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

Example 6 with Relation

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

the class CassandraTable method relation2Cql.

protected Clause relation2Cql(Relation relation) {
    String key = relation.serialKey().toString();
    Object value = relation.serialValue();
    switch(relation.relation()) {
        case EQ:
            return QueryBuilder.eq(key, value);
        case GT:
            return QueryBuilder.gt(key, value);
        case GTE:
            return QueryBuilder.gte(key, value);
        case LT:
            return QueryBuilder.lt(key, value);
        case LTE:
            return QueryBuilder.lte(key, value);
        case IN:
            return Clauses.in(key, (List<?>) value);
        case CONTAINS_VALUE:
            return QueryBuilder.contains(key, value);
        case CONTAINS_KEY:
            return QueryBuilder.containsKey(key, value);
        case SCAN:
            String[] col = pkColumnName().stream().map(pk -> formatKey(pk)).toArray(String[]::new);
            Shard shard = (Shard) value;
            Object start = QueryBuilder.raw(shard.start());
            Object end = QueryBuilder.raw(shard.end());
            return Clauses.and(QueryBuilder.gte(QueryBuilder.token(col), start), QueryBuilder.lt(QueryBuilder.token(col), end));
        // return QueryBuilder.like(key, value);
        case NEQ:
        default:
            throw new NotSupportException("relation '%s'", relation);
    }
}

Example 7 with Relation

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

the class ConditionQuery method query.

public ConditionQuery query(Condition condition) {
    // Query by id (HugeGraph-259)
    if (condition instanceof Relation) {
        Relation relation = (Relation) condition;
        if (relation.key().equals(HugeKeys.ID) && relation.relation() == RelationType.EQ) {
            E.checkArgument(relation.value() instanceof Id, "Invalid id value '%s'", relation.value());
            super.query((Id) relation.value());
            return this;
        }
    }
    if (this.conditions == EMPTY_CONDITIONS) {
        this.conditions = InsertionOrderUtil.newList();
    }
    this.conditions.add(condition);
    return this;
}

Example 8 with Relation

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

the class ConditionQuery method userpropKeys.

public Set<Id> userpropKeys() {
    Set<Id> keys = new LinkedHashSet<>();
    for (Relation r : this.relations()) {
        if (!r.isSysprop()) {
            Condition.UserpropRelation ur = (Condition.UserpropRelation) r;
            keys.add(ur.key());
        }
    }
    return keys;
}

Example 9 with Relation

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

the class ConditionQuery method userpropValuesString.

/**
 * This method is only used for secondary index scenario,
 * its relation must be EQ
 * @param fields the user property fields
 * @return the corresponding user property serial values of fields
 */
public String userpropValuesString(List<Id> fields) {
    List<Object> values = new ArrayList<>(fields.size());
    for (Id field : fields) {
        boolean got = false;
        for (Relation r : this.userpropRelations()) {
            if (r.key().equals(field) && !r.isSysprop()) {
                E.checkState(r.relation == RelationType.EQ || r.relation == RelationType.CONTAINS, "Method userpropValues(List<String>) only " + "used for secondary index, " + "relation must be EQ or CONTAINS, but got %s", r.relation());
                values.add(r.serialValue());
                got = true;
            }
        }
        if (!got) {
            throw new BackendException("No such userprop named '%s' in the query '%s'", field, this);
        }
    }
    return concatValues(values);
}

Example 10 with Relation

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

the class HbaseTable method queryByCond.

protected <R> R queryByCond(HbaseSession<R> session, ConditionQuery query) {
    if (query.containsScanRelation()) {
        E.checkArgument(query.relations().size() == 1, "Invalid scan with multi conditions: %s", query);
        Relation scan = query.relations().iterator().next();
        Shard shard = (Shard) scan.value();
        return this.queryByRange(session, shard, query.page());
    }
    throw new NotSupportException("query: %s", query);
}