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

Field Summary

Fields

Modifier and Type	Field and Description
static String	NATIVE_SORT_SYSTEM_PROPERTY

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
org.apache.lucene.search.SortField[]	createSortFields(Ordering[] orderings, Session session)
protected QueryResult	execute(Column[] columns, Join join, Constraint constraint, Ordering[] orderings, long offset, long limit, int printIndentation)
protected QueryResult	execute(Column[] columns, Selector selector, Constraint constraint, Ordering[] orderings, long offset, long limit, int printIndentation)
QueryResult	execute(Column[] columns, Source source, Constraint constraint, Ordering[] orderings, long offset, long limit)
protected QueryResult	execute(Column[] columns, Source source, Constraint constraint, Ordering[] orderings, long offset, long limit, int printIndentation)
protected QueryResult	execute(org.apache.jackrabbit.core.query.lucene.join.JoinMerger merger, org.apache.jackrabbit.core.query.lucene.join.ConstraintSplitInfo csInfo, boolean isOuterJoin, int printIndentation)
protected static QueryResult	sort(QueryResult result, Ordering[] orderings, OperandEvaluator evaluator, 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

Field Detail

NATIVE_SORT_SYSTEM_PROPERTY

public static final String NATIVE_SORT_SYSTEM_PROPERTY

See Also:

Constant Field Values

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,
                              Source source,
                              Constraint constraint,
                              Ordering[] orderings,
                              long offset,
                              long limit,
                              int printIndentation)
                       throws RepositoryException

Throws:

RepositoryException

execute

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

Throws:

RepositoryException

execute

protected QueryResult execute(org.apache.jackrabbit.core.query.lucene.join.JoinMerger merger,
                              org.apache.jackrabbit.core.query.lucene.join.ConstraintSplitInfo csInfo,
                              boolean isOuterJoin,
                              int printIndentation)
                       throws RepositoryException

Throws:

RepositoryException

execute

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

Throws:

RepositoryException

createSortFields

public org.apache.lucene.search.SortField[] createSortFields(Ordering[] orderings,
                                                             Session session)
                                                      throws RepositoryException

Throws:

RepositoryException

sort

protected static QueryResult sort(QueryResult result,
                                  Ordering[] orderings,
                                  OperandEvaluator evaluator,
                                  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