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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.searchchain.model;
import com.yahoo.container.bundle.BundleInstantiationSpecification;
import com.yahoo.component.ComponentId;
import com.yahoo.component.ComponentSpecification;
import com.yahoo.component.chain.dependencies.Dependencies;
import com.yahoo.component.chain.model.ChainedComponentModel;
import com.yahoo.search.Searcher;
import com.yahoo.search.searchchain.model.federation.FederationSearcherModel;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
/**
* Defines the searcher models used in the vespa and native search chains, except for federation.
*
* @author Tony Vaagenes
*/
@SuppressWarnings({"rawtypes", "unchecked"})
public class VespaSearchers {
public static final Collection<ChainedComponentModel> vespaSearcherModels =
toSearcherModels(
com.yahoo.prelude.querytransform.PhrasingSearcher.class,
com.yahoo.prelude.searcher.FieldCollapsingSearcher.class,
com.yahoo.search.yql.MinimalQueryInserter.class,
com.yahoo.search.yql.FieldFilter.class,
com.yahoo.prelude.searcher.JuniperSearcher.class,
com.yahoo.prelude.searcher.BlendingSearcher.class,
com.yahoo.prelude.searcher.PosSearcher.class,
com.yahoo.prelude.semantics.SemanticSearcher.class,
com.yahoo.search.grouping.GroupingQueryParser.class,
com.yahoo.search.querytransform.WeakAndReplacementSearcher.class);
public static final Collection<ChainedComponentModel> nativeSearcherModels;
static {
nativeSearcherModels = new LinkedHashSet<>();
nativeSearcherModels.add(federationSearcherModel());
nativeSearcherModels.addAll(toSearcherModels(com.yahoo.prelude.statistics.StatisticsSearcher.class));
//ensure that searchers in the native search chain are not overridden by searchers in the vespa search chain,
//and that all component ids in each chain are unique.
assert(allComponentIdsDifferent(vespaSearcherModels, nativeSearcherModels));
}
private static boolean allComponentIdsDifferent(Collection<ChainedComponentModel> vespaSearcherModels,
Collection<ChainedComponentModel> nativeSearcherModels) {
Set<ComponentId> componentIds = new LinkedHashSet<>();
return
allAdded(vespaSearcherModels, componentIds) &&
allAdded(nativeSearcherModels, componentIds);
}
private static FederationSearcherModel federationSearcherModel() {
return new FederationSearcherModel(new ComponentSpecification("federation"),
Dependencies.emptyDependencies(),
Collections.emptyList(),
true);
}
private static boolean allAdded(Collection<ChainedComponentModel> searcherModels, Set<ComponentId> componentIds) {
for (ChainedComponentModel model : searcherModels) {
if (!componentIds.add(model.getComponentId()))
return false;
}
return true;
}
private static Collection<ChainedComponentModel> toSearcherModels(Class<? extends Searcher>... searchers) {
List<ChainedComponentModel> searcherModels = new ArrayList<>();
for (Class c : searchers) {
searcherModels.add(
new ChainedComponentModel(
BundleInstantiationSpecification.fromSearchAndDocproc(c.getName()),
Dependencies.emptyDependencies()));
}
return searcherModels;
}
}
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