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Allow filtering of top-ratings list by recency of play.

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git-svn-id: svn+ssh://src.earth.threerings.net/vilya/trunk@737 c613c5cb-e716-0410-b11b-feb51c14d237
This commit is contained in:
Michael Bayne
2008-09-02 19:34:54 +00:00
parent 8868835220
commit 24455b4ab8
1 changed files with 20 additions and 15 deletions
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src/java/com/threerings/parlor/rating/server/persist/RatingRepository.java
+20 -15
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@@ -28,8 +28,9 @@ import java.util.Collections;
import java.util.List; import java.util.List;
import java.util.Set; import java.util.Set;
import com.google.inject.Singleton; import com.google.common.collect.Lists;
import com.google.inject.Inject; import com.google.inject.Inject;
import com.google.inject.Singleton;
import com.samskivert.io.PersistenceException; import com.samskivert.io.PersistenceException;
import com.samskivert.util.IntSet; import com.samskivert.util.IntSet;
@@ -110,31 +111,35 @@ public class RatingRepository extends DepotRepository
clauses.add(new Limit(0, count)); clauses.add(new Limit(0, count));
} }
clauses.add(OrderBy.descending(RatingRecord.LAST_UPDATED_C)); clauses.add(OrderBy.descending(RatingRecord.LAST_UPDATED_C));
return findAll(RatingRecord.class, clauses.toArray(new QueryClause[clauses.size()])); return findAll(RatingRecord.class, clauses);
} }
/** /**
* Returns the top-ratings for the specified game. Players with equal rating will be sorted * Returns the top-ratings for the specified game. Players with equal rating will be sorted
* most recently played first. * most recently played first.
* *
* @param since an absolute number of milliseconds (ie. 10*24*60*60*1000L). Players that have
* not updated their rating within this many milliseconds in the past will be omitted from the
* results. Supply zero to omit this filter.
* @param playerIds an optional list of player ids to which to limit the top-rankings search. * @param playerIds an optional list of player ids to which to limit the top-rankings search.
*/ */
public List<RatingRecord> getTopRatings (int gameId, int limit, IntSet playerIds) public List<RatingRecord> getTopRatings (int gameId, int limit, long since, IntSet playerIds)
throws PersistenceException throws PersistenceException
{ {
ArrayList<QueryClause> clauses = new ArrayList<QueryClause>(); List<SQLExpression> where = Lists.newArrayList();
if (playerIds == null) { where.add(new Equals(RatingRecord.GAME_ID_C, gameId));
clauses.add(new Where(RatingRecord.GAME_ID_C, gameId)); if (since > 0L) {
} else { where.add(new GreaterThan(RatingRecord.LAST_UPDATED_C,
Integer[] pids = playerIds.toArray(new Integer[playerIds.size()]); new Timestamp(System.currentTimeMillis() - since)));
clauses.add(new Where(new And(new Equals(RatingRecord.GAME_ID_C, gameId),
new In(RatingRecord.PLAYER_ID_C, pids))));
} }
clauses.add(new Limit(0, limit)); if (playerIds != null) {
clauses.add(new OrderBy( where.add(new In(RatingRecord.PLAYER_ID_C, playerIds));
new SQLExpression[] { RatingRecord.RATING_C, RatingRecord.LAST_UPDATED_C }, }
new OrderBy.Order[] { OrderBy.Order.DESC, OrderBy.Order.DESC }));
return findAll(RatingRecord.class, clauses.toArray(new QueryClause[clauses.size()])); OrderBy ob = new OrderBy(
new SQLExpression[] { RatingRecord.RATING_C, RatingRecord.LAST_UPDATED_C },
new OrderBy.Order[] { OrderBy.Order.DESC, OrderBy.Order.DESC });
return findAll(RatingRecord.class, new Where(new And(where)), new Limit(0, limit), ob);
} }
/** /**