org.apache.jackrabbit.core.query.lucene
Class SharedFieldSortComparator

java.lang.Object
  org.apache.lucene.search.SortComparator
      org.apache.jackrabbit.core.query.lucene.SharedFieldSortComparator

All Implemented Interfaces:

Serializable, org.apache.lucene.search.SortComparatorSource

public class SharedFieldSortComparator
extends org.apache.lucene.search.SortComparator

Implements a SortComparator which knows how to sort on a lucene field that contains values for multiple properties.

See Also:

Serialized Form

Constructor Summary

SharedFieldSortComparator(String fieldname, ItemStateManager ism, HierarchyManager hmgr, NamespaceMappings nsMappings)
Creates a new SharedFieldSortComparator for a given shared field.

Method Summary

protected Comparable	getComparable(String termtext)
org.apache.lucene.search.ScoreDocComparator	newComparator(org.apache.lucene.index.IndexReader reader, String relPath) Creates a new ScoreDocComparator for an embedded propertyName and a reader.

Methods inherited from class java.lang.Object

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

Constructor Detail

SharedFieldSortComparator

public SharedFieldSortComparator(String fieldname,
                                 ItemStateManager ism,
                                 HierarchyManager hmgr,
                                 NamespaceMappings nsMappings)

Creates a new SharedFieldSortComparator for a given shared field.

Parameters:

fieldname - the shared field.

ism - the item state manager of this workspace.

hmgr - the hierarchy manager of this workspace.

nsMappings - the index internal namespace mappings.

Method Detail

newComparator

public org.apache.lucene.search.ScoreDocComparator newComparator(org.apache.lucene.index.IndexReader reader,
                                                                 String relPath)
                                                          throws IOException

Creates a new ScoreDocComparator for an embedded propertyName and a reader.

Specified by:

newComparator in interface org.apache.lucene.search.SortComparatorSource

Overrides:

newComparator in class org.apache.lucene.search.SortComparator

Parameters:

reader - the index reader.

relPath - the relative path to the property to sort on as returned by Path.getString().

Returns:

a ScoreDocComparator for the

Throws:

IOException - if an error occurs while reading from the index.

getComparable

protected Comparable getComparable(String termtext)

Specified by:

getComparable in class org.apache.lucene.search.SortComparator

Throws:

UnsupportedOperationException - always.