Examples with Transaction jetbrains.exodus.env.Transaction used on opensource projects

Example 1 with Transaction

use of jetbrains.exodus.env.Transaction in project xodus by JetBrains.

the class PersistentSequentialDictionary method getOrAllocateId.

public int getOrAllocateId(@NotNull final TxnProvider txnProvider, @NotNull final String name) {
    Integer result = cache.get(name);
    if (result != null && result >= 0) {
        return result;
    }
    synchronized (lock) {
        result = cache.get(name);
        if (result != null && result >= 0) {
            return result;
        }
        final ByteIterable nameEntry = StringBinding.stringToEntry(name);
        final PersistentStoreTransaction txn = txnProvider.getTransaction();
        final ByteIterable idEntry = table.get(txn.getEnvironmentTransaction(), nameEntry);
        final int id = idEntry == null ? (int) sequence.increment() : IntegerBinding.compressedEntryToInt(idEntry);
        putIdUnsafe(name, id);
        if (idEntry == null) {
            operationsLog.add(new DictionaryOperation() {

                @Override
                public void persist(final Transaction txn) {
                    table.put(txn, nameEntry, IntegerBinding.intToCompressedEntry(id));
                }
            });
            created(txn, id);
        }
        return id;
    }
}

Example 2 with Transaction

use of jetbrains.exodus.env.Transaction in project xodus by JetBrains.

the class VFSBlobVault method refactorFromFS.

public void refactorFromFS(@NotNull final PersistentEntityStoreImpl store) throws IOException {
    final BlobVault sourceVault = new FileSystemBlobVaultOld(store.getConfig(), store.getLocation(), "blobs", ".blob", BlobHandleGenerator.IMMUTABLE);
    final LongSet allBlobs = store.computeInReadonlyTransaction(new StoreTransactionalComputable<LongSet>() {

        @Override
        public LongSet compute(@NotNull final StoreTransaction txn) {
            return loadAllBlobs(store, (PersistentStoreTransaction) txn);
        }
    });
    final Environment env = fs.getEnvironment();
    final Transaction txn = env.beginTransaction();
    try {
        int i = 0;
        for (final long blobId : allBlobs) {
            if (i++ % 100 == 0) {
                txn.flush();
            }
            final InputStream content = sourceVault.getContent(blobId, txn);
            if (content != null) {
                importBlob(txn, blobId, content);
            }
        }
        txn.flush();
    } catch (final IOException ioe) {
        throw new EntityStoreException(ioe);
    } finally {
        txn.abort();
    }
}

Example 3 with Transaction

use of jetbrains.exodus.env.Transaction in project xodus by JetBrains.

the class VFSBlobVault method loadAllBlobs.

@NotNull
private static LongSet loadAllBlobs(@NotNull final PersistentEntityStoreImpl store, @NotNull final PersistentStoreTransaction txn) {
    final LongSet result = new PackedLongHashSet();
    final Transaction envTxn = txn.getEnvironmentTransaction();
    try (Cursor entityTypesCursor = store.getEntityTypesTable().getSecondIndexCursor(envTxn)) {
        while (entityTypesCursor.getNext()) {
            final int entityTypeId = IntegerBinding.compressedEntryToInt(entityTypesCursor.getKey());
            final BlobsTable blobs = store.getBlobsTable(txn, entityTypeId);
            final Store primary = blobs.getPrimaryIndex();
            try (Cursor blobsCursor = primary.openCursor(envTxn)) {
                while (blobsCursor.getNext()) {
                    final long blobId = LongBinding.compressedEntryToLong(blobsCursor.getValue());
                    result.add(blobId);
                }
            }
        }
        return result;
    }
}

Example 4 with Transaction

use of jetbrains.exodus.env.Transaction in project xodus by JetBrains.

the class VfsSettings method get.

ByteIterable get(@Nullable final Transaction txn, @NotNull final String settingName) {
    final ArrayByteIterable key = StringBinding.stringToEntry(settingName);
    if (txn != null) {
        return settingStore.get(txn, key);
    }
    final ByteIterable[] result = new ByteIterable[1];
    env.executeInTransaction(new TransactionalExecutable() {

        @Override
        public void execute(@NotNull final Transaction txn) {
            result[0] = settingStore.get(txn, key);
        }
    });
    return result[0];
}

Example 5 with Transaction

use of jetbrains.exodus.env.Transaction in project xodus by JetBrains.

the class VfsFileTests method testCreateUniqueFile.

@Test
public void testCreateUniqueFile() {
    final Transaction txn = env.beginTransaction();
    final File file = vfs.createUniqueFile(txn, "file");
    txn.commit();
    Assert.assertEquals(0L, file.getDescriptor());
    Assert.assertTrue(file.getPath().startsWith("file"));
}