Examples with Values org.neo4j.values.storable.Values used on opensource projects

Example 6 with Values

use of org.neo4j.values.storable.Values in project neo4j by neo4j.

the class NativeIndexAccessorTests method getValues.

@Test
void getValues() throws IndexEntryConflictException, IndexNotApplicableKernelException {
    // given
    int nUpdates = 10000;
    Iterator<ValueIndexEntryUpdate<IndexDescriptor>> randomUpdateGenerator = valueCreatorUtil.randomUpdateGenerator(random);
    // noinspection unchecked
    ValueIndexEntryUpdate<IndexDescriptor>[] someUpdates = new ValueIndexEntryUpdate[nUpdates];
    for (int i = 0; i < nUpdates; i++) {
        someUpdates[i] = randomUpdateGenerator.next();
    }
    processAll(someUpdates);
    Value[] allValues = ValueCreatorUtil.extractValuesFromUpdates(someUpdates);
    // Pick one out of all added values and do a range query for the value group of that value
    Value value = random.among(allValues);
    ValueGroup valueGroup = value.valueGroup();
    IndexValueCapability valueCapability = indexCapability().valueCapability(valueGroup.category());
    if (!valueCapability.equals(IndexValueCapability.YES)) {
        // We don't need to do this test
        return;
    }
    PropertyIndexQuery.RangePredicate<?> supportedQuery;
    List<Value> expectedValues;
    if (Values.isGeometryValue(value)) {
        // Unless it's a point value in which case we query for the specific coordinate reference system instead
        CoordinateReferenceSystem crs = ((PointValue) value).getCoordinateReferenceSystem();
        supportedQuery = PropertyIndexQuery.range(0, crs);
        expectedValues = Arrays.stream(allValues).filter(v -> v.valueGroup() == ValueGroup.GEOMETRY).filter(v -> ((PointValue) v).getCoordinateReferenceSystem() == crs).collect(Collectors.toList());
    } else {
        supportedQuery = PropertyIndexQuery.range(0, valueGroup);
        expectedValues = Arrays.stream(allValues).filter(v -> v.valueGroup() == valueGroup).collect(Collectors.toList());
    }
    // when
    try (var reader = accessor.newValueReader()) {
        SimpleEntityValueClient client = new SimpleEntityValueClient();
        reader.query(NULL_CONTEXT, client, unorderedValues(), supportedQuery);
        // then
        while (client.next()) {
            Value foundValue = client.values[0];
            assertTrue(expectedValues.remove(foundValue), "found value that was not expected " + foundValue);
        }
        assertThat(expectedValues.size()).as("did not find all expected values").isEqualTo(0);
    }
}