFound, null);
assertEquals(OperationStatus.SUCCESS, status);
checkBinEntriesAndCursors(dbin, 2, 1);
/* Delete without closing the cursor does not compress. */
status = cursor.delete();
assertEquals(OperationStatus.SUCCESS, status);
status = cursor.getNext(keyFound, dataFound, null);
assertEquals(OperationStatus.SUCCESS, status);
status = cursor.delete();
assertEquals(OperationStatus.SUCCESS, status);
env.compress();
checkBinEntriesAndCursors(dbin, 2, 1);
/* Closing the cursor without calling compress does not compress. */
cursor.close();
checkBinEntriesAndCursors(dbin, 2, 0);
/* Finally compress can compress. */
env.compress();
checkBinEntriesAndCursors(dbin, 0, 0);
/* BIN parent should have one less entry. */
assertEquals(2, in.getNEntries());
checkBinEntriesAndCursors(bin, 1, 0);
closeEnv();
}