net.fortytwo.linkeddata

Class RedirectManager

java.lang.Object

net.fortytwo.linkeddata.RedirectManager

public class RedirectManager
extends java.lang.Object

An object which keeps track of the 3xx redirects which have been followed in the course of dereferencing Linked Data URIs. Persisting and looking up these redirects saves time, space, and bandwidth when multiple redirects to the same document are encountered.

Author:

Joshua Shinavier (http://fortytwo.net)

Constructor Summary

Constructors

Constructor and Description
RedirectManager(org.openrdf.sail.SailConnection connection)

Method Summary

Modifier and Type	Method and Description
boolean	existsRedirectTo(java.lang.String documentUri) Finds whether any URI has already been dereferenced which redirects to the given document URI
void	persistRedirect(java.lang.String thingUri, java.lang.String documentUri) Persistently stores the fact that the given thing URI has been found to redirect to the given document URI

Methods inherited from class java.lang.Object

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

Constructor Detail

RedirectManager

public RedirectManager(org.openrdf.sail.SailConnection connection)

Method Detail

existsRedirectTo

public boolean existsRedirectTo(java.lang.String documentUri)
                         throws org.openrdf.sail.SailException

Finds whether any URI has already been dereferenced which redirects to the given document URI

Parameters:

documentUri - the URI of a possible Linked Data document

Returns:

whether any URI has already been dereferenced which redirects to the given document URI

Throws:

org.openrdf.sail.SailException

persistRedirect

public void persistRedirect(java.lang.String thingUri,
                            java.lang.String documentUri)
                     throws org.openrdf.sail.SailException

Persistently stores the fact that the given thing URI has been found to redirect to the given document URI

Parameters:

thingUri - the URI of a non-information resource

documentUri - the URI to which the original URI has been redirected

Throws:

org.openrdf.sail.SailException