org.apache.jackrabbit.core.query.lucene
Class SearchIndex.CombinedIndexReader

java.lang.Object
  org.apache.lucene.index.IndexReader
      org.apache.lucene.index.MultiReader
          org.apache.jackrabbit.core.query.lucene.SearchIndex.CombinedIndexReader

All Implemented Interfaces:

HierarchyResolver, MultiIndexReader, ReleaseableIndexReader

Enclosing class:

SearchIndex

protected static final class SearchIndex.CombinedIndexReader
extends org.apache.lucene.index.MultiReader
implements HierarchyResolver, MultiIndexReader

Combines multiple CachingMultiIndexReader into a MultiReader with HierarchyResolver support.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.index.IndexReader

org.apache.lucene.index.IndexReader.FieldOption

Field Summary

Fields inherited from class org.apache.lucene.index.IndexReader

hasChanges

Constructor Summary

SearchIndex.CombinedIndexReader(CachingMultiIndexReader[] indexReaders)

Method Summary

org.apache.jackrabbit.core.query.lucene.ForeignSegmentDocId	createDocId(UUID uuid) Creates a document id for the given uuid.
boolean	equals(Object obj)
int	getDocumentNumber(org.apache.jackrabbit.core.query.lucene.ForeignSegmentDocId docId) Returns the document number for the passed docId.
org.apache.lucene.index.IndexReader[]	getIndexReaders()
int	getParent(int n) Returns the document number of the parent of n or -1 if n does not have a parent (n is the root node).
int	hashCode()
void	release() Releases this index reader and potentially frees resources.

Methods inherited from class org.apache.lucene.index.MultiReader

docFreq, doClose, doCommit, document, doDelete, doSetNorm, doUndeleteAll, getFieldNames, getTermFreqVector, getTermFreqVector, getTermFreqVector, getTermFreqVectors, getVersion, hasDeletions, hasNorms, isCurrent, isDeleted, isOptimized, maxDoc, norms, norms, numDocs, reopen, termDocs, termPositions, terms, terms

Methods inherited from class org.apache.lucene.index.IndexReader

acquireWriteLock, close, commit, decRef, deleteDocument, deleteDocuments, directory, document, ensureOpen, flush, getCurrentVersion, getCurrentVersion, getCurrentVersion, getTermInfosIndexDivisor, incRef, indexExists, indexExists, indexExists, isLocked, isLocked, lastModified, lastModified, lastModified, main, open, open, open, open, setNorm, setNorm, setTermInfosIndexDivisor, termDocs, termPositions, undeleteAll, unlock

Methods inherited from class java.lang.Object

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

Constructor Detail

SearchIndex.CombinedIndexReader

public SearchIndex.CombinedIndexReader(CachingMultiIndexReader[] indexReaders)

Method Detail

getParent

public int getParent(int n)
              throws IOException

Description copied from interface: HierarchyResolver

Returns the document number of the parent of n or -1 if n does not have a parent (n is the root node).

Specified by:

getParent in interface HierarchyResolver

Parameters:

n - the document number.

Returns:

the document number of n's parent.

Throws:

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

getIndexReaders

public org.apache.lucene.index.IndexReader[] getIndexReaders()

Specified by:

getIndexReaders in interface MultiIndexReader

Returns:

the IndexReaders that are contained in this MultiIndexReader.

release

public void release()
             throws IOException

Releases this index reader and potentially frees resources. In contrast to IndexReader.close() this method does not necessarily close the index reader, but gives the implementation the opportunity to do reference counting.

Specified by:

release in interface ReleaseableIndexReader

Throws:

IOException - if an error occurs while releasing the index reader.

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

createDocId

public org.apache.jackrabbit.core.query.lucene.ForeignSegmentDocId createDocId(UUID uuid)
                                                                        throws IOException

Creates a document id for the given uuid.

Specified by:

createDocId in interface MultiIndexReader

Parameters:

uuid - the uuid of the node.

Returns:

a foreign segment doc id or null if there is no node with the given uuid.

Throws:

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

getDocumentNumber

public int getDocumentNumber(org.apache.jackrabbit.core.query.lucene.ForeignSegmentDocId docId)

Returns the document number for the passed docId. If the id is invalid -1 is returned.

Specified by:

getDocumentNumber in interface MultiIndexReader

Parameters:

docId - the document id to resolve.

Returns:

the document number or -1 if it is invalid (e.g. does not exist).