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org.apache.cocoon.transformation.helpers
Interface IncludeCacheManager

All Known Implementing Classes:

DefaultIncludeCacheManager

public interface IncludeCacheManager

The include cache manager is a component that can manage included content. It can eiter load them in parallel or pre-emptive and cache the content for a given period of time.

Since:

2.1

Version:

CVS $Id: IncludeCacheManager.html 1304258 2012-03-23 10:09:27Z ilgrosso $

Author:

Carsten Ziegeler

Field Summary

static String

ROLE Avalon role

Method Summary

IncludeCacheManagerSession	getSession(Parameters pars) Create a session for this request.
String	load(String uri, IncludeCacheManagerSession session) This informs the manager that a URI should be "loaded".
void	stream(String uri, IncludeCacheManagerSession session, XMLConsumer handler) Stream the content of the absolute URI.
void	terminateSession(IncludeCacheManagerSession session) Terminate the session.

Field Detail

ROLE

static final String ROLE

Avalon role

Method Detail

getSession

IncludeCacheManagerSession getSession(Parameters pars)

Create a session for this request. This should be invoked first and only one per request. It is required to terminate the session with terminateSession(IncludeCacheManagerSession)

Parameters:

pars - The configuration

Returns:

CacheManagerSession The session that should be used with all other commands.

load

String load(String uri,
            IncludeCacheManagerSession session)
            throws IOException,
                   SourceException

This informs the manager that a URI should be "loaded".

Parameters:

uri - The URI to load (maybe relative)

session - The corresponding session created by getSession(Parameters)

Returns:

String The absolute URI that must be used for stream(String, IncludeCacheManagerSession, XMLConsumer)

Throws:

IOException

SourceException

stream

void stream(String uri,
            IncludeCacheManagerSession session,
            XMLConsumer handler)
            throws IOException,
                   SourceException,
                   SAXException

Stream the content of the absolute URI. Depending on the configuration and state of the cache, the content is either taken from the cache, fetched etc.

Parameters:

uri - The absolute URI returned by load(String, IncludeCacheManagerSession)

session - The current session

handler - The receiver of the SAX events

Throws:

IOException

SourceException

SAXException

terminateSession

void terminateSession(IncludeCacheManagerSession session)

Terminate the session. This method must be executed at the end of the request.

Parameters:

session - The caching session.