Examples with Futures water.Futures used on opensource projects

Example 31 with Futures

use of water.Futures in project h2o-2 by h2oai.

the class RemoveVec method serve.

@Override
protected Response serve() {
    Futures fs = new Futures();
    for (Vec v : source.remove(cols)) v.remove(fs);
    DKV.put(source._key, source, fs);
    fs.blockForPending();
    return Inspect2.redirect(this, source._key.toString());
}

Example 32 with Futures

use of water.Futures in project h2o-3 by h2oai.

the class AstLevels method apply.

@Override
public ValFrame apply(Env env, Env.StackHelp stk, AstRoot[] asts) {
    Frame f = stk.track(asts[1].exec(env)).getFrame();
    Futures fs = new Futures();
    Key[] keys = Vec.VectorGroup.VG_LEN1.addVecs(f.numCols());
    Vec[] vecs = new Vec[keys.length];
    // compute the longest vec... that's the one with the most domain levels
    int max = 0;
    for (int i = 0; i < f.numCols(); ++i) if (f.vec(i).isCategorical())
        if (max < f.vec(i).domain().length)
            max = f.vec(i).domain().length;
    final int rowLayout = Vec.ESPC.rowLayout(keys[0], new long[] { 0, max });
    for (int i = 0; i < f.numCols(); ++i) {
        AppendableVec v = new AppendableVec(keys[i], Vec.T_NUM);
        NewChunk nc = new NewChunk(v, 0);
        String[] dom = f.vec(i).domain();
        int numToPad = dom == null ? max : max - dom.length;
        if (dom != null)
            for (int j = 0; j < dom.length; ++j) nc.addNum(j);
        for (int j = 0; j < numToPad; ++j) nc.addNA();
        nc.close(0, fs);
        vecs[i] = v.close(rowLayout, fs);
        vecs[i].setDomain(dom);
    }
    fs.blockForPending();
    Frame fr2 = new Frame(vecs);
    return new ValFrame(fr2);
}

Example 33 with Futures

use of water.Futures in project h2o-3 by h2oai.

the class AstSeq method apply.

@Override
public ValFrame apply(Env env, Env.StackHelp stk, AstRoot[] asts) {
    double from = asts[1].exec(env).getNum();
    double to = asts[2].exec(env).getNum();
    double by = asts[3].exec(env).getNum();
    double delta = to - from;
    if (delta == 0 && to == 0)
        throw new IllegalArgumentException("Expected `to` and `from` to have nonzero difference.");
    else {
        double n = delta / by;
        if (n < 0)
            throw new IllegalArgumentException("wrong sign in 'by' argument");
        else if (n > Double.MAX_VALUE)
            throw new IllegalArgumentException("'by' argument is much too small");
        Futures fs = new Futures();
        AppendableVec av = new AppendableVec(Vec.newKey(), Vec.T_NUM);
        NewChunk nc = new NewChunk(av, 0);
        int len = (int) n + 1;
        for (int r = 0; r < len; r++) nc.addNum(from + r * by);
        // May need to adjust values = by > 0 ? min(values, to) : max(values, to)
        nc.close(0, fs);
        Vec vec = av.layout_and_close(fs);
        fs.blockForPending();
        return new ValFrame(new Frame(vec));
    }
}

Example 34 with Futures

use of water.Futures in project h2o-3 by h2oai.

the class AstWhich method apply.

@Override
public ValFrame apply(Env env, Env.StackHelp stk, AstRoot[] asts) {
    Frame f = stk.track(asts[1].exec(env)).getFrame();
    // The 1-row version
    if (f.numRows() == 1 && f.numCols() > 1) {
        AppendableVec v = new AppendableVec(Vec.VectorGroup.VG_LEN1.addVec(), Vec.T_NUM);
        NewChunk chunk = new NewChunk(v, 0);
        for (int i = 0; i < f.numCols(); i++) if (f.vecs()[i].at8(0) != 0)
            chunk.addNum(i);
        Futures fs = chunk.close(0, new Futures());
        Vec vec = v.layout_and_close(fs);
        fs.blockForPending();
        return new ValFrame(new Frame(vec));
    }
    // The 1-column version
    Vec vec = f.anyVec();
    if (f.numCols() > 1 || !vec.isInt())
        throw new IllegalArgumentException("which requires a single integer column");
    Frame f2 = new MRTask() {

        @Override
        public void map(Chunk c, NewChunk nc) {
            long start = c.start();
            for (int i = 0; i < c._len; ++i) if (c.at8(i) != 0)
                nc.addNum(start + i);
        }
    }.doAll(new byte[] { Vec.T_NUM }, vec).outputFrame();
    return new ValFrame(f2);
}