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Java Database.openCursor方法代碼示例

本文整理匯總了Java中com.sleepycat.je.Database.openCursor方法的典型用法代碼示例。如果您正苦於以下問題：Java Database.openCursor方法的具體用法？Java Database.openCursor怎麽用？Java Database.openCursor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.Database的用法示例。


在下文中一共展示了Database.openCursor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: getTotalCount

import com.sleepycat.je.Database; //導入方法依賴的package包/類
/**
 * 獲取總數
 * @param dbName
 * @return
 * @throws Exception
 */
public int getTotalCount(String dbName) throws Exception {
    int count = 0;
    Cursor cursor = null;
    try {
        Database db = this.getDb(dbName);
        cursor = db.openCursor(null, null);
        DatabaseEntry foundKey = new DatabaseEntry();
        DatabaseEntry foundData = new DatabaseEntry();
        if (cursor.getLast(foundKey, foundData, LockMode.DEFAULT) == OperationStatus.SUCCESS) {
            count = cursor.count();
        }
    } finally {
        if (cursor != null) {
            cursor.close();
        }
    }
    return count;
}
開發者ID:tiglabs，項目名稱:jsf-core，代碼行數:25，代碼來源:BerkeleyDb.java

示例2: testCursorDupAndCloseDb

import com.sleepycat.je.Database; //導入方法依賴的package包/類
public void testCursorDupAndCloseDb()
throws DatabaseException {

       initEnv(false);
       DatabaseConfig dbConfig = new DatabaseConfig();
       dbConfig.setAllowCreate(true);
       Database myDb = exampleEnv.openDatabase(null, "fooDb", dbConfig);

myDb.put(null, new StringDbt("blah"), new StringDbt("blort"));
Cursor cursor = myDb.openCursor(null, null);
OperationStatus status = cursor.getNext(new DatabaseEntry(),
                                               new DatabaseEntry(),
                                               LockMode.DEFAULT);
Cursor cursorDup = cursor.dup(true);
cursor.close();
cursorDup.close();
myDb.close();
   }
開發者ID:nologic，項目名稱:nabs，代碼行數:19，代碼來源:DbCursorDupTest.java

示例3: initDbs

import com.sleepycat.je.Database; //導入方法依賴的package包/類
/**
    * Set up the environment and db.
    */
   private void initDbs(int nDumps, Hashtable[] dataMaps)
throws DatabaseException {

EnvironmentConfig envConfig = TestUtils.initEnvConfig();
       envConfig.setConfigParam(EnvironmentParams.NODE_MAX.getName(), "6");
       envConfig.setAllowCreate(true);
       env = new Environment(envHome, envConfig);

       /* Make a db and open it. */
       for (int i = 0; i < nDumps; i += 1) {
           DatabaseConfig dbConfig = new DatabaseConfig();
           dbConfig.setAllowCreate(true);
           dbConfig.setSortedDuplicates(true);
           Database myDb = env.openDatabase(null, dbName + i, dbConfig);
           Cursor cursor = myDb.openCursor(null, null);
           doLargePut(dataMaps[i], cursor, N_KEYS);
           cursor.close();
           myDb.close();
       }
   }
開發者ID:nologic，項目名稱:nabs，代碼行數:24，代碼來源:DbDumpTest.java

示例4: dumpData

import com.sleepycat.je.Database; //導入方法依賴的package包/類
void dumpData(Database db)
    throws DatabaseException {

    Cursor cursor = db.openCursor(null, null);
    DatabaseEntry key = new DatabaseEntry();
    DatabaseEntry data = new DatabaseEntry();
    int i = 0;
    try {
        while (cursor.getNext(key, data, null) ==
               OperationStatus.SUCCESS) {
            TestData t = new TestData(key, data);
            System.out.println(t);
            i++;
        }
    }
    finally {
        cursor.close();
    }
    System.out.println("scanned=" + i);
}
開發者ID:nologic，項目名稱:nabs，代碼行數:21，代碼來源:CheckBase.java

示例5: get

import com.sleepycat.je.Database; //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;
  }
開發者ID:tiglabs，項目名稱:jsf-core，代碼行數:45，代碼來源:BerkeleyDb.java

示例6: getCursor

import com.sleepycat.je.Database; //導入方法依賴的package包/類
public ISchematicCursor getCursor(ITransaction txn, IndexMeta indexMeta, String isolation, String actualTableName)
                                                                                                                  throws TddlException {
    Database db = getDatabase(actualTableName);
    if (db == null) {
        throw new IllegalArgumentException("table don't contains indexName:" + actualTableName);
    }
    CursorConfig cc = CursorConfig.DEFAULT;
    LockMode lm = LockMode.DEFAULT;
    if (txn != null) {
        com.sleepycat.je.TransactionConfig _config = ((JE_Transaction) txn).config;
        if (_config.getReadUncommitted()) {
            cc = CursorConfig.READ_UNCOMMITTED;
            lm = LockMode.READ_UNCOMMITTED;
        } else if (_config.getReadCommitted()) {
            cc = CursorConfig.READ_COMMITTED;
            // lm = LockMode.READ_COMMITTED;
        }
    } else {
        if (Isolation.READ_COMMITTED.equals(isolation)) {
            cc = CursorConfig.READ_COMMITTED;
            // lm = LockMode.READ_COMMITTED;//not support
        } else if (Isolation.READ_UNCOMMITTED.equals(isolation)) {
            cc = CursorConfig.READ_UNCOMMITTED;
            lm = LockMode.READ_UNCOMMITTED;
        } else if (Isolation.REPEATABLE_READ.equals(isolation)) {
            // default
        } else if (Isolation.SERIALIZABLE.equals(isolation)) {
            // txn_config
        }
    }
    JE_Cursor je_cursor = new JE_Cursor(indexMeta, db.openCursor(txn == null ? null : ((JE_Transaction) txn).txn,
        cc), lm);
    if (txn != null) {
        ((JE_Transaction) txn).addCursor(je_cursor);
    }
    return new SchematicCursor(je_cursor, je_cursor.getiCursorMeta(), ExecUtils.getOrderBy(indexMeta));
}
開發者ID:loye168，項目名稱:tddl5，代碼行數:38，代碼來源:JE_Table.java

示例7: getCursor

import com.sleepycat.je.Database; //導入方法依賴的package包/類
public ISchematicCursor getCursor(ITransaction txn, IndexMeta indexMeta, String isolation, String actualTableName)
                                                                                                                  throws TddlException {
    Database db = getDatabase(actualTableName);
    if (db == null) {
        throw new TddlException("table don't contains indexName:" + actualTableName);
    }
    CursorConfig cc = CursorConfig.DEFAULT;
    LockMode lm = LockMode.DEFAULT;
    if (txn != null) {
        com.sleepycat.je.TransactionConfig _config = ((JE_Transaction) txn).config;
        if (_config.getReadUncommitted()) {
            cc = CursorConfig.READ_UNCOMMITTED;
            lm = LockMode.READ_UNCOMMITTED;
        } else if (_config.getReadCommitted()) {
            cc = CursorConfig.READ_COMMITTED;
            // lm = LockMode.READ_COMMITTED;
        }
    } else {
        if (Isolation.READ_COMMITTED.equals(isolation)) {
            cc = CursorConfig.READ_COMMITTED;
            // lm = LockMode.READ_COMMITTED;//not support
        } else if (Isolation.READ_UNCOMMITTED.equals(isolation)) {
            cc = CursorConfig.READ_UNCOMMITTED;
            lm = LockMode.READ_UNCOMMITTED;
        } else if (Isolation.REPEATABLE_READ.equals(isolation)) {
            // default
        } else if (Isolation.SERIALIZABLE.equals(isolation)) {
            // txn_config
        }
    }
    JE_Cursor je_cursor = new JE_Cursor(indexMeta,

    db.openCursor(txn == null ? null : ((JE_Transaction) txn).txn, cc), lm);
    if (txn != null) {
        ((JE_Transaction) txn).addCursor(je_cursor);
    }
    return new SchematicCursor(je_cursor, je_cursor.getiCursorMeta(), ExecUtils.getOrderBy(indexMeta));
}
開發者ID:beebeandwer，項目名稱:TDDL，代碼行數:39，代碼來源:JE_Table.java

示例8: delete

import com.sleepycat.je.Database; //導入方法依賴的package包/類
private void delete(Database db, String keyString, String dataString)
throws DatabaseException {

DatabaseEntry key = new DatabaseEntry(keyString.getBytes());
DatabaseEntry data = new DatabaseEntry(dataString.getBytes());

Cursor c = db.openCursor(null, null);
assertEquals(OperationStatus.SUCCESS,
	     c.getSearchBoth(key, data, null));
assertEquals(OperationStatus.SUCCESS, c.delete());
c.close();
   }
開發者ID:nologic，項目名稱:nabs，代碼行數:13，代碼來源:CheckSR11307.java

示例9: getCursor

import com.sleepycat.je.Database; //導入方法依賴的package包/類
@Override
public ISchematicCursor getCursor(ExecutionContext executionContext, IndexMeta indexMeta, String actualTableName)
                                                                                                                 throws TddlException {
    Database db = getDatabase(actualTableName);
    if (db == null) {
        throw new TddlException("table don't contains indexName:" + actualTableName);
    }
    ITransaction txn = executionContext.getTransaction();
    CursorConfig cc = CursorConfig.DEFAULT;
    LockMode lm = LockMode.DEFAULT;
    if (txn != null) {
        com.sleepycat.je.TransactionConfig _config = ((JE_Transaction) txn).config;
        if (_config.getReadUncommitted()) {
            cc = CursorConfig.READ_UNCOMMITTED;
            lm = LockMode.READ_UNCOMMITTED;
        } else if (_config.getReadCommitted()) {
            cc = CursorConfig.READ_COMMITTED;
            // lm = LockMode.READ_COMMITTED;
        }
    } else {

        cc = CursorConfig.READ_COMMITTED;

    }
    JE_Cursor je_cursor = new JE_Cursor(indexMeta,

    db.openCursor(txn == null ? null : ((JE_Transaction) txn).txn, cc), lm);
    if (txn != null) {
        ((JE_Transaction) txn).addCursor(je_cursor);
    }
    return new SchematicCursor(je_cursor, je_cursor.getiCursorMeta(), ExecUtils.getOrderBy(indexMeta));
}
開發者ID:cpsing，項目名稱:tddl，代碼行數:33，代碼來源:JE_Table.java

示例10: dumpData

import com.sleepycat.je.Database; //導入方法依賴的package包/類
/**
    * Print the contents of the databases out for debugging
    */
   protected void dumpData(int numDbs)
       throws DatabaseException {

       DatabaseConfig dbConfig = new DatabaseConfig();
if (btreeComparisonFunction != null) {
    dbConfig.setBtreeComparator(btreeComparisonFunction.getClass());
}
       dbConfig.setSortedDuplicates(true);
dbConfig.setTransactional(true);
       for (int d = 0; d < numDbs; d++) {
           Database checkDb = env.openDatabase(null, DB_NAME + d, dbConfig);
           Cursor myCursor = checkDb.openCursor(null, null);
           DatabaseEntry key = new DatabaseEntry();
           DatabaseEntry data = new DatabaseEntry();

           OperationStatus status =
	myCursor.getFirst(key, data, LockMode.DEFAULT);
           while (status == OperationStatus.SUCCESS) {
               System.out.println("Database " + d +
                                  " seen = " +
                                  /* 
                                     new String(key.getData()) +
                                     "/" +
                                     new String(data.getData()));
                                  */
                                  TestUtils.dumpByteArray(key.getData()) +
                                  "/" +
                                  TestUtils.dumpByteArray(data.getData()));
               status = myCursor.getNext(key, data, LockMode.DEFAULT);
           }
           myCursor.close();
       }
   }
開發者ID:nologic，項目名稱:nabs，代碼行數:37，代碼來源:RecoveryTestBase.java

示例11: copyDatabaseTo

import com.sleepycat.je.Database; //導入方法依賴的package包/類
/**
 * Utility method to copy the contents from one database to another.
 *
 * @param from ???
 * @param to   ???
 *
 * @throws DatabaseException if ???
 */
private void copyDatabaseTo(Database from, Database to) throws DatabaseException {
    try (Cursor cursor = from.openCursor(null, null)) {
        DatabaseEntry key = new DatabaseEntry();
        DatabaseEntry value = new DatabaseEntry();
        while (cursor.getNext(key, value, LockMode.DEFAULT) == OperationStatus.SUCCESS) {
            to.put(null, key, value);
        }
    }
    to.sync();
}
開發者ID:atlanmod，項目名稱:NeoEMF，代碼行數:19，代碼來源:BerkeleyDbPersistenceBackend.java

示例12: dumpData

import com.sleepycat.je.Database; //導入方法依賴的package包/類
/**
    * Print the contents of the databases out for debugging
    */
   protected void dumpData(int numDbs)
       throws DatabaseException {

       DatabaseConfig dbConfig = new DatabaseConfig();
if (btreeComparisonFunction != null) {
    dbConfig.setBtreeComparator(btreeComparisonFunction.getClass());
}
       dbConfig.setSortedDuplicates(true);
dbConfig.setTransactional(true);
       for (int d = 0; d < numDbs; d++) {
           Database checkDb = env.openDatabase(null, DB_NAME + d, dbConfig);
           Cursor myCursor = checkDb.openCursor(null, null);
           DatabaseEntry key = new DatabaseEntry();
           DatabaseEntry data = new DatabaseEntry();

           OperationStatus status =
	myCursor.getFirst(key, data, LockMode.DEFAULT);
           while (status == OperationStatus.SUCCESS) {
               System.out.println("Database " + d +
                                  " seen = " +
                                  /*
                                     new String(key.getData()) +
                                     "/" +
                                     new String(data.getData()));
                                  */
                                  TestUtils.dumpByteArray(key.getData()) +
                                  "/" +
                                  TestUtils.dumpByteArray(data.getData()));
               status = myCursor.getNext(key, data, LockMode.DEFAULT);
           }
           myCursor.close();
       }
   }
開發者ID:nologic，項目名稱:nabs，代碼行數:37，代碼來源:RecoveryTestBase.java

示例13: setupBINSplitDuringDeletedDINReplay

import com.sleepycat.je.Database; //導入方法依賴的package包/類
/**
 * Insert two dups, delete them, and compress to free the BIN entry;
 * then fill the BIN with LNs and flush the BIN.
 */
private void setupBINSplitDuringDeletedDINReplay(Database db)
    throws DatabaseException {

    setStepwiseStart();

    int max = 128;

    DatabaseEntry key = new DatabaseEntry();
    DatabaseEntry data = new DatabaseEntry();

    IntegerBinding.intToEntry(0, key);
    IntegerBinding.intToEntry(0, data);
    assertEquals(OperationStatus.SUCCESS,
                 db.putNoOverwrite(null, key, data));
    IntegerBinding.intToEntry(1, data);
    assertEquals(OperationStatus.SUCCESS,
                 db.putNoDupData(null, key, data));

    assertEquals(OperationStatus.SUCCESS,
                 db.delete(null, key));

    env.compress();

    Cursor cursor = db.openCursor(null, null);

    for (int i = 1; i <= max; i ++) {
        IntegerBinding.intToEntry(i, key);
        IntegerBinding.intToEntry(0, data);
        assertEquals(OperationStatus.SUCCESS,
                     cursor.putNoOverwrite(key, data));
    }

    TestUtils.logBINAndIN(env, cursor);

    cursor.close();
}
開發者ID:nologic，項目名稱:nabs，代碼行數:41，代碼來源:CheckSplitsTest.java

示例14: put

import com.sleepycat.je.Database; //導入方法依賴的package包/類
public void put(String key, String data)
throws RemoteException {

try {
    Environment env = null;
    Transaction txn = null;
    Database db = null;
    SecondaryDatabase secDb = null;
    Cursor cursor = null;
    JEConnection dc = null;
    try {
	dc = getConnection(JE_ENV);

	env = dc.getEnvironment();
	DatabaseConfig dbConfig = new DatabaseConfig();
	SecondaryConfig secDbConfig = new SecondaryConfig();
	dbConfig.setAllowCreate(true);
	dbConfig.setTransactional(TRANSACTIONAL);
	secDbConfig.setAllowCreate(true);
	secDbConfig.setTransactional(TRANSACTIONAL);
	secDbConfig.setKeyCreator(new MyKeyCreator());

	/*
	 * Use JEConnection.openDatabase() to obtain a cached Database
	 * handle.  Do not call close() on Database handles obtained
	 * using this method.
	 */
	db = dc.openDatabase("db", dbConfig);
	secDb = dc.openSecondaryDatabase("secDb", db, secDbConfig);
	cursor = db.openCursor(null, null);
	cursor.put(new DatabaseEntry(key.getBytes("UTF-8")),
		   new DatabaseEntry(data.getBytes("UTF-8")));
    } finally {
	if (cursor != null) {
	    cursor.close();
	}
	if (dc != null) {
	    dc.close();
	}
    }
} catch (Exception e) {
    System.err.println("Failure in put" + e);
}
   }
開發者ID:nologic，項目名稱:nabs，代碼行數:45，代碼來源:SimpleBean.java

示例15: get

import com.sleepycat.je.Database; //導入方法依賴的package包/類
public String get(String key)
throws RemoteException {

try {
    Environment env = null;
    Transaction txn = null;
    Database db = null;
    Cursor cursor = null;
    JEConnection dc = null;
    try {
	dc = getConnection(JE_ENV);

	env = dc.getEnvironment();
	DatabaseConfig dbConfig = new DatabaseConfig();
	dbConfig.setAllowCreate(true);
	dbConfig.setTransactional(TRANSACTIONAL);

	/*
	 * Use JEConnection.openDatabase() to obtain a cached Database
	 * handle.  Do not call close() on Database handles obtained
	 * using this method.
	 */
	db = dc.openDatabase("db", dbConfig);
	cursor = db.openCursor(null, null);
	DatabaseEntry data = new DatabaseEntry();
	cursor.getSearchKey(new DatabaseEntry(key.getBytes("UTF-8")),
			    data,
			    null);
	return new String(data.getData(), "UTF-8");
    } finally {
	if (cursor != null) {
	    cursor.close();
	}
	if (dc != null) {
	    dc.close();
	}
    }
} catch (Exception e) {
    System.err.println("Failure in get" + e);
    e.printStackTrace();
}
return null;
   }
開發者ID:nologic，項目名稱:nabs，代碼行數:44，代碼來源:SimpleBean.java


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