org.dspace.app.xmlui.aspect.artifactbrowser
Class CommunityBrowser

java.lang.Object
  org.apache.cocoon.util.AbstractLogEnabled
      org.apache.cocoon.xml.AbstractXMLProducer
          org.apache.cocoon.xml.AbstractXMLPipe
              org.apache.cocoon.transformation.AbstractTransformer
                  org.dspace.app.xmlui.wing.AbstractWingTransformer
                      org.dspace.app.xmlui.cocoon.AbstractDSpaceTransformer
                          org.dspace.app.xmlui.aspect.artifactbrowser.CommunityBrowser

All Implemented Interfaces:

org.apache.avalon.excalibur.pool.Poolable, org.apache.avalon.excalibur.pool.Recyclable, org.apache.cocoon.caching.CacheableProcessingComponent, org.apache.cocoon.sitemap.SitemapModelComponent, org.apache.cocoon.transformation.Transformer, org.apache.cocoon.xml.XMLPipe, org.apache.cocoon.xml.XMLProducer, org.apache.excalibur.xml.sax.XMLConsumer, DSpaceTransformer, WingTransformer, ContentHandler, LexicalHandler

public class CommunityBrowser
extends AbstractDSpaceTransformer
implements org.apache.cocoon.caching.CacheableProcessingComponent

Display a list of Communities and collections. This item may be configured so that it will only display to a specific depth, and may include or exclude collections from the tree. The configuration option available: 999

Author:

Scott Phillips

Nested Class Summary

protected static class

CommunityBrowser.TreeNode Private class to represent the tree structure of communities & collections.

Field Summary

protected int	depth What depth is the maximum depth of the tree
protected boolean	excludeCollections Should collections be excluded from the list
protected CommunityBrowser.TreeNode	root Cached version the community / collection hierarchy
static Message	T_dspace_home Language Strings
static Message	T_head
static Message	T_select
static Message	T_title
static Message	T_trail

Fields inherited from class org.dspace.app.xmlui.cocoon.AbstractDSpaceTransformer

context, contextPath, eperson, knot, objectModel, parameters, servletPath, sitemapURI, url

Fields inherited from class org.apache.cocoon.xml.AbstractXMLProducer

contentHandler, EMPTY_CONTENT_HANDLER, lexicalHandler, xmlConsumer

Fields inherited from interface org.apache.cocoon.transformation.Transformer

ROLE

Constructor Summary

CommunityBrowser()

Method Summary

void	addBody(Body body) Add a community-browser division that includes references to community and collection metadata.
void	addPageMeta(PageMeta pageMeta) Add a page title and trail links.
void	buildList(List list, CommunityBrowser.TreeNode node) Recursively build a list of the community / collection hierarchy based upon the given NodeTree.
void	buildReferenceSet(ReferenceSet referenceSet, CommunityBrowser.TreeNode node) Recursively build an includeset of the community / collection hierarchy based upon the given NodeTree.
Serializable	getKey() Generate the unique caching key.
org.apache.excalibur.source.SourceValidity	getValidity() Generate the cache validity object.
void	recycle() recycle
void	setup(org.apache.cocoon.environment.SourceResolver resolver, Map objectModel, String src, org.apache.avalon.framework.parameters.Parameters parameters) Set the component up, pulling any configuration values from the sitemap parameters.

Methods inherited from class org.dspace.app.xmlui.cocoon.AbstractDSpaceTransformer

addOptions, addUserMeta, decodeFromURL, dispose, encodeForURL, generateURL, getComponentName, getObjectManager, handleException

Methods inherited from class org.dspace.app.xmlui.wing.AbstractWingTransformer

createWingDocument, endDocument, endElement, endPrefixMapping, getDefaultMessageCatalogue, message, message, setupWing, startDocument, startElement, startPrefixMapping

Methods inherited from class org.apache.cocoon.xml.AbstractXMLPipe

characters, comment, endCDATA, endDTD, endEntity, ignorableWhitespace, processingInstruction, setDocumentLocator, skippedEntity, startCDATA, startDTD, startEntity

Methods inherited from class org.apache.cocoon.xml.AbstractXMLProducer

setConsumer, setContentHandler, setLexicalHandler

Methods inherited from class org.apache.cocoon.util.AbstractLogEnabled

getLogger, setLogger

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.xml.sax.ContentHandler

characters, ignorableWhitespace, processingInstruction, setDocumentLocator, skippedEntity

Methods inherited from interface org.xml.sax.ext.LexicalHandler

comment, endCDATA, endDTD, endEntity, startCDATA, startDTD, startEntity

Methods inherited from interface org.apache.cocoon.xml.XMLProducer

setConsumer

Field Detail

T_dspace_home

public static final Message T_dspace_home

Language Strings

T_title

public static final Message T_title

T_trail

public static final Message T_trail

T_head

public static final Message T_head

T_select

public static final Message T_select

excludeCollections

protected boolean excludeCollections

Should collections be excluded from the list

depth

protected int depth

What depth is the maximum depth of the tree

root

protected CommunityBrowser.TreeNode root

Cached version the community / collection hierarchy

Constructor Detail

CommunityBrowser

public CommunityBrowser()

Method Detail

setup

public void setup(org.apache.cocoon.environment.SourceResolver resolver,
                  Map objectModel,
                  String src,
                  org.apache.avalon.framework.parameters.Parameters parameters)
           throws org.apache.cocoon.ProcessingException,
                  SAXException,
                  IOException

Set the component up, pulling any configuration values from the sitemap parameters.

Specified by:

setup in interface org.apache.cocoon.sitemap.SitemapModelComponent

Overrides:

setup in class AbstractDSpaceTransformer

Throws:

org.apache.cocoon.ProcessingException

SAXException

IOException

getKey

public Serializable getKey()

Generate the unique caching key. This key must be unique inside the space of this component.

Specified by:

getKey in interface org.apache.cocoon.caching.CacheableProcessingComponent

getValidity

public org.apache.excalibur.source.SourceValidity getValidity()

Generate the cache validity object. The validity object will include a list of all communities & collection being browsed along with there logo bitstreams.

Specified by:

getValidity in interface org.apache.cocoon.caching.CacheableProcessingComponent

addPageMeta

public void addPageMeta(PageMeta pageMeta)
                 throws SAXException,
                        WingException,
                        UIException,
                        SQLException,
                        IOException,
                        AuthorizeException

Add a page title and trail links.

Specified by:

addPageMeta in interface DSpaceTransformer

Specified by:

addPageMeta in interface WingTransformer

Overrides:

addPageMeta in class AbstractDSpaceTransformer

Throws:

SAXException

WingException

UIException

SQLException

IOException

AuthorizeException

addBody

public void addBody(Body body)
             throws SAXException,
                    WingException,
                    UIException,
                    SQLException,
                    IOException,
                    AuthorizeException

Add a community-browser division that includes references to community and collection metadata.

Specified by:

addBody in interface DSpaceTransformer

Specified by:

addBody in interface WingTransformer

Overrides:

addBody in class AbstractDSpaceTransformer

Throws:

SAXException

WingException

UIException

SQLException

IOException

AuthorizeException

buildReferenceSet

public void buildReferenceSet(ReferenceSet referenceSet,
                              CommunityBrowser.TreeNode node)
                       throws WingException

Recursively build an includeset of the community / collection hierarchy based upon the given NodeTree.

Parameters:

referenceSet - The include set

node - The current node of the hierarchy.

Throws:

WingException

buildList

public void buildList(List list,
                      CommunityBrowser.TreeNode node)
               throws WingException

Recursively build a list of the community / collection hierarchy based upon the given NodeTree.

Parameters:

list - The parent list

node - The current node of the hierarchy.

Throws:

WingException

recycle

public void recycle()

recycle

Specified by:

recycle in interface org.apache.avalon.excalibur.pool.Recyclable

Overrides:

recycle in class AbstractDSpaceTransformer