com.jalios.jcms.policy

Class BasicLuceneSearchEnginePolicyFilter

java.lang.Object

com.jalios.jcms.policy.AbstractPolicyFilter

com.jalios.jcms.policy.BasicLuceneSearchEnginePolicyFilter

All Implemented Interfaces:

PluginComponent, LuceneSearchEnginePolicyFilter, PolicyFilter, java.lang.Comparable

public class BasicLuceneSearchEnginePolicyFilter
extends AbstractPolicyFilter
implements LuceneSearchEnginePolicyFilter, PluginComponent

This class allow developers to put hooks to change lucene search engine mechanism behaviour. To get more information about the current request in hooks, the method Channel#getCurrentJcmsContext() must be called.

Since:

jcms-5.7.0

Version:

$Revision: 92461 $

Author:

Jean-Philippe Encausse

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	REVISION

Fields inherited from class com.jalios.jcms.policy.AbstractPolicyFilter

order

Constructor Summary

Constructors

Constructor and Description
BasicLuceneSearchEnginePolicyFilter()

Method Summary

Modifier and Type	Method and Description
void	filterCategoryDocument(org.apache.lucene.document.Document doc, Category cat, java.lang.String lang) This method is called when the given Category is being index in the given language, just before writing the Document into the index.
void	filterMemberDocument(org.apache.lucene.document.Document doc, Member mbr) This method is called when the given Member is being index, just before writing the Document into the index.
void	filterPublicationDocument(org.apache.lucene.document.Document doc, Publication pub, java.lang.String lang) This method is called when the given Publication is being index in the given language, just before writing the Document into the index.
org.apache.lucene.analysis.Analyzer	getAnalyzer(java.lang.String lang, boolean isIndexing, org.apache.lucene.analysis.Analyzer analyser) Return the Lucene Analyzer to use for a given language.
java.util.HashSet<java.lang.String>	getLanguageStopWordsSet(java.lang.String lang, java.util.HashSet<java.lang.String> jcms) Retrieves stop words of the specified language.
boolean	init(Plugin plugin) Initialize the component with the given plugin configuration
org.apache.lucene.search.Query	parseQuery(java.lang.String searchString, ParseOptions options, org.apache.lucene.analysis.Analyzer analyzer, org.apache.lucene.search.Query query) Parse the specified search string into a Lucene Query.

Methods inherited from class com.jalios.jcms.policy.AbstractPolicyFilter

compareTo, equals, getOrder, setOrder

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Comparable

compareTo

Field Detail

REVISION

public static final java.lang.String REVISION

See Also:

Constant Field Values

Constructor Detail

BasicLuceneSearchEnginePolicyFilter

public BasicLuceneSearchEnginePolicyFilter()

Method Detail

init

public boolean init(Plugin plugin)

Description copied from interface: PluginComponent

Initialize the component with the given plugin configuration

Specified by:

init in interface PluginComponent

Parameters:

plugin - the calling plugin

Returns:

true if the component has been correctly initialized.

Since:

jcms-5.7.1

See Also:

PluginComponent.init(Plugin)

getLanguageStopWordsSet

public java.util.HashSet<java.lang.String> getLanguageStopWordsSet(java.lang.String lang,
                                                                   java.util.HashSet<java.lang.String> jcms)

Description copied from interface: LuceneSearchEnginePolicyFilter

Retrieves stop words of the specified language.

Specified by:

getLanguageStopWordsSet in interface LuceneSearchEnginePolicyFilter

Parameters:

lang - a ISO-639 language code

jcms - the default Set stop word configured in JCMS

Returns:

a Set of stop words String

See Also:

LuceneSearchEnginePolicyFilter.getLanguageStopWordsSet(String, HashSet)

getAnalyzer

public org.apache.lucene.analysis.Analyzer getAnalyzer(java.lang.String lang,
                                                       boolean isIndexing,
                                                       org.apache.lucene.analysis.Analyzer analyser)

Description copied from interface: LuceneSearchEnginePolicyFilter

Return the Lucene Analyzer to use for a given language.

Specified by:

getAnalyzer in interface LuceneSearchEnginePolicyFilter

Parameters:

lang - the ISO-639 code of the language analyzed

isIndexing - true if the returned anallyzer is to be used for indexing, false in any other case (e.g. during search etc..) You may want to use this parameter to change the behaviour of your analyzer during those case (for example, synonym analyzer must generate synonyms only when indexing, not during search).

analyser - the internal Analyzer, created by JCMS, that should be returned if you do not want to return a customize analyzer

Returns:

a new Analyzer

See Also:

LuceneSearchEnginePolicyFilter.getAnalyzer(String, boolean, Analyzer)

filterPublicationDocument

public void filterPublicationDocument(org.apache.lucene.document.Document doc,
                                      Publication pub,
                                      java.lang.String lang)

Description copied from interface: LuceneSearchEnginePolicyFilter

This method is called when the given Publication is being index in the given language, just before writing the Document into the index. You can use this hook to modify the Document as you wish by adding or removing field.

Specified by:

filterPublicationDocument in interface LuceneSearchEnginePolicyFilter

Parameters:

doc - the lucene Document that was created by JCMS search engine

pub - the Publication being indexed

lang - the indexed language

See Also:

LuceneSearchEnginePolicyFilter.filterPublicationDocument(Document, Publication, String)

filterCategoryDocument

public void filterCategoryDocument(org.apache.lucene.document.Document doc,
                                   Category cat,
                                   java.lang.String lang)

Description copied from interface: LuceneSearchEnginePolicyFilter

This method is called when the given Category is being index in the given language, just before writing the Document into the index. You can use this hook to modify the Document as you wish by adding or removing field.

Specified by:

filterCategoryDocument in interface LuceneSearchEnginePolicyFilter

Parameters:

doc - the lucene Document that was created by JCMS search engine

cat - the Category being indexed

lang - the indexed language

See Also:

LuceneSearchEnginePolicyFilter.filterCategoryDocument(Document, Category, String)

filterMemberDocument

public void filterMemberDocument(org.apache.lucene.document.Document doc,
                                 Member mbr)

Description copied from interface: LuceneSearchEnginePolicyFilter

This method is called when the given Member is being index, just before writing the Document into the index. You can use this hook to modify the Document as you wish by adding or removing field.

Specified by:

filterMemberDocument in interface LuceneSearchEnginePolicyFilter

Parameters:

doc - the lucene Document that was created by JCMS search engine

mbr - the Member being indexed

See Also:

LuceneSearchEnginePolicyFilter.filterMemberDocument(Document, Member)

parseQuery

public org.apache.lucene.search.Query parseQuery(java.lang.String searchString,
                                                 ParseOptions options,
                                                 org.apache.lucene.analysis.Analyzer analyzer,
                                                 org.apache.lucene.search.Query query)
                                          throws org.apache.lucene.queryparser.classic.ParseException

Description copied from interface: LuceneSearchEnginePolicyFilter

Parse the specified search string into a Lucene Query.

Specified by:

parseQuery in interface LuceneSearchEnginePolicyFilter

Parameters:

searchString - the string to be search

options - current parsing option

analyzer - the analyzer being used for this search

query - a Query instance already computed by other policy if any (may be null)

Returns:

a new Query, return null to use default JCMS behavior

Throws:

org.apache.lucene.queryparser.classic.ParseException - on parse error

See Also:

LuceneSearchEnginePolicyFilter.parseQuery(String, ParseOptions, Analyzer, Query)