Examples with RyaRange org.apache.rya.api.domain.RyaRange used on opensource projects

Example 6 with RyaRange

use of org.apache.rya.api.domain.RyaRange in project incubator-rya by apache.

the class SpoWholeRowTriplePatternStrategy method defineRange.

@Override
public Map.Entry<TABLE_LAYOUT, ByteRange> defineRange(final RyaURI subject, final RyaURI predicate, final RyaType object, final RyaURI context, final RdfCloudTripleStoreConfiguration conf) throws IOException {
    try {
        // s_r(p)(ng)
        if (!handles(subject, predicate, object, context)) {
            return null;
        }
        final RyaContext ryaContext = RyaContext.getInstance();
        final TABLE_LAYOUT table_layout = TABLE_LAYOUT.SPO;
        byte[] start;
        byte[] stop;
        if (predicate != null) {
            if (object != null) {
                if (object instanceof RyaRange) {
                    // sp_r(o)
                    // range = sp_r(o.s)->sp_r(o.e) (remove last byte to remove type info)
                    RyaRange rv = (RyaRange) object;
                    rv = ryaContext.transformRange(rv);
                    final byte[] objStartBytes = ryaContext.serializeType(rv.getStart())[0];
                    final byte[] objEndBytes = ryaContext.serializeType(rv.getStop())[0];
                    final byte[] subjBytes = subject.getData().getBytes(StandardCharsets.UTF_8);
                    final byte[] predBytes = predicate.getData().getBytes(StandardCharsets.UTF_8);
                    start = Bytes.concat(subjBytes, DELIM_BYTES, predBytes, DELIM_BYTES, objStartBytes);
                    stop = Bytes.concat(subjBytes, DELIM_BYTES, predBytes, DELIM_BYTES, objEndBytes, DELIM_BYTES, LAST_BYTES);
                } else {
                    // spo
                    // range = spo->spo (remove last byte to remove type info)
                    // TODO: There must be a better way than creating multiple byte[]
                    final byte[] objBytes = ryaContext.serializeType(object)[0];
                    start = Bytes.concat(subject.getData().getBytes(StandardCharsets.UTF_8), DELIM_BYTES, predicate.getData().getBytes(StandardCharsets.UTF_8), DELIM_BYTES, objBytes, TYPE_DELIM_BYTES);
                    stop = Bytes.concat(start, LAST_BYTES);
                }
            } else if (predicate instanceof RyaRange) {
                // s_r(p)
                // range = s_r(p.s)->s_r(p.e)
                RyaRange rv = (RyaRange) predicate;
                rv = ryaContext.transformRange(rv);
                final byte[] subjBytes = subject.getData().getBytes(StandardCharsets.UTF_8);
                final byte[] predStartBytes = rv.getStart().getData().getBytes(StandardCharsets.UTF_8);
                final byte[] predStopBytes = rv.getStop().getData().getBytes(StandardCharsets.UTF_8);
                start = Bytes.concat(subjBytes, DELIM_BYTES, predStartBytes);
                stop = Bytes.concat(subjBytes, DELIM_BYTES, predStopBytes, DELIM_BYTES, LAST_BYTES);
            } else {
                // sp
                // range = sp
                start = Bytes.concat(subject.getData().getBytes(StandardCharsets.UTF_8), DELIM_BYTES, predicate.getData().getBytes(StandardCharsets.UTF_8), DELIM_BYTES);
                stop = Bytes.concat(start, LAST_BYTES);
            }
        } else if (subject instanceof RyaRange) {
            // r(s)
            // range = r(s.s) -> r(s.e)
            RyaRange ru = (RyaRange) subject;
            ru = ryaContext.transformRange(ru);
            start = ru.getStart().getData().getBytes(StandardCharsets.UTF_8);
            stop = Bytes.concat(ru.getStop().getData().getBytes(StandardCharsets.UTF_8), DELIM_BYTES, LAST_BYTES);
        } else {
            // s
            // range = s
            start = Bytes.concat(subject.getData().getBytes(StandardCharsets.UTF_8), DELIM_BYTES);
            stop = Bytes.concat(start, LAST_BYTES);
        }
        return new RdfCloudTripleStoreUtils.CustomEntry<TABLE_LAYOUT, ByteRange>(table_layout, new ByteRange(start, stop));
    } catch (final RyaTypeResolverException e) {
        throw new IOException(e);
    }
}