Examples with DirectionID org.janusgraph.graphdb.database.idhandling.IDHandler.DirectionID used on opensource projects

Example 1 with DirectionID

use of org.janusgraph.graphdb.database.idhandling.IDHandler.DirectionID in project janusgraph by JanusGraph.

the class EdgeSerializer method getQuery.

public SliceQuery getQuery(InternalRelationType type, Direction dir, TypedInterval[] sortKey) {
    Preconditions.checkNotNull(type);
    Preconditions.checkNotNull(dir);
    Preconditions.checkArgument(type.isUnidirected(Direction.BOTH) || type.isUnidirected(dir));
    StaticBuffer sliceStart = null, sliceEnd = null;
    RelationCategory rt = type.isPropertyKey() ? RelationCategory.PROPERTY : RelationCategory.EDGE;
    if (dir == Direction.BOTH) {
        assert type.isEdgeLabel();
        sliceStart = IDHandler.getRelationType(type.longId(), getDirID(Direction.OUT, rt), type.isInvisibleType());
        sliceEnd = IDHandler.getRelationType(type.longId(), getDirID(Direction.IN, rt), type.isInvisibleType());
        assert sliceStart.compareTo(sliceEnd) < 0;
        sliceEnd = BufferUtil.nextBiggerBuffer(sliceEnd);
    } else {
        DirectionID dirID = getDirID(dir, rt);
        DataOutput colStart = serializer.getDataOutput(DEFAULT_COLUMN_CAPACITY);
        DataOutput colEnd = serializer.getDataOutput(DEFAULT_COLUMN_CAPACITY);
        IDHandler.writeRelationType(colStart, type.longId(), dirID, type.isInvisibleType());
        IDHandler.writeRelationType(colEnd, type.longId(), dirID, type.isInvisibleType());
        long[] sortKeyIDs = type.getSortKey();
        Preconditions.checkArgument(sortKey.length >= sortKeyIDs.length);
        assert colStart.getPosition() == colEnd.getPosition();
        int keyStartPos = colStart.getPosition();
        int keyEndPos = -1;
        for (int i = 0; i < sortKey.length && sortKey[i] != null; i++) {
            PropertyKey propertyKey = sortKey[i].key;
            Interval interval = sortKey[i].interval;
            if (i >= sortKeyIDs.length) {
                assert !type.multiplicity().isUnique(dir);
                assert propertyKey == ImplicitKey.JANUSGRAPHID || propertyKey == ImplicitKey.ADJACENT_ID;
                assert propertyKey != ImplicitKey.ADJACENT_ID || (i == sortKeyIDs.length);
                assert propertyKey != ImplicitKey.JANUSGRAPHID || (!type.multiplicity().isConstrained() && (i == sortKeyIDs.length || i == sortKeyIDs.length + 1));
                assert colStart.getPosition() == colEnd.getPosition();
                assert interval == null || interval.isPoints();
                keyEndPos = colStart.getPosition();
            } else {
                assert !type.multiplicity().isConstrained();
                assert propertyKey.longId() == sortKeyIDs[i];
            }
            if (interval == null || interval.isEmpty()) {
                break;
            }
            if (interval.isPoints()) {
                if (propertyKey == ImplicitKey.JANUSGRAPHID || propertyKey == ImplicitKey.ADJACENT_ID) {
                    assert !type.multiplicity().isUnique(dir);
                    VariableLong.writePositiveBackward(colStart, (Long) interval.getStart());
                    VariableLong.writePositiveBackward(colEnd, (Long) interval.getEnd());
                } else {
                    writeInline(colStart, propertyKey, interval.getStart(), InlineType.KEY);
                    writeInline(colEnd, propertyKey, interval.getEnd(), InlineType.KEY);
                }
            } else {
                if (interval.getStart() != null)
                    writeInline(colStart, propertyKey, interval.getStart(), InlineType.KEY);
                if (interval.getEnd() != null)
                    writeInline(colEnd, propertyKey, interval.getEnd(), InlineType.KEY);
                switch(type.getSortOrder()) {
                    case ASC:
                        sliceStart = colStart.getStaticBuffer();
                        sliceEnd = colEnd.getStaticBuffer();
                        if (!interval.startInclusive())
                            sliceStart = BufferUtil.nextBiggerBuffer(sliceStart);
                        if (interval.endInclusive())
                            sliceEnd = BufferUtil.nextBiggerBuffer(sliceEnd);
                        break;
                    case DESC:
                        sliceEnd = colStart.getStaticBufferFlipBytes(keyStartPos, colStart.getPosition());
                        sliceStart = colEnd.getStaticBufferFlipBytes(keyStartPos, colEnd.getPosition());
                        if (interval.startInclusive())
                            sliceEnd = BufferUtil.nextBiggerBuffer(sliceEnd);
                        if (!interval.endInclusive())
                            sliceStart = BufferUtil.nextBiggerBuffer(sliceStart);
                        break;
                    default:
                        throw new AssertionError(type.getSortOrder().toString());
                }
                assert sliceStart.compareTo(sliceEnd) <= 0;
                break;
            }
        }
        if (sliceStart == null) {
            assert sliceEnd == null && colStart.getPosition() == colEnd.getPosition();
            if (keyEndPos < 0)
                keyEndPos = colStart.getPosition();
            switch(type.getSortOrder()) {
                case ASC:
                    sliceStart = colStart.getStaticBuffer();
                    break;
                case DESC:
                    sliceStart = colStart.getStaticBufferFlipBytes(keyStartPos, keyEndPos);
                    break;
                default:
                    throw new AssertionError(type.getSortOrder().toString());
            }
            sliceEnd = BufferUtil.nextBiggerBuffer(sliceStart);
        }
    }
    return new SliceQuery(sliceStart, sliceEnd, type.name());
}

Example 2 with DirectionID

use of org.janusgraph.graphdb.database.idhandling.IDHandler.DirectionID in project janusgraph by JanusGraph.

the class EdgeSerializer method writeRelation.

public StaticArrayEntry writeRelation(InternalRelation relation, InternalRelationType type, int position, TypeInspector tx) {
    assert type == relation.getType() || (type.getBaseType() != null && type.getBaseType().equals(relation.getType()));
    Direction dir = EdgeDirection.fromPosition(position);
    Preconditions.checkArgument(type.isUnidirected(Direction.BOTH) || type.isUnidirected(dir));
    long typeId = type.longId();
    DirectionID dirID = getDirID(dir, relation.isProperty() ? RelationCategory.PROPERTY : RelationCategory.EDGE);
    DataOutput out = serializer.getDataOutput(DEFAULT_CAPACITY);
    int valuePosition;
    IDHandler.writeRelationType(out, typeId, dirID, type.isInvisibleType());
    Multiplicity multiplicity = type.multiplicity();
    long[] sortKey = type.getSortKey();
    assert !multiplicity.isConstrained() || sortKey.length == 0 : type.name();
    int keyStartPos = out.getPosition();
    if (!multiplicity.isConstrained()) {
        writeInlineTypes(sortKey, relation, out, tx, InlineType.KEY);
    }
    int keyEndPos = out.getPosition();
    long relationId = relation.longId();
    // How multiplicity is handled for edges and properties is slightly different
    if (relation.isEdge()) {
        long otherVertexId = relation.getVertex((position + 1) % 2).longId();
        if (multiplicity.isConstrained()) {
            if (multiplicity.isUnique(dir)) {
                valuePosition = out.getPosition();
                VariableLong.writePositive(out, otherVertexId);
            } else {
                VariableLong.writePositiveBackward(out, otherVertexId);
                valuePosition = out.getPosition();
            }
            VariableLong.writePositive(out, relationId);
        } else {
            VariableLong.writePositiveBackward(out, otherVertexId);
            VariableLong.writePositiveBackward(out, relationId);
            valuePosition = out.getPosition();
        }
    } else {
        Preconditions.checkArgument(relation.isProperty(), "Given relation is not property");
        Object value = ((JanusGraphVertexProperty) relation).value();
        Preconditions.checkNotNull(value);
        PropertyKey key = (PropertyKey) type;
        assert key.dataType().isInstance(value);
        if (multiplicity.isConstrained()) {
            if (multiplicity.isUnique(dir)) {
                // Cardinality=SINGLE
                valuePosition = out.getPosition();
                writePropertyValue(out, key, value);
            } else {
                // Cardinality=SET
                writePropertyValue(out, key, value);
                valuePosition = out.getPosition();
            }
            VariableLong.writePositive(out, relationId);
        } else {
            assert multiplicity.getCardinality() == Cardinality.LIST;
            VariableLong.writePositiveBackward(out, relationId);
            valuePosition = out.getPosition();
            writePropertyValue(out, key, value);
        }
    }
    // Write signature
    long[] signature = type.getSignature();
    writeInlineTypes(signature, relation, out, tx, InlineType.SIGNATURE);
    // Write remaining properties
    LongSet writtenTypes = new LongHashSet(sortKey.length + signature.length);
    if (sortKey.length > 0 || signature.length > 0) {
        for (long id : sortKey) writtenTypes.add(id);
        for (long id : signature) writtenTypes.add(id);
    }
    LongArrayList remainingTypes = new LongArrayList(8);
    for (PropertyKey t : relation.getPropertyKeysDirect()) {
        if (!(t instanceof ImplicitKey) && !writtenTypes.contains(t.longId())) {
            remainingTypes.add(t.longId());
        }
    }
    // Sort types before writing to ensure that value is always written the same way
    long[] remaining = remainingTypes.toArray();
    Arrays.sort(remaining);
    for (long tid : remaining) {
        PropertyKey t = tx.getExistingPropertyKey(tid);
        writeInline(out, t, relation.getValueDirect(t), InlineType.NORMAL);
    }
    assert valuePosition > 0;
    return new StaticArrayEntry(type.getSortOrder() == Order.DESC ? out.getStaticBufferFlipBytes(keyStartPos, keyEndPos) : out.getStaticBuffer(), valuePosition);
}