org.apache.jackrabbit.core.query.lucene.join
Class QueryEngine

java.lang.Object
  org.apache.jackrabbit.core.query.lucene.join.QueryEngine

public class QueryEngine
extends Object

Constructor Summary

QueryEngine(Session session, LuceneQueryFactory lqf, Map<String,Value> variables)

Method Summary

protected QueryResult	execute(Column[] columns, Join join, Constraint constraint, Ordering[] orderings, long offset, long limit)
protected QueryResult	execute(Column[] columns, Selector selector, Constraint constraint, Ordering[] orderings, long offset, long limit)
QueryResult	execute(Column[] columns, Source source, Constraint constraint, Ordering[] orderings, long offset, long limit)
QueryResult	sort(QueryResult result, Ordering[] orderings, long offset, long limit) Sorts the given query results according to the given QOM orderings.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

QueryEngine

public QueryEngine(Session session,
                   LuceneQueryFactory lqf,
                   Map<String,Value> variables)
            throws RepositoryException

Throws:

RepositoryException

Method Detail

execute

public QueryResult execute(Column[] columns,
                           Source source,
                           Constraint constraint,
                           Ordering[] orderings,
                           long offset,
                           long limit)
                    throws RepositoryException

Throws:

RepositoryException

execute

protected QueryResult execute(Column[] columns,
                              Join join,
                              Constraint constraint,
                              Ordering[] orderings,
                              long offset,
                              long limit)
                       throws RepositoryException

Throws:

RepositoryException

execute

protected QueryResult execute(Column[] columns,
                              Selector selector,
                              Constraint constraint,
                              Ordering[] orderings,
                              long offset,
                              long limit)
                       throws RepositoryException

Throws:

RepositoryException

sort

public QueryResult sort(QueryResult result,
                        Ordering[] orderings,
                        long offset,
                        long limit)
                 throws RepositoryException

Sorts the given query results according to the given QOM orderings. If one or more orderings have been specified, this method will iterate through the entire original result set, order the collected rows, and return a new result set based on the sorted collection of rows.

Parameters:

result - original query results

orderings - QOM orderings

offset - result offset

limit - result limit

Returns:

sorted query results

Throws:

RepositoryException - if the results can not be sorted