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// Copyright 2019 Oath Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.searchchain;
import com.yahoo.component.AbstractComponent;
import com.yahoo.component.chain.Chain;
import com.yahoo.component.chain.ChainsConfigurer;
import com.yahoo.component.chain.model.ChainsModel;
import com.yahoo.component.chain.model.ChainsModelBuilder;
import com.yahoo.component.provider.ComponentRegistry;
import com.yahoo.container.QrSearchersConfig;
import com.yahoo.container.core.ChainsConfig;
import com.yahoo.language.Linguistics;
import com.yahoo.prelude.IndexFacts;
import com.yahoo.prelude.IndexModel;
import com.yahoo.prelude.query.parser.SpecialTokenRegistry;
import com.yahoo.processing.rendering.Renderer;
import com.yahoo.search.Searcher;
import com.yahoo.search.config.IndexInfoConfig;
import com.yahoo.search.rendering.RendererRegistry;
import com.yahoo.vespa.configdefinition.SpecialtokensConfig;
/**
* Provides creation of fully configured query Execution instances.
* Have an instance of this injected if you need to execute queries which are not initiated from
* an external request.
*
* @author bratseth
*/
public class ExecutionFactory extends AbstractComponent {
private final SearchChainRegistry searchChainRegistry;
private final IndexFacts indexFacts;
private final SpecialTokenRegistry specialTokens;
private final Linguistics linguistics;
private final RendererRegistry rendererRegistry;
public ExecutionFactory(ChainsConfig chainsConfig,
IndexInfoConfig indexInfo,
QrSearchersConfig clusters,
ComponentRegistry<Searcher> searchers,
SpecialtokensConfig specialTokens,
Linguistics linguistics,
ComponentRegistry<Renderer> renderers) {
this.searchChainRegistry = createSearchChainRegistry(searchers, chainsConfig);
this.indexFacts = new IndexFacts(new IndexModel(indexInfo, clusters)).freeze();
this.specialTokens = new SpecialTokenRegistry(specialTokens);
this.linguistics = linguistics;
this.rendererRegistry = new RendererRegistry(renderers.allComponents());
}
private SearchChainRegistry createSearchChainRegistry(ComponentRegistry<Searcher> searchers, ChainsConfig chainsConfig) {
SearchChainRegistry searchChainRegistry = new SearchChainRegistry(searchers);
ChainsModel chainsModel = ChainsModelBuilder.buildFromConfig(chainsConfig);
ChainsConfigurer.prepareChainRegistry(searchChainRegistry, chainsModel, searchers);
searchChainRegistry.freeze();
return searchChainRegistry;
}
/**
* Creates a new execution starting at a search chain.
* An execution instance should be used once to execute a (tree of) search chains.
*/
public Execution newExecution(Chain<? extends Searcher> searchChain) {
return new Execution(searchChain,
new Execution.Context(searchChainRegistry, indexFacts, specialTokens, rendererRegistry, linguistics));
}
/** Returns the search chain registry used by this */
public SearchChainRegistry searchChainRegistry() { return searchChainRegistry; }
/** Returns the renderers known to this */
public RendererRegistry rendererRegistry() { return rendererRegistry; }
@Override
public void deconstruct() {
rendererRegistry.deconstruct();
}
}
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