How to use

getValue

method

in

org.h2.mvstore.Cursor

@Override
public List<Subscription> listAllSubscriptions() {
  LOG.debug("Retrieving existing subscriptions");
  List<Subscription> results = new ArrayList<>();
  Cursor<String, Subscription> mapCursor = subscriptions.cursor(null);
  while (mapCursor.hasNext()) {
    String subscriptionStr = mapCursor.next();
    results.add(mapCursor.getValue());
  }
  LOG.debug("Loaded {} subscriptions", results.size());
  return results;
}

private Set<Integer> collectReferencedChunks() {
  long testVersion = lastChunk.version;
  DataUtils.checkArgument(testVersion > 0, "Collect references on version 0");
  long readCount = getFileStore().readCount.get();
  Set<Integer> referenced = new HashSet<>();
  for (Cursor<String, String> c = meta.cursor("root."); c.hasNext();) {
    String key = c.next();
    if (!key.startsWith("root.")) {
      break;
    }
    long pos = DataUtils.parseHexLong(c.getValue());
    if (pos == 0) {
      continue;
    }
    int mapId = DataUtils.parseHexInt(key.substring("root.".length()));
    collectReferencedChunks(referenced, mapId, pos, 0);
  }
  long pos = lastChunk.metaRootPos;
  collectReferencedChunks(referenced, 0, pos, 0);
  readCount = fileStore.readCount.get() - readCount;
  return referenced;
}

private Set<Integer> collectReferencedChunks() {
  long testVersion = lastChunk.version;
  DataUtils.checkArgument(testVersion > 0, "Collect references on version 0");
  long readCount = getFileStore().readCount.get();
  Set<Integer> referenced = new HashSet<>();
  for (Cursor<String, String> c = meta.cursor("root."); c.hasNext();) {
    String key = c.next();
    if (!key.startsWith("root.")) {
      break;
    }
    long pos = DataUtils.parseHexLong(c.getValue());
    if (pos == 0) {
      continue;
    }
    int mapId = DataUtils.parseHexInt(key.substring("root.".length()));
    collectReferencedChunks(referenced, mapId, pos, 0);
  }
  long pos = lastChunk.metaRootPos;
  collectReferencedChunks(referenced, 0, pos, 0);
  readCount = fileStore.readCount.get() - readCount;
  return referenced;
}

private Set<Integer> collectReferencedChunks() {
  long testVersion = lastChunk.version;
  DataUtils.checkArgument(testVersion > 0, "Collect references on version 0");
  long readCount = getFileStore().readCount;
  Set<Integer> referenced = New.hashSet();
  for (Cursor<String, String> c = meta.cursor("root."); c.hasNext();) {
    String key = c.next();
    if (!key.startsWith("root.")) {
      break;
    }
    long pos = DataUtils.parseHexLong(c.getValue());
    if (pos == 0) {
      continue;
    }
    int mapId = DataUtils.parseHexInt(key.substring("root.".length()));
    collectReferencedChunks(referenced, mapId, pos, 0);
  }
  long pos = lastChunk.metaRootPos;
  collectReferencedChunks(referenced, 0, pos, 0);
  readCount = fileStore.readCount - readCount;
  return referenced;
}

private Set<Integer> collectReferencedChunks() {
  long testVersion = lastChunk.version;
  DataUtils.checkArgument(testVersion > 0, "Collect references on version 0");
  long readCount = getFileStore().readCount;
  Set<Integer> referenced = New.hashSet();
  for (Cursor<String, String> c = meta.cursor("root."); c.hasNext();) {
    String key = c.next();
    if (!key.startsWith("root.")) {
      break;
    }
    long pos = DataUtils.parseHexLong(c.getValue());
    if (pos == 0) {
      continue;
    }
    int mapId = DataUtils.parseHexInt(key.substring("root.".length()));
    collectReferencedChunks(referenced, mapId, pos, 0);
  }
  long pos = lastChunk.metaRootPos;
  collectReferencedChunks(referenced, 0, pos, 0);
  readCount = fileStore.readCount - readCount;
  return referenced;
}

VersionedValue data = cursor.getValue();
data = getValue(key, readLogId, data);
if (data != null && data.value != null) {

VersionedValue data = cursor.getValue();
data = getValue(key, readLogId, data);
if (data != null && data.value != null) {

synchronized (transaction.store.undoLog) {
  K key = cursor.next();
  data = getValue(key, readLogId, cursor.getValue());

synchronized (transaction.store.undoLog) {
  K key = cursor.next();
  data = getValue(key, readLogId, cursor.getValue());