org.dspace.app.xmlui.opensearch
Class AbstractOpenSearchGenerator

java.lang.Object
  org.apache.cocoon.util.AbstractLogEnabled
      org.apache.cocoon.xml.AbstractXMLProducer
          org.apache.cocoon.generation.AbstractGenerator
              org.dspace.app.xmlui.opensearch.AbstractOpenSearchGenerator

All Implemented Interfaces:

org.apache.avalon.excalibur.pool.Poolable, org.apache.avalon.excalibur.pool.Recyclable, org.apache.cocoon.caching.CacheableProcessingComponent, org.apache.cocoon.generation.Generator, org.apache.cocoon.sitemap.SitemapModelComponent, org.apache.cocoon.xml.XMLProducer

Direct Known Subclasses:

DiscoveryOpenSearchGenerator, StandardOpenSearchGenerator

public abstract class AbstractOpenSearchGenerator
extends org.apache.cocoon.generation.AbstractGenerator
implements org.apache.cocoon.caching.CacheableProcessingComponent, org.apache.avalon.excalibur.pool.Recyclable

This class provides the common attributes and methods for parameter parsing, cache key and validity generations. Parameters are parsed, sanitized and default values are assigned to them. Subclasses requiring a custom parameter parsing is able to overwrite this setup() method, but in most cases, this method should be enough.

Author:

Richard Rodgers, Nestor Oviedo

Field Summary

static int	DEFAULT_RPP default value for results per page parameter
protected String	format The results requested format
static int	MAX_RPP max allowed value for results per page parameter
protected String	query the search query string
protected Document	resultsDoc the results document (cached)
protected int	rpp results per page
protected DSpaceObject	scope optional search scope (= handle of container) or null
protected SortOption	sort optional sort specification
protected String	sortOrder sort order, see SortOption
protected int	start first result index

Fields inherited from class org.apache.cocoon.generation.AbstractGenerator

objectModel, parameters, resolver, source

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

contentHandler, EMPTY_CONTENT_HANDLER, lexicalHandler, xmlConsumer

Fields inherited from interface org.apache.cocoon.generation.Generator

ROLE

Constructor Summary

AbstractOpenSearchGenerator()

Method Summary

Serializable	getKey() Generate the unique caching key.
org.apache.excalibur.source.SourceValidity	getValidity() Generate the cache validity object, based on the websvc.opensearch.validity config property
void	recycle() Recycle
void	setup(org.apache.cocoon.environment.SourceResolver resolver, Map objectModel, String src, org.apache.avalon.framework.parameters.Parameters par) Setup configuration for this request, parameter parsing and sanitization.

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.apache.cocoon.generation.Generator

generate

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

setConsumer

Field Detail

format

protected String format

The results requested format

query

protected String query

the search query string

scope

protected DSpaceObject scope

optional search scope (= handle of container) or null

sort

protected SortOption sort

optional sort specification

sortOrder

protected String sortOrder

sort order, see SortOption

rpp

protected int rpp

results per page

start

protected int start

first result index

resultsDoc

protected Document resultsDoc

the results document (cached)

DEFAULT_RPP

public static int DEFAULT_RPP

default value for results per page parameter

MAX_RPP

public static int MAX_RPP

max allowed value for results per page parameter

Constructor Detail

AbstractOpenSearchGenerator

public AbstractOpenSearchGenerator()

Method Detail

getKey

public Serializable getKey()

Generate the unique caching key. This key includes the concrete class name to ensure uniqueness

Specified by:

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

getValidity

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

Generate the cache validity object, based on the websvc.opensearch.validity config property

Specified by:

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

setup

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

Setup configuration for this request, parameter parsing and sanitization. This methods should be overwrite only if the subclass requires a different parameter parsing

Specified by:

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

Overrides:

setup in class org.apache.cocoon.generation.AbstractGenerator

Throws:

org.apache.cocoon.ProcessingException

SAXException

IOException

recycle

public void recycle()

Recycle

Specified by:

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

Overrides:

recycle in class org.apache.cocoon.generation.AbstractGenerator