How to use

checkNotClosed

method

in

com.nostra13.universalimageloader.cache.disc.impl.ext.DiskLruCache

/** Force buffered operations to the filesystem. */
public synchronized void flush() throws IOException {
  checkNotClosed();
  trimToSize();
  trimToFileCount();
  journalWriter.flush();
}

private synchronized Editor edit(String key, long expectedSequenceNumber) throws IOException {
  checkNotClosed();
  validateKey(key);
  Entry entry = lruEntries.get(key);
  if (expectedSequenceNumber != ANY_SEQUENCE_NUMBER && (entry == null
      || entry.sequenceNumber != expectedSequenceNumber)) {
    return null; // Snapshot is stale.
  }
  if (entry == null) {
    entry = new Entry(key);
    lruEntries.put(key, entry);
  } else if (entry.currentEditor != null) {
    return null; // Another edit is in progress.
  }
  Editor editor = new Editor(entry);
  entry.currentEditor = editor;
  // Flush the journal before creating files to prevent file leaks.
  journalWriter.write(DIRTY + ' ' + key + '\n');
  journalWriter.flush();
  return editor;
}

/**
 * Drops the entry for {@code key} if it exists and can be removed. Entries
 * actively being edited cannot be removed.
 *
 * @return true if an entry was removed.
 */
public synchronized boolean remove(String key) throws IOException {
  checkNotClosed();
  validateKey(key);
  Entry entry = lruEntries.get(key);
  if (entry == null || entry.currentEditor != null) {
    return false;
  }
  for (int i = 0; i < valueCount; i++) {
    File file = entry.getCleanFile(i);
    if (file.exists() && !file.delete()) {
      throw new IOException("failed to delete " + file);
    }
    size -= entry.lengths[i];
    fileCount--;
    entry.lengths[i] = 0;
  }
  redundantOpCount++;
  journalWriter.append(REMOVE + ' ' + key + '\n');
  lruEntries.remove(key);
  if (journalRebuildRequired()) {
    executorService.submit(cleanupCallable);
  }
  return true;
}

checkNotClosed();
validateKey(key);
Entry entry = lruEntries.get(key);

/** Force buffered operations to the filesystem. */
public synchronized void flush() throws IOException {
  checkNotClosed();
  trimToSize();
  trimToFileCount();
  journalWriter.flush();
}

/** Force buffered operations to the filesystem. */
public synchronized void flush() throws IOException {
  checkNotClosed();
  trimToSize();
  trimToFileCount();
  journalWriter.flush();
}

/** Force buffered operations to the filesystem. */
public synchronized void flush() throws IOException {
  checkNotClosed();
  trimToSize();
  trimToFileCount();
  journalWriter.flush();
}

private synchronized Editor edit(String key, long expectedSequenceNumber) throws IOException {
  checkNotClosed();
  validateKey(key);
  Entry entry = lruEntries.get(key);
  if (expectedSequenceNumber != ANY_SEQUENCE_NUMBER && (entry == null
      || entry.sequenceNumber != expectedSequenceNumber)) {
    return null; // Snapshot is stale.
  }
  if (entry == null) {
    entry = new Entry(key);
    lruEntries.put(key, entry);
  } else if (entry.currentEditor != null) {
    return null; // Another edit is in progress.
  }
  Editor editor = new Editor(entry);
  entry.currentEditor = editor;
  // Flush the journal before creating files to prevent file leaks.
  journalWriter.write(DIRTY + ' ' + key + '\n');
  journalWriter.flush();
  return editor;
}

private synchronized Editor edit(String key, long expectedSequenceNumber) throws IOException {
  checkNotClosed();
  validateKey(key);
  Entry entry = lruEntries.get(key);
  if (expectedSequenceNumber != ANY_SEQUENCE_NUMBER && (entry == null
      || entry.sequenceNumber != expectedSequenceNumber)) {
    return null; // Snapshot is stale.
  }
  if (entry == null) {
    entry = new Entry(key);
    lruEntries.put(key, entry);
  } else if (entry.currentEditor != null) {
    return null; // Another edit is in progress.
  }
  Editor editor = new Editor(entry);
  entry.currentEditor = editor;
  // Flush the journal before creating files to prevent file leaks.
  journalWriter.write(DIRTY + ' ' + key + '\n');
  journalWriter.flush();
  return editor;
}

private synchronized Editor edit(String key, long expectedSequenceNumber) throws IOException {
  checkNotClosed();
  validateKey(key);
  Entry entry = lruEntries.get(key);
  if (expectedSequenceNumber != ANY_SEQUENCE_NUMBER && (entry == null
      || entry.sequenceNumber != expectedSequenceNumber)) {
    return null; // Snapshot is stale.
  }
  if (entry == null) {
    entry = new Entry(key);
    lruEntries.put(key, entry);
  } else if (entry.currentEditor != null) {
    return null; // Another edit is in progress.
  }
  Editor editor = new Editor(entry);
  entry.currentEditor = editor;
  // Flush the journal before creating files to prevent file leaks.
  journalWriter.write(DIRTY + ' ' + key + '\n');
  journalWriter.flush();
  return editor;
}

/**
 * Drops the entry for {@code key} if it exists and can be removed. Entries
 * actively being edited cannot be removed.
 *
 * @return true if an entry was removed.
 */
public synchronized boolean remove(String key) throws IOException {
  checkNotClosed();
  validateKey(key);
  Entry entry = lruEntries.get(key);
  if (entry == null || entry.currentEditor != null) {
    return false;
  }
  for (int i = 0; i < valueCount; i++) {
    File file = entry.getCleanFile(i);
    if (file.exists() && !file.delete()) {
      throw new IOException("failed to delete " + file);
    }
    size -= entry.lengths[i];
    fileCount--;
    entry.lengths[i] = 0;
  }
  redundantOpCount++;
  journalWriter.append(REMOVE + ' ' + key + '\n');
  lruEntries.remove(key);
  if (journalRebuildRequired()) {
    executorService.submit(cleanupCallable);
  }
  return true;
}

/**
 * Drops the entry for {@code key} if it exists and can be removed. Entries
 * actively being edited cannot be removed.
 *
 * @return true if an entry was removed.
 */
public synchronized boolean remove(String key) throws IOException {
  checkNotClosed();
  validateKey(key);
  Entry entry = lruEntries.get(key);
  if (entry == null || entry.currentEditor != null) {
    return false;
  }
  for (int i = 0; i < valueCount; i++) {
    File file = entry.getCleanFile(i);
    if (file.exists() && !file.delete()) {
      throw new IOException("failed to delete " + file);
    }
    size -= entry.lengths[i];
    fileCount--;
    entry.lengths[i] = 0;
  }
  redundantOpCount++;
  journalWriter.append(REMOVE + ' ' + key + '\n');
  lruEntries.remove(key);
  if (journalRebuildRequired()) {
    executorService.submit(cleanupCallable);
  }
  return true;
}

/**
 * Drops the entry for {@code key} if it exists and can be removed. Entries
 * actively being edited cannot be removed.
 *
 * @return true if an entry was removed.
 */
public synchronized boolean remove(String key) throws IOException {
  checkNotClosed();
  validateKey(key);
  Entry entry = lruEntries.get(key);
  if (entry == null || entry.currentEditor != null) {
    return false;
  }
  for (int i = 0; i < valueCount; i++) {
    File file = entry.getCleanFile(i);
    if (file.exists() && !file.delete()) {
      throw new IOException("failed to delete " + file);
    }
    size -= entry.lengths[i];
    fileCount--;
    entry.lengths[i] = 0;
  }
  redundantOpCount++;
  journalWriter.append(REMOVE + ' ' + key + '\n');
  lruEntries.remove(key);
  if (journalRebuildRequired()) {
    executorService.submit(cleanupCallable);
  }
  return true;
}

checkNotClosed();
validateKey(key);
Entry entry = lruEntries.get(key);

checkNotClosed();
validateKey(key);
Entry entry = lruEntries.get(key);

checkNotClosed();
validateKey(key);
Entry entry = lruEntries.get(key);