Examples of com.sleepycat.je.Database.openCursor()

com.sleepycat.je.Database.openCursor()
Returns a cursor into the database. @param txn the transaction used to protect all operations performed withthe cursor, or null if the operations should not be transaction protected. If the database is non-transactional, null must be specified. For a transactional database, the transaction is optional for read-only access and required for read-write access. @param cursorConfig The cursor attributes. If null, default attributesare used. @return A database cursor. @throws com.sleepycat.je.rep.DatabasePreemptedException in a replicatedenvironment if the master has truncated, removed or renamed the database. @throws OperationFailureException if this exception occurred earlier andcaused the transaction to be invalidated. @throws EnvironmentFailureException if an unexpected, internal orenvironment-wide failure occurs. @throws IllegalStateException if the database has been closed. @throws IllegalArgumentException if an invalid parameter is specified,for example, an invalid {@code CursorConfig} parameter.

        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();
        }
    }

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        DatabaseConfig config = new DatabaseConfig();
        config.setReadOnly(true);
        DbInternal.setUseExistingConfig(config, true);
  Database myDb = env.openDatabase(null, dbName + dumpIndex, config);
  Cursor cursor = myDb.openCursor(null, null);
  StringDbt foundKey = new StringDbt();
  StringDbt foundData = new StringDbt();
  OperationStatus status =
      cursor.getFirst(foundKey, foundData, LockMode.DEFAULT);
  while (status == OperationStatus.SUCCESS) {

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    new CascadingAbortTestJUnitThread(txn2, db) {
        public void testBody()
      throws Throwable {


      System.out.println("about to yield in thread");
      Cursor c = db.openCursor(txn, null);
      DatabaseEntry data = new DatabaseEntry();
      try {
          Thread.yield();
          DatabaseEntry key = new DatabaseEntry();
          System.out.println("about to gSKR in thread");

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                System.arraycopy(bytes, 0, cursorBytes, 0, bytes.length);


                cursorData.setPartial(true);


                cursor = blocks.openCursor(txn, null);


                if (cursor.getSearchKey(cursorKey, cursorData, null) != OperationStatus.NOTFOUND) {
                    cursor.delete();
                    advance: while (cursor.getNext(cursorKey, cursorData, null) != OperationStatus.NOTFOUND) {
                        byte[] temp = cursorKey.getData();

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        Database versionDb = null;
        Cursor cursor = null;
        try
        {
            versionDb = _environment.openDatabase(null, Upgrader.VERSION_DB_NAME, dbConfig);
            cursor = versionDb.openCursor(null, null);
            DatabaseEntry key = new DatabaseEntry();
            DatabaseEntry value = new DatabaseEntry();
            while (cursor.getNext(key, value, null) == OperationStatus.SUCCESS)
            {
                int version = IntegerBinding.entryToInt(key);

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        Database db = env.openDatabase(null, dbName, dbConfig);
  dupSort = db.getConfig().getSortedDuplicates();


  printHeader(outputFile, dupSort, formatUsingPrintable);


  Cursor cursor = db.openCursor(null, null);
  while (cursor.getNext(foundKey, foundData, LockMode.DEFAULT) ==
               OperationStatus.SUCCESS) {
      dumpOne(outputFile, foundKey.getData(), formatUsingPrintable);
      dumpOne(outputFile, foundData.getData(), formatUsingPrintable);
  }

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    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) ==

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                System.arraycopy(bytes, 0, cursorBytes, 0, bytes.length);


                cursorData.setPartial(true);


                cursor = blocks.openCursor(txn, null);


                if (cursor.getSearchKey(cursorKey, cursorData, null) != OperationStatus.NOTFOUND) {
                    cursor.delete();


                    while (cursor.getNextDup(cursorKey, cursorData, null) != OperationStatus.NOTFOUND) {

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     * using this method.
     */
    db = dc.openDatabase("db", dbConfig);
    secDb = dc.openSecondaryDatabase("secDb", db, secDbConfig);
    System.out.println("blort");
    cursor = db.openCursor(null, null);
    cursor.put(new DatabaseEntry(key.getBytes()),
         new DatabaseEntry(data.getBytes()));
      } finally {
    if (cursor != null) {
        cursor.close();

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     * 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()),
            data,
            null);
    return new String(data.getData());

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