Package org.dlese.dpc.index.writer

Class DDSItemMetaMetadataIndexingPlugin

java.lang.Object

org.dlese.dpc.index.writer.ServletContextFileIndexingPlugin

org.dlese.dpc.index.writer.DDSItemMetaMetadataIndexingPlugin

All Implemented Interfaces:

FileIndexingPlugin

public class DDSItemMetaMetadataIndexingPlugin
extends ServletContextFileIndexingPlugin

A FileIndexingPlugin that indexes meta-metadata about items (educational resources) in the index.

Author:

John Weatherley

See Also:

• $Log: DDSItemMetaMetadataIndexingPlugin.java,v $ Revision 1.6 2010/07/14 00:18:49 jweather -All Lucene-related classes have been upgraded to Lucene v3.0.2. Major changes include: --Search results are now returned in a new ResultDocList Object instead of a ResultDoc[] array. This provides for more efficient searching (does not require an additional loop over results as before) and expandability (methods can be added to the ResultDocList to support future fuctnionality) and better utilizes the built-in Lucene classes for search than before (TopDocs, Sort, etc.) --Uses Lucene Sort class for sorting at search time. Replaces logic that sorted results after the search (deprecated but still supported for backward-compatibility) - Final previous version was tagged in CVS with 'lucene_2_4_final_version' Revision 1.5 2009/03/20 23:33:53 jweather -updated the license statement in all Java files to Educational Community License v1.0. Revision 1.4 2007/07/05 22:29:35 jweather -Upgradded from Lucene v1.4.3 to Lucene v2.2.0 (code merged from lucene-2-upgrade-branch to head) Revision 1.3.6.1 2007/07/05 21:12:25 jweather -Updated Field BooleanQuery method calls to use Lucene 2.0 syntax Revision 1.3 2004/10/08 17:35:53 jweather fixed the "too many open files" problem when DDS is auto-reloaded in Tomcat multiple times Revision 1.2 2004/09/10 22:46:05 jweather added XML format (docType) and collection (docGroup) to the FileIndexingServicePlugin Revision 1.1 2004/09/10 01:58:06 jweather FileIndexingPlugins for use in the DDS Servlet indexing of items

Constructor Summary

Constructors

Constructor	Description
DDSItemMetaMetadataIndexingPlugin()

Method Summary

Modifier and Type	Method	Description
void	addFields(File file, org.apache.lucene.document.Document newDoc, org.apache.lucene.document.Document existingDoc, String docType, String docGroup)	Indexes a single field 'DDSItemMetaMetadataIndexingPlugin' with the value 'true'.
static final File	getMetaMetadataFile(File metadataFile)	Gets the meta-metadata file associated with the given metadata file.

Methods inherited from class org.dlese.dpc.index.writer.ServletContextFileIndexingPlugin

getServletContext, setServletContext

Methods inherited from class java.lang.Object

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

Constructor Details

DDSItemMetaMetadataIndexingPlugin

public DDSItemMetaMetadataIndexingPlugin()

Method Details

getMetaMetadataFile

public static final File getMetaMetadataFile(File metadataFile)

Gets the meta-metadata file associated with the given metadata file. The file that is returned is not guaranteed to exist.

Parameters:

metadataFile - A metadata File

Returns:

The meta-metadata File associated with the File

addFields

public void addFields(File file,
 org.apache.lucene.document.Document newDoc,
 org.apache.lucene.document.Document existingDoc,
 String docType,
 String docGroup)
               throws Exception

Indexes a single field 'DDSItemMetaMetadataIndexingPlugin' with the value 'true'. The index may be searched using this field/value to determine which records have been indexed using this plugin.

Parameters:

file - The file that is being indexed

newDoc - The new Lucene Document that will be inserted in the index for this file

existingDoc - The previous Lucene Document that existed for this record, or null if not available

docType - The docType for this file, for example 'adn', 'dlese_collect' (equivalent to XML format in the DLESE metadata repository)

docGroup - The docGroup associated with this file, for example 'dcc', 'comet', or null if none is associated (equivalent to the collection key in the DLESE metadata repository)

Throws:

Exception - Exception should be thrown to index this Document as an error

See Also:

• Document