Examples with MaxAggregator org.elasticsearch.search.aggregations.metrics.max.MaxAggregator used on opensource projects

Example 1 with MaxAggregator

use of org.elasticsearch.search.aggregations.metrics.max.MaxAggregator in project elasticsearch by elastic.

the class MaxAggregatorTests method testCase.

private void testCase(Query query, CheckedConsumer<RandomIndexWriter, IOException> buildIndex, Consumer<InternalMax> verify) throws IOException {
    Directory directory = newDirectory();
    RandomIndexWriter indexWriter = new RandomIndexWriter(random(), directory);
    buildIndex.accept(indexWriter);
    indexWriter.close();
    IndexReader indexReader = DirectoryReader.open(directory);
    IndexSearcher indexSearcher = newSearcher(indexReader, true, true);
    MaxAggregationBuilder aggregationBuilder = new MaxAggregationBuilder("_name").field("number");
    MappedFieldType fieldType = new NumberFieldMapper.NumberFieldType(NumberFieldMapper.NumberType.LONG);
    fieldType.setName("number");
    try (MaxAggregator aggregator = createAggregator(aggregationBuilder, indexSearcher, fieldType)) {
        aggregator.preCollection();
        indexSearcher.search(query, aggregator);
        aggregator.postCollection();
        verify.accept((InternalMax) aggregator.buildAggregation(0L));
    }
    indexReader.close();
    directory.close();
}