Examples with LongDecimalWithOverflowAndLongState com.facebook.presto.operator.aggregation.state.LongDecimalWithOverflowAndLongState used on opensource projects

Example 1 with LongDecimalWithOverflowAndLongState

use of com.facebook.presto.operator.aggregation.state.LongDecimalWithOverflowAndLongState in project presto by prestodb.

the class TestDecimalAverageAggregation method testCombineUnderflow.

@Test
public void testCombineUnderflow() {
    addToState(state, TWO.pow(125).negate());
    addToState(state, TWO.pow(126).negate());
    LongDecimalWithOverflowAndLongState otherState = new LongDecimalWithOverflowAndLongStateFactory().createSingleState();
    addToState(otherState, TWO.pow(125).negate());
    addToState(otherState, TWO.pow(126).negate());
    DecimalAverageAggregation.combine(state, otherState);
    assertEquals(state.getLong(), 4);
    assertEquals(state.getOverflow(), -1);
    assertEquals(state.getLongDecimal(), unscaledDecimal(TWO.pow(126).negate()));
    BigInteger expectedAverage = BigInteger.ZERO.add(TWO.pow(126)).add(TWO.pow(126)).add(TWO.pow(125)).add(TWO.pow(125)).negate().divide(BigInteger.valueOf(4));
    assertEquals(average(state, TYPE), new BigDecimal(expectedAverage));
}

Example 2 with LongDecimalWithOverflowAndLongState

use of com.facebook.presto.operator.aggregation.state.LongDecimalWithOverflowAndLongState in project presto by prestodb.

the class TestDecimalAverageAggregation method testCombineOverflow.

@Test
public void testCombineOverflow() {
    addToState(state, TWO.pow(125));
    addToState(state, TWO.pow(126));
    LongDecimalWithOverflowAndLongState otherState = new LongDecimalWithOverflowAndLongStateFactory().createSingleState();
    addToState(otherState, TWO.pow(125));
    addToState(otherState, TWO.pow(126));
    DecimalAverageAggregation.combine(state, otherState);
    assertEquals(state.getLong(), 4);
    assertEquals(state.getOverflow(), 1);
    assertEquals(state.getLongDecimal(), unscaledDecimal(TWO.pow(126)));
    BigInteger expectedAverage = BigInteger.ZERO.add(TWO.pow(126)).add(TWO.pow(126)).add(TWO.pow(125)).add(TWO.pow(125)).divide(BigInteger.valueOf(4));
    assertEquals(average(state, TYPE), new BigDecimal(expectedAverage));
}