Package com.atlassian.confluence.internal.index.lucene

Class LuceneSearchIndexAccessor

java.lang.Object

com.atlassian.confluence.internal.index.lucene.LuceneSearchIndexAccessor

All Implemented Interfaces:

SearchIndexAccessor

@Internal
public class LuceneSearchIndexAccessor
extends Object
implements SearchIndexAccessor

Since:

7.14

Constructor Summary

Constructors

Constructor	Description
LuceneSearchIndexAccessor(LuceneConnection luceneConnection, LuceneFieldVisitor luceneFieldVisitor, LuceneSearchMapper luceneSearchMapper)

Method Summary

Modifier and Type	Method	Description
void	close()
void	execute(SearchIndexAction action)	Executes a SearchIndexAction on the underlying search index.
int	numDocs()	Get the total number of index documents for the underlying search index
void	reset(Runnable replaceIndex)	Execute a method after the index has been closed and before the index has been reopened
long	scan(SearchQuery searchQuery, Set<String> requestedFields, Consumer<ScannedDocument> consumer, float defaultSCore)	Scans the index for documents that match the provided searchQuery.
long	scan(SearchQuery searchQuery, Set<String> requestedFields, Consumer<Map<String,String[]>> consumer)	Scans the index for documents that match the provided searchQuery.
SearchResults	search(ISearch search, Set<String> requestedFields)	Perform a search, the returned SearchResults only have the fields requested in the projection filled out, no other fields are valid in the searchResult.
void	snapshot(File destinationDirectory)	Take a snapshot of the current index and store it into the destination directory
void	withBatchUpdate(BatchUpdateAction batchUpdateAction)	Execute the update action in a batch.

Methods inherited from class java.lang.Object

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

Constructor Detail

LuceneSearchIndexAccessor

public LuceneSearchIndexAccessor(LuceneConnection luceneConnection,
                                 LuceneFieldVisitor luceneFieldVisitor,
                                 LuceneSearchMapper luceneSearchMapper)

Method Detail

search

public SearchResults search(ISearch search,
                            Set<String> requestedFields)
                     throws InvalidSearchException

Description copied from interface: SearchIndexAccessor

Perform a search, the returned SearchResults only have the fields requested in the projection filled out, no other fields are valid in the searchResult.

SearchResults will throw an FieldNotRequestedException if an attempt is made to access a field value that has not had it's key included in the projection Set.

NOTE: the search limit will be capped at SearchConstants.MAX_LIMIT and the startOffset will be capped at SearchConstants.MAX_START_OFFSET for more efficient heap usage. See SearchResults.getNextPageSearch() for pagination.

WARNING: there is no default permissions checking behaviour provided. You MUST provide a search which specifies permissions checking. See SiteSearchPermissionsQueryFactory to add one yourself. See PredefinedSearchBuilder to build a pre-defined search which contains permission checking.

Specified by:

search in interface SearchIndexAccessor

Parameters:

search - the search to perform.

requestedFields - requested fields. Passing null will request all fields, and passing empty set will request none.

Throws:

InvalidSearchException - if some error occurred converting the search object into * a search that could be performed in the back-end. Usually this is a sign that some plugin that was * used to create the search is no longer available.

See Also:

ISearch, SiteSearchPermissionsQueryFactory, SearchConstants.MAX_LIMIT, SearchConstants.MAX_START_OFFSET, SearchResults.getNextPageSearch(), PredefinedSearchBuilder

scan

public long scan(SearchQuery searchQuery,
                 Set<String> requestedFields,
                 Consumer<Map<String,String[]>> consumer)

Description copied from interface: SearchIndexAccessor

Scans the index for documents that match the provided searchQuery. The requestedFields set is used to specify which values need to be returned. The consumer will collect all the results found by the scan.

Note that it is possible for a document to match the query, but not have any of the requested fields. This will result in an empty String[] for those fields that don't exist on the document. If you don't want to return those documents, you should specify a consumer that filters these out.

WARNING: there is no default permissions checking behaviour provided. You MUST provide a search which specifies permissions checking. See SiteSearchPermissionsQueryFactory to add one yourself. See PredefinedSearchBuilder to build a pre-defined search which contains permission checking.

Specified by:

scan in interface SearchIndexAccessor

Parameters:

searchQuery - SearchQuery to scan the index for.

requestedFields - Set of field names that are requested from the index. Any fields provided here that is not on the document will return an empty String[] Passing null will request all fields, and passing empty set will request none.

consumer - Consumer that handles each found document.

Returns:

the number of documents that matched the searchQuery.

See Also:

SiteSearchPermissionsQueryFactory, PredefinedSearchBuilder

scan

public long scan(SearchQuery searchQuery,
                 Set<String> requestedFields,
                 Consumer<ScannedDocument> consumer,
                 float defaultSCore)

Description copied from interface: SearchIndexAccessor

Scans the index for documents that match the provided searchQuery. The requestedFields set is used to specify which values need to be returned. The consumer will collect all the results found by the scan and convert them into ScannedDocument, which contains a score (if scoreIncluded is true) and a field-value map of the requested fields.

Note that it is possible for a document to match the query, but not have any of the requested fields as the other scan method.

This will result in an empty String[] for those fields that don't exist on the document. If you don't want to return those documents, you should specify a consumer that filters these out.

WARNING: there is no default permissions checking behaviour provided. You MUST provide a search which specifies permissions checking. See SiteSearchPermissionsQueryFactory to add one yourself. See PredefinedSearchBuilder to build a pre-defined search which contains permission checking.

Specified by:

scan in interface SearchIndexAccessor

Parameters:

searchQuery - SearchQuery to scan the index for.

requestedFields - Set of field names that are requested from the index. Any fields provided here that is not on the document will return an empty String[] Passing null will request all fields, and passing empty set will request none.

consumer - Consumer that handles each found document.

defaultSCore - a default score to be included in the ScannedDocument if it is not possible to retrieve the score for the document.

Returns:

the number of documents that matched the searchQuery.

See Also:

SiteSearchPermissionsQueryFactory, PredefinedSearchBuilder

execute

public void execute(SearchIndexAction action)
             throws SearchIndexAccessException

Description copied from interface: SearchIndexAccessor

Executes a SearchIndexAction on the underlying search index.

Specified by:

execute in interface SearchIndexAccessor

Parameters:

action - SearchIndexAction

Throws:

SearchIndexAccessException - if there is an io error.

numDocs

public int numDocs()
            throws SearchIndexAccessException

Description copied from interface: SearchIndexAccessor

Get the total number of index documents for the underlying search index

Specified by:

numDocs in interface SearchIndexAccessor

Returns:

the total number of index documents

Throws:

SearchIndexAccessException

withBatchUpdate

public void withBatchUpdate(BatchUpdateAction batchUpdateAction)

Description copied from interface: SearchIndexAccessor

Execute the update action in a batch. Executions are transactional, reads can't see any writes made and the index will be locked for updating by other threads. Currently, there is no rollback when the transaction fails for any reason. This is a bug which will be investigated in future.

Specified by:

withBatchUpdate in interface SearchIndexAccessor

Parameters:

batchUpdateAction - the batch update action

snapshot

public void snapshot(File destinationDirectory)
              throws SearchIndexAccessException

Description copied from interface: SearchIndexAccessor

Take a snapshot of the current index and store it into the destination directory

Specified by:

snapshot in interface SearchIndexAccessor

Parameters:

destinationDirectory - the destination directory

Throws:

SearchIndexAccessException - if the snapshot could not be taken

reset

public void reset(Runnable replaceIndex)

Description copied from interface: SearchIndexAccessor

Execute a method after the index has been closed and before the index has been reopened

Specified by:

reset in interface SearchIndexAccessor

Parameters:

replaceIndex - the method that needs to be executed

close

public void close()