Examples with ValueRange com.apple.foundationdb.record.ValueRange used on opensource projects

Example 1 with ValueRange

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

the class KeySpaceDirectory method listSubdirectoryAsync.

@Nonnull
// SonarQube doesn't realize that the cursor is wrapped and returned
@SuppressWarnings("squid:S2095")
protected RecordCursor<ResolvedKeySpacePath> listSubdirectoryAsync(@Nullable KeySpacePath listFrom, @Nonnull FDBRecordContext context, @Nonnull String subdirName, @Nullable ValueRange<?> valueRange, @Nullable byte[] continuation, @Nonnull ScanProperties scanProperties) {
    if (listFrom != null && listFrom.getDirectory() != this) {
        throw new RecordCoreException("Provided path does not belong to this directory").addLogInfo("path", listFrom, "directory", this.getName());
    }
    final KeySpaceDirectory subdir = getSubdirectory(subdirName);
    final CompletableFuture<ResolvedKeySpacePath> resolvedFromFuture = listFrom == null ? CompletableFuture.completedFuture(null) : listFrom.toResolvedPathAsync(context);
    // The chained cursor cannot implement reverse scan, so we implement it by having the
    // inner key value cursor do the reversing but telling the chained cursor we are moving
    // forward.
    final ScanProperties chainedCursorScanProperties;
    if (scanProperties.isReverse()) {
        chainedCursorScanProperties = scanProperties.setReverse(false);
    } else {
        chainedCursorScanProperties = scanProperties;
    }
    // For the read of the individual row keys, we only want to read a single key. In addition,
    // the ChainedCursor is going to do counting of our reads to apply any limits that were specified
    // on the ScanProperties.  We don't want the inner KeyValueCursor in nextTuple() to ALSO count those
    // same reads so we clear out its limits.
    final ScanProperties keyReadScanProperties = scanProperties.with(props -> props.clearState().setReturnedRowLimit(1));
    return new LazyCursor<>(resolvedFromFuture.thenCompose(resolvedFrom -> {
        final Subspace subspace = resolvedFrom == null ? new Subspace() : resolvedFrom.toSubspace();
        return subdir.getValueRange(context, valueRange, subspace).thenApply(range -> {
            final RecordCursor<Tuple> cursor = new ChainedCursor<>(context, lastKey -> nextTuple(context, subspace, range, lastKey, keyReadScanProperties), Tuple::pack, Tuple::fromBytes, continuation, chainedCursorScanProperties);
            return cursor.mapPipelined(tuple -> {
                final Tuple key = Tuple.fromList(tuple.getItems());
                return findChildForKey(context, resolvedFrom, key, 1, 0);
            }, 1);
        });
    }), context.getExecutor());
}

Example 2 with ValueRange

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

the class KeySpaceDirectoryTest method testListAnyValue.

@Test
public void testListAnyValue() throws Exception {
    // Create a root directory called "a" with subdirs of every type (no constants for now)
    Long rootValue = random.nextLong();
    KeySpaceDirectory dirA = new KeySpaceDirectory("a", KeyType.LONG, rootValue);
    for (KeyTypeValue kv : valueOfEveryType) {
        dirA.addSubdirectory(new KeySpaceDirectory(kv.keyType.toString(), kv.keyType));
    }
    KeySpace root = new KeySpace(dirA);
    final FDBDatabase database = FDBDatabaseFactory.instance().getDatabase();
    final Map<KeyType, List<Tuple>> valuesForType = new HashMap<>();
    // Create an entry in the keyspace with a row for every type that we support
    try (FDBRecordContext context = database.openContext()) {
        Transaction tr = context.ensureActive();
        for (KeyTypeValue kv : valueOfEveryType) {
            List<Tuple> values = new ArrayList<>();
            for (int i = 0; i < 5; i++) {
                Object value = kv.generator.get();
                Tuple tupleValue = Tuple.from(value);
                if (!values.contains(tupleValue)) {
                    values.add(tupleValue);
                    // final results.
                    for (int j = 0; j < 5; j++) {
                        tr.set(Tuple.from(rootValue, value, j).pack(), Tuple.from(i).pack());
                    }
                }
            }
            valuesForType.put(kv.keyType, values);
        }
        context.commit();
    }
    try (FDBRecordContext context = database.openContext()) {
        for (KeyTypeValue kv : valueOfEveryType) {
            if (kv.keyType != KeyType.NULL) {
                List<Tuple> values = valuesForType.get(kv.keyType);
                for (Pair<ValueRange<Object>, List<Tuple>> testCase : listRangeTestCases(values)) {
                    testListRange(testCase.getLeft(), testCase.getRight(), context, root, kv.keyType);
                }
            }
        }
    }
}

Example 3 with ValueRange

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

the class KeySpaceDirectoryTest method testInvalidListRange.

@Test
public void testInvalidListRange() throws Exception {
    final String rootDir = "root_dir";
    final String stringDir = "string_dir";
    final String longConstDir = "long_const_dir";
    KeySpaceDirectory dirA = new KeySpaceDirectory(rootDir, KeyType.LONG, random.nextLong()).addSubdirectory(new KeySpaceDirectory(stringDir, KeyType.STRING)).addSubdirectory(new KeySpaceDirectory(longConstDir, KeyType.LONG, 100));
    KeySpace root = new KeySpace(dirA);
    final FDBDatabase database = FDBDatabaseFactory.instance().getDatabase();
    try (FDBRecordContext context = database.openContext()) {
        // Positive example.
        root.path(rootDir).listSubdirectory(context, stringDir, new ValueRange<>("A", "B", EndpointType.RANGE_INCLUSIVE, EndpointType.RANGE_EXCLUSIVE), null, ScanProperties.FORWARD_SCAN);
        // The range value should be in the same type.
        assertThrows(RecordCoreArgumentException.class, () -> root.path(rootDir).listSubdirectory(context, stringDir, new ValueRange<>(100, 200, EndpointType.RANGE_INCLUSIVE, EndpointType.RANGE_EXCLUSIVE), null, ScanProperties.FORWARD_SCAN));
        // PREFIX_STRING should not be used as a endpoint type.
        assertThrows(RecordCoreArgumentException.class, () -> root.path(rootDir).listSubdirectory(context, stringDir, new ValueRange<>("A", "B", EndpointType.PREFIX_STRING, EndpointType.RANGE_EXCLUSIVE), null, ScanProperties.FORWARD_SCAN));
        // Range should be null when the subdirectory has a value.
        assertThrows(RecordCoreArgumentException.class, () -> root.path(rootDir).listSubdirectory(context, longConstDir, new ValueRange<>(100, 200, EndpointType.RANGE_INCLUSIVE, EndpointType.RANGE_EXCLUSIVE), null, ScanProperties.FORWARD_SCAN));
    }
}