Examples with ConditionQuery com.baidu.hugegraph.backend.query.ConditionQuery used on opensource projects

Example 31 with ConditionQuery

use of com.baidu.hugegraph.backend.query.ConditionQuery in project incubator-hugegraph by apache.

the class EdgesAPI method scan.

@GET
@Timed
@Path("scan")
@Compress
@Produces(APPLICATION_JSON_WITH_CHARSET)
public String scan(@Context GraphManager manager, @PathParam("graph") String graph, @QueryParam("start") String start, @QueryParam("end") String end, @QueryParam("page") String page, @QueryParam("page_limit") @DefaultValue(DEFAULT_PAGE_LIMIT) long pageLimit) {
    LOG.debug("Graph [{}] query edges by shard(start: {}, end: {}, " + "page: {}) ", graph, start, end, page);
    HugeGraph g = graph(manager, graph);
    ConditionQuery query = new ConditionQuery(HugeType.EDGE_OUT);
    query.scan(start, end);
    query.page(page);
    if (query.paging()) {
        query.limit(pageLimit);
    }
    Iterator<Edge> edges = g.edges(query);
    return manager.serializer(g).writeEdges(edges, query.paging());
}

Example 32 with ConditionQuery

use of com.baidu.hugegraph.backend.query.ConditionQuery in project incubator-hugegraph by apache.

the class EntityManager method queryEntity.

private Iterator<Vertex> queryEntity(String label, Map<String, Object> conditions, long limit) {
    ConditionQuery query = new ConditionQuery(HugeType.VERTEX);
    VertexLabel vl = this.graph().vertexLabel(label);
    query.eq(HugeKeys.LABEL, vl.id());
    for (Map.Entry<String, Object> entry : conditions.entrySet()) {
        PropertyKey pkey = this.graph().propertyKey(entry.getKey());
        query.query(Condition.eq(pkey.id(), entry.getValue()));
    }
    query.showHidden(true);
    if (limit != NO_LIMIT) {
        query.limit(limit);
    }
    return this.tx().queryVertices(query);
}

Example 33 with ConditionQuery

use of com.baidu.hugegraph.backend.query.ConditionQuery 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 ConditionQuery

use of com.baidu.hugegraph.backend.query.ConditionQuery in project incubator-hugegraph by apache.

the class TextSerializer method writeQueryCondition.

@Override
protected Query writeQueryCondition(Query query) {
    ConditionQuery result = (ConditionQuery) query;
    // No user-prop when serialize
    assert result.allSysprop();
    for (Condition.Relation r : result.relations()) {
        // Serialize key
        if (query.resultType().isSchema()) {
            r.serialKey(((HugeKeys) r.key()).string());
        } else {
            r.serialKey(formatSyspropName((HugeKeys) r.key()));
        }
        if (r.value() instanceof Id) {
            // Serialize id value
            r.serialValue(writeId((Id) r.value()));
        } else {
            // Serialize other type value
            r.serialValue(JsonUtil.toJson(r.value()));
        }
        if (r.relation() == Condition.RelationType.CONTAINS_KEY) {
            // Serialize has-key
            String key = (String) r.serialValue();
            r.serialValue(formatPropertyName(key));
        }
    }
    return result;
}

Example 35 with ConditionQuery

use of com.baidu.hugegraph.backend.query.ConditionQuery in project incubator-hugegraph by apache.

the class BinarySerializer method writeQueryCondition.

@Override
protected Query writeQueryCondition(Query query) {
    HugeType type = query.resultType();
    if (!type.isIndex()) {
        return query;
    }
    ConditionQuery cq = (ConditionQuery) query;
    if (type.isNumericIndex()) {
        // Convert range-index/shard-index query to id range query
        return this.writeRangeIndexQuery(cq);
    } else {
        assert type.isSearchIndex() || type.isSecondaryIndex() || type.isUniqueIndex();
        // Convert secondary-index or search-index query to id query
        return this.writeStringIndexQuery(cq);
    }
}