コード例 #1
0
ファイル: Backend.java プロジェクト: roy-luoll/titan
 /**
  * Clears the storage of all registered backend data providers. This includes backend storage
  * engines and index providers.
  *
  * <p>IMPORTANT: Clearing storage means that ALL data will be lost and cannot be recovered.
  *
  * @throws StorageException
  */
 public void clearStorage() throws StorageException {
   edgeStore.close();
   vertexIndexStore.close();
   edgeIndexStore.close();
   idAuthority.close();
   storeManager.clearStorage();
   // Indexes
   for (IndexProvider index : indexes.values()) index.clearStorage();
 }
 @Override
 public void mutateMany(
     Map<String, Map<StaticBuffer, KCVMutation>> mutations, StoreTransaction txh)
     throws BackendException {
   for (Map.Entry<String, Map<StaticBuffer, KCVMutation>> storeMut : mutations.entrySet()) {
     KeyColumnValueStore store = stores.get(storeMut.getKey());
     Preconditions.checkNotNull(store);
     for (Map.Entry<StaticBuffer, KCVMutation> keyMut : storeMut.getValue().entrySet()) {
       store.mutate(
           keyMut.getKey(),
           keyMut.getValue().getAdditions(),
           keyMut.getValue().getDeletions(),
           txh);
     }
   }
 }
コード例 #3
0
ファイル: Backend.java プロジェクト: rlwu607/titan
 private KeyColumnValueStore getLockStore(KeyColumnValueStore store) throws StorageException {
   if (!storeFeatures.supportsLocking()) {
     if (storeFeatures.isTransactional()) {
       store = new TransactionalLockStore(store);
     } else if (storeFeatures.supportsConsistentKeyOperations()) {
       store =
           new ConsistentKeyLockStore(
               store, getStore(store.getName() + LOCK_STORE_SUFFIX), lockConfiguration);
     } else throw new IllegalArgumentException("Store needs to support some form of locking");
   }
   return store;
 }
コード例 #4
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 @Test
 public void addRecords() throws StorageException {
   for (int r = 0; r < numRows; r++) {
     int numCols = 10;
     List<Entry> entries = new ArrayList<Entry>();
     for (int c = 0; c < numCols; c++) {
       entries.add(
           new StaticBufferEntry(
               KeyValueStoreUtil.getBuffer(c + 1), KeyValueStoreUtil.getBuffer(c + r + 2)));
     }
     store.mutate(
         KeyValueStoreUtil.getBuffer(r + 1), entries, KeyColumnValueStore.NO_DELETIONS, tx);
   }
   tx.commit();
   tx = null;
 }
コード例 #5
0
ファイル: Backend.java プロジェクト: roy-luoll/titan
 private KeyColumnValueStore getLockStore(KeyColumnValueStore store, boolean lockEnabled)
     throws StorageException {
   if (!storeFeatures.supportsLocking()) {
     if (storeFeatures.supportsTransactions()) {
       store = new TransactionalLockStore(store);
     } else if (storeFeatures.supportsConsistentKeyOperations()) {
       if (lockEnabled) {
         final String lockerName = store.getName() + LOCK_STORE_SUFFIX;
         store = new ExpectedValueCheckingStore(store, getLocker(lockerName));
       } else {
         store = new ExpectedValueCheckingStore(store, null);
       }
     } else throw new IllegalArgumentException("Store needs to support some form of locking");
   }
   return store;
 }
コード例 #6
0
 public void close() throws StorageException {
   if (tx != null) tx.commit();
   store.close();
   manager.close();
 }
コード例 #7
0
ファイル: Backend.java プロジェクト: rlwu607/titan
 public void clearStorage() throws StorageException {
   edgeStore.close();
   vertexIndexStore.close();
   idAuthority.close();
   storeManager.clearStorage();
 }