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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.prelude.cluster;
import com.yahoo.prelude.IndexFacts;
import com.yahoo.prelude.fastsearch.DocumentdbInfoConfig;
import com.yahoo.search.Query;
import com.yahoo.search.searchchain.Execution;
import java.util.Collection;
import java.util.LinkedHashSet;
import java.util.Set;
/**
* Resolves schemas from query and execution context
*
* @author bjorncs
*/
class SchemaResolver {
private final Set<String> schemas;
SchemaResolver(DocumentdbInfoConfig cfg) {
this(cfg.documentdb().stream().map(DocumentdbInfoConfig.Documentdb::name).toList());
}
SchemaResolver(Collection<String> schemas) {
this.schemas = new LinkedHashSet<>(schemas);
}
Set<String> resolve(Query query, Execution execution) {
return resolve(query, execution.context().getIndexFacts());
}
Set<String> resolve(Query query, IndexFacts indexFacts) {
if (schemas.size() == 1) return Set.of(schemas.iterator().next());
var restrict = query.getModel().getRestrict();
if (restrict == null || restrict.isEmpty()) {
Set<String> sources = query.getModel().getSources();
return (sources == null || sources.isEmpty())
? schemas
: new LinkedHashSet<>(indexFacts.newSession(sources, Set.of(), schemas).documentTypes());
} else {
return filterValidDocumentTypes(restrict);
}
}
private Set<String> filterValidDocumentTypes(Collection<String> restrict) {
Set<String> retval = new LinkedHashSet<>();
for (String docType : restrict) {
if (docType != null && schemas.contains(docType)) {
retval.add(docType);
}
}
return retval;
}
}
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