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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.grouping.result;
import com.yahoo.component.ComponentId;
import com.yahoo.component.chain.dependencies.After;
import com.yahoo.document.GlobalId;
import com.yahoo.prelude.fastsearch.FastHit;
import com.yahoo.prelude.fastsearch.GroupingListHit;
import com.yahoo.search.Query;
import com.yahoo.search.Result;
import com.yahoo.search.Searcher;
import com.yahoo.search.grouping.GroupingRequest;
import com.yahoo.search.grouping.request.GroupingOperation;
import com.yahoo.search.grouping.vespa.GroupingExecutor;
import com.yahoo.search.result.Hit;
import com.yahoo.search.result.HitGroup;
import com.yahoo.search.searchchain.Execution;
import com.yahoo.search.searchchain.SearchChain;
import com.yahoo.searchlib.aggregation.FS4Hit;
import com.yahoo.searchlib.aggregation.Group;
import com.yahoo.searchlib.aggregation.Grouping;
import com.yahoo.searchlib.aggregation.HitsAggregationResult;
import com.yahoo.searchlib.expression.StringResultNode;
import org.junit.Test;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import java.util.Queue;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* @author bratseth
*/
public class FlatteningSearcherTestCase {
@Test
public void testFlatteningSearcher() {
Query query = new Query("?query=test");
GroupingRequest req = GroupingRequest.newInstance(query);
req.setRootOperation(GroupingOperation.fromString("all(group(foo) each(each(output(summary(bar)))))"));
Grouping group0 = new Grouping(0);
group0.setRoot(new com.yahoo.searchlib.aggregation.Group()
.addChild(new Group().setId(new StringResultNode("unique1"))
.addAggregationResult(new HitsAggregationResult(3, "bar")
)
)
.addChild(new Group().setId(new StringResultNode("unique2"))
.addAggregationResult(new HitsAggregationResult(3, "bar")
)
));
Grouping group1 = new Grouping(0);
group1.setRoot(new com.yahoo.searchlib.aggregation.Group()
.addChild(new Group().setId(new StringResultNode("unique1"))
.addAggregationResult(new HitsAggregationResult(3, "bar")
.addHit(fs4Hit(0.7))
.addHit(fs4Hit(0.6))
.addHit(fs4Hit(0.3))
)
)
.addChild(new Group().setId(new StringResultNode("unique2"))
.addAggregationResult(new HitsAggregationResult(3, "bar")
.addHit(fs4Hit(0.5))
.addHit(fs4Hit(0.4))
)
));
Execution execution = newExecution(new FlatteningSearcher(),
new GroupingExecutor(ComponentId.fromString("grouping")),
new ResultProvider(Arrays.asList(
new GroupingListHit(List.of(group0), null),
new GroupingListHit(List.of(group1), null))));
Result result = execution.search(query);
assertEquals(5, result.hits().size());
assertFlat(result);
}
private void assertFlat(Result result) {
for (var hit : result.hits())
assertTrue(hit instanceof FastHit);
}
private FS4Hit fs4Hit(double relevance) {
return new FS4Hit(0, new GlobalId(new byte[GlobalId.LENGTH]), relevance);
}
private void dump(Hit hit, String indent) {
System.out.println(indent + hit);
if (hit instanceof HitGroup) {
for (var child : (HitGroup)hit)
dump(child, indent + " ");
}
}
private static Execution newExecution(Searcher... searchers) {
return new Execution(new SearchChain(new ComponentId("foo"), Arrays.asList(searchers)),
Execution.Context.createContextStub());
}
@After (GroupingExecutor.COMPONENT_NAME)
private static class ResultProvider extends Searcher {
final Queue<GroupingListHit> hits = new LinkedList<>();
int pass = 0;
ResultProvider(List<GroupingListHit> hits) {
this.hits.addAll(hits);
}
@Override
public Result search(Query query, Execution exec) {
GroupingListHit hit = hits.poll();
for (Grouping group : hit.getGroupingList()) {
group.setFirstLevel(pass);
group.setLastLevel(pass);
}
++pass;
Result result = exec.search(query);
result.hits().add(hit);
return result;
}
}
}
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