Examples with ReadTransaction com.apple.foundationdb.ReadTransaction used on opensource projects

Example 6 with ReadTransaction

use of com.apple.foundationdb.ReadTransaction in project fdb-record-layer by FoundationDB.

the class FDBRecordStore method loadRawRecordAsync.

/**
 * Asynchronously read a record from the database.
 * @param primaryKey the key for the record to be loaded
 * @param sizeInfo a size info to fill in from serializer
 * @param snapshot whether to snapshot read
 * @return a CompletableFuture that will return a message or null if there was no record with that key
 */
@Nonnull
private CompletableFuture<FDBRawRecord> loadRawRecordAsync(@Nonnull final Tuple primaryKey, @Nullable final SplitHelper.SizeInfo sizeInfo, final boolean snapshot) {
    final FDBPreloadRecordCache.Entry entry = preloadCache.get(primaryKey);
    if (entry != null) {
        return CompletableFuture.completedFuture(entry.orElse(null));
    }
    final RecordMetaData metaData = metaDataProvider.getRecordMetaData();
    final ReadTransaction tr = snapshot ? ensureContextActive().snapshot() : ensureContextActive();
    return SplitHelper.loadWithSplit(tr, context, recordsSubspace(), primaryKey, metaData.isSplitLongRecords(), omitUnsplitRecordSuffix, sizeInfo);
}

Example 7 with ReadTransaction

use of com.apple.foundationdb.ReadTransaction in project fdb-record-layer by FoundationDB.

the class FDBRecordStore method recordExistsAsync.

@Override
@Nonnull
public CompletableFuture<Boolean> recordExistsAsync(@Nonnull final Tuple primaryKey, @Nonnull final IsolationLevel isolationLevel) {
    final RecordMetaData metaData = metaDataProvider.getRecordMetaData();
    final ReadTransaction tr = isolationLevel.isSnapshot() ? ensureContextActive().snapshot() : ensureContextActive();
    return SplitHelper.keyExists(tr, context, recordsSubspace(), primaryKey, metaData.isSplitLongRecords(), omitUnsplitRecordSuffix);
}