com.jalios.jcms.search
Class LuceneCategorySearchEngine

java.lang.Object
  com.jalios.jcms.search.LuceneDataSearchEngine
      com.jalios.jcms.search.LuceneCategorySearchEngine

All Implemented Interfaces:

JcmsConstants, CategorySearchEngine, JaliosConstants

public class LuceneCategorySearchEngine
extends LuceneDataSearchEngine
implements CategorySearchEngine, JcmsConstants

This CategorySearchEngine is reponsible for the indexing and searching of JCMS content using lucene.

Architecture and notable points:

1 lucene index per language: WEB-INF/data/lucene/CategoriesIndices/<lang>/.

1 Document per indexed Category.

Indices' optimization occurs using schedule specified by property "search-engine.optimize-schedule" (jdring's AlarmEntry cron-like format)

Possible Hooks/Modification:

Specify analyzer for each language: Analyzer getAnalyzer(String lang);

Specify boost for each Document, in each language: LuceneSearchEnginePolicyFilter.getCategoryBoost(Category, String, float)

Specify boost for each Document'Field, in each language: LuceneSearchEnginePolicyFilter.getFieldBoost(Category, String, String, String, float)

Since:

jcms-5.5.0

Version:

$Revision: 27753 $

Author:

Olivier Jaquemet

Nested Class Summary

Nested classes/interfaces inherited from class com.jalios.jcms.search.LuceneDataSearchEngine

LuceneDataSearchEngine.MultiSearcherWrapper

Field Summary

protected static String	CATEGORY_INDEX_DIRECTORY
static String	DESCRIPTION_FIELD
static String	MATCHED_CATEGORIES_ATTRIBUTE This variable is the attribute's key used by the LuceneCategorySearchEngine to set the matched categories HashSet in the QueryResultSet Attribute.
static String	NAME_FIELD
static String	REVISION
static String	SYNONYMS_FIELD

Fields inherited from class com.jalios.jcms.search.LuceneDataSearchEngine

alarmMgr, channel, directoryName, ID_FIELD, indexAccessLock, INDEXING_DATE_EXTRAINFO, INDEXING_DATE_FIELD, langList, langToIndexDirMap, MAX_BUFFERED_DOCS, MAX_FIELD_LENGTH, MAX_MERGE_DOCS, MERGE_FACTOR

Fields inherited from interface com.jalios.jcms.JcmsConstants

ADATE_SEARCH, ADMIN_NOTES_PROP, ADVANCED_TAB, ARCHIVES_DIR, ASCII_WIDTH, CATEGORY_TAB, CDATE_SEARCH, COMMON_ALARM, CONTENT_TAB, COOKIE_MAX_AGE, CRYPT_MD5, CRYPT_UNDEFINED, CRYPT_UNIX, CTRL_TOPIC_INTERNAL, CTRL_TOPIC_REF, CTRL_TOPIC_VALUE, CTRL_TOPIC_WRITE, CUSTOM_PROP, DOCCHOOSER_HEIGHT, DOCCHOOSER_WIDTH, DOCS_DIR, EDATE_SEARCH, EMAIL_REGEXP, ERROR_MSG, FORBIDDEN_FILE_ACCESS, FORBIDDEN_REDIRECT, FORCE_REDIRECT, ICON_ARCHIVE, ICON_LOCK, ICON_LOCK_STRONG, ICON_WARN, ICON_WH_BOOK_CLOSED, ICON_WH_BOOK_OPEN, INFORMATION_MSG, JALIOS_JUNIT_PROP, JCMS_CADDY, JCMS_MSG_LIST, JSYNC_DOWNLOAD_DIR, JSYNC_SYNC_ALARM, LOG_FILE, LOG_TOPIC_SECURITY, LOGGER_PROP, LOGGER_XMLPROP, MBR_PHOTO_DIR, MDATE_SEARCH, MONITOR_XML, OP_CREATE, OP_DEEP_COPY, OP_DEEP_DELETE, OP_DELETE, OP_MERGE, OP_UPDATE, PDATE_SEARCH, PHOTO_DIR, PHOTO_ICON, PHOTO_ICON_HEIGHT, PHOTO_ICON_WIDTH, PHOTO_LARGE, PHOTO_LARGE_HEIGHT, PHOTO_LARGE_WIDTH, PHOTO_NORMAL, PHOTO_NORMAL_HEIGHT, PHOTO_NORMAL_WIDTH, PHOTO_SMALL, PHOTO_SMALL_HEIGHT, PHOTO_SMALL_WIDTH, PHOTO_TINY, PHOTO_TINY_HEIGHT, PHOTO_TINY_WIDTH, PREVIOUS_TAB, PRINT_VIEW, PRIVATE_FILE_ACCESS, PUBLIC_FILE_ACCESS, READ_RIGHT_TAB, SDATE_SEARCH, SEARCHENGINE_ALARM, SESSION_AUTHORIZED_FILENAMES_SET, STATS_REPORT_DIR, STATUS_PROP, STORE_XML, TEMPLATE_TAB, THUMBNAIL_LARGE_HEIGHT, THUMBNAIL_LARGE_WIDTH, THUMBNAIL_SMALL_HEIGHT, THUMBNAIL_SMALL_WIDTH, UDATE_SEARCH, UPDATE_RIGHT_TAB, UPLOAD_DIR, URL_REGEXP, WARNING_MSG, WEBAPP_PROP, WFEXPRESS_ALARM, WFREMINDER_ALARM, WORKFLOW_TAB, WORKFLOW_XML

Fields inherited from interface com.jalios.util.JaliosConstants

CRLF, MILLIS_IN_ONE_DAY, MILLIS_IN_ONE_HOUR, MILLIS_IN_ONE_MINUTE, MILLIS_IN_ONE_MONTH, MILLIS_IN_ONE_SECOND, MILLIS_IN_ONE_WEEK, MILLIS_IN_ONE_YEAR

Constructor Summary

LuceneCategorySearchEngine()
Initialize the Lucene Search Engine

Method Summary

void	add(Category cat) Add given Category to this lucene search engine.
void	add(Collection<Category> coll) Add given Collection of Category to this lucene search engine.
protected void	addKeywordField(org.apache.lucene.document.Document doc, Category cat, String lang, String fieldName, String fieldValue, boolean applyBoost) This methods create a unstored Lucene Field with the given field's value of the given Category in the given language, and add into the given Document.
protected void	addUnStoredField(org.apache.lucene.document.Document doc, Category cat, String lang, String fieldName, String fieldValue, boolean applyBoost) This methods create a unstored Lucene Field with the given field's value of the given Category in the given language, and add into the given Document.
void	clearAll() Clear indices in this searchEngine (undoable!).
void	delete(Category cat) Delete given Category from this lucene search engine.
void	delete(Collection<Category> coll) Delete given Collection of Category from this lucene search engine.
protected com.jalios.jcms.search.LuceneDataSearchEngine.DataIterator<Data>	getAllDataIterator() This methods must be implemented by the LuceneSearchEngine.
Date	getIndexingDate(Category cat) Retrieve the Date at which the specified Category was indexed in the search engine.
protected org.apache.log4j.Logger	getLogger() This methods must be implemented by the LuceneSearchEngine.
protected void	indexData(org.apache.lucene.index.IndexWriter writer, Data data, String lang) This methods index the given Category in the given language, into the given index writer.
boolean	search(QueryHandler qh, HashSet<? extends Publication> pubSet, QueryResultSet resultSet) Perform a full-text search.
void	update(Category cat) Update given Category in this lucene search engine.
void	update(Collection<Category> coll) Update given Collection of Category in this lucene search engine.

Methods inherited from class com.jalios.jcms.search.LuceneDataSearchEngine

addData, addDataCollection, clearIndices, deleteData, deleteDataCollection, getDirectory, getIndexingDate, getIndexingDate, getLastOptimizeDateSinceRestart, getLastOptimizeDuration, getLastReindexDateSinceRestart, getLastReindexDuration, getLuceneDocument, getOperationStartTime, getProgressState, getSearcher, index, index, isOperationRunning, optimizeIndices, reindexAll, remove, setIndexWriterOptions, updateData, updateDataCollection

Methods inherited from class java.lang.Object

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

Field Detail

REVISION

public static final String REVISION

See Also:

Constant Field Values

MATCHED_CATEGORIES_ATTRIBUTE

public static final String MATCHED_CATEGORIES_ATTRIBUTE

This variable is the attribute's key used by the LuceneCategorySearchEngine to set the matched categories HashSet in the QueryResultSet Attribute.

See Also:

Constant Field Values

CATEGORY_INDEX_DIRECTORY

protected static final String CATEGORY_INDEX_DIRECTORY

See Also:

Constant Field Values

NAME_FIELD

public static final String NAME_FIELD

See Also:

Constant Field Values

SYNONYMS_FIELD

public static final String SYNONYMS_FIELD

See Also:

Constant Field Values

DESCRIPTION_FIELD

public static final String DESCRIPTION_FIELD

See Also:

Constant Field Values

Constructor Detail

LuceneCategorySearchEngine

public LuceneCategorySearchEngine()
                           throws Exception

Initialize the Lucene Search Engine

Throws:

Exception - if error occurs during initialization

Method Detail

add

public void add(Category cat)

Add given Category to this lucene search engine.

Specified by:

add in interface CategorySearchEngine

Parameters:

cat - the Category to index .

update

public void update(Category cat)

Update given Category in this lucene search engine.

Specified by:

update in interface CategorySearchEngine

Parameters:

cat - the Category to reindex .

delete

public void delete(Category cat)

Delete given Category from this lucene search engine.

Specified by:

delete in interface CategorySearchEngine

Parameters:

cat - the Category to reindex .

add

public void add(Collection<Category> coll)

Add given Collection of Category to this lucene search engine.

Specified by:

add in interface CategorySearchEngine

Parameters:

coll - the Collection of Category to index .

update

public void update(Collection<Category> coll)

Update given Collection of Category in this lucene search engine.

Specified by:

update in interface CategorySearchEngine

Parameters:

coll - the Collection of Category to reindex .

delete

public void delete(Collection<Category> coll)

Delete given Collection of Category from this lucene search engine.

Specified by:

delete in interface CategorySearchEngine

Parameters:

coll - the Collection of Category to reindex .

getIndexingDate

public Date getIndexingDate(Category cat)

Retrieve the Date at which the specified Category was indexed in the search engine.

Specified by:

getIndexingDate in interface CategorySearchEngine

Parameters:

cat - the Category for which to retrieve the indexing date.

Returns:

the indexing date of the category or null if was not indexed.

Since:

jcms-6.0.1

clearAll

public void clearAll()

Clear indices in this searchEngine (undoable!).

Specified by:

clearAll in interface CategorySearchEngine

search

public boolean search(QueryHandler qh,
                      HashSet<? extends Publication> pubSet,
                      QueryResultSet resultSet)

Description copied from interface: CategorySearchEngine

Perform a full-text search.

Specified by:

search in interface CategorySearchEngine

Parameters:

qh - the Queryhandler in which to find search text and search options.

pubSet - a HashSet containing all the Publication to search.
if empty, search is not performed at all.
if null, all Publication found will be returned.
This set MUST NOT be modified by implementation.

resultSet - the QueryResultSet that must be filled with matching Publication

Returns:

true if a search was performed in the CategorySearchEngine. Useful to differenciate a query returning zero result from a query not performed due to missing paramerters (text for example).

getLogger

protected org.apache.log4j.Logger getLogger()

Description copied from class: LuceneDataSearchEngine

This methods must be implemented by the LuceneSearchEngine. It must return the logger to be used for log messages.

Specified by:

getLogger in class LuceneDataSearchEngine

Returns:

Logger of this engine.

getAllDataIterator

protected com.jalios.jcms.search.LuceneDataSearchEngine.DataIterator<Data> getAllDataIterator()

Description copied from class: LuceneDataSearchEngine

This methods must be implemented by the LuceneSearchEngine. It must return a DataIterator used to iterate on all Data to index. Used by LuceneDataSearchEngine.reindexAll().

Specified by:

getAllDataIterator in class LuceneDataSearchEngine

indexData

protected void indexData(org.apache.lucene.index.IndexWriter writer,
                         Data data,
                         String lang)
                  throws IOException

This methods index the given Category in the given language, into the given index writer.

Specified by:

indexData in class LuceneDataSearchEngine

Throws:

IOException

addUnStoredField

protected void addUnStoredField(org.apache.lucene.document.Document doc,
                                Category cat,
                                String lang,
                                String fieldName,
                                String fieldValue,
                                boolean applyBoost)

This methods create a unstored Lucene Field with the given field's value of the given Category in the given language, and add into the given Document.

Parameters:

applyBoost - whether to apply the boost, useful for appendable field in which case the boost should only be applied for the first element.

addKeywordField

protected void addKeywordField(org.apache.lucene.document.Document doc,
                               Category cat,
                               String lang,
                               String fieldName,
                               String fieldValue,
                               boolean applyBoost)

This methods create a unstored Lucene Field with the given field's value of the given Category in the given language, and add into the given Document.

Parameters:

applyBoost - whether to apply the boost, useful for appendable field in which case the boost should only be applied for the first element.