Examples with Memory org.apache.datasketches.memory.Memory used on opensource projects

Example 81 with Memory

use of org.apache.datasketches.memory.Memory in project sketches-core by DataSketches.

the class ItemsSketchTest method checkGoodSerDeId.

@Test
public void checkGoodSerDeId() {
    final ItemsSketch<String> sketch = ItemsSketch.getInstance(Comparator.naturalOrder());
    final byte[] byteArr = sketch.toByteArray(new ArrayOfStringsSerDe());
    final Memory mem = Memory.wrap(byteArr);
    // println(PreambleUtil.toString(mem));
    ItemsSketch.getInstance(mem, Comparator.naturalOrder(), new ArrayOfStringsSerDe());
}

Example 82 with Memory

use of org.apache.datasketches.memory.Memory in project sketches-core by DataSketches.

the class ReadOnlyMemoryTest method wrapUnionFromSparse.

@Test
public void wrapUnionFromSparse() {
    UpdateDoublesSketch s1 = DoublesSketch.builder().build();
    s1.update(1);
    s1.update(2);
    Memory mem = Memory.wrap(s1.toByteArray(false));
    DoublesUnion u = DoublesUnion.wrap(mem);
    DoublesSketch s2 = u.getResult();
    Assert.assertEquals(s2.getMinValue(), 1.0);
    Assert.assertEquals(s2.getMaxValue(), 2.0);
    // ensure update and reset methods fail
    try {
        u.update(3);
        fail();
    } catch (SketchesReadOnlyException e) {
    // expected
    }
    try {
        u.update(s2);
        fail();
    } catch (SketchesReadOnlyException e) {
    // expected
    }
    try {
        u.update(mem);
        fail();
    } catch (SketchesReadOnlyException e) {
    // expected
    }
    try {
        u.reset();
        fail();
    } catch (SketchesReadOnlyException e) {
    // expected
    }
    try {
        u.getResultAndReset();
        fail();
    } catch (SketchesReadOnlyException e) {
    // expected
    }
}

Example 83 with Memory

use of org.apache.datasketches.memory.Memory in project sketches-core by DataSketches.

the class ReadOnlyMemoryTest method wrapEmptyCompactSketch.

@Test
public void wrapEmptyCompactSketch() {
    final UpdateDoublesSketch s1 = DoublesSketch.builder().build();
    final Memory mem = Memory.wrap(s1.compact().toByteArray());
    // compact, so this is ok
    DoublesSketch s2 = DoublesSketch.wrap(mem);
    Assert.assertTrue(s2.isEmpty());
}

Example 84 with Memory

use of org.apache.datasketches.memory.Memory in project sketches-core by DataSketches.

the class ReadOnlyMemoryTest method heapifyAndUpdateSparseSketch.

@Test
public void heapifyAndUpdateSparseSketch() {
    UpdateDoublesSketch s1 = DoublesSketch.builder().build();
    s1.update(1);
    s1.update(2);
    Memory mem = Memory.wrap(s1.toByteArray(false));
    UpdateDoublesSketch s2 = (UpdateDoublesSketch) DoublesSketch.heapify(mem);
    s2.update(3);
    Assert.assertEquals(s2.getMinValue(), 1.0);
    Assert.assertEquals(s2.getMaxValue(), 3.0);
}

Example 85 with Memory

use of org.apache.datasketches.memory.Memory in project sketches-core by DataSketches.

the class ReadOnlyMemoryTest method wrapEmptyUpdateSketch.

@Test
public void wrapEmptyUpdateSketch() {
    final UpdateDoublesSketch s1 = DoublesSketch.builder().build();
    final Memory mem = Memory.wrap(s1.toByteArray());
    UpdateDoublesSketch s2 = (UpdateDoublesSketch) DoublesSketch.wrap(mem);
    Assert.assertTrue(s2.isEmpty());
    // ensure the various put calls fail
    try {
        s2.putMinValue(-1.0);
        fail();
    } catch (final SketchesReadOnlyException e) {
    // expected
    }
    try {
        s2.putMaxValue(1.0);
        fail();
    } catch (final SketchesReadOnlyException e) {
    // expected
    }
    try {
        s2.putN(1);
        fail();
    } catch (final SketchesReadOnlyException e) {
    // expected
    }
    try {
        s2.putBitPattern(1);
        fail();
    } catch (final SketchesReadOnlyException e) {
    // expected
    }
    try {
        s2.reset();
        fail();
    } catch (final SketchesReadOnlyException e) {
    // expected
    }
    try {
        s2.putBaseBufferCount(5);
        fail();
    } catch (final SketchesReadOnlyException e) {
    // expected
    }
    try {
        s2.putCombinedBuffer(new double[16]);
        fail();
    } catch (final SketchesReadOnlyException e) {
    // expected
    }
    try {
        final int currCap = s2.getCombinedBufferItemCapacity();
        s2.growCombinedBuffer(currCap, 2 * currCap);
        fail();
    } catch (final SketchesReadOnlyException e) {
    // expected
    }
}