Examples with BinaryEntry org.apache.hyracks.data.std.util.BinaryEntry used on opensource projects

Example 6 with BinaryEntry

use of org.apache.hyracks.data.std.util.BinaryEntry in project asterixdb by apache.

the class SimilarityJaccardEvaluator method probeHashMap.

protected int probeHashMap(AbstractAsterixListIterator probeIter, int buildListSize, int probeListSize) throws HyracksDataException {
    // Probe phase: Probe items from second list, and compute intersection size.
    int intersectionSize = 0;
    while (probeIter.hasNext()) {
        byte[] buf = probeIter.getData();
        int off = probeIter.getPos();
        int len = probeIter.getItemLen();
        keyEntry.set(buf, off, len);
        BinaryEntry entry = hashMap.get(keyEntry);
        if (entry != null) {
            // Increment second value.
            int firstValInt = IntegerPointable.getInteger(entry.getBuf(), entry.getOffset());
            // Irrelevant for the intersection size.
            if (firstValInt == 0) {
                continue;
            }
            int secondValInt = IntegerPointable.getInteger(entry.getBuf(), entry.getOffset() + 4);
            // Subtract old min value.
            intersectionSize -= (firstValInt < secondValInt) ? firstValInt : secondValInt;
            secondValInt++;
            // Add new min value.
            intersectionSize += (firstValInt < secondValInt) ? firstValInt : secondValInt;
            IntegerPointable.setInteger(entry.getBuf(), entry.getOffset() + 4, secondValInt);
        }
        probeIter.next();
    }
    return intersectionSize;
}

Example 7 with BinaryEntry

use of org.apache.hyracks.data.std.util.BinaryEntry in project asterixdb by apache.

the class SimilarityJaccardEvaluator method buildHashMap.

protected void buildHashMap(AbstractAsterixListIterator buildIter) throws HyracksDataException {
    // Build phase: Add items into hash map, starting with first list.
    // Value in map is a pair of integers. Set first integer to 1.
    IntegerPointable.setInteger(valEntry.getBuf(), 0, 1);
    while (buildIter.hasNext()) {
        byte[] buf = buildIter.getData();
        int off = buildIter.getPos();
        int len = buildIter.getItemLen();
        keyEntry.set(buf, off, len);
        BinaryEntry entry = hashMap.put(keyEntry, valEntry);
        if (entry != null) {
            // Increment value.
            int firstValInt = IntegerPointable.getInteger(entry.getBuf(), entry.getOffset());
            IntegerPointable.setInteger(entry.getBuf(), entry.getOffset(), firstValInt + 1);
        }
        buildIter.next();
    }
}