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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.query.profile;
import com.yahoo.component.ComponentSpecification;
import com.yahoo.component.provider.ComponentRegistry;
import com.yahoo.search.query.profile.compiled.CompiledQueryProfileRegistry;
import com.yahoo.search.query.profile.types.QueryProfileType;
import com.yahoo.search.query.profile.types.QueryProfileTypeRegistry;
/**
* A set of query profiles. This also holds the query profile types as a dependent registry
*
* @author bratseth
*/
public class QueryProfileRegistry extends ComponentRegistry<QueryProfile> {
private QueryProfileTypeRegistry queryProfileTypeRegistry = new QueryProfileTypeRegistry();
/** Register this type by its id */
public void register(QueryProfile profile) {
super.register(profile.getId(), profile);
}
/** Returns a query profile type by name, or null if not found */
public QueryProfileType getType(String type) {
return queryProfileTypeRegistry.getComponent(type);
}
/** Returns the type registry attached to this */
public QueryProfileTypeRegistry getTypeRegistry() { return queryProfileTypeRegistry; }
/**
* <p>Returns a query profile for the given request string, or null if a suitable one is not found.</p>
*
* The request string must be a valid {@link com.yahoo.component.ComponentId} or null.
*
* <p>
* If the string is null, the profile named "default" is returned, or null if that does not exists.
*
* <p>
* The version part (if any) is matched used the usual component version patching rules.
* If the name part matches a query profile name perfectly, that profile is returned.
* If not, and the name is a slash-separated path, the profile with the longest matching left sub-path
* which has a type which allows path mahting is used. If there is no such profile, null is returned.
*/
public QueryProfile findQueryProfile(String idString) {
if (idString==null) return getComponent("default");
ComponentSpecification id=new ComponentSpecification(idString);
QueryProfile profile=getComponent(id);
if (profile!=null) return profile;
return findPathParentQueryProfile(new ComponentSpecification(idString));
}
private QueryProfile findPathParentQueryProfile(ComponentSpecification id) {
// Try the name with "/" appended - should have the same semantics with path matching
QueryProfile slashedProfile=getComponent(new ComponentSpecification(id.getName() + "/",id.getVersionSpecification()));
if (slashedProfile!=null && slashedProfile.getType()!=null && slashedProfile.getType().getMatchAsPath())
return slashedProfile;
// Extract the parent (if any)
int slashIndex=id.getName().lastIndexOf("/");
if (slashIndex<1) return null;
String parentName=id.getName().substring(0,slashIndex);
ComponentSpecification parentId=new ComponentSpecification(parentName,id.getVersionSpecification());
QueryProfile pathParentProfile=getComponent(parentId);
if (pathParentProfile!=null && pathParentProfile.getType()!=null && pathParentProfile.getType().getMatchAsPath())
return pathParentProfile;
return findPathParentQueryProfile(parentId);
}
/** Freezes this, and all owned query profiles and query profile types */
@Override
public void freeze() {
if (isFrozen()) return;
queryProfileTypeRegistry.freeze();
for (QueryProfile queryProfile : allComponents())
queryProfile.freeze();
}
public CompiledQueryProfileRegistry compile() { return QueryProfileCompiler.compile(this); }
}
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