Java DoubleWritable.get方法代码示例

import org.apache.hadoop.hive.serde2.io.DoubleWritable; //导入方法依赖的package包/类
public boolean iterate(@Nullable DoubleWritable o) {
    if (o == null) {
        return true;
    }
    if (partial == null) {
        this.partial = new PartialResult();
        partial.init();
    }
    double w = o.get();
    if (w > 0) {
        partial.positiveSum += w;
        partial.positiveCnt++;
    } else if (w < 0) {
        partial.negativeSum += w;
        partial.negativeCnt++;
    }
    return true;
}
 

import org.apache.hadoop.hive.serde2.io.DoubleWritable; //导入方法依赖的package包/类
public static double asJavaDouble(@Nullable final Object o) {
    if (o == null) {
        throw new IllegalArgumentException();
    }
    if (o instanceof Double) {
        return ((Double) o).doubleValue();
    }
    if (o instanceof LazyDouble) {
        DoubleWritable d = ((LazyDouble) o).getWritableObject();
        return d.get();
    }
    if (o instanceof DoubleWritable) {
        return ((DoubleWritable) o).get();
    }
    String s = o.toString();
    return Double.parseDouble(s);
}
 

import org.apache.hadoop.hive.serde2.io.DoubleWritable; //导入方法依赖的package包/类
private static double evalPredict(RegressionTree tree, double[] x) throws HiveException,
        IOException {
    String opScript = tree.predictOpCodegen(StackMachine.SEP);
    debugPrint(opScript);

    TreePredictUDFv1 udf = new TreePredictUDFv1();
    udf.initialize(new ObjectInspector[] {
            PrimitiveObjectInspectorFactory.javaStringObjectInspector,
            PrimitiveObjectInspectorFactory.javaIntObjectInspector,
            PrimitiveObjectInspectorFactory.javaStringObjectInspector,
            ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaDoubleObjectInspector),
            ObjectInspectorUtils.getConstantObjectInspector(
                PrimitiveObjectInspectorFactory.javaBooleanObjectInspector, false)});
    DeferredObject[] arguments = new DeferredObject[] {new DeferredJavaObject("model_id#1"),
            new DeferredJavaObject(ModelType.opscode.getId()),
            new DeferredJavaObject(opScript), new DeferredJavaObject(ArrayUtils.toList(x)),
            new DeferredJavaObject(false)};

    DoubleWritable result = (DoubleWritable) udf.evaluate(arguments);
    udf.close();
    return result.get();
}
 

import org.apache.hadoop.hive.serde2.io.DoubleWritable; //导入方法依赖的package包/类
private static double evalPredict(RegressionTree tree, double[] x) throws HiveException,
        IOException {
    byte[] b = tree.serialize(true);
    byte[] encoded = Base91.encode(b);
    Text model = new Text(encoded);

    TreePredictUDF udf = new TreePredictUDF();
    udf.initialize(new ObjectInspector[] {
            PrimitiveObjectInspectorFactory.javaStringObjectInspector,
            PrimitiveObjectInspectorFactory.writableStringObjectInspector,
            ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaDoubleObjectInspector),
            ObjectInspectorUtils.getConstantObjectInspector(
                PrimitiveObjectInspectorFactory.javaBooleanObjectInspector, false)});
    DeferredObject[] arguments = new DeferredObject[] {new DeferredJavaObject("model_id#1"),
            new DeferredJavaObject(model), new DeferredJavaObject(ArrayUtils.toList(x)),
            new DeferredJavaObject(false)};

    DoubleWritable result = (DoubleWritable) udf.evaluate(arguments);
    udf.close();
    return result.get();
}
 

import org.apache.hadoop.hive.serde2.io.DoubleWritable; //导入方法依赖的package包/类
@Nonnull
public DoubleWritable evaluate(@Nullable List<FloatWritable> Pu,
        @Nullable List<FloatWritable> Qi, @Nullable DoubleWritable mu) throws HiveException {
    final double muValue = (mu == null) ? 0.d : mu.get();
    if (Pu == null || Qi == null) {
        return new DoubleWritable(muValue);
    }

    final int PuSize = Pu.size();
    final int QiSize = Qi.size();
    // workaround for TD
    if (PuSize == 0) {
        return new DoubleWritable(muValue);
    } else if (QiSize == 0) {
        return new DoubleWritable(muValue);
    }

    if (QiSize != PuSize) {
        throw new HiveException("|Pu| " + PuSize + " was not equal to |Qi| " + QiSize);
    }

    double ret = muValue;
    for (int k = 0; k < PuSize; k++) {
        FloatWritable Pu_k = Pu.get(k);
        if (Pu_k == null) {
            continue;
        }
        FloatWritable Qi_k = Qi.get(k);
        if (Qi_k == null) {
            continue;
        }
        ret += Pu_k.get() * Qi_k.get();
    }
    return new DoubleWritable(ret);
}
 

import org.apache.hadoop.hive.serde2.io.DoubleWritable; //导入方法依赖的package包/类
@Override
public void merge(@SuppressWarnings("deprecation") AggregationBuffer agg, Object partial)
        throws HiveException {
    if (partial == null) {
        return;
    }

    AggrBuffer aggr = (AggrBuffer) agg;
    DoubleWritable other = (DoubleWritable) partial;
    double v = other.get();
    aggr.merge(v);
}