Package org.iq80.leveldb

Examples of org.iq80.leveldb.ReadOptions

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  @Override
  protected Set<InternalCacheEntry> loadAllLockSafe()
      throws CacheLoaderException {
    Set<InternalCacheEntry> entries = new HashSet<InternalCacheEntry>();

    DBIterator it = db.iterator(new ReadOptions().fillCache(false));
    try {
      for (it.seekToFirst(); it.hasNext();) {
        Map.Entry<byte[], byte[]> entry = it.next();
        entries.add(unmarshall(entry));
      }
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    if (maxEntries <= 0)
      return Collections.emptySet();

    Set<InternalCacheEntry> entries = new HashSet<InternalCacheEntry>();

    DBIterator it = db.iterator(new ReadOptions().fillCache(false));
    try {
      it.seekToFirst();
      for (int i = 0; it.hasNext() && i < maxEntries; i++) {
        Map.Entry<byte[], byte[]> entry = it.next();
        entries.add(unmarshall(entry));
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  @Override
  protected Set<Object> loadAllKeysLockSafe(Set<Object> keysToExclude)
      throws CacheLoaderException {
    Set<Object> keys = new HashSet<Object>();

    DBIterator it = db.iterator(new ReadOptions().fillCache(false));
    try {
      for (it.seekToFirst(); it.hasNext();) {
        Map.Entry<byte[], byte[]> entry = it.next();
        Object key = unmarshall(entry.getKey());
        if (keysToExclude == null || keysToExclude.isEmpty()
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  }

  @Override
  protected void toStreamLockSafe(ObjectOutput oos)
      throws CacheLoaderException {
    DBIterator it = db.iterator(new ReadOptions().fillCache(false));
    try {

      for (it.seekToFirst(); it.hasNext();) {
        Map.Entry<byte[], byte[]> entry = it.next();
        InternalCacheEntry ice = unmarshall(entry);
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        }
      }

      List<Long> times = new ArrayList<Long>();
      List<Object> keys = new ArrayList<Object>();
      DBIterator it = expiredDb.iterator(new ReadOptions()
          .fillCache(false));
      try {
        for (it.seekToFirst(); it.hasNext();) {
          Map.Entry<byte[], byte[]> entry = it.next();
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   }

   @Override
   public void clear() {
      long count = 0;
      DBIterator it = db.iterator(new ReadOptions().fillCache(false));
      boolean destroyDatabase = false;

      if (configuration.clearThreshold() <= 0) {
         try {
            for (it.seekToFirst(); it.hasNext();) {
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      ExecutorCompletionService ecs = new ExecutorCompletionService(executor);
      int tasks = 0;
      final TaskContext taskContext = new TaskContextImpl();

      List<Map.Entry<byte[], byte[]>> entries = new ArrayList<Map.Entry<byte[], byte[]>>(batchSize);
      DBIterator it = db.iterator(new ReadOptions().fillCache(false));
      try {
         for (it.seekToFirst(); it.hasNext();) {
            Map.Entry<byte[], byte[]> entry = it.next();
            entries.add(entry);
            if (entries.size() == batchSize) {
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            }
         }

         List<Long> times = new ArrayList<Long>();
         List<Object> keys = new ArrayList<Object>();
         DBIterator it = expiredDb.iterator(new ReadOptions().fillCache(false));
         try {
            for (it.seekToFirst(); it.hasNext();) {
               Map.Entry<byte[], byte[]> entry = it.next();

               Long time = (Long) unmarshall(entry.getKey());
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   }

   @Override
   public void clear() {
      long count = 0;
      DBIterator it = db.iterator(new ReadOptions().fillCache(false));
      boolean destroyDatabase = false;

      if (configuration.clearThreshold() <= 0) {
         try {
            for (it.seekToFirst(); it.hasNext();) {
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      int batchSize = 100;
      ExecutorAllCompletionService eacs = new ExecutorAllCompletionService(executor);
      final TaskContext taskContext = new TaskContextImpl();

      List<Map.Entry<byte[], byte[]>> entries = new ArrayList<Map.Entry<byte[], byte[]>>(batchSize);
      DBIterator it = db.iterator(new ReadOptions().fillCache(false));
      try {
         for (it.seekToFirst(); it.hasNext();) {
            Map.Entry<byte[], byte[]> entry = it.next();
            entries.add(entry);
            if (entries.size() == batchSize) {
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