Examples with EdgeLabel com.baidu.hugegraph.schema.EdgeLabel used on opensource projects

Example 31 with EdgeLabel

use of com.baidu.hugegraph.schema.EdgeLabel in project incubator-hugegraph by apache.

the class StandardHugeGraph method edgeLabel.

@Override
public EdgeLabel edgeLabel(String name) {
    EdgeLabel el = this.schemaTransaction().getEdgeLabel(name);
    E.checkArgument(el != null, "Undefined edge label: '%s'", name);
    return el;
}

Example 32 with EdgeLabel

use of com.baidu.hugegraph.schema.EdgeLabel in project incubator-hugegraph by apache.

the class HugeGraph method mapElName2Id.

default Id[] mapElName2Id(String[] edgeLabels) {
    Id[] ids = new Id[edgeLabels.length];
    for (int i = 0; i < edgeLabels.length; i++) {
        EdgeLabel edgeLabel = this.edgeLabel(edgeLabels[i]);
        ids[i] = edgeLabel.id();
    }
    return ids;
}

Example 33 with EdgeLabel

use of com.baidu.hugegraph.schema.EdgeLabel in project incubator-hugegraph by apache.

the class RelationshipManager method queryRelationship.

private Iterator<Edge> queryRelationship(Id source, Directions direction, String label, Map<String, Object> conditions, long limit) {
    ConditionQuery query = new ConditionQuery(HugeType.EDGE);
    EdgeLabel el = this.graph().edgeLabel(label);
    if (direction == null) {
        direction = Directions.OUT;
    }
    if (source != null) {
        query.eq(HugeKeys.OWNER_VERTEX, source);
        query.eq(HugeKeys.DIRECTION, direction);
    }
    if (label != null) {
        query.eq(HugeKeys.LABEL, el.id());
    }
    for (Map.Entry<String, Object> entry : conditions.entrySet()) {
        PropertyKey pk = this.graph().propertyKey(entry.getKey());
        query.query(Condition.eq(pk.id(), entry.getValue()));
    }
    query.showHidden(true);
    if (limit != NO_LIMIT) {
        query.limit(limit);
    }
    Iterator<Edge> edges = this.tx().queryEdges(query);
    if (limit == NO_LIMIT) {
        return edges;
    }
    long[] size = new long[1];
    return new MapperIterator<>(edges, edge -> {
        if (++size[0] > limit) {
            return null;
        }
        return edge;
    });
}

Example 34 with EdgeLabel

use of com.baidu.hugegraph.schema.EdgeLabel in project incubator-hugegraph by apache.

the class TextSerializer method parseEdge.

/**
 * Parse an edge from a column item
 */
private void parseEdge(String colName, String colValue, HugeVertex vertex) {
    String[] colParts = EdgeId.split(colName);
    HugeGraph graph = vertex.graph();
    boolean direction = colParts[0].equals(EDGE_OUT_TYPE);
    String sortValues = readEdgeName(colParts[2]);
    EdgeLabel edgeLabel = graph.edgeLabelOrNone(readId(colParts[1]));
    Id otherVertexId = readEntryId(colParts[3]);
    // Construct edge
    HugeEdge edge = HugeEdge.constructEdge(vertex, direction, edgeLabel, sortValues, otherVertexId);
    String[] valParts = colValue.split(VALUE_SPLITOR);
    // Parse edge expired time
    String name = this.formatSyspropName(HugeKeys.EXPIRED_TIME);
    E.checkState(valParts[1].equals(name), "Invalid system property name '%s'", valParts[1]);
    edge.expiredTime(JsonUtil.fromJson(valParts[2], Long.class));
    // Edge properties
    for (int i = 3; i < valParts.length; i += 2) {
        this.parseProperty(valParts[i], valParts[i + 1], edge);
    }
}

Example 35 with EdgeLabel

use of com.baidu.hugegraph.schema.EdgeLabel in project incubator-hugegraph by apache.

the class BinarySerializer method parseEdge.

protected void parseEdge(BackendColumn col, HugeVertex vertex, HugeGraph graph) {
    // owner-vertex + dir + edge-label + sort-values + other-vertex
    BytesBuffer buffer = BytesBuffer.wrap(col.name);
    if (this.keyWithIdPrefix) {
        // Consume owner-vertex id
        buffer.readId();
    }
    byte type = buffer.read();
    Id labelId = buffer.readId();
    String sortValues = buffer.readStringWithEnding();
    Id otherVertexId = buffer.readId();
    boolean direction = EdgeId.isOutDirectionFromCode(type);
    EdgeLabel edgeLabel = graph.edgeLabelOrNone(labelId);
    // Construct edge
    HugeEdge edge = HugeEdge.constructEdge(vertex, direction, edgeLabel, sortValues, otherVertexId);
    // Parse edge-id + edge-properties
    buffer = BytesBuffer.wrap(col.value);
    // Id id = buffer.readId();
    // Parse edge properties
    this.parseProperties(buffer, edge);
    // Parse edge expired time if needed
    if (edge.hasTtl()) {
        this.parseExpiredTime(buffer, edge);
    }
}